1 /**
2 ******************************************************************************
3 * @file stm32l5xx_hal_uart.c
4 * @author MCD Application Team
5 * @brief UART HAL module driver.
6 * This file provides firmware functions to manage the following
7 * functionalities of the Universal Asynchronous Receiver Transmitter Peripheral (UART).
8 * + Initialization and de-initialization functions
9 * + IO operation functions
10 * + Peripheral Control functions
11 *
12 *
13 ******************************************************************************
14 * @attention
15 *
16 * Copyright (c) 2019 STMicroelectronics.
17 * All rights reserved.
18 *
19 * This software is licensed under terms that can be found in the LICENSE file
20 * in the root directory of this software component.
21 * If no LICENSE file comes with this software, it is provided AS-IS.
22 *
23 ******************************************************************************
24 @verbatim
25 ===============================================================================
26 ##### How to use this driver #####
27 ===============================================================================
28 [..]
29 The UART HAL driver can be used as follows:
30
31 (#) Declare a UART_HandleTypeDef handle structure (eg. UART_HandleTypeDef huart).
32 (#) Initialize the UART low level resources by implementing the HAL_UART_MspInit() API:
33 (++) Enable the USARTx interface clock.
34 (++) UART pins configuration:
35 (+++) Enable the clock for the UART GPIOs.
36 (+++) Configure these UART pins as alternate function pull-up.
37 (++) NVIC configuration if you need to use interrupt process (HAL_UART_Transmit_IT()
38 and HAL_UART_Receive_IT() APIs):
39 (+++) Configure the USARTx interrupt priority.
40 (+++) Enable the NVIC USART IRQ handle.
41 (++) UART interrupts handling:
42 -@@- The specific UART interrupts (Transmission complete interrupt,
43 RXNE interrupt, RX/TX FIFOs related interrupts and Error Interrupts)
44 are managed using the macros __HAL_UART_ENABLE_IT() and __HAL_UART_DISABLE_IT()
45 inside the transmit and receive processes.
46 (++) DMA Configuration if you need to use DMA process (HAL_UART_Transmit_DMA()
47 and HAL_UART_Receive_DMA() APIs):
48 (+++) Declare a DMA handle structure for the Tx/Rx channel.
49 (+++) Enable the DMAx interface clock.
50 (+++) Configure the declared DMA handle structure with the required Tx/Rx parameters.
51 (+++) Configure the DMA Tx/Rx channel.
52 (+++) Associate the initialized DMA handle to the UART DMA Tx/Rx handle.
53 (+++) Configure the priority and enable the NVIC for the transfer complete
54 interrupt on the DMA Tx/Rx channel.
55
56 (#) Program the Baud Rate, Word Length, Stop Bit, Parity, Prescaler value , Hardware
57 flow control and Mode (Receiver/Transmitter) in the huart handle Init structure.
58
59 (#) If required, program UART advanced features (TX/RX pins swap, auto Baud rate detection,...)
60 in the huart handle AdvancedInit structure.
61
62 (#) For the UART asynchronous mode, initialize the UART registers by calling
63 the HAL_UART_Init() API.
64
65 (#) For the UART Half duplex mode, initialize the UART registers by calling
66 the HAL_HalfDuplex_Init() API.
67
68 (#) For the UART LIN (Local Interconnection Network) mode, initialize the UART registers
69 by calling the HAL_LIN_Init() API.
70
71 (#) For the UART Multiprocessor mode, initialize the UART registers
72 by calling the HAL_MultiProcessor_Init() API.
73
74 (#) For the UART RS485 Driver Enabled mode, initialize the UART registers
75 by calling the HAL_RS485Ex_Init() API.
76
77 [..]
78 (@) These API's (HAL_UART_Init(), HAL_HalfDuplex_Init(), HAL_LIN_Init(), HAL_MultiProcessor_Init(),
79 also configure the low level Hardware GPIO, CLOCK, CORTEX...etc) by
80 calling the customized HAL_UART_MspInit() API.
81
82 ##### Callback registration #####
83 ==================================
84
85 [..]
86 The compilation define USE_HAL_UART_REGISTER_CALLBACKS when set to 1
87 allows the user to configure dynamically the driver callbacks.
88
89 [..]
90 Use Function HAL_UART_RegisterCallback() to register a user callback.
91 Function HAL_UART_RegisterCallback() allows to register following callbacks:
92 (+) TxHalfCpltCallback : Tx Half Complete Callback.
93 (+) TxCpltCallback : Tx Complete Callback.
94 (+) RxHalfCpltCallback : Rx Half Complete Callback.
95 (+) RxCpltCallback : Rx Complete Callback.
96 (+) ErrorCallback : Error Callback.
97 (+) AbortCpltCallback : Abort Complete Callback.
98 (+) AbortTransmitCpltCallback : Abort Transmit Complete Callback.
99 (+) AbortReceiveCpltCallback : Abort Receive Complete Callback.
100 (+) WakeupCallback : Wakeup Callback.
101 (+) RxFifoFullCallback : Rx Fifo Full Callback.
102 (+) TxFifoEmptyCallback : Tx Fifo Empty Callback.
103 (+) MspInitCallback : UART MspInit.
104 (+) MspDeInitCallback : UART MspDeInit.
105 This function takes as parameters the HAL peripheral handle, the Callback ID
106 and a pointer to the user callback function.
107
108 [..]
109 Use function HAL_UART_UnRegisterCallback() to reset a callback to the default
110 weak (surcharged) function.
111 HAL_UART_UnRegisterCallback() takes as parameters the HAL peripheral handle,
112 and the Callback ID.
113 This function allows to reset following callbacks:
114 (+) TxHalfCpltCallback : Tx Half Complete Callback.
115 (+) TxCpltCallback : Tx Complete Callback.
116 (+) RxHalfCpltCallback : Rx Half Complete Callback.
117 (+) RxCpltCallback : Rx Complete Callback.
118 (+) ErrorCallback : Error Callback.
119 (+) AbortCpltCallback : Abort Complete Callback.
120 (+) AbortTransmitCpltCallback : Abort Transmit Complete Callback.
121 (+) AbortReceiveCpltCallback : Abort Receive Complete Callback.
122 (+) WakeupCallback : Wakeup Callback.
123 (+) RxFifoFullCallback : Rx Fifo Full Callback.
124 (+) TxFifoEmptyCallback : Tx Fifo Empty Callback.
125 (+) MspInitCallback : UART MspInit.
126 (+) MspDeInitCallback : UART MspDeInit.
127
128 [..]
129 For specific callback RxEventCallback, use dedicated registration/reset functions:
130 respectively HAL_UART_RegisterRxEventCallback() , HAL_UART_UnRegisterRxEventCallback().
131
132 [..]
133 By default, after the HAL_UART_Init() and when the state is HAL_UART_STATE_RESET
134 all callbacks are set to the corresponding weak (surcharged) functions:
135 examples HAL_UART_TxCpltCallback(), HAL_UART_RxHalfCpltCallback().
136 Exception done for MspInit and MspDeInit functions that are respectively
137 reset to the legacy weak (surcharged) functions in the HAL_UART_Init()
138 and HAL_UART_DeInit() only when these callbacks are null (not registered beforehand).
139 If not, MspInit or MspDeInit are not null, the HAL_UART_Init() and HAL_UART_DeInit()
140 keep and use the user MspInit/MspDeInit callbacks (registered beforehand).
141
142 [..]
143 Callbacks can be registered/unregistered in HAL_UART_STATE_READY state only.
144 Exception done MspInit/MspDeInit that can be registered/unregistered
145 in HAL_UART_STATE_READY or HAL_UART_STATE_RESET state, thus registered (user)
146 MspInit/DeInit callbacks can be used during the Init/DeInit.
147 In that case first register the MspInit/MspDeInit user callbacks
148 using HAL_UART_RegisterCallback() before calling HAL_UART_DeInit()
149 or HAL_UART_Init() function.
150
151 [..]
152 When The compilation define USE_HAL_UART_REGISTER_CALLBACKS is set to 0 or
153 not defined, the callback registration feature is not available
154 and weak (surcharged) callbacks are used.
155
156
157 @endverbatim
158 ******************************************************************************
159 */
160
161 /* Includes ------------------------------------------------------------------*/
162 #include "stm32l5xx_hal.h"
163
164 /** @addtogroup STM32L5xx_HAL_Driver
165 * @{
166 */
167
168 /** @defgroup UART UART
169 * @brief HAL UART module driver
170 * @{
171 */
172
173 #ifdef HAL_UART_MODULE_ENABLED
174
175 /* Private typedef -----------------------------------------------------------*/
176 /* Private define ------------------------------------------------------------*/
177 /** @defgroup UART_Private_Constants UART Private Constants
178 * @{
179 */
180 #define USART_CR1_FIELDS ((uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | USART_CR1_TE | USART_CR1_RE | \
181 USART_CR1_OVER8 | USART_CR1_FIFOEN)) /*!< UART or USART CR1 fields of parameters set by UART_SetConfig API */
182
183 #define USART_CR3_FIELDS ((uint32_t)(USART_CR3_RTSE | USART_CR3_CTSE | USART_CR3_ONEBIT | USART_CR3_TXFTCFG | \
184 USART_CR3_RXFTCFG)) /*!< UART or USART CR3 fields of parameters set by UART_SetConfig API */
185
186 #define LPUART_BRR_MIN 0x00000300U /* LPUART BRR minimum authorized value */
187 #define LPUART_BRR_MAX 0x000FFFFFU /* LPUART BRR maximum authorized value */
188
189 #define UART_BRR_MIN 0x10U /* UART BRR minimum authorized value */
190 #define UART_BRR_MAX 0x0000FFFFU /* UART BRR maximum authorized value */
191 /**
192 * @}
193 */
194
195 /* Private macros ------------------------------------------------------------*/
196 /* Private function prototypes -----------------------------------------------*/
197 /** @addtogroup UART_Private_Functions
198 * @{
199 */
200 static void UART_EndTxTransfer(UART_HandleTypeDef *huart);
201 static void UART_EndRxTransfer(UART_HandleTypeDef *huart);
202 static void UART_DMATransmitCplt(DMA_HandleTypeDef *hdma);
203 static void UART_DMAReceiveCplt(DMA_HandleTypeDef *hdma);
204 static void UART_DMARxHalfCplt(DMA_HandleTypeDef *hdma);
205 static void UART_DMATxHalfCplt(DMA_HandleTypeDef *hdma);
206 static void UART_DMAError(DMA_HandleTypeDef *hdma);
207 static void UART_DMAAbortOnError(DMA_HandleTypeDef *hdma);
208 static void UART_DMATxAbortCallback(DMA_HandleTypeDef *hdma);
209 static void UART_DMARxAbortCallback(DMA_HandleTypeDef *hdma);
210 static void UART_DMATxOnlyAbortCallback(DMA_HandleTypeDef *hdma);
211 static void UART_DMARxOnlyAbortCallback(DMA_HandleTypeDef *hdma);
212 static void UART_TxISR_8BIT(UART_HandleTypeDef *huart);
213 static void UART_TxISR_16BIT(UART_HandleTypeDef *huart);
214 static void UART_TxISR_8BIT_FIFOEN(UART_HandleTypeDef *huart);
215 static void UART_TxISR_16BIT_FIFOEN(UART_HandleTypeDef *huart);
216 static void UART_EndTransmit_IT(UART_HandleTypeDef *huart);
217 static void UART_RxISR_8BIT(UART_HandleTypeDef *huart);
218 static void UART_RxISR_16BIT(UART_HandleTypeDef *huart);
219 static void UART_RxISR_8BIT_FIFOEN(UART_HandleTypeDef *huart);
220 static void UART_RxISR_16BIT_FIFOEN(UART_HandleTypeDef *huart);
221 /**
222 * @}
223 */
224
225 /* Private variables ---------------------------------------------------------*/
226 /** @addtogroup UART_Private_variables
227 * @{
228 */
229 const uint16_t UARTPrescTable[12] = {1U, 2U, 4U, 6U, 8U, 10U, 12U, 16U, 32U, 64U, 128U, 256U};
230 /**
231 * @}
232 */
233
234 /* Exported Constants --------------------------------------------------------*/
235 /* Exported functions --------------------------------------------------------*/
236
237 /** @defgroup UART_Exported_Functions UART Exported Functions
238 * @{
239 */
240
241 /** @defgroup UART_Exported_Functions_Group1 Initialization and de-initialization functions
242 * @brief Initialization and Configuration functions
243 *
244 @verbatim
245 ===============================================================================
246 ##### Initialization and Configuration functions #####
247 ===============================================================================
248 [..]
249 This subsection provides a set of functions allowing to initialize the USARTx or the UARTy
250 in asynchronous mode.
251 (+) For the asynchronous mode the parameters below can be configured:
252 (++) Baud Rate
253 (++) Word Length
254 (++) Stop Bit
255 (++) Parity: If the parity is enabled, then the MSB bit of the data written
256 in the data register is transmitted but is changed by the parity bit.
257 (++) Hardware flow control
258 (++) Receiver/transmitter modes
259 (++) Over Sampling Method
260 (++) One-Bit Sampling Method
261 (+) For the asynchronous mode, the following advanced features can be configured as well:
262 (++) TX and/or RX pin level inversion
263 (++) data logical level inversion
264 (++) RX and TX pins swap
265 (++) RX overrun detection disabling
266 (++) DMA disabling on RX error
267 (++) MSB first on communication line
268 (++) auto Baud rate detection
269 [..]
270 The HAL_UART_Init(), HAL_HalfDuplex_Init(), HAL_LIN_Init()and HAL_MultiProcessor_Init()API
271 follow respectively the UART asynchronous, UART Half duplex, UART LIN mode
272 and UART multiprocessor mode configuration procedures (details for the procedures
273 are available in reference manual).
274
275 @endverbatim
276
277 Depending on the frame length defined by the M1 and M0 bits (7-bit,
278 8-bit or 9-bit), the possible UART formats are listed in the
279 following table.
280
281 Table 1. UART frame format.
282 +-----------------------------------------------------------------------+
283 | M1 bit | M0 bit | PCE bit | UART frame |
284 |---------|---------|-----------|---------------------------------------|
285 | 0 | 0 | 0 | | SB | 8 bit data | STB | |
286 |---------|---------|-----------|---------------------------------------|
287 | 0 | 0 | 1 | | SB | 7 bit data | PB | STB | |
288 |---------|---------|-----------|---------------------------------------|
289 | 0 | 1 | 0 | | SB | 9 bit data | STB | |
290 |---------|---------|-----------|---------------------------------------|
291 | 0 | 1 | 1 | | SB | 8 bit data | PB | STB | |
292 |---------|---------|-----------|---------------------------------------|
293 | 1 | 0 | 0 | | SB | 7 bit data | STB | |
294 |---------|---------|-----------|---------------------------------------|
295 | 1 | 0 | 1 | | SB | 6 bit data | PB | STB | |
296 +-----------------------------------------------------------------------+
297
298 * @{
299 */
300
301 /**
302 * @brief Initialize the UART mode according to the specified
303 * parameters in the UART_InitTypeDef and initialize the associated handle.
304 * @param huart UART handle.
305 * @retval HAL status
306 */
HAL_UART_Init(UART_HandleTypeDef * huart)307 HAL_StatusTypeDef HAL_UART_Init(UART_HandleTypeDef *huart)
308 {
309 /* Check the UART handle allocation */
310 if (huart == NULL)
311 {
312 return HAL_ERROR;
313 }
314
315 if (huart->Init.HwFlowCtl != UART_HWCONTROL_NONE)
316 {
317 /* Check the parameters */
318 assert_param(IS_UART_HWFLOW_INSTANCE(huart->Instance));
319 }
320 else
321 {
322 /* Check the parameters */
323 assert_param((IS_UART_INSTANCE(huart->Instance)) || (IS_LPUART_INSTANCE(huart->Instance)));
324 }
325
326 if (huart->gState == HAL_UART_STATE_RESET)
327 {
328 /* Allocate lock resource and initialize it */
329 huart->Lock = HAL_UNLOCKED;
330
331 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
332 UART_InitCallbacksToDefault(huart);
333
334 if (huart->MspInitCallback == NULL)
335 {
336 huart->MspInitCallback = HAL_UART_MspInit;
337 }
338
339 /* Init the low level hardware */
340 huart->MspInitCallback(huart);
341 #else
342 /* Init the low level hardware : GPIO, CLOCK */
343 HAL_UART_MspInit(huart);
344 #endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
345 }
346
347 huart->gState = HAL_UART_STATE_BUSY;
348
349 __HAL_UART_DISABLE(huart);
350
351 /* Set the UART Communication parameters */
352 if (UART_SetConfig(huart) == HAL_ERROR)
353 {
354 return HAL_ERROR;
355 }
356
357 if (huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT)
358 {
359 UART_AdvFeatureConfig(huart);
360 }
361
362 /* In asynchronous mode, the following bits must be kept cleared:
363 - LINEN and CLKEN bits in the USART_CR2 register,
364 - SCEN, HDSEL and IREN bits in the USART_CR3 register.*/
365 CLEAR_BIT(huart->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN));
366 CLEAR_BIT(huart->Instance->CR3, (USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN));
367
368 __HAL_UART_ENABLE(huart);
369
370 /* TEACK and/or REACK to check before moving huart->gState and huart->RxState to Ready */
371 return (UART_CheckIdleState(huart));
372 }
373
374 /**
375 * @brief Initialize the half-duplex mode according to the specified
376 * parameters in the UART_InitTypeDef and creates the associated handle.
377 * @param huart UART handle.
378 * @retval HAL status
379 */
HAL_HalfDuplex_Init(UART_HandleTypeDef * huart)380 HAL_StatusTypeDef HAL_HalfDuplex_Init(UART_HandleTypeDef *huart)
381 {
382 /* Check the UART handle allocation */
383 if (huart == NULL)
384 {
385 return HAL_ERROR;
386 }
387
388 /* Check UART instance */
389 assert_param(IS_UART_HALFDUPLEX_INSTANCE(huart->Instance));
390
391 if (huart->gState == HAL_UART_STATE_RESET)
392 {
393 /* Allocate lock resource and initialize it */
394 huart->Lock = HAL_UNLOCKED;
395
396 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
397 UART_InitCallbacksToDefault(huart);
398
399 if (huart->MspInitCallback == NULL)
400 {
401 huart->MspInitCallback = HAL_UART_MspInit;
402 }
403
404 /* Init the low level hardware */
405 huart->MspInitCallback(huart);
406 #else
407 /* Init the low level hardware : GPIO, CLOCK */
408 HAL_UART_MspInit(huart);
409 #endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
410 }
411
412 huart->gState = HAL_UART_STATE_BUSY;
413
414 __HAL_UART_DISABLE(huart);
415
416 /* Set the UART Communication parameters */
417 if (UART_SetConfig(huart) == HAL_ERROR)
418 {
419 return HAL_ERROR;
420 }
421
422 if (huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT)
423 {
424 UART_AdvFeatureConfig(huart);
425 }
426
427 /* In half-duplex mode, the following bits must be kept cleared:
428 - LINEN and CLKEN bits in the USART_CR2 register,
429 - SCEN and IREN bits in the USART_CR3 register.*/
430 CLEAR_BIT(huart->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN));
431 CLEAR_BIT(huart->Instance->CR3, (USART_CR3_IREN | USART_CR3_SCEN));
432
433 /* Enable the Half-Duplex mode by setting the HDSEL bit in the CR3 register */
434 SET_BIT(huart->Instance->CR3, USART_CR3_HDSEL);
435
436 __HAL_UART_ENABLE(huart);
437
438 /* TEACK and/or REACK to check before moving huart->gState and huart->RxState to Ready */
439 return (UART_CheckIdleState(huart));
440 }
441
442
443 /**
444 * @brief Initialize the LIN mode according to the specified
445 * parameters in the UART_InitTypeDef and creates the associated handle.
446 * @param huart UART handle.
447 * @param BreakDetectLength Specifies the LIN break detection length.
448 * This parameter can be one of the following values:
449 * @arg @ref UART_LINBREAKDETECTLENGTH_10B 10-bit break detection
450 * @arg @ref UART_LINBREAKDETECTLENGTH_11B 11-bit break detection
451 * @retval HAL status
452 */
HAL_LIN_Init(UART_HandleTypeDef * huart,uint32_t BreakDetectLength)453 HAL_StatusTypeDef HAL_LIN_Init(UART_HandleTypeDef *huart, uint32_t BreakDetectLength)
454 {
455 /* Check the UART handle allocation */
456 if (huart == NULL)
457 {
458 return HAL_ERROR;
459 }
460
461 /* Check the LIN UART instance */
462 assert_param(IS_UART_LIN_INSTANCE(huart->Instance));
463 /* Check the Break detection length parameter */
464 assert_param(IS_UART_LIN_BREAK_DETECT_LENGTH(BreakDetectLength));
465
466 /* LIN mode limited to 16-bit oversampling only */
467 if (huart->Init.OverSampling == UART_OVERSAMPLING_8)
468 {
469 return HAL_ERROR;
470 }
471 /* LIN mode limited to 8-bit data length */
472 if (huart->Init.WordLength != UART_WORDLENGTH_8B)
473 {
474 return HAL_ERROR;
475 }
476
477 if (huart->gState == HAL_UART_STATE_RESET)
478 {
479 /* Allocate lock resource and initialize it */
480 huart->Lock = HAL_UNLOCKED;
481
482 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
483 UART_InitCallbacksToDefault(huart);
484
485 if (huart->MspInitCallback == NULL)
486 {
487 huart->MspInitCallback = HAL_UART_MspInit;
488 }
489
490 /* Init the low level hardware */
491 huart->MspInitCallback(huart);
492 #else
493 /* Init the low level hardware : GPIO, CLOCK */
494 HAL_UART_MspInit(huart);
495 #endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
496 }
497
498 huart->gState = HAL_UART_STATE_BUSY;
499
500 __HAL_UART_DISABLE(huart);
501
502 /* Set the UART Communication parameters */
503 if (UART_SetConfig(huart) == HAL_ERROR)
504 {
505 return HAL_ERROR;
506 }
507
508 if (huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT)
509 {
510 UART_AdvFeatureConfig(huart);
511 }
512
513 /* In LIN mode, the following bits must be kept cleared:
514 - LINEN and CLKEN bits in the USART_CR2 register,
515 - SCEN and IREN bits in the USART_CR3 register.*/
516 CLEAR_BIT(huart->Instance->CR2, USART_CR2_CLKEN);
517 CLEAR_BIT(huart->Instance->CR3, (USART_CR3_HDSEL | USART_CR3_IREN | USART_CR3_SCEN));
518
519 /* Enable the LIN mode by setting the LINEN bit in the CR2 register */
520 SET_BIT(huart->Instance->CR2, USART_CR2_LINEN);
521
522 /* Set the USART LIN Break detection length. */
523 MODIFY_REG(huart->Instance->CR2, USART_CR2_LBDL, BreakDetectLength);
524
525 __HAL_UART_ENABLE(huart);
526
527 /* TEACK and/or REACK to check before moving huart->gState and huart->RxState to Ready */
528 return (UART_CheckIdleState(huart));
529 }
530
531
532 /**
533 * @brief Initialize the multiprocessor mode according to the specified
534 * parameters in the UART_InitTypeDef and initialize the associated handle.
535 * @param huart UART handle.
536 * @param Address UART node address (4-, 6-, 7- or 8-bit long).
537 * @param WakeUpMethod Specifies the UART wakeup method.
538 * This parameter can be one of the following values:
539 * @arg @ref UART_WAKEUPMETHOD_IDLELINE WakeUp by an idle line detection
540 * @arg @ref UART_WAKEUPMETHOD_ADDRESSMARK WakeUp by an address mark
541 * @note If the user resorts to idle line detection wake up, the Address parameter
542 * is useless and ignored by the initialization function.
543 * @note If the user resorts to address mark wake up, the address length detection
544 * is configured by default to 4 bits only. For the UART to be able to
545 * manage 6-, 7- or 8-bit long addresses detection, the API
546 * HAL_MultiProcessorEx_AddressLength_Set() must be called after
547 * HAL_MultiProcessor_Init().
548 * @retval HAL status
549 */
HAL_MultiProcessor_Init(UART_HandleTypeDef * huart,uint8_t Address,uint32_t WakeUpMethod)550 HAL_StatusTypeDef HAL_MultiProcessor_Init(UART_HandleTypeDef *huart, uint8_t Address, uint32_t WakeUpMethod)
551 {
552 /* Check the UART handle allocation */
553 if (huart == NULL)
554 {
555 return HAL_ERROR;
556 }
557
558 /* Check the wake up method parameter */
559 assert_param(IS_UART_WAKEUPMETHOD(WakeUpMethod));
560
561 if (huart->gState == HAL_UART_STATE_RESET)
562 {
563 /* Allocate lock resource and initialize it */
564 huart->Lock = HAL_UNLOCKED;
565
566 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
567 UART_InitCallbacksToDefault(huart);
568
569 if (huart->MspInitCallback == NULL)
570 {
571 huart->MspInitCallback = HAL_UART_MspInit;
572 }
573
574 /* Init the low level hardware */
575 huart->MspInitCallback(huart);
576 #else
577 /* Init the low level hardware : GPIO, CLOCK */
578 HAL_UART_MspInit(huart);
579 #endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
580 }
581
582 huart->gState = HAL_UART_STATE_BUSY;
583
584 __HAL_UART_DISABLE(huart);
585
586 /* Set the UART Communication parameters */
587 if (UART_SetConfig(huart) == HAL_ERROR)
588 {
589 return HAL_ERROR;
590 }
591
592 if (huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT)
593 {
594 UART_AdvFeatureConfig(huart);
595 }
596
597 /* In multiprocessor mode, the following bits must be kept cleared:
598 - LINEN and CLKEN bits in the USART_CR2 register,
599 - SCEN, HDSEL and IREN bits in the USART_CR3 register. */
600 CLEAR_BIT(huart->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN));
601 CLEAR_BIT(huart->Instance->CR3, (USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN));
602
603 if (WakeUpMethod == UART_WAKEUPMETHOD_ADDRESSMARK)
604 {
605 /* If address mark wake up method is chosen, set the USART address node */
606 MODIFY_REG(huart->Instance->CR2, USART_CR2_ADD, ((uint32_t)Address << UART_CR2_ADDRESS_LSB_POS));
607 }
608
609 /* Set the wake up method by setting the WAKE bit in the CR1 register */
610 MODIFY_REG(huart->Instance->CR1, USART_CR1_WAKE, WakeUpMethod);
611
612 __HAL_UART_ENABLE(huart);
613
614 /* TEACK and/or REACK to check before moving huart->gState and huart->RxState to Ready */
615 return (UART_CheckIdleState(huart));
616 }
617
618
619 /**
620 * @brief DeInitialize the UART peripheral.
621 * @param huart UART handle.
622 * @retval HAL status
623 */
HAL_UART_DeInit(UART_HandleTypeDef * huart)624 HAL_StatusTypeDef HAL_UART_DeInit(UART_HandleTypeDef *huart)
625 {
626 /* Check the UART handle allocation */
627 if (huart == NULL)
628 {
629 return HAL_ERROR;
630 }
631
632 /* Check the parameters */
633 assert_param((IS_UART_INSTANCE(huart->Instance)) || (IS_LPUART_INSTANCE(huart->Instance)));
634
635 huart->gState = HAL_UART_STATE_BUSY;
636
637 __HAL_UART_DISABLE(huart);
638
639 huart->Instance->CR1 = 0x0U;
640 huart->Instance->CR2 = 0x0U;
641 huart->Instance->CR3 = 0x0U;
642
643 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
644 if (huart->MspDeInitCallback == NULL)
645 {
646 huart->MspDeInitCallback = HAL_UART_MspDeInit;
647 }
648 /* DeInit the low level hardware */
649 huart->MspDeInitCallback(huart);
650 #else
651 /* DeInit the low level hardware */
652 HAL_UART_MspDeInit(huart);
653 #endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
654
655 huart->ErrorCode = HAL_UART_ERROR_NONE;
656 huart->gState = HAL_UART_STATE_RESET;
657 huart->RxState = HAL_UART_STATE_RESET;
658 huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
659 huart->RxEventType = HAL_UART_RXEVENT_TC;
660
661 __HAL_UNLOCK(huart);
662
663 return HAL_OK;
664 }
665
666 /**
667 * @brief Initialize the UART MSP.
668 * @param huart UART handle.
669 * @retval None
670 */
HAL_UART_MspInit(UART_HandleTypeDef * huart)671 __weak void HAL_UART_MspInit(UART_HandleTypeDef *huart)
672 {
673 /* Prevent unused argument(s) compilation warning */
674 UNUSED(huart);
675
676 /* NOTE : This function should not be modified, when the callback is needed,
677 the HAL_UART_MspInit can be implemented in the user file
678 */
679 }
680
681 /**
682 * @brief DeInitialize the UART MSP.
683 * @param huart UART handle.
684 * @retval None
685 */
HAL_UART_MspDeInit(UART_HandleTypeDef * huart)686 __weak void HAL_UART_MspDeInit(UART_HandleTypeDef *huart)
687 {
688 /* Prevent unused argument(s) compilation warning */
689 UNUSED(huart);
690
691 /* NOTE : This function should not be modified, when the callback is needed,
692 the HAL_UART_MspDeInit can be implemented in the user file
693 */
694 }
695
696 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
697 /**
698 * @brief Register a User UART Callback
699 * To be used instead of the weak predefined callback
700 * @note The HAL_UART_RegisterCallback() may be called before HAL_UART_Init(), HAL_HalfDuplex_Init(),
701 * HAL_LIN_Init(), HAL_MultiProcessor_Init() or HAL_RS485Ex_Init() in HAL_UART_STATE_RESET to register
702 * callbacks for HAL_UART_MSPINIT_CB_ID and HAL_UART_MSPDEINIT_CB_ID
703 * @param huart uart handle
704 * @param CallbackID ID of the callback to be registered
705 * This parameter can be one of the following values:
706 * @arg @ref HAL_UART_TX_HALFCOMPLETE_CB_ID Tx Half Complete Callback ID
707 * @arg @ref HAL_UART_TX_COMPLETE_CB_ID Tx Complete Callback ID
708 * @arg @ref HAL_UART_RX_HALFCOMPLETE_CB_ID Rx Half Complete Callback ID
709 * @arg @ref HAL_UART_RX_COMPLETE_CB_ID Rx Complete Callback ID
710 * @arg @ref HAL_UART_ERROR_CB_ID Error Callback ID
711 * @arg @ref HAL_UART_ABORT_COMPLETE_CB_ID Abort Complete Callback ID
712 * @arg @ref HAL_UART_ABORT_TRANSMIT_COMPLETE_CB_ID Abort Transmit Complete Callback ID
713 * @arg @ref HAL_UART_ABORT_RECEIVE_COMPLETE_CB_ID Abort Receive Complete Callback ID
714 * @arg @ref HAL_UART_WAKEUP_CB_ID Wakeup Callback ID
715 * @arg @ref HAL_UART_RX_FIFO_FULL_CB_ID Rx Fifo Full Callback ID
716 * @arg @ref HAL_UART_TX_FIFO_EMPTY_CB_ID Tx Fifo Empty Callback ID
717 * @arg @ref HAL_UART_MSPINIT_CB_ID MspInit Callback ID
718 * @arg @ref HAL_UART_MSPDEINIT_CB_ID MspDeInit Callback ID
719 * @param pCallback pointer to the Callback function
720 * @retval HAL status
721 */
HAL_UART_RegisterCallback(UART_HandleTypeDef * huart,HAL_UART_CallbackIDTypeDef CallbackID,pUART_CallbackTypeDef pCallback)722 HAL_StatusTypeDef HAL_UART_RegisterCallback(UART_HandleTypeDef *huart, HAL_UART_CallbackIDTypeDef CallbackID,
723 pUART_CallbackTypeDef pCallback)
724 {
725 HAL_StatusTypeDef status = HAL_OK;
726
727 if (pCallback == NULL)
728 {
729 huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
730
731 return HAL_ERROR;
732 }
733
734 if (huart->gState == HAL_UART_STATE_READY)
735 {
736 switch (CallbackID)
737 {
738 case HAL_UART_TX_HALFCOMPLETE_CB_ID :
739 huart->TxHalfCpltCallback = pCallback;
740 break;
741
742 case HAL_UART_TX_COMPLETE_CB_ID :
743 huart->TxCpltCallback = pCallback;
744 break;
745
746 case HAL_UART_RX_HALFCOMPLETE_CB_ID :
747 huart->RxHalfCpltCallback = pCallback;
748 break;
749
750 case HAL_UART_RX_COMPLETE_CB_ID :
751 huart->RxCpltCallback = pCallback;
752 break;
753
754 case HAL_UART_ERROR_CB_ID :
755 huart->ErrorCallback = pCallback;
756 break;
757
758 case HAL_UART_ABORT_COMPLETE_CB_ID :
759 huart->AbortCpltCallback = pCallback;
760 break;
761
762 case HAL_UART_ABORT_TRANSMIT_COMPLETE_CB_ID :
763 huart->AbortTransmitCpltCallback = pCallback;
764 break;
765
766 case HAL_UART_ABORT_RECEIVE_COMPLETE_CB_ID :
767 huart->AbortReceiveCpltCallback = pCallback;
768 break;
769
770 case HAL_UART_WAKEUP_CB_ID :
771 huart->WakeupCallback = pCallback;
772 break;
773
774 case HAL_UART_RX_FIFO_FULL_CB_ID :
775 huart->RxFifoFullCallback = pCallback;
776 break;
777
778 case HAL_UART_TX_FIFO_EMPTY_CB_ID :
779 huart->TxFifoEmptyCallback = pCallback;
780 break;
781
782 case HAL_UART_MSPINIT_CB_ID :
783 huart->MspInitCallback = pCallback;
784 break;
785
786 case HAL_UART_MSPDEINIT_CB_ID :
787 huart->MspDeInitCallback = pCallback;
788 break;
789
790 default :
791 huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
792
793 status = HAL_ERROR;
794 break;
795 }
796 }
797 else if (huart->gState == HAL_UART_STATE_RESET)
798 {
799 switch (CallbackID)
800 {
801 case HAL_UART_MSPINIT_CB_ID :
802 huart->MspInitCallback = pCallback;
803 break;
804
805 case HAL_UART_MSPDEINIT_CB_ID :
806 huart->MspDeInitCallback = pCallback;
807 break;
808
809 default :
810 huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
811
812 status = HAL_ERROR;
813 break;
814 }
815 }
816 else
817 {
818 huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
819
820 status = HAL_ERROR;
821 }
822
823 return status;
824 }
825
826 /**
827 * @brief Unregister an UART Callback
828 * UART callaback is redirected to the weak predefined callback
829 * @note The HAL_UART_UnRegisterCallback() may be called before HAL_UART_Init(), HAL_HalfDuplex_Init(),
830 * HAL_LIN_Init(), HAL_MultiProcessor_Init() or HAL_RS485Ex_Init() in HAL_UART_STATE_RESET to un-register
831 * callbacks for HAL_UART_MSPINIT_CB_ID and HAL_UART_MSPDEINIT_CB_ID
832 * @param huart uart handle
833 * @param CallbackID ID of the callback to be unregistered
834 * This parameter can be one of the following values:
835 * @arg @ref HAL_UART_TX_HALFCOMPLETE_CB_ID Tx Half Complete Callback ID
836 * @arg @ref HAL_UART_TX_COMPLETE_CB_ID Tx Complete Callback ID
837 * @arg @ref HAL_UART_RX_HALFCOMPLETE_CB_ID Rx Half Complete Callback ID
838 * @arg @ref HAL_UART_RX_COMPLETE_CB_ID Rx Complete Callback ID
839 * @arg @ref HAL_UART_ERROR_CB_ID Error Callback ID
840 * @arg @ref HAL_UART_ABORT_COMPLETE_CB_ID Abort Complete Callback ID
841 * @arg @ref HAL_UART_ABORT_TRANSMIT_COMPLETE_CB_ID Abort Transmit Complete Callback ID
842 * @arg @ref HAL_UART_ABORT_RECEIVE_COMPLETE_CB_ID Abort Receive Complete Callback ID
843 * @arg @ref HAL_UART_WAKEUP_CB_ID Wakeup Callback ID
844 * @arg @ref HAL_UART_RX_FIFO_FULL_CB_ID Rx Fifo Full Callback ID
845 * @arg @ref HAL_UART_TX_FIFO_EMPTY_CB_ID Tx Fifo Empty Callback ID
846 * @arg @ref HAL_UART_MSPINIT_CB_ID MspInit Callback ID
847 * @arg @ref HAL_UART_MSPDEINIT_CB_ID MspDeInit Callback ID
848 * @retval HAL status
849 */
HAL_UART_UnRegisterCallback(UART_HandleTypeDef * huart,HAL_UART_CallbackIDTypeDef CallbackID)850 HAL_StatusTypeDef HAL_UART_UnRegisterCallback(UART_HandleTypeDef *huart, HAL_UART_CallbackIDTypeDef CallbackID)
851 {
852 HAL_StatusTypeDef status = HAL_OK;
853
854 if (HAL_UART_STATE_READY == huart->gState)
855 {
856 switch (CallbackID)
857 {
858 case HAL_UART_TX_HALFCOMPLETE_CB_ID :
859 huart->TxHalfCpltCallback = HAL_UART_TxHalfCpltCallback; /* Legacy weak TxHalfCpltCallback */
860 break;
861
862 case HAL_UART_TX_COMPLETE_CB_ID :
863 huart->TxCpltCallback = HAL_UART_TxCpltCallback; /* Legacy weak TxCpltCallback */
864 break;
865
866 case HAL_UART_RX_HALFCOMPLETE_CB_ID :
867 huart->RxHalfCpltCallback = HAL_UART_RxHalfCpltCallback; /* Legacy weak RxHalfCpltCallback */
868 break;
869
870 case HAL_UART_RX_COMPLETE_CB_ID :
871 huart->RxCpltCallback = HAL_UART_RxCpltCallback; /* Legacy weak RxCpltCallback */
872 break;
873
874 case HAL_UART_ERROR_CB_ID :
875 huart->ErrorCallback = HAL_UART_ErrorCallback; /* Legacy weak ErrorCallback */
876 break;
877
878 case HAL_UART_ABORT_COMPLETE_CB_ID :
879 huart->AbortCpltCallback = HAL_UART_AbortCpltCallback; /* Legacy weak AbortCpltCallback */
880 break;
881
882 case HAL_UART_ABORT_TRANSMIT_COMPLETE_CB_ID :
883 huart->AbortTransmitCpltCallback = HAL_UART_AbortTransmitCpltCallback; /* Legacy weak
884 AbortTransmitCpltCallback */
885 break;
886
887 case HAL_UART_ABORT_RECEIVE_COMPLETE_CB_ID :
888 huart->AbortReceiveCpltCallback = HAL_UART_AbortReceiveCpltCallback; /* Legacy weak
889 AbortReceiveCpltCallback */
890 break;
891
892 case HAL_UART_WAKEUP_CB_ID :
893 huart->WakeupCallback = HAL_UARTEx_WakeupCallback; /* Legacy weak WakeupCallback */
894 break;
895
896 case HAL_UART_RX_FIFO_FULL_CB_ID :
897 huart->RxFifoFullCallback = HAL_UARTEx_RxFifoFullCallback; /* Legacy weak RxFifoFullCallback */
898 break;
899
900 case HAL_UART_TX_FIFO_EMPTY_CB_ID :
901 huart->TxFifoEmptyCallback = HAL_UARTEx_TxFifoEmptyCallback; /* Legacy weak TxFifoEmptyCallback */
902 break;
903
904 case HAL_UART_MSPINIT_CB_ID :
905 huart->MspInitCallback = HAL_UART_MspInit; /* Legacy weak MspInitCallback */
906 break;
907
908 case HAL_UART_MSPDEINIT_CB_ID :
909 huart->MspDeInitCallback = HAL_UART_MspDeInit; /* Legacy weak MspDeInitCallback */
910 break;
911
912 default :
913 huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
914
915 status = HAL_ERROR;
916 break;
917 }
918 }
919 else if (HAL_UART_STATE_RESET == huart->gState)
920 {
921 switch (CallbackID)
922 {
923 case HAL_UART_MSPINIT_CB_ID :
924 huart->MspInitCallback = HAL_UART_MspInit;
925 break;
926
927 case HAL_UART_MSPDEINIT_CB_ID :
928 huart->MspDeInitCallback = HAL_UART_MspDeInit;
929 break;
930
931 default :
932 huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
933
934 status = HAL_ERROR;
935 break;
936 }
937 }
938 else
939 {
940 huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
941
942 status = HAL_ERROR;
943 }
944
945 return status;
946 }
947
948 /**
949 * @brief Register a User UART Rx Event Callback
950 * To be used instead of the weak predefined callback
951 * @param huart Uart handle
952 * @param pCallback Pointer to the Rx Event Callback function
953 * @retval HAL status
954 */
HAL_UART_RegisterRxEventCallback(UART_HandleTypeDef * huart,pUART_RxEventCallbackTypeDef pCallback)955 HAL_StatusTypeDef HAL_UART_RegisterRxEventCallback(UART_HandleTypeDef *huart, pUART_RxEventCallbackTypeDef pCallback)
956 {
957 HAL_StatusTypeDef status = HAL_OK;
958
959 if (pCallback == NULL)
960 {
961 huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
962
963 return HAL_ERROR;
964 }
965
966 /* Process locked */
967 __HAL_LOCK(huart);
968
969 if (huart->gState == HAL_UART_STATE_READY)
970 {
971 huart->RxEventCallback = pCallback;
972 }
973 else
974 {
975 huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
976
977 status = HAL_ERROR;
978 }
979
980 /* Release Lock */
981 __HAL_UNLOCK(huart);
982
983 return status;
984 }
985
986 /**
987 * @brief UnRegister the UART Rx Event Callback
988 * UART Rx Event Callback is redirected to the weak HAL_UARTEx_RxEventCallback() predefined callback
989 * @param huart Uart handle
990 * @retval HAL status
991 */
HAL_UART_UnRegisterRxEventCallback(UART_HandleTypeDef * huart)992 HAL_StatusTypeDef HAL_UART_UnRegisterRxEventCallback(UART_HandleTypeDef *huart)
993 {
994 HAL_StatusTypeDef status = HAL_OK;
995
996 /* Process locked */
997 __HAL_LOCK(huart);
998
999 if (huart->gState == HAL_UART_STATE_READY)
1000 {
1001 huart->RxEventCallback = HAL_UARTEx_RxEventCallback; /* Legacy weak UART Rx Event Callback */
1002 }
1003 else
1004 {
1005 huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
1006
1007 status = HAL_ERROR;
1008 }
1009
1010 /* Release Lock */
1011 __HAL_UNLOCK(huart);
1012 return status;
1013 }
1014
1015 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
1016
1017 /**
1018 * @}
1019 */
1020
1021 /** @defgroup UART_Exported_Functions_Group2 IO operation functions
1022 * @brief UART Transmit/Receive functions
1023 *
1024 @verbatim
1025 ===============================================================================
1026 ##### IO operation functions #####
1027 ===============================================================================
1028 This subsection provides a set of functions allowing to manage the UART asynchronous
1029 and Half duplex data transfers.
1030
1031 (#) There are two mode of transfer:
1032 (+) Blocking mode: The communication is performed in polling mode.
1033 The HAL status of all data processing is returned by the same function
1034 after finishing transfer.
1035 (+) Non-Blocking mode: The communication is performed using Interrupts
1036 or DMA, These API's return the HAL status.
1037 The end of the data processing will be indicated through the
1038 dedicated UART IRQ when using Interrupt mode or the DMA IRQ when
1039 using DMA mode.
1040 The HAL_UART_TxCpltCallback(), HAL_UART_RxCpltCallback() user callbacks
1041 will be executed respectively at the end of the transmit or Receive process
1042 The HAL_UART_ErrorCallback()user callback will be executed when a communication error is detected
1043
1044 (#) Blocking mode API's are :
1045 (+) HAL_UART_Transmit()
1046 (+) HAL_UART_Receive()
1047
1048 (#) Non-Blocking mode API's with Interrupt are :
1049 (+) HAL_UART_Transmit_IT()
1050 (+) HAL_UART_Receive_IT()
1051 (+) HAL_UART_IRQHandler()
1052
1053 (#) Non-Blocking mode API's with DMA are :
1054 (+) HAL_UART_Transmit_DMA()
1055 (+) HAL_UART_Receive_DMA()
1056 (+) HAL_UART_DMAPause()
1057 (+) HAL_UART_DMAResume()
1058 (+) HAL_UART_DMAStop()
1059
1060 (#) A set of Transfer Complete Callbacks are provided in Non_Blocking mode:
1061 (+) HAL_UART_TxHalfCpltCallback()
1062 (+) HAL_UART_TxCpltCallback()
1063 (+) HAL_UART_RxHalfCpltCallback()
1064 (+) HAL_UART_RxCpltCallback()
1065 (+) HAL_UART_ErrorCallback()
1066
1067 (#) Non-Blocking mode transfers could be aborted using Abort API's :
1068 (+) HAL_UART_Abort()
1069 (+) HAL_UART_AbortTransmit()
1070 (+) HAL_UART_AbortReceive()
1071 (+) HAL_UART_Abort_IT()
1072 (+) HAL_UART_AbortTransmit_IT()
1073 (+) HAL_UART_AbortReceive_IT()
1074
1075 (#) For Abort services based on interrupts (HAL_UART_Abortxxx_IT), a set of Abort Complete Callbacks are provided:
1076 (+) HAL_UART_AbortCpltCallback()
1077 (+) HAL_UART_AbortTransmitCpltCallback()
1078 (+) HAL_UART_AbortReceiveCpltCallback()
1079
1080 (#) A Rx Event Reception Callback (Rx event notification) is available for Non_Blocking modes of enhanced
1081 reception services:
1082 (+) HAL_UARTEx_RxEventCallback()
1083
1084 (#) In Non-Blocking mode transfers, possible errors are split into 2 categories.
1085 Errors are handled as follows :
1086 (+) Error is considered as Recoverable and non blocking : Transfer could go till end, but error severity is
1087 to be evaluated by user : this concerns Frame Error, Parity Error or Noise Error
1088 in Interrupt mode reception .
1089 Received character is then retrieved and stored in Rx buffer, Error code is set to allow user
1090 to identify error type, and HAL_UART_ErrorCallback() user callback is executed.
1091 Transfer is kept ongoing on UART side.
1092 If user wants to abort it, Abort services should be called by user.
1093 (+) Error is considered as Blocking : Transfer could not be completed properly and is aborted.
1094 This concerns Overrun Error In Interrupt mode reception and all errors in DMA mode.
1095 Error code is set to allow user to identify error type, and HAL_UART_ErrorCallback()
1096 user callback is executed.
1097
1098 -@- In the Half duplex communication, it is forbidden to run the transmit
1099 and receive process in parallel, the UART state HAL_UART_STATE_BUSY_TX_RX can't be useful.
1100
1101 @endverbatim
1102 * @{
1103 */
1104
1105 /**
1106 * @brief Send an amount of data in blocking mode.
1107 * @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
1108 * the sent data is handled as a set of u16. In this case, Size must indicate the number
1109 * of u16 provided through pData.
1110 * @note When FIFO mode is enabled, writing a data in the TDR register adds one
1111 * data to the TXFIFO. Write operations to the TDR register are performed
1112 * when TXFNF flag is set. From hardware perspective, TXFNF flag and
1113 * TXE are mapped on the same bit-field.
1114 * @param huart UART handle.
1115 * @param pData Pointer to data buffer (u8 or u16 data elements).
1116 * @param Size Amount of data elements (u8 or u16) to be sent.
1117 * @param Timeout Timeout duration.
1118 * @retval HAL status
1119 */
HAL_UART_Transmit(UART_HandleTypeDef * huart,const uint8_t * pData,uint16_t Size,uint32_t Timeout)1120 HAL_StatusTypeDef HAL_UART_Transmit(UART_HandleTypeDef *huart, const uint8_t *pData, uint16_t Size, uint32_t Timeout)
1121 {
1122 const uint8_t *pdata8bits;
1123 const uint16_t *pdata16bits;
1124 uint32_t tickstart;
1125
1126 /* Check that a Tx process is not already ongoing */
1127 if (huart->gState == HAL_UART_STATE_READY)
1128 {
1129 if ((pData == NULL) || (Size == 0U))
1130 {
1131 return HAL_ERROR;
1132 }
1133
1134 huart->ErrorCode = HAL_UART_ERROR_NONE;
1135 huart->gState = HAL_UART_STATE_BUSY_TX;
1136
1137 /* Init tickstart for timeout management */
1138 tickstart = HAL_GetTick();
1139
1140 huart->TxXferSize = Size;
1141 huart->TxXferCount = Size;
1142
1143 /* In case of 9bits/No Parity transfer, pData needs to be handled as a uint16_t pointer */
1144 if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
1145 {
1146 pdata8bits = NULL;
1147 pdata16bits = (const uint16_t *) pData;
1148 }
1149 else
1150 {
1151 pdata8bits = pData;
1152 pdata16bits = NULL;
1153 }
1154
1155 while (huart->TxXferCount > 0U)
1156 {
1157 if (UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
1158 {
1159
1160 huart->gState = HAL_UART_STATE_READY;
1161
1162 return HAL_TIMEOUT;
1163 }
1164 if (pdata8bits == NULL)
1165 {
1166 huart->Instance->TDR = (uint16_t)(*pdata16bits & 0x01FFU);
1167 pdata16bits++;
1168 }
1169 else
1170 {
1171 huart->Instance->TDR = (uint8_t)(*pdata8bits & 0xFFU);
1172 pdata8bits++;
1173 }
1174 huart->TxXferCount--;
1175 }
1176
1177 if (UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TC, RESET, tickstart, Timeout) != HAL_OK)
1178 {
1179 huart->gState = HAL_UART_STATE_READY;
1180
1181 return HAL_TIMEOUT;
1182 }
1183
1184 /* At end of Tx process, restore huart->gState to Ready */
1185 huart->gState = HAL_UART_STATE_READY;
1186
1187 return HAL_OK;
1188 }
1189 else
1190 {
1191 return HAL_BUSY;
1192 }
1193 }
1194
1195 /**
1196 * @brief Receive an amount of data in blocking mode.
1197 * @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
1198 * the received data is handled as a set of u16. In this case, Size must indicate the number
1199 * of u16 available through pData.
1200 * @note When FIFO mode is enabled, the RXFNE flag is set as long as the RXFIFO
1201 * is not empty. Read operations from the RDR register are performed when
1202 * RXFNE flag is set. From hardware perspective, RXFNE flag and
1203 * RXNE are mapped on the same bit-field.
1204 * @param huart UART handle.
1205 * @param pData Pointer to data buffer (u8 or u16 data elements).
1206 * @param Size Amount of data elements (u8 or u16) to be received.
1207 * @param Timeout Timeout duration.
1208 * @retval HAL status
1209 */
HAL_UART_Receive(UART_HandleTypeDef * huart,uint8_t * pData,uint16_t Size,uint32_t Timeout)1210 HAL_StatusTypeDef HAL_UART_Receive(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout)
1211 {
1212 uint8_t *pdata8bits;
1213 uint16_t *pdata16bits;
1214 uint16_t uhMask;
1215 uint32_t tickstart;
1216
1217 /* Check that a Rx process is not already ongoing */
1218 if (huart->RxState == HAL_UART_STATE_READY)
1219 {
1220 if ((pData == NULL) || (Size == 0U))
1221 {
1222 return HAL_ERROR;
1223 }
1224
1225 huart->ErrorCode = HAL_UART_ERROR_NONE;
1226 huart->RxState = HAL_UART_STATE_BUSY_RX;
1227 huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
1228
1229 /* Init tickstart for timeout management */
1230 tickstart = HAL_GetTick();
1231
1232 huart->RxXferSize = Size;
1233 huart->RxXferCount = Size;
1234
1235 /* Computation of UART mask to apply to RDR register */
1236 UART_MASK_COMPUTATION(huart);
1237 uhMask = huart->Mask;
1238
1239 /* In case of 9bits/No Parity transfer, pRxData needs to be handled as a uint16_t pointer */
1240 if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
1241 {
1242 pdata8bits = NULL;
1243 pdata16bits = (uint16_t *) pData;
1244 }
1245 else
1246 {
1247 pdata8bits = pData;
1248 pdata16bits = NULL;
1249 }
1250
1251 /* as long as data have to be received */
1252 while (huart->RxXferCount > 0U)
1253 {
1254 if (UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
1255 {
1256 huart->RxState = HAL_UART_STATE_READY;
1257
1258 return HAL_TIMEOUT;
1259 }
1260 if (pdata8bits == NULL)
1261 {
1262 *pdata16bits = (uint16_t)(huart->Instance->RDR & uhMask);
1263 pdata16bits++;
1264 }
1265 else
1266 {
1267 *pdata8bits = (uint8_t)(huart->Instance->RDR & (uint8_t)uhMask);
1268 pdata8bits++;
1269 }
1270 huart->RxXferCount--;
1271 }
1272
1273 /* At end of Rx process, restore huart->RxState to Ready */
1274 huart->RxState = HAL_UART_STATE_READY;
1275
1276 return HAL_OK;
1277 }
1278 else
1279 {
1280 return HAL_BUSY;
1281 }
1282 }
1283
1284 /**
1285 * @brief Send an amount of data in interrupt mode.
1286 * @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
1287 * the sent data is handled as a set of u16. In this case, Size must indicate the number
1288 * of u16 provided through pData.
1289 * @param huart UART handle.
1290 * @param pData Pointer to data buffer (u8 or u16 data elements).
1291 * @param Size Amount of data elements (u8 or u16) to be sent.
1292 * @retval HAL status
1293 */
HAL_UART_Transmit_IT(UART_HandleTypeDef * huart,const uint8_t * pData,uint16_t Size)1294 HAL_StatusTypeDef HAL_UART_Transmit_IT(UART_HandleTypeDef *huart, const uint8_t *pData, uint16_t Size)
1295 {
1296 /* Check that a Tx process is not already ongoing */
1297 if (huart->gState == HAL_UART_STATE_READY)
1298 {
1299 if ((pData == NULL) || (Size == 0U))
1300 {
1301 return HAL_ERROR;
1302 }
1303
1304 huart->pTxBuffPtr = pData;
1305 huart->TxXferSize = Size;
1306 huart->TxXferCount = Size;
1307 huart->TxISR = NULL;
1308
1309 huart->ErrorCode = HAL_UART_ERROR_NONE;
1310 huart->gState = HAL_UART_STATE_BUSY_TX;
1311
1312 /* Configure Tx interrupt processing */
1313 if (huart->FifoMode == UART_FIFOMODE_ENABLE)
1314 {
1315 /* Set the Tx ISR function pointer according to the data word length */
1316 if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
1317 {
1318 huart->TxISR = UART_TxISR_16BIT_FIFOEN;
1319 }
1320 else
1321 {
1322 huart->TxISR = UART_TxISR_8BIT_FIFOEN;
1323 }
1324
1325 /* Enable the TX FIFO threshold interrupt */
1326 ATOMIC_SET_BIT(huart->Instance->CR3, USART_CR3_TXFTIE);
1327 }
1328 else
1329 {
1330 /* Set the Tx ISR function pointer according to the data word length */
1331 if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
1332 {
1333 huart->TxISR = UART_TxISR_16BIT;
1334 }
1335 else
1336 {
1337 huart->TxISR = UART_TxISR_8BIT;
1338 }
1339
1340 /* Enable the Transmit Data Register Empty interrupt */
1341 ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_TXEIE_TXFNFIE);
1342 }
1343
1344 return HAL_OK;
1345 }
1346 else
1347 {
1348 return HAL_BUSY;
1349 }
1350 }
1351
1352 /**
1353 * @brief Receive an amount of data in interrupt mode.
1354 * @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
1355 * the received data is handled as a set of u16. In this case, Size must indicate the number
1356 * of u16 available through pData.
1357 * @param huart UART handle.
1358 * @param pData Pointer to data buffer (u8 or u16 data elements).
1359 * @param Size Amount of data elements (u8 or u16) to be received.
1360 * @retval HAL status
1361 */
HAL_UART_Receive_IT(UART_HandleTypeDef * huart,uint8_t * pData,uint16_t Size)1362 HAL_StatusTypeDef HAL_UART_Receive_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
1363 {
1364 /* Check that a Rx process is not already ongoing */
1365 if (huart->RxState == HAL_UART_STATE_READY)
1366 {
1367 if ((pData == NULL) || (Size == 0U))
1368 {
1369 return HAL_ERROR;
1370 }
1371
1372 /* Set Reception type to Standard reception */
1373 huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
1374
1375 if (!(IS_LPUART_INSTANCE(huart->Instance)))
1376 {
1377 /* Check that USART RTOEN bit is set */
1378 if (READ_BIT(huart->Instance->CR2, USART_CR2_RTOEN) != 0U)
1379 {
1380 /* Enable the UART Receiver Timeout Interrupt */
1381 ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_RTOIE);
1382 }
1383 }
1384
1385 return (UART_Start_Receive_IT(huart, pData, Size));
1386 }
1387 else
1388 {
1389 return HAL_BUSY;
1390 }
1391 }
1392
1393 /**
1394 * @brief Send an amount of data in DMA mode.
1395 * @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
1396 * the sent data is handled as a set of u16. In this case, Size must indicate the number
1397 * of u16 provided through pData.
1398 * @param huart UART handle.
1399 * @param pData Pointer to data buffer (u8 or u16 data elements).
1400 * @param Size Amount of data elements (u8 or u16) to be sent.
1401 * @retval HAL status
1402 */
HAL_UART_Transmit_DMA(UART_HandleTypeDef * huart,const uint8_t * pData,uint16_t Size)1403 HAL_StatusTypeDef HAL_UART_Transmit_DMA(UART_HandleTypeDef *huart, const uint8_t *pData, uint16_t Size)
1404 {
1405 /* Check that a Tx process is not already ongoing */
1406 if (huart->gState == HAL_UART_STATE_READY)
1407 {
1408 if ((pData == NULL) || (Size == 0U))
1409 {
1410 return HAL_ERROR;
1411 }
1412
1413 huart->pTxBuffPtr = pData;
1414 huart->TxXferSize = Size;
1415 huart->TxXferCount = Size;
1416
1417 huart->ErrorCode = HAL_UART_ERROR_NONE;
1418 huart->gState = HAL_UART_STATE_BUSY_TX;
1419
1420 if (huart->hdmatx != NULL)
1421 {
1422 /* Set the UART DMA transfer complete callback */
1423 huart->hdmatx->XferCpltCallback = UART_DMATransmitCplt;
1424
1425 /* Set the UART DMA Half transfer complete callback */
1426 huart->hdmatx->XferHalfCpltCallback = UART_DMATxHalfCplt;
1427
1428 /* Set the DMA error callback */
1429 huart->hdmatx->XferErrorCallback = UART_DMAError;
1430
1431 /* Set the DMA abort callback */
1432 huart->hdmatx->XferAbortCallback = NULL;
1433
1434 /* Enable the UART transmit DMA channel */
1435 if (HAL_DMA_Start_IT(huart->hdmatx, (uint32_t)huart->pTxBuffPtr, (uint32_t)&huart->Instance->TDR, Size) != HAL_OK)
1436 {
1437 /* Set error code to DMA */
1438 huart->ErrorCode = HAL_UART_ERROR_DMA;
1439
1440 /* Restore huart->gState to ready */
1441 huart->gState = HAL_UART_STATE_READY;
1442
1443 return HAL_ERROR;
1444 }
1445 }
1446 /* Clear the TC flag in the ICR register */
1447 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_TCF);
1448
1449 /* Enable the DMA transfer for transmit request by setting the DMAT bit
1450 in the UART CR3 register */
1451 ATOMIC_SET_BIT(huart->Instance->CR3, USART_CR3_DMAT);
1452
1453 return HAL_OK;
1454 }
1455 else
1456 {
1457 return HAL_BUSY;
1458 }
1459 }
1460
1461 /**
1462 * @brief Receive an amount of data in DMA mode.
1463 * @note When the UART parity is enabled (PCE = 1), the received data contain
1464 * the parity bit (MSB position).
1465 * @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
1466 * the received data is handled as a set of u16. In this case, Size must indicate the number
1467 * of u16 available through pData.
1468 * @param huart UART handle.
1469 * @param pData Pointer to data buffer (u8 or u16 data elements).
1470 * @param Size Amount of data elements (u8 or u16) to be received.
1471 * @retval HAL status
1472 */
HAL_UART_Receive_DMA(UART_HandleTypeDef * huart,uint8_t * pData,uint16_t Size)1473 HAL_StatusTypeDef HAL_UART_Receive_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
1474 {
1475 /* Check that a Rx process is not already ongoing */
1476 if (huart->RxState == HAL_UART_STATE_READY)
1477 {
1478 if ((pData == NULL) || (Size == 0U))
1479 {
1480 return HAL_ERROR;
1481 }
1482
1483 /* Set Reception type to Standard reception */
1484 huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
1485
1486 if (!(IS_LPUART_INSTANCE(huart->Instance)))
1487 {
1488 /* Check that USART RTOEN bit is set */
1489 if (READ_BIT(huart->Instance->CR2, USART_CR2_RTOEN) != 0U)
1490 {
1491 /* Enable the UART Receiver Timeout Interrupt */
1492 ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_RTOIE);
1493 }
1494 }
1495
1496 return (UART_Start_Receive_DMA(huart, pData, Size));
1497 }
1498 else
1499 {
1500 return HAL_BUSY;
1501 }
1502 }
1503
1504 /**
1505 * @brief Pause the DMA Transfer.
1506 * @param huart UART handle.
1507 * @retval HAL status
1508 */
HAL_UART_DMAPause(UART_HandleTypeDef * huart)1509 HAL_StatusTypeDef HAL_UART_DMAPause(UART_HandleTypeDef *huart)
1510 {
1511 const HAL_UART_StateTypeDef gstate = huart->gState;
1512 const HAL_UART_StateTypeDef rxstate = huart->RxState;
1513
1514 if ((HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT)) &&
1515 (gstate == HAL_UART_STATE_BUSY_TX))
1516 {
1517 /* Disable the UART DMA Tx request */
1518 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
1519 }
1520 if ((HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)) &&
1521 (rxstate == HAL_UART_STATE_BUSY_RX))
1522 {
1523 /* Disable PE and ERR (Frame error, noise error, overrun error) interrupts */
1524 ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE);
1525 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
1526
1527 /* Disable the UART DMA Rx request */
1528 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
1529 }
1530
1531 return HAL_OK;
1532 }
1533
1534 /**
1535 * @brief Resume the DMA Transfer.
1536 * @param huart UART handle.
1537 * @retval HAL status
1538 */
HAL_UART_DMAResume(UART_HandleTypeDef * huart)1539 HAL_StatusTypeDef HAL_UART_DMAResume(UART_HandleTypeDef *huart)
1540 {
1541 if (huart->gState == HAL_UART_STATE_BUSY_TX)
1542 {
1543 /* Enable the UART DMA Tx request */
1544 ATOMIC_SET_BIT(huart->Instance->CR3, USART_CR3_DMAT);
1545 }
1546 if (huart->RxState == HAL_UART_STATE_BUSY_RX)
1547 {
1548 /* Clear the Overrun flag before resuming the Rx transfer */
1549 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF);
1550
1551 /* Re-enable PE and ERR (Frame error, noise error, overrun error) interrupts */
1552 if (huart->Init.Parity != UART_PARITY_NONE)
1553 {
1554 ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_PEIE);
1555 }
1556 ATOMIC_SET_BIT(huart->Instance->CR3, USART_CR3_EIE);
1557
1558 /* Enable the UART DMA Rx request */
1559 ATOMIC_SET_BIT(huart->Instance->CR3, USART_CR3_DMAR);
1560 }
1561
1562 return HAL_OK;
1563 }
1564
1565 /**
1566 * @brief Stop the DMA Transfer.
1567 * @param huart UART handle.
1568 * @retval HAL status
1569 */
HAL_UART_DMAStop(UART_HandleTypeDef * huart)1570 HAL_StatusTypeDef HAL_UART_DMAStop(UART_HandleTypeDef *huart)
1571 {
1572 /* The Lock is not implemented on this API to allow the user application
1573 to call the HAL UART API under callbacks HAL_UART_TxCpltCallback() / HAL_UART_RxCpltCallback() /
1574 HAL_UART_TxHalfCpltCallback / HAL_UART_RxHalfCpltCallback:
1575 indeed, when HAL_DMA_Abort() API is called, the DMA TX/RX Transfer or Half Transfer complete
1576 interrupt is generated if the DMA transfer interruption occurs at the middle or at the end of
1577 the stream and the corresponding call back is executed. */
1578
1579 const HAL_UART_StateTypeDef gstate = huart->gState;
1580 const HAL_UART_StateTypeDef rxstate = huart->RxState;
1581
1582 /* Stop UART DMA Tx request if ongoing */
1583 if ((HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT)) &&
1584 (gstate == HAL_UART_STATE_BUSY_TX))
1585 {
1586 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
1587
1588 /* Abort the UART DMA Tx channel */
1589 if (huart->hdmatx != NULL)
1590 {
1591 if (HAL_DMA_Abort(huart->hdmatx) != HAL_OK)
1592 {
1593 if (HAL_DMA_GetError(huart->hdmatx) == HAL_DMA_ERROR_TIMEOUT)
1594 {
1595 /* Set error code to DMA */
1596 huart->ErrorCode = HAL_UART_ERROR_DMA;
1597
1598 return HAL_TIMEOUT;
1599 }
1600 }
1601 }
1602
1603 UART_EndTxTransfer(huart);
1604 }
1605
1606 /* Stop UART DMA Rx request if ongoing */
1607 if ((HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)) &&
1608 (rxstate == HAL_UART_STATE_BUSY_RX))
1609 {
1610 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
1611
1612 /* Abort the UART DMA Rx channel */
1613 if (huart->hdmarx != NULL)
1614 {
1615 if (HAL_DMA_Abort(huart->hdmarx) != HAL_OK)
1616 {
1617 if (HAL_DMA_GetError(huart->hdmarx) == HAL_DMA_ERROR_TIMEOUT)
1618 {
1619 /* Set error code to DMA */
1620 huart->ErrorCode = HAL_UART_ERROR_DMA;
1621
1622 return HAL_TIMEOUT;
1623 }
1624 }
1625 }
1626
1627 UART_EndRxTransfer(huart);
1628 }
1629
1630 return HAL_OK;
1631 }
1632
1633 /**
1634 * @brief Abort ongoing transfers (blocking mode).
1635 * @param huart UART handle.
1636 * @note This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode.
1637 * This procedure performs following operations :
1638 * - Disable UART Interrupts (Tx and Rx)
1639 * - Disable the DMA transfer in the peripheral register (if enabled)
1640 * - Abort DMA transfer by calling HAL_DMA_Abort (in case of transfer in DMA mode)
1641 * - Set handle State to READY
1642 * @note This procedure is executed in blocking mode : when exiting function, Abort is considered as completed.
1643 * @retval HAL status
1644 */
HAL_UART_Abort(UART_HandleTypeDef * huart)1645 HAL_StatusTypeDef HAL_UART_Abort(UART_HandleTypeDef *huart)
1646 {
1647 /* Disable TXE, TC, RXNE, PE, RXFT, TXFT and ERR (Frame error, noise error, overrun error) interrupts */
1648 ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE_RXFNEIE | USART_CR1_PEIE |
1649 USART_CR1_TXEIE_TXFNFIE | USART_CR1_TCIE));
1650 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE | USART_CR3_RXFTIE | USART_CR3_TXFTIE);
1651
1652 /* If Reception till IDLE event was ongoing, disable IDLEIE interrupt */
1653 if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
1654 {
1655 ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_IDLEIE));
1656 }
1657
1658 /* Abort the UART DMA Tx channel if enabled */
1659 if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
1660 {
1661 /* Disable the UART DMA Tx request if enabled */
1662 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
1663
1664 /* Abort the UART DMA Tx channel : use blocking DMA Abort API (no callback) */
1665 if (huart->hdmatx != NULL)
1666 {
1667 /* Set the UART DMA Abort callback to Null.
1668 No call back execution at end of DMA abort procedure */
1669 huart->hdmatx->XferAbortCallback = NULL;
1670
1671 if (HAL_DMA_Abort(huart->hdmatx) != HAL_OK)
1672 {
1673 if (HAL_DMA_GetError(huart->hdmatx) == HAL_DMA_ERROR_TIMEOUT)
1674 {
1675 /* Set error code to DMA */
1676 huart->ErrorCode = HAL_UART_ERROR_DMA;
1677
1678 return HAL_TIMEOUT;
1679 }
1680 }
1681 }
1682 }
1683
1684 /* Abort the UART DMA Rx channel if enabled */
1685 if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
1686 {
1687 /* Disable the UART DMA Rx request if enabled */
1688 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
1689
1690 /* Abort the UART DMA Rx channel : use blocking DMA Abort API (no callback) */
1691 if (huart->hdmarx != NULL)
1692 {
1693 /* Set the UART DMA Abort callback to Null.
1694 No call back execution at end of DMA abort procedure */
1695 huart->hdmarx->XferAbortCallback = NULL;
1696
1697 if (HAL_DMA_Abort(huart->hdmarx) != HAL_OK)
1698 {
1699 if (HAL_DMA_GetError(huart->hdmarx) == HAL_DMA_ERROR_TIMEOUT)
1700 {
1701 /* Set error code to DMA */
1702 huart->ErrorCode = HAL_UART_ERROR_DMA;
1703
1704 return HAL_TIMEOUT;
1705 }
1706 }
1707 }
1708 }
1709
1710 /* Reset Tx and Rx transfer counters */
1711 huart->TxXferCount = 0U;
1712 huart->RxXferCount = 0U;
1713
1714 /* Clear the Error flags in the ICR register */
1715 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
1716
1717 /* Flush the whole TX FIFO (if needed) */
1718 if (huart->FifoMode == UART_FIFOMODE_ENABLE)
1719 {
1720 __HAL_UART_SEND_REQ(huart, UART_TXDATA_FLUSH_REQUEST);
1721 }
1722
1723 /* Discard the received data */
1724 __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
1725
1726 /* Restore huart->gState and huart->RxState to Ready */
1727 huart->gState = HAL_UART_STATE_READY;
1728 huart->RxState = HAL_UART_STATE_READY;
1729 huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
1730
1731 huart->ErrorCode = HAL_UART_ERROR_NONE;
1732
1733 return HAL_OK;
1734 }
1735
1736 /**
1737 * @brief Abort ongoing Transmit transfer (blocking mode).
1738 * @param huart UART handle.
1739 * @note This procedure could be used for aborting any ongoing Tx transfer started in Interrupt or DMA mode.
1740 * This procedure performs following operations :
1741 * - Disable UART Interrupts (Tx)
1742 * - Disable the DMA transfer in the peripheral register (if enabled)
1743 * - Abort DMA transfer by calling HAL_DMA_Abort (in case of transfer in DMA mode)
1744 * - Set handle State to READY
1745 * @note This procedure is executed in blocking mode : when exiting function, Abort is considered as completed.
1746 * @retval HAL status
1747 */
HAL_UART_AbortTransmit(UART_HandleTypeDef * huart)1748 HAL_StatusTypeDef HAL_UART_AbortTransmit(UART_HandleTypeDef *huart)
1749 {
1750 /* Disable TCIE, TXEIE and TXFTIE interrupts */
1751 ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TCIE | USART_CR1_TXEIE_TXFNFIE));
1752 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_TXFTIE);
1753
1754 /* Abort the UART DMA Tx channel if enabled */
1755 if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
1756 {
1757 /* Disable the UART DMA Tx request if enabled */
1758 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
1759
1760 /* Abort the UART DMA Tx channel : use blocking DMA Abort API (no callback) */
1761 if (huart->hdmatx != NULL)
1762 {
1763 /* Set the UART DMA Abort callback to Null.
1764 No call back execution at end of DMA abort procedure */
1765 huart->hdmatx->XferAbortCallback = NULL;
1766
1767 if (HAL_DMA_Abort(huart->hdmatx) != HAL_OK)
1768 {
1769 if (HAL_DMA_GetError(huart->hdmatx) == HAL_DMA_ERROR_TIMEOUT)
1770 {
1771 /* Set error code to DMA */
1772 huart->ErrorCode = HAL_UART_ERROR_DMA;
1773
1774 return HAL_TIMEOUT;
1775 }
1776 }
1777 }
1778 }
1779
1780 /* Reset Tx transfer counter */
1781 huart->TxXferCount = 0U;
1782
1783 /* Flush the whole TX FIFO (if needed) */
1784 if (huart->FifoMode == UART_FIFOMODE_ENABLE)
1785 {
1786 __HAL_UART_SEND_REQ(huart, UART_TXDATA_FLUSH_REQUEST);
1787 }
1788
1789 /* Restore huart->gState to Ready */
1790 huart->gState = HAL_UART_STATE_READY;
1791
1792 return HAL_OK;
1793 }
1794
1795 /**
1796 * @brief Abort ongoing Receive transfer (blocking mode).
1797 * @param huart UART handle.
1798 * @note This procedure could be used for aborting any ongoing Rx transfer started in Interrupt or DMA mode.
1799 * This procedure performs following operations :
1800 * - Disable UART Interrupts (Rx)
1801 * - Disable the DMA transfer in the peripheral register (if enabled)
1802 * - Abort DMA transfer by calling HAL_DMA_Abort (in case of transfer in DMA mode)
1803 * - Set handle State to READY
1804 * @note This procedure is executed in blocking mode : when exiting function, Abort is considered as completed.
1805 * @retval HAL status
1806 */
HAL_UART_AbortReceive(UART_HandleTypeDef * huart)1807 HAL_StatusTypeDef HAL_UART_AbortReceive(UART_HandleTypeDef *huart)
1808 {
1809 /* Disable PEIE, EIE, RXNEIE and RXFTIE interrupts */
1810 ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_PEIE | USART_CR1_RXNEIE_RXFNEIE));
1811 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE | USART_CR3_RXFTIE);
1812
1813 /* If Reception till IDLE event was ongoing, disable IDLEIE interrupt */
1814 if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
1815 {
1816 ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_IDLEIE));
1817 }
1818
1819 /* Abort the UART DMA Rx channel if enabled */
1820 if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
1821 {
1822 /* Disable the UART DMA Rx request if enabled */
1823 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
1824
1825 /* Abort the UART DMA Rx channel : use blocking DMA Abort API (no callback) */
1826 if (huart->hdmarx != NULL)
1827 {
1828 /* Set the UART DMA Abort callback to Null.
1829 No call back execution at end of DMA abort procedure */
1830 huart->hdmarx->XferAbortCallback = NULL;
1831
1832 if (HAL_DMA_Abort(huart->hdmarx) != HAL_OK)
1833 {
1834 if (HAL_DMA_GetError(huart->hdmarx) == HAL_DMA_ERROR_TIMEOUT)
1835 {
1836 /* Set error code to DMA */
1837 huart->ErrorCode = HAL_UART_ERROR_DMA;
1838
1839 return HAL_TIMEOUT;
1840 }
1841 }
1842 }
1843 }
1844
1845 /* Reset Rx transfer counter */
1846 huart->RxXferCount = 0U;
1847
1848 /* Clear the Error flags in the ICR register */
1849 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
1850
1851 /* Discard the received data */
1852 __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
1853
1854 /* Restore huart->RxState to Ready */
1855 huart->RxState = HAL_UART_STATE_READY;
1856 huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
1857
1858 return HAL_OK;
1859 }
1860
1861 /**
1862 * @brief Abort ongoing transfers (Interrupt mode).
1863 * @param huart UART handle.
1864 * @note This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode.
1865 * This procedure performs following operations :
1866 * - Disable UART Interrupts (Tx and Rx)
1867 * - Disable the DMA transfer in the peripheral register (if enabled)
1868 * - Abort DMA transfer by calling HAL_DMA_Abort_IT (in case of transfer in DMA mode)
1869 * - Set handle State to READY
1870 * - At abort completion, call user abort complete callback
1871 * @note This procedure is executed in Interrupt mode, meaning that abort procedure could be
1872 * considered as completed only when user abort complete callback is executed (not when exiting function).
1873 * @retval HAL status
1874 */
HAL_UART_Abort_IT(UART_HandleTypeDef * huart)1875 HAL_StatusTypeDef HAL_UART_Abort_IT(UART_HandleTypeDef *huart)
1876 {
1877 uint32_t abortcplt = 1U;
1878
1879 /* Disable interrupts */
1880 ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_PEIE | USART_CR1_TCIE | USART_CR1_RXNEIE_RXFNEIE |
1881 USART_CR1_TXEIE_TXFNFIE));
1882 ATOMIC_CLEAR_BIT(huart->Instance->CR3, (USART_CR3_EIE | USART_CR3_RXFTIE | USART_CR3_TXFTIE));
1883
1884 /* If Reception till IDLE event was ongoing, disable IDLEIE interrupt */
1885 if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
1886 {
1887 ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_IDLEIE));
1888 }
1889
1890 /* If DMA Tx and/or DMA Rx Handles are associated to UART Handle, DMA Abort complete callbacks should be initialised
1891 before any call to DMA Abort functions */
1892 /* DMA Tx Handle is valid */
1893 if (huart->hdmatx != NULL)
1894 {
1895 /* Set DMA Abort Complete callback if UART DMA Tx request if enabled.
1896 Otherwise, set it to NULL */
1897 if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
1898 {
1899 huart->hdmatx->XferAbortCallback = UART_DMATxAbortCallback;
1900 }
1901 else
1902 {
1903 huart->hdmatx->XferAbortCallback = NULL;
1904 }
1905 }
1906 /* DMA Rx Handle is valid */
1907 if (huart->hdmarx != NULL)
1908 {
1909 /* Set DMA Abort Complete callback if UART DMA Rx request if enabled.
1910 Otherwise, set it to NULL */
1911 if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
1912 {
1913 huart->hdmarx->XferAbortCallback = UART_DMARxAbortCallback;
1914 }
1915 else
1916 {
1917 huart->hdmarx->XferAbortCallback = NULL;
1918 }
1919 }
1920
1921 /* Abort the UART DMA Tx channel if enabled */
1922 if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
1923 {
1924 /* Disable DMA Tx at UART level */
1925 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
1926
1927 /* Abort the UART DMA Tx channel : use non blocking DMA Abort API (callback) */
1928 if (huart->hdmatx != NULL)
1929 {
1930 /* UART Tx DMA Abort callback has already been initialised :
1931 will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
1932
1933 /* Abort DMA TX */
1934 if (HAL_DMA_Abort_IT(huart->hdmatx) != HAL_OK)
1935 {
1936 huart->hdmatx->XferAbortCallback = NULL;
1937 }
1938 else
1939 {
1940 abortcplt = 0U;
1941 }
1942 }
1943 }
1944
1945 /* Abort the UART DMA Rx channel if enabled */
1946 if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
1947 {
1948 /* Disable the UART DMA Rx request if enabled */
1949 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
1950
1951 /* Abort the UART DMA Rx channel : use non blocking DMA Abort API (callback) */
1952 if (huart->hdmarx != NULL)
1953 {
1954 /* UART Rx DMA Abort callback has already been initialised :
1955 will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
1956
1957 /* Abort DMA RX */
1958 if (HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK)
1959 {
1960 huart->hdmarx->XferAbortCallback = NULL;
1961 abortcplt = 1U;
1962 }
1963 else
1964 {
1965 abortcplt = 0U;
1966 }
1967 }
1968 }
1969
1970 /* if no DMA abort complete callback execution is required => call user Abort Complete callback */
1971 if (abortcplt == 1U)
1972 {
1973 /* Reset Tx and Rx transfer counters */
1974 huart->TxXferCount = 0U;
1975 huart->RxXferCount = 0U;
1976
1977 /* Clear ISR function pointers */
1978 huart->RxISR = NULL;
1979 huart->TxISR = NULL;
1980
1981 /* Reset errorCode */
1982 huart->ErrorCode = HAL_UART_ERROR_NONE;
1983
1984 /* Clear the Error flags in the ICR register */
1985 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
1986
1987 /* Flush the whole TX FIFO (if needed) */
1988 if (huart->FifoMode == UART_FIFOMODE_ENABLE)
1989 {
1990 __HAL_UART_SEND_REQ(huart, UART_TXDATA_FLUSH_REQUEST);
1991 }
1992
1993 /* Discard the received data */
1994 __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
1995
1996 /* Restore huart->gState and huart->RxState to Ready */
1997 huart->gState = HAL_UART_STATE_READY;
1998 huart->RxState = HAL_UART_STATE_READY;
1999 huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
2000
2001 /* As no DMA to be aborted, call directly user Abort complete callback */
2002 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
2003 /* Call registered Abort complete callback */
2004 huart->AbortCpltCallback(huart);
2005 #else
2006 /* Call legacy weak Abort complete callback */
2007 HAL_UART_AbortCpltCallback(huart);
2008 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
2009 }
2010
2011 return HAL_OK;
2012 }
2013
2014 /**
2015 * @brief Abort ongoing Transmit transfer (Interrupt mode).
2016 * @param huart UART handle.
2017 * @note This procedure could be used for aborting any ongoing Tx transfer started in Interrupt or DMA mode.
2018 * This procedure performs following operations :
2019 * - Disable UART Interrupts (Tx)
2020 * - Disable the DMA transfer in the peripheral register (if enabled)
2021 * - Abort DMA transfer by calling HAL_DMA_Abort_IT (in case of transfer in DMA mode)
2022 * - Set handle State to READY
2023 * - At abort completion, call user abort complete callback
2024 * @note This procedure is executed in Interrupt mode, meaning that abort procedure could be
2025 * considered as completed only when user abort complete callback is executed (not when exiting function).
2026 * @retval HAL status
2027 */
HAL_UART_AbortTransmit_IT(UART_HandleTypeDef * huart)2028 HAL_StatusTypeDef HAL_UART_AbortTransmit_IT(UART_HandleTypeDef *huart)
2029 {
2030 /* Disable interrupts */
2031 ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TCIE | USART_CR1_TXEIE_TXFNFIE));
2032 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_TXFTIE);
2033
2034 /* Abort the UART DMA Tx channel if enabled */
2035 if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
2036 {
2037 /* Disable the UART DMA Tx request if enabled */
2038 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
2039
2040 /* Abort the UART DMA Tx channel : use non blocking DMA Abort API (callback) */
2041 if (huart->hdmatx != NULL)
2042 {
2043 /* Set the UART DMA Abort callback :
2044 will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
2045 huart->hdmatx->XferAbortCallback = UART_DMATxOnlyAbortCallback;
2046
2047 /* Abort DMA TX */
2048 if (HAL_DMA_Abort_IT(huart->hdmatx) != HAL_OK)
2049 {
2050 /* Call Directly huart->hdmatx->XferAbortCallback function in case of error */
2051 huart->hdmatx->XferAbortCallback(huart->hdmatx);
2052 }
2053 }
2054 else
2055 {
2056 /* Reset Tx transfer counter */
2057 huart->TxXferCount = 0U;
2058
2059 /* Clear TxISR function pointers */
2060 huart->TxISR = NULL;
2061
2062 /* Restore huart->gState to Ready */
2063 huart->gState = HAL_UART_STATE_READY;
2064
2065 /* As no DMA to be aborted, call directly user Abort complete callback */
2066 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
2067 /* Call registered Abort Transmit Complete Callback */
2068 huart->AbortTransmitCpltCallback(huart);
2069 #else
2070 /* Call legacy weak Abort Transmit Complete Callback */
2071 HAL_UART_AbortTransmitCpltCallback(huart);
2072 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
2073 }
2074 }
2075 else
2076 {
2077 /* Reset Tx transfer counter */
2078 huart->TxXferCount = 0U;
2079
2080 /* Clear TxISR function pointers */
2081 huart->TxISR = NULL;
2082
2083 /* Flush the whole TX FIFO (if needed) */
2084 if (huart->FifoMode == UART_FIFOMODE_ENABLE)
2085 {
2086 __HAL_UART_SEND_REQ(huart, UART_TXDATA_FLUSH_REQUEST);
2087 }
2088
2089 /* Restore huart->gState to Ready */
2090 huart->gState = HAL_UART_STATE_READY;
2091
2092 /* As no DMA to be aborted, call directly user Abort complete callback */
2093 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
2094 /* Call registered Abort Transmit Complete Callback */
2095 huart->AbortTransmitCpltCallback(huart);
2096 #else
2097 /* Call legacy weak Abort Transmit Complete Callback */
2098 HAL_UART_AbortTransmitCpltCallback(huart);
2099 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
2100 }
2101
2102 return HAL_OK;
2103 }
2104
2105 /**
2106 * @brief Abort ongoing Receive transfer (Interrupt mode).
2107 * @param huart UART handle.
2108 * @note This procedure could be used for aborting any ongoing Rx transfer started in Interrupt or DMA mode.
2109 * This procedure performs following operations :
2110 * - Disable UART Interrupts (Rx)
2111 * - Disable the DMA transfer in the peripheral register (if enabled)
2112 * - Abort DMA transfer by calling HAL_DMA_Abort_IT (in case of transfer in DMA mode)
2113 * - Set handle State to READY
2114 * - At abort completion, call user abort complete callback
2115 * @note This procedure is executed in Interrupt mode, meaning that abort procedure could be
2116 * considered as completed only when user abort complete callback is executed (not when exiting function).
2117 * @retval HAL status
2118 */
HAL_UART_AbortReceive_IT(UART_HandleTypeDef * huart)2119 HAL_StatusTypeDef HAL_UART_AbortReceive_IT(UART_HandleTypeDef *huart)
2120 {
2121 /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
2122 ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_PEIE | USART_CR1_RXNEIE_RXFNEIE));
2123 ATOMIC_CLEAR_BIT(huart->Instance->CR3, (USART_CR3_EIE | USART_CR3_RXFTIE));
2124
2125 /* If Reception till IDLE event was ongoing, disable IDLEIE interrupt */
2126 if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
2127 {
2128 ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_IDLEIE));
2129 }
2130
2131 /* Abort the UART DMA Rx channel if enabled */
2132 if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
2133 {
2134 /* Disable the UART DMA Rx request if enabled */
2135 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
2136
2137 /* Abort the UART DMA Rx channel : use non blocking DMA Abort API (callback) */
2138 if (huart->hdmarx != NULL)
2139 {
2140 /* Set the UART DMA Abort callback :
2141 will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
2142 huart->hdmarx->XferAbortCallback = UART_DMARxOnlyAbortCallback;
2143
2144 /* Abort DMA RX */
2145 if (HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK)
2146 {
2147 /* Call Directly huart->hdmarx->XferAbortCallback function in case of error */
2148 huart->hdmarx->XferAbortCallback(huart->hdmarx);
2149 }
2150 }
2151 else
2152 {
2153 /* Reset Rx transfer counter */
2154 huart->RxXferCount = 0U;
2155
2156 /* Clear RxISR function pointer */
2157 huart->pRxBuffPtr = NULL;
2158
2159 /* Clear the Error flags in the ICR register */
2160 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
2161
2162 /* Discard the received data */
2163 __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
2164
2165 /* Restore huart->RxState to Ready */
2166 huart->RxState = HAL_UART_STATE_READY;
2167 huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
2168
2169 /* As no DMA to be aborted, call directly user Abort complete callback */
2170 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
2171 /* Call registered Abort Receive Complete Callback */
2172 huart->AbortReceiveCpltCallback(huart);
2173 #else
2174 /* Call legacy weak Abort Receive Complete Callback */
2175 HAL_UART_AbortReceiveCpltCallback(huart);
2176 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
2177 }
2178 }
2179 else
2180 {
2181 /* Reset Rx transfer counter */
2182 huart->RxXferCount = 0U;
2183
2184 /* Clear RxISR function pointer */
2185 huart->pRxBuffPtr = NULL;
2186
2187 /* Clear the Error flags in the ICR register */
2188 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
2189
2190 /* Restore huart->RxState to Ready */
2191 huart->RxState = HAL_UART_STATE_READY;
2192 huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
2193
2194 /* As no DMA to be aborted, call directly user Abort complete callback */
2195 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
2196 /* Call registered Abort Receive Complete Callback */
2197 huart->AbortReceiveCpltCallback(huart);
2198 #else
2199 /* Call legacy weak Abort Receive Complete Callback */
2200 HAL_UART_AbortReceiveCpltCallback(huart);
2201 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
2202 }
2203
2204 return HAL_OK;
2205 }
2206
2207 /**
2208 * @brief Handle UART interrupt request.
2209 * @param huart UART handle.
2210 * @retval None
2211 */
HAL_UART_IRQHandler(UART_HandleTypeDef * huart)2212 void HAL_UART_IRQHandler(UART_HandleTypeDef *huart)
2213 {
2214 uint32_t isrflags = READ_REG(huart->Instance->ISR);
2215 uint32_t cr1its = READ_REG(huart->Instance->CR1);
2216 uint32_t cr3its = READ_REG(huart->Instance->CR3);
2217
2218 uint32_t errorflags;
2219 uint32_t errorcode;
2220
2221 /* If no error occurs */
2222 errorflags = (isrflags & (uint32_t)(USART_ISR_PE | USART_ISR_FE | USART_ISR_ORE | USART_ISR_NE | USART_ISR_RTOF));
2223 if (errorflags == 0U)
2224 {
2225 /* UART in mode Receiver ---------------------------------------------------*/
2226 if (((isrflags & USART_ISR_RXNE_RXFNE) != 0U)
2227 && (((cr1its & USART_CR1_RXNEIE_RXFNEIE) != 0U)
2228 || ((cr3its & USART_CR3_RXFTIE) != 0U)))
2229 {
2230 if (huart->RxISR != NULL)
2231 {
2232 huart->RxISR(huart);
2233 }
2234 return;
2235 }
2236 }
2237
2238 /* If some errors occur */
2239 if ((errorflags != 0U)
2240 && ((((cr3its & (USART_CR3_RXFTIE | USART_CR3_EIE)) != 0U)
2241 || ((cr1its & (USART_CR1_RXNEIE_RXFNEIE | USART_CR1_PEIE | USART_CR1_RTOIE)) != 0U))))
2242 {
2243 /* UART parity error interrupt occurred -------------------------------------*/
2244 if (((isrflags & USART_ISR_PE) != 0U) && ((cr1its & USART_CR1_PEIE) != 0U))
2245 {
2246 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_PEF);
2247
2248 huart->ErrorCode |= HAL_UART_ERROR_PE;
2249 }
2250
2251 /* UART frame error interrupt occurred --------------------------------------*/
2252 if (((isrflags & USART_ISR_FE) != 0U) && ((cr3its & USART_CR3_EIE) != 0U))
2253 {
2254 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_FEF);
2255
2256 huart->ErrorCode |= HAL_UART_ERROR_FE;
2257 }
2258
2259 /* UART noise error interrupt occurred --------------------------------------*/
2260 if (((isrflags & USART_ISR_NE) != 0U) && ((cr3its & USART_CR3_EIE) != 0U))
2261 {
2262 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_NEF);
2263
2264 huart->ErrorCode |= HAL_UART_ERROR_NE;
2265 }
2266
2267 /* UART Over-Run interrupt occurred -----------------------------------------*/
2268 if (((isrflags & USART_ISR_ORE) != 0U)
2269 && (((cr1its & USART_CR1_RXNEIE_RXFNEIE) != 0U) ||
2270 ((cr3its & (USART_CR3_RXFTIE | USART_CR3_EIE)) != 0U)))
2271 {
2272 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF);
2273
2274 huart->ErrorCode |= HAL_UART_ERROR_ORE;
2275 }
2276
2277 /* UART Receiver Timeout interrupt occurred ---------------------------------*/
2278 if (((isrflags & USART_ISR_RTOF) != 0U) && ((cr1its & USART_CR1_RTOIE) != 0U))
2279 {
2280 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_RTOF);
2281
2282 huart->ErrorCode |= HAL_UART_ERROR_RTO;
2283 }
2284
2285 /* Call UART Error Call back function if need be ----------------------------*/
2286 if (huart->ErrorCode != HAL_UART_ERROR_NONE)
2287 {
2288 /* UART in mode Receiver --------------------------------------------------*/
2289 if (((isrflags & USART_ISR_RXNE_RXFNE) != 0U)
2290 && (((cr1its & USART_CR1_RXNEIE_RXFNEIE) != 0U)
2291 || ((cr3its & USART_CR3_RXFTIE) != 0U)))
2292 {
2293 if (huart->RxISR != NULL)
2294 {
2295 huart->RxISR(huart);
2296 }
2297 }
2298
2299 /* If Error is to be considered as blocking :
2300 - Receiver Timeout error in Reception
2301 - Overrun error in Reception
2302 - any error occurs in DMA mode reception
2303 */
2304 errorcode = huart->ErrorCode;
2305 if ((HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)) ||
2306 ((errorcode & (HAL_UART_ERROR_RTO | HAL_UART_ERROR_ORE)) != 0U))
2307 {
2308 /* Blocking error : transfer is aborted
2309 Set the UART state ready to be able to start again the process,
2310 Disable Rx Interrupts, and disable Rx DMA request, if ongoing */
2311 UART_EndRxTransfer(huart);
2312
2313 /* Abort the UART DMA Rx channel if enabled */
2314 if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
2315 {
2316 /* Disable the UART DMA Rx request if enabled */
2317 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
2318
2319 /* Abort the UART DMA Rx channel */
2320 if (huart->hdmarx != NULL)
2321 {
2322 /* Set the UART DMA Abort callback :
2323 will lead to call HAL_UART_ErrorCallback() at end of DMA abort procedure */
2324 huart->hdmarx->XferAbortCallback = UART_DMAAbortOnError;
2325
2326 /* Abort DMA RX */
2327 if (HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK)
2328 {
2329 /* Call Directly huart->hdmarx->XferAbortCallback function in case of error */
2330 huart->hdmarx->XferAbortCallback(huart->hdmarx);
2331 }
2332 }
2333 else
2334 {
2335 /* Call user error callback */
2336 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
2337 /*Call registered error callback*/
2338 huart->ErrorCallback(huart);
2339 #else
2340 /*Call legacy weak error callback*/
2341 HAL_UART_ErrorCallback(huart);
2342 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
2343
2344 }
2345 }
2346 else
2347 {
2348 /* Call user error callback */
2349 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
2350 /*Call registered error callback*/
2351 huart->ErrorCallback(huart);
2352 #else
2353 /*Call legacy weak error callback*/
2354 HAL_UART_ErrorCallback(huart);
2355 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
2356 }
2357 }
2358 else
2359 {
2360 /* Non Blocking error : transfer could go on.
2361 Error is notified to user through user error callback */
2362 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
2363 /*Call registered error callback*/
2364 huart->ErrorCallback(huart);
2365 #else
2366 /*Call legacy weak error callback*/
2367 HAL_UART_ErrorCallback(huart);
2368 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
2369 huart->ErrorCode = HAL_UART_ERROR_NONE;
2370 }
2371 }
2372 return;
2373
2374 } /* End if some error occurs */
2375
2376 /* Check current reception Mode :
2377 If Reception till IDLE event has been selected : */
2378 if ((huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
2379 && ((isrflags & USART_ISR_IDLE) != 0U)
2380 && ((cr1its & USART_ISR_IDLE) != 0U))
2381 {
2382 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_IDLEF);
2383
2384 /* Check if DMA mode is enabled in UART */
2385 if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
2386 {
2387 /* DMA mode enabled */
2388 /* Check received length : If all expected data are received, do nothing,
2389 (DMA cplt callback will be called).
2390 Otherwise, if at least one data has already been received, IDLE event is to be notified to user */
2391 uint16_t nb_remaining_rx_data = (uint16_t) __HAL_DMA_GET_COUNTER(huart->hdmarx);
2392 if ((nb_remaining_rx_data > 0U)
2393 && (nb_remaining_rx_data < huart->RxXferSize))
2394 {
2395 /* Reception is not complete */
2396 huart->RxXferCount = nb_remaining_rx_data;
2397
2398 /* In Normal mode, end DMA xfer and HAL UART Rx process*/
2399 if (HAL_IS_BIT_CLR(huart->hdmarx->Instance->CCR, DMA_CCR_CIRC))
2400 {
2401 /* Disable PE and ERR (Frame error, noise error, overrun error) interrupts */
2402 ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE);
2403 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
2404
2405 /* Disable the DMA transfer for the receiver request by resetting the DMAR bit
2406 in the UART CR3 register */
2407 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
2408
2409 /* At end of Rx process, restore huart->RxState to Ready */
2410 huart->RxState = HAL_UART_STATE_READY;
2411 huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
2412
2413 ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_IDLEIE);
2414
2415 /* Last bytes received, so no need as the abort is immediate */
2416 (void)HAL_DMA_Abort(huart->hdmarx);
2417 }
2418
2419 /* Initialize type of RxEvent that correspond to RxEvent callback execution;
2420 In this case, Rx Event type is Idle Event */
2421 huart->RxEventType = HAL_UART_RXEVENT_IDLE;
2422
2423 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
2424 /*Call registered Rx Event callback*/
2425 huart->RxEventCallback(huart, (huart->RxXferSize - huart->RxXferCount));
2426 #else
2427 /*Call legacy weak Rx Event callback*/
2428 HAL_UARTEx_RxEventCallback(huart, (huart->RxXferSize - huart->RxXferCount));
2429 #endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
2430 }
2431 return;
2432 }
2433 else
2434 {
2435 /* DMA mode not enabled */
2436 /* Check received length : If all expected data are received, do nothing.
2437 Otherwise, if at least one data has already been received, IDLE event is to be notified to user */
2438 uint16_t nb_rx_data = huart->RxXferSize - huart->RxXferCount;
2439 if ((huart->RxXferCount > 0U)
2440 && (nb_rx_data > 0U))
2441 {
2442 /* Disable the UART Parity Error Interrupt and RXNE interrupts */
2443 ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE_RXFNEIE | USART_CR1_PEIE));
2444
2445 /* Disable the UART Error Interrupt:(Frame error, noise error, overrun error) and RX FIFO Threshold interrupt */
2446 ATOMIC_CLEAR_BIT(huart->Instance->CR3, (USART_CR3_EIE | USART_CR3_RXFTIE));
2447
2448 /* Rx process is completed, restore huart->RxState to Ready */
2449 huart->RxState = HAL_UART_STATE_READY;
2450 huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
2451
2452 /* Clear RxISR function pointer */
2453 huart->RxISR = NULL;
2454
2455 ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_IDLEIE);
2456
2457 /* Initialize type of RxEvent that correspond to RxEvent callback execution;
2458 In this case, Rx Event type is Idle Event */
2459 huart->RxEventType = HAL_UART_RXEVENT_IDLE;
2460
2461 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
2462 /*Call registered Rx complete callback*/
2463 huart->RxEventCallback(huart, nb_rx_data);
2464 #else
2465 /*Call legacy weak Rx Event callback*/
2466 HAL_UARTEx_RxEventCallback(huart, nb_rx_data);
2467 #endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
2468 }
2469 return;
2470 }
2471 }
2472
2473 /* UART wakeup from Stop mode interrupt occurred ---------------------------*/
2474 if (((isrflags & USART_ISR_WUF) != 0U) && ((cr3its & USART_CR3_WUFIE) != 0U))
2475 {
2476 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_WUF);
2477
2478 /* UART Rx state is not reset as a reception process might be ongoing.
2479 If UART handle state fields need to be reset to READY, this could be done in Wakeup callback */
2480
2481 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
2482 /* Call registered Wakeup Callback */
2483 huart->WakeupCallback(huart);
2484 #else
2485 /* Call legacy weak Wakeup Callback */
2486 HAL_UARTEx_WakeupCallback(huart);
2487 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
2488 return;
2489 }
2490
2491 /* UART in mode Transmitter ------------------------------------------------*/
2492 if (((isrflags & USART_ISR_TXE_TXFNF) != 0U)
2493 && (((cr1its & USART_CR1_TXEIE_TXFNFIE) != 0U)
2494 || ((cr3its & USART_CR3_TXFTIE) != 0U)))
2495 {
2496 if (huart->TxISR != NULL)
2497 {
2498 huart->TxISR(huart);
2499 }
2500 return;
2501 }
2502
2503 /* UART in mode Transmitter (transmission end) -----------------------------*/
2504 if (((isrflags & USART_ISR_TC) != 0U) && ((cr1its & USART_CR1_TCIE) != 0U))
2505 {
2506 UART_EndTransmit_IT(huart);
2507 return;
2508 }
2509
2510 /* UART TX Fifo Empty occurred ----------------------------------------------*/
2511 if (((isrflags & USART_ISR_TXFE) != 0U) && ((cr1its & USART_CR1_TXFEIE) != 0U))
2512 {
2513 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
2514 /* Call registered Tx Fifo Empty Callback */
2515 huart->TxFifoEmptyCallback(huart);
2516 #else
2517 /* Call legacy weak Tx Fifo Empty Callback */
2518 HAL_UARTEx_TxFifoEmptyCallback(huart);
2519 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
2520 return;
2521 }
2522
2523 /* UART RX Fifo Full occurred ----------------------------------------------*/
2524 if (((isrflags & USART_ISR_RXFF) != 0U) && ((cr1its & USART_CR1_RXFFIE) != 0U))
2525 {
2526 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
2527 /* Call registered Rx Fifo Full Callback */
2528 huart->RxFifoFullCallback(huart);
2529 #else
2530 /* Call legacy weak Rx Fifo Full Callback */
2531 HAL_UARTEx_RxFifoFullCallback(huart);
2532 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
2533 return;
2534 }
2535 }
2536
2537 /**
2538 * @brief Tx Transfer completed callback.
2539 * @param huart UART handle.
2540 * @retval None
2541 */
HAL_UART_TxCpltCallback(UART_HandleTypeDef * huart)2542 __weak void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart)
2543 {
2544 /* Prevent unused argument(s) compilation warning */
2545 UNUSED(huart);
2546
2547 /* NOTE : This function should not be modified, when the callback is needed,
2548 the HAL_UART_TxCpltCallback can be implemented in the user file.
2549 */
2550 }
2551
2552 /**
2553 * @brief Tx Half Transfer completed callback.
2554 * @param huart UART handle.
2555 * @retval None
2556 */
HAL_UART_TxHalfCpltCallback(UART_HandleTypeDef * huart)2557 __weak void HAL_UART_TxHalfCpltCallback(UART_HandleTypeDef *huart)
2558 {
2559 /* Prevent unused argument(s) compilation warning */
2560 UNUSED(huart);
2561
2562 /* NOTE: This function should not be modified, when the callback is needed,
2563 the HAL_UART_TxHalfCpltCallback can be implemented in the user file.
2564 */
2565 }
2566
2567 /**
2568 * @brief Rx Transfer completed callback.
2569 * @param huart UART handle.
2570 * @retval None
2571 */
HAL_UART_RxCpltCallback(UART_HandleTypeDef * huart)2572 __weak void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
2573 {
2574 /* Prevent unused argument(s) compilation warning */
2575 UNUSED(huart);
2576
2577 /* NOTE : This function should not be modified, when the callback is needed,
2578 the HAL_UART_RxCpltCallback can be implemented in the user file.
2579 */
2580 }
2581
2582 /**
2583 * @brief Rx Half Transfer completed callback.
2584 * @param huart UART handle.
2585 * @retval None
2586 */
HAL_UART_RxHalfCpltCallback(UART_HandleTypeDef * huart)2587 __weak void HAL_UART_RxHalfCpltCallback(UART_HandleTypeDef *huart)
2588 {
2589 /* Prevent unused argument(s) compilation warning */
2590 UNUSED(huart);
2591
2592 /* NOTE: This function should not be modified, when the callback is needed,
2593 the HAL_UART_RxHalfCpltCallback can be implemented in the user file.
2594 */
2595 }
2596
2597 /**
2598 * @brief UART error callback.
2599 * @param huart UART handle.
2600 * @retval None
2601 */
HAL_UART_ErrorCallback(UART_HandleTypeDef * huart)2602 __weak void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart)
2603 {
2604 /* Prevent unused argument(s) compilation warning */
2605 UNUSED(huart);
2606
2607 /* NOTE : This function should not be modified, when the callback is needed,
2608 the HAL_UART_ErrorCallback can be implemented in the user file.
2609 */
2610 }
2611
2612 /**
2613 * @brief UART Abort Complete callback.
2614 * @param huart UART handle.
2615 * @retval None
2616 */
HAL_UART_AbortCpltCallback(UART_HandleTypeDef * huart)2617 __weak void HAL_UART_AbortCpltCallback(UART_HandleTypeDef *huart)
2618 {
2619 /* Prevent unused argument(s) compilation warning */
2620 UNUSED(huart);
2621
2622 /* NOTE : This function should not be modified, when the callback is needed,
2623 the HAL_UART_AbortCpltCallback can be implemented in the user file.
2624 */
2625 }
2626
2627 /**
2628 * @brief UART Abort Complete callback.
2629 * @param huart UART handle.
2630 * @retval None
2631 */
HAL_UART_AbortTransmitCpltCallback(UART_HandleTypeDef * huart)2632 __weak void HAL_UART_AbortTransmitCpltCallback(UART_HandleTypeDef *huart)
2633 {
2634 /* Prevent unused argument(s) compilation warning */
2635 UNUSED(huart);
2636
2637 /* NOTE : This function should not be modified, when the callback is needed,
2638 the HAL_UART_AbortTransmitCpltCallback can be implemented in the user file.
2639 */
2640 }
2641
2642 /**
2643 * @brief UART Abort Receive Complete callback.
2644 * @param huart UART handle.
2645 * @retval None
2646 */
HAL_UART_AbortReceiveCpltCallback(UART_HandleTypeDef * huart)2647 __weak void HAL_UART_AbortReceiveCpltCallback(UART_HandleTypeDef *huart)
2648 {
2649 /* Prevent unused argument(s) compilation warning */
2650 UNUSED(huart);
2651
2652 /* NOTE : This function should not be modified, when the callback is needed,
2653 the HAL_UART_AbortReceiveCpltCallback can be implemented in the user file.
2654 */
2655 }
2656
2657 /**
2658 * @brief Reception Event Callback (Rx event notification called after use of advanced reception service).
2659 * @param huart UART handle
2660 * @param Size Number of data available in application reception buffer (indicates a position in
2661 * reception buffer until which, data are available)
2662 * @retval None
2663 */
HAL_UARTEx_RxEventCallback(UART_HandleTypeDef * huart,uint16_t Size)2664 __weak void HAL_UARTEx_RxEventCallback(UART_HandleTypeDef *huart, uint16_t Size)
2665 {
2666 /* Prevent unused argument(s) compilation warning */
2667 UNUSED(huart);
2668 UNUSED(Size);
2669
2670 /* NOTE : This function should not be modified, when the callback is needed,
2671 the HAL_UARTEx_RxEventCallback can be implemented in the user file.
2672 */
2673 }
2674
2675 /**
2676 * @}
2677 */
2678
2679 /** @defgroup UART_Exported_Functions_Group3 Peripheral Control functions
2680 * @brief UART control functions
2681 *
2682 @verbatim
2683 ===============================================================================
2684 ##### Peripheral Control functions #####
2685 ===============================================================================
2686 [..]
2687 This subsection provides a set of functions allowing to control the UART.
2688 (+) HAL_UART_ReceiverTimeout_Config() API allows to configure the receiver timeout value on the fly
2689 (+) HAL_UART_EnableReceiverTimeout() API enables the receiver timeout feature
2690 (+) HAL_UART_DisableReceiverTimeout() API disables the receiver timeout feature
2691 (+) HAL_MultiProcessor_EnableMuteMode() API enables mute mode
2692 (+) HAL_MultiProcessor_DisableMuteMode() API disables mute mode
2693 (+) HAL_MultiProcessor_EnterMuteMode() API enters mute mode
2694 (+) UART_SetConfig() API configures the UART peripheral
2695 (+) UART_AdvFeatureConfig() API optionally configures the UART advanced features
2696 (+) UART_CheckIdleState() API ensures that TEACK and/or REACK are set after initialization
2697 (+) HAL_HalfDuplex_EnableTransmitter() API disables receiver and enables transmitter
2698 (+) HAL_HalfDuplex_EnableReceiver() API disables transmitter and enables receiver
2699 (+) HAL_LIN_SendBreak() API transmits the break characters
2700 @endverbatim
2701 * @{
2702 */
2703
2704 /**
2705 * @brief Update on the fly the receiver timeout value in RTOR register.
2706 * @param huart Pointer to a UART_HandleTypeDef structure that contains
2707 * the configuration information for the specified UART module.
2708 * @param TimeoutValue receiver timeout value in number of baud blocks. The timeout
2709 * value must be less or equal to 0x0FFFFFFFF.
2710 * @retval None
2711 */
HAL_UART_ReceiverTimeout_Config(UART_HandleTypeDef * huart,uint32_t TimeoutValue)2712 void HAL_UART_ReceiverTimeout_Config(UART_HandleTypeDef *huart, uint32_t TimeoutValue)
2713 {
2714 if (!(IS_LPUART_INSTANCE(huart->Instance)))
2715 {
2716 assert_param(IS_UART_RECEIVER_TIMEOUT_VALUE(TimeoutValue));
2717 MODIFY_REG(huart->Instance->RTOR, USART_RTOR_RTO, TimeoutValue);
2718 }
2719 }
2720
2721 /**
2722 * @brief Enable the UART receiver timeout feature.
2723 * @param huart Pointer to a UART_HandleTypeDef structure that contains
2724 * the configuration information for the specified UART module.
2725 * @retval HAL status
2726 */
HAL_UART_EnableReceiverTimeout(UART_HandleTypeDef * huart)2727 HAL_StatusTypeDef HAL_UART_EnableReceiverTimeout(UART_HandleTypeDef *huart)
2728 {
2729 if (!(IS_LPUART_INSTANCE(huart->Instance)))
2730 {
2731 if (huart->gState == HAL_UART_STATE_READY)
2732 {
2733 /* Process Locked */
2734 __HAL_LOCK(huart);
2735
2736 huart->gState = HAL_UART_STATE_BUSY;
2737
2738 /* Set the USART RTOEN bit */
2739 SET_BIT(huart->Instance->CR2, USART_CR2_RTOEN);
2740
2741 huart->gState = HAL_UART_STATE_READY;
2742
2743 /* Process Unlocked */
2744 __HAL_UNLOCK(huart);
2745
2746 return HAL_OK;
2747 }
2748 else
2749 {
2750 return HAL_BUSY;
2751 }
2752 }
2753 else
2754 {
2755 return HAL_ERROR;
2756 }
2757 }
2758
2759 /**
2760 * @brief Disable the UART receiver timeout feature.
2761 * @param huart Pointer to a UART_HandleTypeDef structure that contains
2762 * the configuration information for the specified UART module.
2763 * @retval HAL status
2764 */
HAL_UART_DisableReceiverTimeout(UART_HandleTypeDef * huart)2765 HAL_StatusTypeDef HAL_UART_DisableReceiverTimeout(UART_HandleTypeDef *huart)
2766 {
2767 if (!(IS_LPUART_INSTANCE(huart->Instance)))
2768 {
2769 if (huart->gState == HAL_UART_STATE_READY)
2770 {
2771 /* Process Locked */
2772 __HAL_LOCK(huart);
2773
2774 huart->gState = HAL_UART_STATE_BUSY;
2775
2776 /* Clear the USART RTOEN bit */
2777 CLEAR_BIT(huart->Instance->CR2, USART_CR2_RTOEN);
2778
2779 huart->gState = HAL_UART_STATE_READY;
2780
2781 /* Process Unlocked */
2782 __HAL_UNLOCK(huart);
2783
2784 return HAL_OK;
2785 }
2786 else
2787 {
2788 return HAL_BUSY;
2789 }
2790 }
2791 else
2792 {
2793 return HAL_ERROR;
2794 }
2795 }
2796
2797 /**
2798 * @brief Enable UART in mute mode (does not mean UART enters mute mode;
2799 * to enter mute mode, HAL_MultiProcessor_EnterMuteMode() API must be called).
2800 * @param huart UART handle.
2801 * @retval HAL status
2802 */
HAL_MultiProcessor_EnableMuteMode(UART_HandleTypeDef * huart)2803 HAL_StatusTypeDef HAL_MultiProcessor_EnableMuteMode(UART_HandleTypeDef *huart)
2804 {
2805 __HAL_LOCK(huart);
2806
2807 huart->gState = HAL_UART_STATE_BUSY;
2808
2809 /* Enable USART mute mode by setting the MME bit in the CR1 register */
2810 ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_MME);
2811
2812 huart->gState = HAL_UART_STATE_READY;
2813
2814 return (UART_CheckIdleState(huart));
2815 }
2816
2817 /**
2818 * @brief Disable UART mute mode (does not mean the UART actually exits mute mode
2819 * as it may not have been in mute mode at this very moment).
2820 * @param huart UART handle.
2821 * @retval HAL status
2822 */
HAL_MultiProcessor_DisableMuteMode(UART_HandleTypeDef * huart)2823 HAL_StatusTypeDef HAL_MultiProcessor_DisableMuteMode(UART_HandleTypeDef *huart)
2824 {
2825 __HAL_LOCK(huart);
2826
2827 huart->gState = HAL_UART_STATE_BUSY;
2828
2829 /* Disable USART mute mode by clearing the MME bit in the CR1 register */
2830 ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_MME);
2831
2832 huart->gState = HAL_UART_STATE_READY;
2833
2834 return (UART_CheckIdleState(huart));
2835 }
2836
2837 /**
2838 * @brief Enter UART mute mode (means UART actually enters mute mode).
2839 * @note To exit from mute mode, HAL_MultiProcessor_DisableMuteMode() API must be called.
2840 * @param huart UART handle.
2841 * @retval None
2842 */
HAL_MultiProcessor_EnterMuteMode(UART_HandleTypeDef * huart)2843 void HAL_MultiProcessor_EnterMuteMode(UART_HandleTypeDef *huart)
2844 {
2845 __HAL_UART_SEND_REQ(huart, UART_MUTE_MODE_REQUEST);
2846 }
2847
2848 /**
2849 * @brief Enable the UART transmitter and disable the UART receiver.
2850 * @param huart UART handle.
2851 * @retval HAL status
2852 */
HAL_HalfDuplex_EnableTransmitter(UART_HandleTypeDef * huart)2853 HAL_StatusTypeDef HAL_HalfDuplex_EnableTransmitter(UART_HandleTypeDef *huart)
2854 {
2855 __HAL_LOCK(huart);
2856 huart->gState = HAL_UART_STATE_BUSY;
2857
2858 /* Clear TE and RE bits */
2859 ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TE | USART_CR1_RE));
2860
2861 /* Enable the USART's transmit interface by setting the TE bit in the USART CR1 register */
2862 ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_TE);
2863
2864 huart->gState = HAL_UART_STATE_READY;
2865
2866 __HAL_UNLOCK(huart);
2867
2868 return HAL_OK;
2869 }
2870
2871 /**
2872 * @brief Enable the UART receiver and disable the UART transmitter.
2873 * @param huart UART handle.
2874 * @retval HAL status.
2875 */
HAL_HalfDuplex_EnableReceiver(UART_HandleTypeDef * huart)2876 HAL_StatusTypeDef HAL_HalfDuplex_EnableReceiver(UART_HandleTypeDef *huart)
2877 {
2878 __HAL_LOCK(huart);
2879 huart->gState = HAL_UART_STATE_BUSY;
2880
2881 /* Clear TE and RE bits */
2882 ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TE | USART_CR1_RE));
2883
2884 /* Enable the USART's receive interface by setting the RE bit in the USART CR1 register */
2885 ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_RE);
2886
2887 huart->gState = HAL_UART_STATE_READY;
2888
2889 __HAL_UNLOCK(huart);
2890
2891 return HAL_OK;
2892 }
2893
2894
2895 /**
2896 * @brief Transmit break characters.
2897 * @param huart UART handle.
2898 * @retval HAL status
2899 */
HAL_LIN_SendBreak(UART_HandleTypeDef * huart)2900 HAL_StatusTypeDef HAL_LIN_SendBreak(UART_HandleTypeDef *huart)
2901 {
2902 /* Check the parameters */
2903 assert_param(IS_UART_LIN_INSTANCE(huart->Instance));
2904
2905 __HAL_LOCK(huart);
2906
2907 huart->gState = HAL_UART_STATE_BUSY;
2908
2909 /* Send break characters */
2910 __HAL_UART_SEND_REQ(huart, UART_SENDBREAK_REQUEST);
2911
2912 huart->gState = HAL_UART_STATE_READY;
2913
2914 __HAL_UNLOCK(huart);
2915
2916 return HAL_OK;
2917 }
2918
2919 /**
2920 * @}
2921 */
2922
2923 /** @defgroup UART_Exported_Functions_Group4 Peripheral State and Error functions
2924 * @brief UART Peripheral State functions
2925 *
2926 @verbatim
2927 ==============================================================================
2928 ##### Peripheral State and Error functions #####
2929 ==============================================================================
2930 [..]
2931 This subsection provides functions allowing to :
2932 (+) Return the UART handle state.
2933 (+) Return the UART handle error code
2934
2935 @endverbatim
2936 * @{
2937 */
2938
2939 /**
2940 * @brief Return the UART handle state.
2941 * @param huart Pointer to a UART_HandleTypeDef structure that contains
2942 * the configuration information for the specified UART.
2943 * @retval HAL state
2944 */
HAL_UART_GetState(const UART_HandleTypeDef * huart)2945 HAL_UART_StateTypeDef HAL_UART_GetState(const UART_HandleTypeDef *huart)
2946 {
2947 uint32_t temp1;
2948 uint32_t temp2;
2949 temp1 = huart->gState;
2950 temp2 = huart->RxState;
2951
2952 return (HAL_UART_StateTypeDef)(temp1 | temp2);
2953 }
2954
2955 /**
2956 * @brief Return the UART handle error code.
2957 * @param huart Pointer to a UART_HandleTypeDef structure that contains
2958 * the configuration information for the specified UART.
2959 * @retval UART Error Code
2960 */
HAL_UART_GetError(const UART_HandleTypeDef * huart)2961 uint32_t HAL_UART_GetError(const UART_HandleTypeDef *huart)
2962 {
2963 return huart->ErrorCode;
2964 }
2965 /**
2966 * @}
2967 */
2968
2969 /**
2970 * @}
2971 */
2972
2973 /** @defgroup UART_Private_Functions UART Private Functions
2974 * @{
2975 */
2976
2977 /**
2978 * @brief Initialize the callbacks to their default values.
2979 * @param huart UART handle.
2980 * @retval none
2981 */
2982 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
UART_InitCallbacksToDefault(UART_HandleTypeDef * huart)2983 void UART_InitCallbacksToDefault(UART_HandleTypeDef *huart)
2984 {
2985 /* Init the UART Callback settings */
2986 huart->TxHalfCpltCallback = HAL_UART_TxHalfCpltCallback; /* Legacy weak TxHalfCpltCallback */
2987 huart->TxCpltCallback = HAL_UART_TxCpltCallback; /* Legacy weak TxCpltCallback */
2988 huart->RxHalfCpltCallback = HAL_UART_RxHalfCpltCallback; /* Legacy weak RxHalfCpltCallback */
2989 huart->RxCpltCallback = HAL_UART_RxCpltCallback; /* Legacy weak RxCpltCallback */
2990 huart->ErrorCallback = HAL_UART_ErrorCallback; /* Legacy weak ErrorCallback */
2991 huart->AbortCpltCallback = HAL_UART_AbortCpltCallback; /* Legacy weak AbortCpltCallback */
2992 huart->AbortTransmitCpltCallback = HAL_UART_AbortTransmitCpltCallback; /* Legacy weak AbortTransmitCpltCallback */
2993 huart->AbortReceiveCpltCallback = HAL_UART_AbortReceiveCpltCallback; /* Legacy weak AbortReceiveCpltCallback */
2994 huart->WakeupCallback = HAL_UARTEx_WakeupCallback; /* Legacy weak WakeupCallback */
2995 huart->RxFifoFullCallback = HAL_UARTEx_RxFifoFullCallback; /* Legacy weak RxFifoFullCallback */
2996 huart->TxFifoEmptyCallback = HAL_UARTEx_TxFifoEmptyCallback; /* Legacy weak TxFifoEmptyCallback */
2997 huart->RxEventCallback = HAL_UARTEx_RxEventCallback; /* Legacy weak RxEventCallback */
2998
2999 }
3000 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
3001
3002 /**
3003 * @brief Configure the UART peripheral.
3004 * @param huart UART handle.
3005 * @retval HAL status
3006 */
UART_SetConfig(UART_HandleTypeDef * huart)3007 HAL_StatusTypeDef UART_SetConfig(UART_HandleTypeDef *huart)
3008 {
3009 uint32_t tmpreg;
3010 uint16_t brrtemp;
3011 UART_ClockSourceTypeDef clocksource;
3012 uint32_t usartdiv;
3013 HAL_StatusTypeDef ret = HAL_OK;
3014 uint32_t lpuart_ker_ck_pres;
3015 uint32_t pclk;
3016
3017 /* Check the parameters */
3018 assert_param(IS_UART_BAUDRATE(huart->Init.BaudRate));
3019 assert_param(IS_UART_WORD_LENGTH(huart->Init.WordLength));
3020 if (UART_INSTANCE_LOWPOWER(huart))
3021 {
3022 assert_param(IS_LPUART_STOPBITS(huart->Init.StopBits));
3023 }
3024 else
3025 {
3026 assert_param(IS_UART_STOPBITS(huart->Init.StopBits));
3027 assert_param(IS_UART_ONE_BIT_SAMPLE(huart->Init.OneBitSampling));
3028 }
3029
3030 assert_param(IS_UART_PARITY(huart->Init.Parity));
3031 assert_param(IS_UART_MODE(huart->Init.Mode));
3032 assert_param(IS_UART_HARDWARE_FLOW_CONTROL(huart->Init.HwFlowCtl));
3033 assert_param(IS_UART_OVERSAMPLING(huart->Init.OverSampling));
3034 assert_param(IS_UART_PRESCALER(huart->Init.ClockPrescaler));
3035
3036 /*-------------------------- USART CR1 Configuration -----------------------*/
3037 /* Clear M, PCE, PS, TE, RE and OVER8 bits and configure
3038 * the UART Word Length, Parity, Mode and oversampling:
3039 * set the M bits according to huart->Init.WordLength value
3040 * set PCE and PS bits according to huart->Init.Parity value
3041 * set TE and RE bits according to huart->Init.Mode value
3042 * set OVER8 bit according to huart->Init.OverSampling value */
3043 tmpreg = (uint32_t)huart->Init.WordLength | huart->Init.Parity | huart->Init.Mode | huart->Init.OverSampling ;
3044 MODIFY_REG(huart->Instance->CR1, USART_CR1_FIELDS, tmpreg);
3045
3046 /*-------------------------- USART CR2 Configuration -----------------------*/
3047 /* Configure the UART Stop Bits: Set STOP[13:12] bits according
3048 * to huart->Init.StopBits value */
3049 MODIFY_REG(huart->Instance->CR2, USART_CR2_STOP, huart->Init.StopBits);
3050
3051 /*-------------------------- USART CR3 Configuration -----------------------*/
3052 /* Configure
3053 * - UART HardWare Flow Control: set CTSE and RTSE bits according
3054 * to huart->Init.HwFlowCtl value
3055 * - one-bit sampling method versus three samples' majority rule according
3056 * to huart->Init.OneBitSampling (not applicable to LPUART) */
3057 tmpreg = (uint32_t)huart->Init.HwFlowCtl;
3058
3059 if (!(UART_INSTANCE_LOWPOWER(huart)))
3060 {
3061 tmpreg |= huart->Init.OneBitSampling;
3062 }
3063 MODIFY_REG(huart->Instance->CR3, USART_CR3_FIELDS, tmpreg);
3064
3065 /*-------------------------- USART PRESC Configuration -----------------------*/
3066 /* Configure
3067 * - UART Clock Prescaler : set PRESCALER according to huart->Init.ClockPrescaler value */
3068 MODIFY_REG(huart->Instance->PRESC, USART_PRESC_PRESCALER, huart->Init.ClockPrescaler);
3069
3070 /*-------------------------- USART BRR Configuration -----------------------*/
3071 UART_GETCLOCKSOURCE(huart, clocksource);
3072
3073 /* Check LPUART instance */
3074 if (UART_INSTANCE_LOWPOWER(huart))
3075 {
3076 /* Retrieve frequency clock */
3077 switch (clocksource)
3078 {
3079 case UART_CLOCKSOURCE_PCLK1:
3080 pclk = HAL_RCC_GetPCLK1Freq();
3081 break;
3082 case UART_CLOCKSOURCE_PCLK2:
3083 pclk = HAL_RCC_GetPCLK2Freq();
3084 break;
3085 case UART_CLOCKSOURCE_HSI:
3086 pclk = (uint32_t) HSI_VALUE;
3087 break;
3088 case UART_CLOCKSOURCE_SYSCLK:
3089 pclk = HAL_RCC_GetSysClockFreq();
3090 break;
3091 case UART_CLOCKSOURCE_LSE:
3092 pclk = (uint32_t) LSE_VALUE;
3093 break;
3094 default:
3095 pclk = 0U;
3096 ret = HAL_ERROR;
3097 break;
3098 }
3099
3100 /* If proper clock source reported */
3101 if (pclk != 0U)
3102 {
3103 /* Compute clock after Prescaler */
3104 lpuart_ker_ck_pres = (pclk / UARTPrescTable[huart->Init.ClockPrescaler]);
3105
3106 /* Ensure that Frequency clock is in the range [3 * baudrate, 4096 * baudrate] */
3107 if ((lpuart_ker_ck_pres < (3U * huart->Init.BaudRate)) ||
3108 (lpuart_ker_ck_pres > (4096U * huart->Init.BaudRate)))
3109 {
3110 ret = HAL_ERROR;
3111 }
3112 else
3113 {
3114 /* Check computed UsartDiv value is in allocated range
3115 (it is forbidden to write values lower than 0x300 in the LPUART_BRR register) */
3116 usartdiv = (uint32_t)(UART_DIV_LPUART(pclk, huart->Init.BaudRate, huart->Init.ClockPrescaler));
3117 if ((usartdiv >= LPUART_BRR_MIN) && (usartdiv <= LPUART_BRR_MAX))
3118 {
3119 huart->Instance->BRR = usartdiv;
3120 }
3121 else
3122 {
3123 ret = HAL_ERROR;
3124 }
3125 } /* if ( (lpuart_ker_ck_pres < (3 * huart->Init.BaudRate) ) ||
3126 (lpuart_ker_ck_pres > (4096 * huart->Init.BaudRate) )) */
3127 } /* if (pclk != 0) */
3128 }
3129 /* Check UART Over Sampling to set Baud Rate Register */
3130 else if (huart->Init.OverSampling == UART_OVERSAMPLING_8)
3131 {
3132 switch (clocksource)
3133 {
3134 case UART_CLOCKSOURCE_PCLK1:
3135 pclk = HAL_RCC_GetPCLK1Freq();
3136 break;
3137 case UART_CLOCKSOURCE_PCLK2:
3138 pclk = HAL_RCC_GetPCLK2Freq();
3139 break;
3140 case UART_CLOCKSOURCE_HSI:
3141 pclk = (uint32_t) HSI_VALUE;
3142 break;
3143 case UART_CLOCKSOURCE_SYSCLK:
3144 pclk = HAL_RCC_GetSysClockFreq();
3145 break;
3146 case UART_CLOCKSOURCE_LSE:
3147 pclk = (uint32_t) LSE_VALUE;
3148 break;
3149 default:
3150 pclk = 0U;
3151 ret = HAL_ERROR;
3152 break;
3153 }
3154
3155 /* USARTDIV must be greater than or equal to 0d16 */
3156 if (pclk != 0U)
3157 {
3158 usartdiv = (uint32_t)(UART_DIV_SAMPLING8(pclk, huart->Init.BaudRate, huart->Init.ClockPrescaler));
3159 if ((usartdiv >= UART_BRR_MIN) && (usartdiv <= UART_BRR_MAX))
3160 {
3161 brrtemp = (uint16_t)(usartdiv & 0xFFF0U);
3162 brrtemp |= (uint16_t)((usartdiv & (uint16_t)0x000FU) >> 1U);
3163 huart->Instance->BRR = brrtemp;
3164 }
3165 else
3166 {
3167 ret = HAL_ERROR;
3168 }
3169 }
3170 }
3171 else
3172 {
3173 switch (clocksource)
3174 {
3175 case UART_CLOCKSOURCE_PCLK1:
3176 pclk = HAL_RCC_GetPCLK1Freq();
3177 break;
3178 case UART_CLOCKSOURCE_PCLK2:
3179 pclk = HAL_RCC_GetPCLK2Freq();
3180 break;
3181 case UART_CLOCKSOURCE_HSI:
3182 pclk = (uint32_t) HSI_VALUE;
3183 break;
3184 case UART_CLOCKSOURCE_SYSCLK:
3185 pclk = HAL_RCC_GetSysClockFreq();
3186 break;
3187 case UART_CLOCKSOURCE_LSE:
3188 pclk = (uint32_t) LSE_VALUE;
3189 break;
3190 default:
3191 pclk = 0U;
3192 ret = HAL_ERROR;
3193 break;
3194 }
3195
3196 if (pclk != 0U)
3197 {
3198 /* USARTDIV must be greater than or equal to 0d16 */
3199 usartdiv = (uint32_t)(UART_DIV_SAMPLING16(pclk, huart->Init.BaudRate, huart->Init.ClockPrescaler));
3200 if ((usartdiv >= UART_BRR_MIN) && (usartdiv <= UART_BRR_MAX))
3201 {
3202 huart->Instance->BRR = (uint16_t)usartdiv;
3203 }
3204 else
3205 {
3206 ret = HAL_ERROR;
3207 }
3208 }
3209 }
3210
3211 /* Initialize the number of data to process during RX/TX ISR execution */
3212 huart->NbTxDataToProcess = 1;
3213 huart->NbRxDataToProcess = 1;
3214
3215 /* Clear ISR function pointers */
3216 huart->RxISR = NULL;
3217 huart->TxISR = NULL;
3218
3219 return ret;
3220 }
3221
3222 /**
3223 * @brief Configure the UART peripheral advanced features.
3224 * @param huart UART handle.
3225 * @retval None
3226 */
UART_AdvFeatureConfig(UART_HandleTypeDef * huart)3227 void UART_AdvFeatureConfig(UART_HandleTypeDef *huart)
3228 {
3229 /* Check whether the set of advanced features to configure is properly set */
3230 assert_param(IS_UART_ADVFEATURE_INIT(huart->AdvancedInit.AdvFeatureInit));
3231
3232 /* if required, configure TX pin active level inversion */
3233 if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_TXINVERT_INIT))
3234 {
3235 assert_param(IS_UART_ADVFEATURE_TXINV(huart->AdvancedInit.TxPinLevelInvert));
3236 MODIFY_REG(huart->Instance->CR2, USART_CR2_TXINV, huart->AdvancedInit.TxPinLevelInvert);
3237 }
3238
3239 /* if required, configure RX pin active level inversion */
3240 if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_RXINVERT_INIT))
3241 {
3242 assert_param(IS_UART_ADVFEATURE_RXINV(huart->AdvancedInit.RxPinLevelInvert));
3243 MODIFY_REG(huart->Instance->CR2, USART_CR2_RXINV, huart->AdvancedInit.RxPinLevelInvert);
3244 }
3245
3246 /* if required, configure data inversion */
3247 if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_DATAINVERT_INIT))
3248 {
3249 assert_param(IS_UART_ADVFEATURE_DATAINV(huart->AdvancedInit.DataInvert));
3250 MODIFY_REG(huart->Instance->CR2, USART_CR2_DATAINV, huart->AdvancedInit.DataInvert);
3251 }
3252
3253 /* if required, configure RX/TX pins swap */
3254 if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_SWAP_INIT))
3255 {
3256 assert_param(IS_UART_ADVFEATURE_SWAP(huart->AdvancedInit.Swap));
3257 MODIFY_REG(huart->Instance->CR2, USART_CR2_SWAP, huart->AdvancedInit.Swap);
3258 }
3259
3260 /* if required, configure RX overrun detection disabling */
3261 if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_RXOVERRUNDISABLE_INIT))
3262 {
3263 assert_param(IS_UART_OVERRUN(huart->AdvancedInit.OverrunDisable));
3264 MODIFY_REG(huart->Instance->CR3, USART_CR3_OVRDIS, huart->AdvancedInit.OverrunDisable);
3265 }
3266
3267 /* if required, configure DMA disabling on reception error */
3268 if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_DMADISABLEONERROR_INIT))
3269 {
3270 assert_param(IS_UART_ADVFEATURE_DMAONRXERROR(huart->AdvancedInit.DMADisableonRxError));
3271 MODIFY_REG(huart->Instance->CR3, USART_CR3_DDRE, huart->AdvancedInit.DMADisableonRxError);
3272 }
3273
3274 /* if required, configure auto Baud rate detection scheme */
3275 if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_AUTOBAUDRATE_INIT))
3276 {
3277 assert_param(IS_USART_AUTOBAUDRATE_DETECTION_INSTANCE(huart->Instance));
3278 assert_param(IS_UART_ADVFEATURE_AUTOBAUDRATE(huart->AdvancedInit.AutoBaudRateEnable));
3279 MODIFY_REG(huart->Instance->CR2, USART_CR2_ABREN, huart->AdvancedInit.AutoBaudRateEnable);
3280 /* set auto Baudrate detection parameters if detection is enabled */
3281 if (huart->AdvancedInit.AutoBaudRateEnable == UART_ADVFEATURE_AUTOBAUDRATE_ENABLE)
3282 {
3283 assert_param(IS_UART_ADVFEATURE_AUTOBAUDRATEMODE(huart->AdvancedInit.AutoBaudRateMode));
3284 MODIFY_REG(huart->Instance->CR2, USART_CR2_ABRMODE, huart->AdvancedInit.AutoBaudRateMode);
3285 }
3286 }
3287
3288 /* if required, configure MSB first on communication line */
3289 if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_MSBFIRST_INIT))
3290 {
3291 assert_param(IS_UART_ADVFEATURE_MSBFIRST(huart->AdvancedInit.MSBFirst));
3292 MODIFY_REG(huart->Instance->CR2, USART_CR2_MSBFIRST, huart->AdvancedInit.MSBFirst);
3293 }
3294 }
3295
3296 /**
3297 * @brief Check the UART Idle State.
3298 * @param huart UART handle.
3299 * @retval HAL status
3300 */
UART_CheckIdleState(UART_HandleTypeDef * huart)3301 HAL_StatusTypeDef UART_CheckIdleState(UART_HandleTypeDef *huart)
3302 {
3303 uint32_t tickstart;
3304
3305 /* Initialize the UART ErrorCode */
3306 huart->ErrorCode = HAL_UART_ERROR_NONE;
3307
3308 /* Init tickstart for timeout management */
3309 tickstart = HAL_GetTick();
3310
3311 /* Check if the Transmitter is enabled */
3312 if ((huart->Instance->CR1 & USART_CR1_TE) == USART_CR1_TE)
3313 {
3314 /* Wait until TEACK flag is set */
3315 if (UART_WaitOnFlagUntilTimeout(huart, USART_ISR_TEACK, RESET, tickstart, HAL_UART_TIMEOUT_VALUE) != HAL_OK)
3316 {
3317 /* Disable TXE interrupt for the interrupt process */
3318 ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TXEIE_TXFNFIE));
3319
3320 huart->gState = HAL_UART_STATE_READY;
3321
3322 __HAL_UNLOCK(huart);
3323
3324 /* Timeout occurred */
3325 return HAL_TIMEOUT;
3326 }
3327 }
3328
3329 /* Check if the Receiver is enabled */
3330 if ((huart->Instance->CR1 & USART_CR1_RE) == USART_CR1_RE)
3331 {
3332 /* Wait until REACK flag is set */
3333 if (UART_WaitOnFlagUntilTimeout(huart, USART_ISR_REACK, RESET, tickstart, HAL_UART_TIMEOUT_VALUE) != HAL_OK)
3334 {
3335 /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error)
3336 interrupts for the interrupt process */
3337 ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE_RXFNEIE | USART_CR1_PEIE));
3338 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
3339
3340 huart->RxState = HAL_UART_STATE_READY;
3341
3342 __HAL_UNLOCK(huart);
3343
3344 /* Timeout occurred */
3345 return HAL_TIMEOUT;
3346 }
3347 }
3348
3349 /* Initialize the UART State */
3350 huart->gState = HAL_UART_STATE_READY;
3351 huart->RxState = HAL_UART_STATE_READY;
3352 huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
3353 huart->RxEventType = HAL_UART_RXEVENT_TC;
3354
3355 __HAL_UNLOCK(huart);
3356
3357 return HAL_OK;
3358 }
3359
3360 /**
3361 * @brief This function handles UART Communication Timeout. It waits
3362 * until a flag is no longer in the specified status.
3363 * @param huart UART handle.
3364 * @param Flag Specifies the UART flag to check
3365 * @param Status The actual Flag status (SET or RESET)
3366 * @param Tickstart Tick start value
3367 * @param Timeout Timeout duration
3368 * @retval HAL status
3369 */
UART_WaitOnFlagUntilTimeout(UART_HandleTypeDef * huart,uint32_t Flag,FlagStatus Status,uint32_t Tickstart,uint32_t Timeout)3370 HAL_StatusTypeDef UART_WaitOnFlagUntilTimeout(UART_HandleTypeDef *huart, uint32_t Flag, FlagStatus Status,
3371 uint32_t Tickstart, uint32_t Timeout)
3372 {
3373 /* Wait until flag is set */
3374 while ((__HAL_UART_GET_FLAG(huart, Flag) ? SET : RESET) == Status)
3375 {
3376 /* Check for the Timeout */
3377 if (Timeout != HAL_MAX_DELAY)
3378 {
3379 if (((HAL_GetTick() - Tickstart) > Timeout) || (Timeout == 0U))
3380 {
3381
3382 return HAL_TIMEOUT;
3383 }
3384
3385 if (READ_BIT(huart->Instance->CR1, USART_CR1_RE) != 0U)
3386 {
3387 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) == SET)
3388 {
3389 /* Clear Overrun Error flag*/
3390 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF);
3391
3392 /* Blocking error : transfer is aborted
3393 Set the UART state ready to be able to start again the process,
3394 Disable Rx Interrupts if ongoing */
3395 UART_EndRxTransfer(huart);
3396
3397 huart->ErrorCode = HAL_UART_ERROR_ORE;
3398
3399 /* Process Unlocked */
3400 __HAL_UNLOCK(huart);
3401
3402 return HAL_ERROR;
3403 }
3404 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_RTOF) == SET)
3405 {
3406 /* Clear Receiver Timeout flag*/
3407 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_RTOF);
3408
3409 /* Blocking error : transfer is aborted
3410 Set the UART state ready to be able to start again the process,
3411 Disable Rx Interrupts if ongoing */
3412 UART_EndRxTransfer(huart);
3413
3414 huart->ErrorCode = HAL_UART_ERROR_RTO;
3415
3416 /* Process Unlocked */
3417 __HAL_UNLOCK(huart);
3418
3419 return HAL_TIMEOUT;
3420 }
3421 }
3422 }
3423 }
3424 return HAL_OK;
3425 }
3426
3427 /**
3428 * @brief Start Receive operation in interrupt mode.
3429 * @note This function could be called by all HAL UART API providing reception in Interrupt mode.
3430 * @note When calling this function, parameters validity is considered as already checked,
3431 * i.e. Rx State, buffer address, ...
3432 * UART Handle is assumed as Locked.
3433 * @param huart UART handle.
3434 * @param pData Pointer to data buffer (u8 or u16 data elements).
3435 * @param Size Amount of data elements (u8 or u16) to be received.
3436 * @retval HAL status
3437 */
UART_Start_Receive_IT(UART_HandleTypeDef * huart,uint8_t * pData,uint16_t Size)3438 HAL_StatusTypeDef UART_Start_Receive_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
3439 {
3440 huart->pRxBuffPtr = pData;
3441 huart->RxXferSize = Size;
3442 huart->RxXferCount = Size;
3443 huart->RxISR = NULL;
3444
3445 /* Computation of UART mask to apply to RDR register */
3446 UART_MASK_COMPUTATION(huart);
3447
3448 huart->ErrorCode = HAL_UART_ERROR_NONE;
3449 huart->RxState = HAL_UART_STATE_BUSY_RX;
3450
3451 /* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */
3452 ATOMIC_SET_BIT(huart->Instance->CR3, USART_CR3_EIE);
3453
3454 /* Configure Rx interrupt processing */
3455 if ((huart->FifoMode == UART_FIFOMODE_ENABLE) && (Size >= huart->NbRxDataToProcess))
3456 {
3457 /* Set the Rx ISR function pointer according to the data word length */
3458 if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
3459 {
3460 huart->RxISR = UART_RxISR_16BIT_FIFOEN;
3461 }
3462 else
3463 {
3464 huart->RxISR = UART_RxISR_8BIT_FIFOEN;
3465 }
3466
3467 /* Enable the UART Parity Error interrupt and RX FIFO Threshold interrupt */
3468 if (huart->Init.Parity != UART_PARITY_NONE)
3469 {
3470 ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_PEIE);
3471 }
3472 ATOMIC_SET_BIT(huart->Instance->CR3, USART_CR3_RXFTIE);
3473 }
3474 else
3475 {
3476 /* Set the Rx ISR function pointer according to the data word length */
3477 if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
3478 {
3479 huart->RxISR = UART_RxISR_16BIT;
3480 }
3481 else
3482 {
3483 huart->RxISR = UART_RxISR_8BIT;
3484 }
3485
3486 /* Enable the UART Parity Error interrupt and Data Register Not Empty interrupt */
3487 if (huart->Init.Parity != UART_PARITY_NONE)
3488 {
3489 ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_PEIE | USART_CR1_RXNEIE_RXFNEIE);
3490 }
3491 else
3492 {
3493 ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_RXNEIE_RXFNEIE);
3494 }
3495 }
3496 return HAL_OK;
3497 }
3498
3499 /**
3500 * @brief Start Receive operation in DMA mode.
3501 * @note This function could be called by all HAL UART API providing reception in DMA mode.
3502 * @note When calling this function, parameters validity is considered as already checked,
3503 * i.e. Rx State, buffer address, ...
3504 * UART Handle is assumed as Locked.
3505 * @param huart UART handle.
3506 * @param pData Pointer to data buffer (u8 or u16 data elements).
3507 * @param Size Amount of data elements (u8 or u16) to be received.
3508 * @retval HAL status
3509 */
UART_Start_Receive_DMA(UART_HandleTypeDef * huart,uint8_t * pData,uint16_t Size)3510 HAL_StatusTypeDef UART_Start_Receive_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
3511 {
3512 huart->pRxBuffPtr = pData;
3513 huart->RxXferSize = Size;
3514
3515 huart->ErrorCode = HAL_UART_ERROR_NONE;
3516 huart->RxState = HAL_UART_STATE_BUSY_RX;
3517
3518 if (huart->hdmarx != NULL)
3519 {
3520 /* Set the UART DMA transfer complete callback */
3521 huart->hdmarx->XferCpltCallback = UART_DMAReceiveCplt;
3522
3523 /* Set the UART DMA Half transfer complete callback */
3524 huart->hdmarx->XferHalfCpltCallback = UART_DMARxHalfCplt;
3525
3526 /* Set the DMA error callback */
3527 huart->hdmarx->XferErrorCallback = UART_DMAError;
3528
3529 /* Set the DMA abort callback */
3530 huart->hdmarx->XferAbortCallback = NULL;
3531
3532 /* Enable the DMA channel */
3533 if (HAL_DMA_Start_IT(huart->hdmarx, (uint32_t)&huart->Instance->RDR, (uint32_t)huart->pRxBuffPtr, Size) != HAL_OK)
3534 {
3535 /* Set error code to DMA */
3536 huart->ErrorCode = HAL_UART_ERROR_DMA;
3537
3538 /* Restore huart->RxState to ready */
3539 huart->RxState = HAL_UART_STATE_READY;
3540
3541 return HAL_ERROR;
3542 }
3543 }
3544
3545 /* Enable the UART Parity Error Interrupt */
3546 if (huart->Init.Parity != UART_PARITY_NONE)
3547 {
3548 ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_PEIE);
3549 }
3550
3551 /* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */
3552 ATOMIC_SET_BIT(huart->Instance->CR3, USART_CR3_EIE);
3553
3554 /* Enable the DMA transfer for the receiver request by setting the DMAR bit
3555 in the UART CR3 register */
3556 ATOMIC_SET_BIT(huart->Instance->CR3, USART_CR3_DMAR);
3557
3558 return HAL_OK;
3559 }
3560
3561
3562 /**
3563 * @brief End ongoing Tx transfer on UART peripheral (following error detection or Transmit completion).
3564 * @param huart UART handle.
3565 * @retval None
3566 */
UART_EndTxTransfer(UART_HandleTypeDef * huart)3567 static void UART_EndTxTransfer(UART_HandleTypeDef *huart)
3568 {
3569 /* Disable TXEIE, TCIE, TXFT interrupts */
3570 ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TXEIE_TXFNFIE | USART_CR1_TCIE));
3571 ATOMIC_CLEAR_BIT(huart->Instance->CR3, (USART_CR3_TXFTIE));
3572
3573 /* At end of Tx process, restore huart->gState to Ready */
3574 huart->gState = HAL_UART_STATE_READY;
3575 }
3576
3577
3578 /**
3579 * @brief End ongoing Rx transfer on UART peripheral (following error detection or Reception completion).
3580 * @param huart UART handle.
3581 * @retval None
3582 */
UART_EndRxTransfer(UART_HandleTypeDef * huart)3583 static void UART_EndRxTransfer(UART_HandleTypeDef *huart)
3584 {
3585 /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
3586 ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE_RXFNEIE | USART_CR1_PEIE));
3587 ATOMIC_CLEAR_BIT(huart->Instance->CR3, (USART_CR3_EIE | USART_CR3_RXFTIE));
3588
3589 /* In case of reception waiting for IDLE event, disable also the IDLE IE interrupt source */
3590 if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
3591 {
3592 ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_IDLEIE);
3593 }
3594
3595 /* At end of Rx process, restore huart->RxState to Ready */
3596 huart->RxState = HAL_UART_STATE_READY;
3597 huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
3598
3599 /* Reset RxIsr function pointer */
3600 huart->RxISR = NULL;
3601 }
3602
3603
3604 /**
3605 * @brief DMA UART transmit process complete callback.
3606 * @param hdma DMA handle.
3607 * @retval None
3608 */
UART_DMATransmitCplt(DMA_HandleTypeDef * hdma)3609 static void UART_DMATransmitCplt(DMA_HandleTypeDef *hdma)
3610 {
3611 UART_HandleTypeDef *huart = (UART_HandleTypeDef *)(hdma->Parent);
3612
3613 /* DMA Normal mode */
3614 if (HAL_IS_BIT_CLR(hdma->Instance->CCR, DMA_CCR_CIRC))
3615 {
3616 huart->TxXferCount = 0U;
3617
3618 /* Disable the DMA transfer for transmit request by resetting the DMAT bit
3619 in the UART CR3 register */
3620 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
3621
3622 /* Enable the UART Transmit Complete Interrupt */
3623 ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_TCIE);
3624 }
3625 /* DMA Circular mode */
3626 else
3627 {
3628 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
3629 /*Call registered Tx complete callback*/
3630 huart->TxCpltCallback(huart);
3631 #else
3632 /*Call legacy weak Tx complete callback*/
3633 HAL_UART_TxCpltCallback(huart);
3634 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
3635 }
3636 }
3637
3638 /**
3639 * @brief DMA UART transmit process half complete callback.
3640 * @param hdma DMA handle.
3641 * @retval None
3642 */
UART_DMATxHalfCplt(DMA_HandleTypeDef * hdma)3643 static void UART_DMATxHalfCplt(DMA_HandleTypeDef *hdma)
3644 {
3645 UART_HandleTypeDef *huart = (UART_HandleTypeDef *)(hdma->Parent);
3646
3647 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
3648 /*Call registered Tx Half complete callback*/
3649 huart->TxHalfCpltCallback(huart);
3650 #else
3651 /*Call legacy weak Tx Half complete callback*/
3652 HAL_UART_TxHalfCpltCallback(huart);
3653 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
3654 }
3655
3656 /**
3657 * @brief DMA UART receive process complete callback.
3658 * @param hdma DMA handle.
3659 * @retval None
3660 */
UART_DMAReceiveCplt(DMA_HandleTypeDef * hdma)3661 static void UART_DMAReceiveCplt(DMA_HandleTypeDef *hdma)
3662 {
3663 UART_HandleTypeDef *huart = (UART_HandleTypeDef *)(hdma->Parent);
3664
3665 /* DMA Normal mode */
3666 if (HAL_IS_BIT_CLR(hdma->Instance->CCR, DMA_CCR_CIRC))
3667 {
3668 huart->RxXferCount = 0U;
3669
3670 /* Disable PE and ERR (Frame error, noise error, overrun error) interrupts */
3671 ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE);
3672 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
3673
3674 /* Disable the DMA transfer for the receiver request by resetting the DMAR bit
3675 in the UART CR3 register */
3676 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
3677
3678 /* At end of Rx process, restore huart->RxState to Ready */
3679 huart->RxState = HAL_UART_STATE_READY;
3680
3681 /* If Reception till IDLE event has been selected, Disable IDLE Interrupt */
3682 if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
3683 {
3684 ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_IDLEIE);
3685 }
3686 }
3687
3688 /* Initialize type of RxEvent that correspond to RxEvent callback execution;
3689 In this case, Rx Event type is Transfer Complete */
3690 huart->RxEventType = HAL_UART_RXEVENT_TC;
3691
3692 /* Check current reception Mode :
3693 If Reception till IDLE event has been selected : use Rx Event callback */
3694 if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
3695 {
3696 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
3697 /*Call registered Rx Event callback*/
3698 huart->RxEventCallback(huart, huart->RxXferSize);
3699 #else
3700 /*Call legacy weak Rx Event callback*/
3701 HAL_UARTEx_RxEventCallback(huart, huart->RxXferSize);
3702 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
3703 }
3704 else
3705 {
3706 /* In other cases : use Rx Complete callback */
3707 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
3708 /*Call registered Rx complete callback*/
3709 huart->RxCpltCallback(huart);
3710 #else
3711 /*Call legacy weak Rx complete callback*/
3712 HAL_UART_RxCpltCallback(huart);
3713 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
3714 }
3715 }
3716
3717 /**
3718 * @brief DMA UART receive process half complete callback.
3719 * @param hdma DMA handle.
3720 * @retval None
3721 */
UART_DMARxHalfCplt(DMA_HandleTypeDef * hdma)3722 static void UART_DMARxHalfCplt(DMA_HandleTypeDef *hdma)
3723 {
3724 UART_HandleTypeDef *huart = (UART_HandleTypeDef *)(hdma->Parent);
3725
3726 /* Initialize type of RxEvent that correspond to RxEvent callback execution;
3727 In this case, Rx Event type is Half Transfer */
3728 huart->RxEventType = HAL_UART_RXEVENT_HT;
3729
3730 /* Check current reception Mode :
3731 If Reception till IDLE event has been selected : use Rx Event callback */
3732 if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
3733 {
3734 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
3735 /*Call registered Rx Event callback*/
3736 huart->RxEventCallback(huart, huart->RxXferSize / 2U);
3737 #else
3738 /*Call legacy weak Rx Event callback*/
3739 HAL_UARTEx_RxEventCallback(huart, huart->RxXferSize / 2U);
3740 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
3741 }
3742 else
3743 {
3744 /* In other cases : use Rx Half Complete callback */
3745 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
3746 /*Call registered Rx Half complete callback*/
3747 huart->RxHalfCpltCallback(huart);
3748 #else
3749 /*Call legacy weak Rx Half complete callback*/
3750 HAL_UART_RxHalfCpltCallback(huart);
3751 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
3752 }
3753 }
3754
3755 /**
3756 * @brief DMA UART communication error callback.
3757 * @param hdma DMA handle.
3758 * @retval None
3759 */
UART_DMAError(DMA_HandleTypeDef * hdma)3760 static void UART_DMAError(DMA_HandleTypeDef *hdma)
3761 {
3762 UART_HandleTypeDef *huart = (UART_HandleTypeDef *)(hdma->Parent);
3763
3764 const HAL_UART_StateTypeDef gstate = huart->gState;
3765 const HAL_UART_StateTypeDef rxstate = huart->RxState;
3766
3767 /* Stop UART DMA Tx request if ongoing */
3768 if ((HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT)) &&
3769 (gstate == HAL_UART_STATE_BUSY_TX))
3770 {
3771 huart->TxXferCount = 0U;
3772 UART_EndTxTransfer(huart);
3773 }
3774
3775 /* Stop UART DMA Rx request if ongoing */
3776 if ((HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)) &&
3777 (rxstate == HAL_UART_STATE_BUSY_RX))
3778 {
3779 huart->RxXferCount = 0U;
3780 UART_EndRxTransfer(huart);
3781 }
3782
3783 huart->ErrorCode |= HAL_UART_ERROR_DMA;
3784
3785 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
3786 /*Call registered error callback*/
3787 huart->ErrorCallback(huart);
3788 #else
3789 /*Call legacy weak error callback*/
3790 HAL_UART_ErrorCallback(huart);
3791 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
3792 }
3793
3794 /**
3795 * @brief DMA UART communication abort callback, when initiated by HAL services on Error
3796 * (To be called at end of DMA Abort procedure following error occurrence).
3797 * @param hdma DMA handle.
3798 * @retval None
3799 */
UART_DMAAbortOnError(DMA_HandleTypeDef * hdma)3800 static void UART_DMAAbortOnError(DMA_HandleTypeDef *hdma)
3801 {
3802 UART_HandleTypeDef *huart = (UART_HandleTypeDef *)(hdma->Parent);
3803 huart->RxXferCount = 0U;
3804 huart->TxXferCount = 0U;
3805
3806 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
3807 /*Call registered error callback*/
3808 huart->ErrorCallback(huart);
3809 #else
3810 /*Call legacy weak error callback*/
3811 HAL_UART_ErrorCallback(huart);
3812 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
3813 }
3814
3815 /**
3816 * @brief DMA UART Tx communication abort callback, when initiated by user
3817 * (To be called at end of DMA Tx Abort procedure following user abort request).
3818 * @note When this callback is executed, User Abort complete call back is called only if no
3819 * Abort still ongoing for Rx DMA Handle.
3820 * @param hdma DMA handle.
3821 * @retval None
3822 */
UART_DMATxAbortCallback(DMA_HandleTypeDef * hdma)3823 static void UART_DMATxAbortCallback(DMA_HandleTypeDef *hdma)
3824 {
3825 UART_HandleTypeDef *huart = (UART_HandleTypeDef *)(hdma->Parent);
3826
3827 huart->hdmatx->XferAbortCallback = NULL;
3828
3829 /* Check if an Abort process is still ongoing */
3830 if (huart->hdmarx != NULL)
3831 {
3832 if (huart->hdmarx->XferAbortCallback != NULL)
3833 {
3834 return;
3835 }
3836 }
3837
3838 /* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */
3839 huart->TxXferCount = 0U;
3840 huart->RxXferCount = 0U;
3841
3842 /* Reset errorCode */
3843 huart->ErrorCode = HAL_UART_ERROR_NONE;
3844
3845 /* Clear the Error flags in the ICR register */
3846 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
3847
3848 /* Flush the whole TX FIFO (if needed) */
3849 if (huart->FifoMode == UART_FIFOMODE_ENABLE)
3850 {
3851 __HAL_UART_SEND_REQ(huart, UART_TXDATA_FLUSH_REQUEST);
3852 }
3853
3854 /* Restore huart->gState and huart->RxState to Ready */
3855 huart->gState = HAL_UART_STATE_READY;
3856 huart->RxState = HAL_UART_STATE_READY;
3857 huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
3858
3859 /* Call user Abort complete callback */
3860 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
3861 /* Call registered Abort complete callback */
3862 huart->AbortCpltCallback(huart);
3863 #else
3864 /* Call legacy weak Abort complete callback */
3865 HAL_UART_AbortCpltCallback(huart);
3866 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
3867 }
3868
3869
3870 /**
3871 * @brief DMA UART Rx communication abort callback, when initiated by user
3872 * (To be called at end of DMA Rx Abort procedure following user abort request).
3873 * @note When this callback is executed, User Abort complete call back is called only if no
3874 * Abort still ongoing for Tx DMA Handle.
3875 * @param hdma DMA handle.
3876 * @retval None
3877 */
UART_DMARxAbortCallback(DMA_HandleTypeDef * hdma)3878 static void UART_DMARxAbortCallback(DMA_HandleTypeDef *hdma)
3879 {
3880 UART_HandleTypeDef *huart = (UART_HandleTypeDef *)(hdma->Parent);
3881
3882 huart->hdmarx->XferAbortCallback = NULL;
3883
3884 /* Check if an Abort process is still ongoing */
3885 if (huart->hdmatx != NULL)
3886 {
3887 if (huart->hdmatx->XferAbortCallback != NULL)
3888 {
3889 return;
3890 }
3891 }
3892
3893 /* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */
3894 huart->TxXferCount = 0U;
3895 huart->RxXferCount = 0U;
3896
3897 /* Reset errorCode */
3898 huart->ErrorCode = HAL_UART_ERROR_NONE;
3899
3900 /* Clear the Error flags in the ICR register */
3901 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
3902
3903 /* Discard the received data */
3904 __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
3905
3906 /* Restore huart->gState and huart->RxState to Ready */
3907 huart->gState = HAL_UART_STATE_READY;
3908 huart->RxState = HAL_UART_STATE_READY;
3909 huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
3910
3911 /* Call user Abort complete callback */
3912 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
3913 /* Call registered Abort complete callback */
3914 huart->AbortCpltCallback(huart);
3915 #else
3916 /* Call legacy weak Abort complete callback */
3917 HAL_UART_AbortCpltCallback(huart);
3918 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
3919 }
3920
3921
3922 /**
3923 * @brief DMA UART Tx communication abort callback, when initiated by user by a call to
3924 * HAL_UART_AbortTransmit_IT API (Abort only Tx transfer)
3925 * (This callback is executed at end of DMA Tx Abort procedure following user abort request,
3926 * and leads to user Tx Abort Complete callback execution).
3927 * @param hdma DMA handle.
3928 * @retval None
3929 */
UART_DMATxOnlyAbortCallback(DMA_HandleTypeDef * hdma)3930 static void UART_DMATxOnlyAbortCallback(DMA_HandleTypeDef *hdma)
3931 {
3932 UART_HandleTypeDef *huart = (UART_HandleTypeDef *)(hdma->Parent);
3933
3934 huart->TxXferCount = 0U;
3935
3936 /* Flush the whole TX FIFO (if needed) */
3937 if (huart->FifoMode == UART_FIFOMODE_ENABLE)
3938 {
3939 __HAL_UART_SEND_REQ(huart, UART_TXDATA_FLUSH_REQUEST);
3940 }
3941
3942 /* Restore huart->gState to Ready */
3943 huart->gState = HAL_UART_STATE_READY;
3944
3945 /* Call user Abort complete callback */
3946 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
3947 /* Call registered Abort Transmit Complete Callback */
3948 huart->AbortTransmitCpltCallback(huart);
3949 #else
3950 /* Call legacy weak Abort Transmit Complete Callback */
3951 HAL_UART_AbortTransmitCpltCallback(huart);
3952 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
3953 }
3954
3955 /**
3956 * @brief DMA UART Rx communication abort callback, when initiated by user by a call to
3957 * HAL_UART_AbortReceive_IT API (Abort only Rx transfer)
3958 * (This callback is executed at end of DMA Rx Abort procedure following user abort request,
3959 * and leads to user Rx Abort Complete callback execution).
3960 * @param hdma DMA handle.
3961 * @retval None
3962 */
UART_DMARxOnlyAbortCallback(DMA_HandleTypeDef * hdma)3963 static void UART_DMARxOnlyAbortCallback(DMA_HandleTypeDef *hdma)
3964 {
3965 UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
3966
3967 huart->RxXferCount = 0U;
3968
3969 /* Clear the Error flags in the ICR register */
3970 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
3971
3972 /* Discard the received data */
3973 __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
3974
3975 /* Restore huart->RxState to Ready */
3976 huart->RxState = HAL_UART_STATE_READY;
3977 huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
3978
3979 /* Call user Abort complete callback */
3980 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
3981 /* Call registered Abort Receive Complete Callback */
3982 huart->AbortReceiveCpltCallback(huart);
3983 #else
3984 /* Call legacy weak Abort Receive Complete Callback */
3985 HAL_UART_AbortReceiveCpltCallback(huart);
3986 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
3987 }
3988
3989 /**
3990 * @brief TX interrupt handler for 7 or 8 bits data word length .
3991 * @note Function is called under interruption only, once
3992 * interruptions have been enabled by HAL_UART_Transmit_IT().
3993 * @param huart UART handle.
3994 * @retval None
3995 */
UART_TxISR_8BIT(UART_HandleTypeDef * huart)3996 static void UART_TxISR_8BIT(UART_HandleTypeDef *huart)
3997 {
3998 /* Check that a Tx process is ongoing */
3999 if (huart->gState == HAL_UART_STATE_BUSY_TX)
4000 {
4001 if (huart->TxXferCount == 0U)
4002 {
4003 /* Disable the UART Transmit Data Register Empty Interrupt */
4004 ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_TXEIE_TXFNFIE);
4005
4006 /* Enable the UART Transmit Complete Interrupt */
4007 ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_TCIE);
4008 }
4009 else
4010 {
4011 huart->Instance->TDR = (uint8_t)(*huart->pTxBuffPtr & (uint8_t)0xFF);
4012 huart->pTxBuffPtr++;
4013 huart->TxXferCount--;
4014 }
4015 }
4016 }
4017
4018 /**
4019 * @brief TX interrupt handler for 9 bits data word length.
4020 * @note Function is called under interruption only, once
4021 * interruptions have been enabled by HAL_UART_Transmit_IT().
4022 * @param huart UART handle.
4023 * @retval None
4024 */
UART_TxISR_16BIT(UART_HandleTypeDef * huart)4025 static void UART_TxISR_16BIT(UART_HandleTypeDef *huart)
4026 {
4027 const uint16_t *tmp;
4028
4029 /* Check that a Tx process is ongoing */
4030 if (huart->gState == HAL_UART_STATE_BUSY_TX)
4031 {
4032 if (huart->TxXferCount == 0U)
4033 {
4034 /* Disable the UART Transmit Data Register Empty Interrupt */
4035 ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_TXEIE_TXFNFIE);
4036
4037 /* Enable the UART Transmit Complete Interrupt */
4038 ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_TCIE);
4039 }
4040 else
4041 {
4042 tmp = (const uint16_t *) huart->pTxBuffPtr;
4043 huart->Instance->TDR = (((uint32_t)(*tmp)) & 0x01FFUL);
4044 huart->pTxBuffPtr += 2U;
4045 huart->TxXferCount--;
4046 }
4047 }
4048 }
4049
4050 /**
4051 * @brief TX interrupt handler for 7 or 8 bits data word length and FIFO mode is enabled.
4052 * @note Function is called under interruption only, once
4053 * interruptions have been enabled by HAL_UART_Transmit_IT().
4054 * @param huart UART handle.
4055 * @retval None
4056 */
UART_TxISR_8BIT_FIFOEN(UART_HandleTypeDef * huart)4057 static void UART_TxISR_8BIT_FIFOEN(UART_HandleTypeDef *huart)
4058 {
4059 uint16_t nb_tx_data;
4060
4061 /* Check that a Tx process is ongoing */
4062 if (huart->gState == HAL_UART_STATE_BUSY_TX)
4063 {
4064 for (nb_tx_data = huart->NbTxDataToProcess ; nb_tx_data > 0U ; nb_tx_data--)
4065 {
4066 if (huart->TxXferCount == 0U)
4067 {
4068 /* Disable the TX FIFO threshold interrupt */
4069 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_TXFTIE);
4070
4071 /* Enable the UART Transmit Complete Interrupt */
4072 ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_TCIE);
4073
4074 break; /* force exit loop */
4075 }
4076 else if (READ_BIT(huart->Instance->ISR, USART_ISR_TXE_TXFNF) != 0U)
4077 {
4078 huart->Instance->TDR = (uint8_t)(*huart->pTxBuffPtr & (uint8_t)0xFF);
4079 huart->pTxBuffPtr++;
4080 huart->TxXferCount--;
4081 }
4082 else
4083 {
4084 /* Nothing to do */
4085 }
4086 }
4087 }
4088 }
4089
4090 /**
4091 * @brief TX interrupt handler for 9 bits data word length and FIFO mode is enabled.
4092 * @note Function is called under interruption only, once
4093 * interruptions have been enabled by HAL_UART_Transmit_IT().
4094 * @param huart UART handle.
4095 * @retval None
4096 */
UART_TxISR_16BIT_FIFOEN(UART_HandleTypeDef * huart)4097 static void UART_TxISR_16BIT_FIFOEN(UART_HandleTypeDef *huart)
4098 {
4099 const uint16_t *tmp;
4100 uint16_t nb_tx_data;
4101
4102 /* Check that a Tx process is ongoing */
4103 if (huart->gState == HAL_UART_STATE_BUSY_TX)
4104 {
4105 for (nb_tx_data = huart->NbTxDataToProcess ; nb_tx_data > 0U ; nb_tx_data--)
4106 {
4107 if (huart->TxXferCount == 0U)
4108 {
4109 /* Disable the TX FIFO threshold interrupt */
4110 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_TXFTIE);
4111
4112 /* Enable the UART Transmit Complete Interrupt */
4113 ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_TCIE);
4114
4115 break; /* force exit loop */
4116 }
4117 else if (READ_BIT(huart->Instance->ISR, USART_ISR_TXE_TXFNF) != 0U)
4118 {
4119 tmp = (const uint16_t *) huart->pTxBuffPtr;
4120 huart->Instance->TDR = (((uint32_t)(*tmp)) & 0x01FFUL);
4121 huart->pTxBuffPtr += 2U;
4122 huart->TxXferCount--;
4123 }
4124 else
4125 {
4126 /* Nothing to do */
4127 }
4128 }
4129 }
4130 }
4131
4132 /**
4133 * @brief Wrap up transmission in non-blocking mode.
4134 * @param huart pointer to a UART_HandleTypeDef structure that contains
4135 * the configuration information for the specified UART module.
4136 * @retval None
4137 */
UART_EndTransmit_IT(UART_HandleTypeDef * huart)4138 static void UART_EndTransmit_IT(UART_HandleTypeDef *huart)
4139 {
4140 /* Disable the UART Transmit Complete Interrupt */
4141 ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_TCIE);
4142
4143 /* Tx process is ended, restore huart->gState to Ready */
4144 huart->gState = HAL_UART_STATE_READY;
4145
4146 /* Cleat TxISR function pointer */
4147 huart->TxISR = NULL;
4148
4149 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
4150 /*Call registered Tx complete callback*/
4151 huart->TxCpltCallback(huart);
4152 #else
4153 /*Call legacy weak Tx complete callback*/
4154 HAL_UART_TxCpltCallback(huart);
4155 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
4156 }
4157
4158 /**
4159 * @brief RX interrupt handler for 7 or 8 bits data word length .
4160 * @param huart UART handle.
4161 * @retval None
4162 */
UART_RxISR_8BIT(UART_HandleTypeDef * huart)4163 static void UART_RxISR_8BIT(UART_HandleTypeDef *huart)
4164 {
4165 uint16_t uhMask = huart->Mask;
4166 uint16_t uhdata;
4167
4168 /* Check that a Rx process is ongoing */
4169 if (huart->RxState == HAL_UART_STATE_BUSY_RX)
4170 {
4171 uhdata = (uint16_t) READ_REG(huart->Instance->RDR);
4172 *huart->pRxBuffPtr = (uint8_t)(uhdata & (uint8_t)uhMask);
4173 huart->pRxBuffPtr++;
4174 huart->RxXferCount--;
4175
4176 if (huart->RxXferCount == 0U)
4177 {
4178 /* Disable the UART Parity Error Interrupt and RXNE interrupts */
4179 ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE_RXFNEIE | USART_CR1_PEIE));
4180
4181 /* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */
4182 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
4183
4184 /* Rx process is completed, restore huart->RxState to Ready */
4185 huart->RxState = HAL_UART_STATE_READY;
4186
4187 /* Clear RxISR function pointer */
4188 huart->RxISR = NULL;
4189
4190 /* Initialize type of RxEvent to Transfer Complete */
4191 huart->RxEventType = HAL_UART_RXEVENT_TC;
4192
4193 if (!(IS_LPUART_INSTANCE(huart->Instance)))
4194 {
4195 /* Check that USART RTOEN bit is set */
4196 if (READ_BIT(huart->Instance->CR2, USART_CR2_RTOEN) != 0U)
4197 {
4198 /* Enable the UART Receiver Timeout Interrupt */
4199 ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_RTOIE);
4200 }
4201 }
4202
4203 /* Check current reception Mode :
4204 If Reception till IDLE event has been selected : */
4205 if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
4206 {
4207 /* Set reception type to Standard */
4208 huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
4209
4210 /* Disable IDLE interrupt */
4211 ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_IDLEIE);
4212
4213 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_IDLE) == SET)
4214 {
4215 /* Clear IDLE Flag */
4216 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_IDLEF);
4217 }
4218
4219 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
4220 /*Call registered Rx Event callback*/
4221 huart->RxEventCallback(huart, huart->RxXferSize);
4222 #else
4223 /*Call legacy weak Rx Event callback*/
4224 HAL_UARTEx_RxEventCallback(huart, huart->RxXferSize);
4225 #endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
4226 }
4227 else
4228 {
4229 /* Standard reception API called */
4230 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
4231 /*Call registered Rx complete callback*/
4232 huart->RxCpltCallback(huart);
4233 #else
4234 /*Call legacy weak Rx complete callback*/
4235 HAL_UART_RxCpltCallback(huart);
4236 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
4237 }
4238 }
4239 }
4240 else
4241 {
4242 /* Clear RXNE interrupt flag */
4243 __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
4244 }
4245 }
4246
4247 /**
4248 * @brief RX interrupt handler for 9 bits data word length .
4249 * @note Function is called under interruption only, once
4250 * interruptions have been enabled by HAL_UART_Receive_IT()
4251 * @param huart UART handle.
4252 * @retval None
4253 */
UART_RxISR_16BIT(UART_HandleTypeDef * huart)4254 static void UART_RxISR_16BIT(UART_HandleTypeDef *huart)
4255 {
4256 uint16_t *tmp;
4257 uint16_t uhMask = huart->Mask;
4258 uint16_t uhdata;
4259
4260 /* Check that a Rx process is ongoing */
4261 if (huart->RxState == HAL_UART_STATE_BUSY_RX)
4262 {
4263 uhdata = (uint16_t) READ_REG(huart->Instance->RDR);
4264 tmp = (uint16_t *) huart->pRxBuffPtr ;
4265 *tmp = (uint16_t)(uhdata & uhMask);
4266 huart->pRxBuffPtr += 2U;
4267 huart->RxXferCount--;
4268
4269 if (huart->RxXferCount == 0U)
4270 {
4271 /* Disable the UART Parity Error Interrupt and RXNE interrupt*/
4272 ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE_RXFNEIE | USART_CR1_PEIE));
4273
4274 /* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */
4275 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
4276
4277 /* Rx process is completed, restore huart->RxState to Ready */
4278 huart->RxState = HAL_UART_STATE_READY;
4279
4280 /* Clear RxISR function pointer */
4281 huart->RxISR = NULL;
4282
4283 /* Initialize type of RxEvent to Transfer Complete */
4284 huart->RxEventType = HAL_UART_RXEVENT_TC;
4285
4286 if (!(IS_LPUART_INSTANCE(huart->Instance)))
4287 {
4288 /* Check that USART RTOEN bit is set */
4289 if (READ_BIT(huart->Instance->CR2, USART_CR2_RTOEN) != 0U)
4290 {
4291 /* Enable the UART Receiver Timeout Interrupt */
4292 ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_RTOIE);
4293 }
4294 }
4295
4296 /* Check current reception Mode :
4297 If Reception till IDLE event has been selected : */
4298 if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
4299 {
4300 /* Set reception type to Standard */
4301 huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
4302
4303 /* Disable IDLE interrupt */
4304 ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_IDLEIE);
4305
4306 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_IDLE) == SET)
4307 {
4308 /* Clear IDLE Flag */
4309 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_IDLEF);
4310 }
4311
4312 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
4313 /*Call registered Rx Event callback*/
4314 huart->RxEventCallback(huart, huart->RxXferSize);
4315 #else
4316 /*Call legacy weak Rx Event callback*/
4317 HAL_UARTEx_RxEventCallback(huart, huart->RxXferSize);
4318 #endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
4319 }
4320 else
4321 {
4322 /* Standard reception API called */
4323 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
4324 /*Call registered Rx complete callback*/
4325 huart->RxCpltCallback(huart);
4326 #else
4327 /*Call legacy weak Rx complete callback*/
4328 HAL_UART_RxCpltCallback(huart);
4329 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
4330 }
4331 }
4332 }
4333 else
4334 {
4335 /* Clear RXNE interrupt flag */
4336 __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
4337 }
4338 }
4339
4340 /**
4341 * @brief RX interrupt handler for 7 or 8 bits data word length and FIFO mode is enabled.
4342 * @note Function is called under interruption only, once
4343 * interruptions have been enabled by HAL_UART_Receive_IT()
4344 * @param huart UART handle.
4345 * @retval None
4346 */
UART_RxISR_8BIT_FIFOEN(UART_HandleTypeDef * huart)4347 static void UART_RxISR_8BIT_FIFOEN(UART_HandleTypeDef *huart)
4348 {
4349 uint16_t uhMask = huart->Mask;
4350 uint16_t uhdata;
4351 uint16_t nb_rx_data;
4352 uint16_t rxdatacount;
4353 uint32_t isrflags = READ_REG(huart->Instance->ISR);
4354 uint32_t cr1its = READ_REG(huart->Instance->CR1);
4355 uint32_t cr3its = READ_REG(huart->Instance->CR3);
4356
4357 /* Check that a Rx process is ongoing */
4358 if (huart->RxState == HAL_UART_STATE_BUSY_RX)
4359 {
4360 nb_rx_data = huart->NbRxDataToProcess;
4361 while ((nb_rx_data > 0U) && ((isrflags & USART_ISR_RXNE_RXFNE) != 0U))
4362 {
4363 uhdata = (uint16_t) READ_REG(huart->Instance->RDR);
4364 *huart->pRxBuffPtr = (uint8_t)(uhdata & (uint8_t)uhMask);
4365 huart->pRxBuffPtr++;
4366 huart->RxXferCount--;
4367 isrflags = READ_REG(huart->Instance->ISR);
4368
4369 /* If some non blocking errors occurred */
4370 if ((isrflags & (USART_ISR_PE | USART_ISR_FE | USART_ISR_NE)) != 0U)
4371 {
4372 /* UART parity error interrupt occurred -------------------------------------*/
4373 if (((isrflags & USART_ISR_PE) != 0U) && ((cr1its & USART_CR1_PEIE) != 0U))
4374 {
4375 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_PEF);
4376
4377 huart->ErrorCode |= HAL_UART_ERROR_PE;
4378 }
4379
4380 /* UART frame error interrupt occurred --------------------------------------*/
4381 if (((isrflags & USART_ISR_FE) != 0U) && ((cr3its & USART_CR3_EIE) != 0U))
4382 {
4383 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_FEF);
4384
4385 huart->ErrorCode |= HAL_UART_ERROR_FE;
4386 }
4387
4388 /* UART noise error interrupt occurred --------------------------------------*/
4389 if (((isrflags & USART_ISR_NE) != 0U) && ((cr3its & USART_CR3_EIE) != 0U))
4390 {
4391 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_NEF);
4392
4393 huart->ErrorCode |= HAL_UART_ERROR_NE;
4394 }
4395
4396 /* Call UART Error Call back function if need be ----------------------------*/
4397 if (huart->ErrorCode != HAL_UART_ERROR_NONE)
4398 {
4399 /* Non Blocking error : transfer could go on.
4400 Error is notified to user through user error callback */
4401 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
4402 /*Call registered error callback*/
4403 huart->ErrorCallback(huart);
4404 #else
4405 /*Call legacy weak error callback*/
4406 HAL_UART_ErrorCallback(huart);
4407 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
4408 huart->ErrorCode = HAL_UART_ERROR_NONE;
4409 }
4410 }
4411
4412 if (huart->RxXferCount == 0U)
4413 {
4414 /* Disable the UART Parity Error Interrupt and RXFT interrupt*/
4415 ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE);
4416
4417 /* Disable the UART Error Interrupt: (Frame error, noise error, overrun error)
4418 and RX FIFO Threshold interrupt */
4419 ATOMIC_CLEAR_BIT(huart->Instance->CR3, (USART_CR3_EIE | USART_CR3_RXFTIE));
4420
4421 /* Rx process is completed, restore huart->RxState to Ready */
4422 huart->RxState = HAL_UART_STATE_READY;
4423
4424 /* Clear RxISR function pointer */
4425 huart->RxISR = NULL;
4426
4427 /* Initialize type of RxEvent to Transfer Complete */
4428 huart->RxEventType = HAL_UART_RXEVENT_TC;
4429
4430 if (!(IS_LPUART_INSTANCE(huart->Instance)))
4431 {
4432 /* Check that USART RTOEN bit is set */
4433 if (READ_BIT(huart->Instance->CR2, USART_CR2_RTOEN) != 0U)
4434 {
4435 /* Enable the UART Receiver Timeout Interrupt */
4436 ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_RTOIE);
4437 }
4438 }
4439
4440 /* Check current reception Mode :
4441 If Reception till IDLE event has been selected : */
4442 if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
4443 {
4444 /* Set reception type to Standard */
4445 huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
4446
4447 /* Disable IDLE interrupt */
4448 ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_IDLEIE);
4449
4450 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_IDLE) == SET)
4451 {
4452 /* Clear IDLE Flag */
4453 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_IDLEF);
4454 }
4455
4456 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
4457 /*Call registered Rx Event callback*/
4458 huart->RxEventCallback(huart, huart->RxXferSize);
4459 #else
4460 /*Call legacy weak Rx Event callback*/
4461 HAL_UARTEx_RxEventCallback(huart, huart->RxXferSize);
4462 #endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
4463 }
4464 else
4465 {
4466 /* Standard reception API called */
4467 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
4468 /*Call registered Rx complete callback*/
4469 huart->RxCpltCallback(huart);
4470 #else
4471 /*Call legacy weak Rx complete callback*/
4472 HAL_UART_RxCpltCallback(huart);
4473 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
4474 }
4475 }
4476 }
4477
4478 /* When remaining number of bytes to receive is less than the RX FIFO
4479 threshold, next incoming frames are processed as if FIFO mode was
4480 disabled (i.e. one interrupt per received frame).
4481 */
4482 rxdatacount = huart->RxXferCount;
4483 if ((rxdatacount != 0U) && (rxdatacount < huart->NbRxDataToProcess))
4484 {
4485 /* Disable the UART RXFT interrupt*/
4486 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_RXFTIE);
4487
4488 /* Update the RxISR function pointer */
4489 huart->RxISR = UART_RxISR_8BIT;
4490
4491 /* Enable the UART Data Register Not Empty interrupt */
4492 ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_RXNEIE_RXFNEIE);
4493 }
4494 }
4495 else
4496 {
4497 /* Clear RXNE interrupt flag */
4498 __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
4499 }
4500 }
4501
4502 /**
4503 * @brief RX interrupt handler for 9 bits data word length and FIFO mode is enabled.
4504 * @note Function is called under interruption only, once
4505 * interruptions have been enabled by HAL_UART_Receive_IT()
4506 * @param huart UART handle.
4507 * @retval None
4508 */
UART_RxISR_16BIT_FIFOEN(UART_HandleTypeDef * huart)4509 static void UART_RxISR_16BIT_FIFOEN(UART_HandleTypeDef *huart)
4510 {
4511 uint16_t *tmp;
4512 uint16_t uhMask = huart->Mask;
4513 uint16_t uhdata;
4514 uint16_t nb_rx_data;
4515 uint16_t rxdatacount;
4516 uint32_t isrflags = READ_REG(huart->Instance->ISR);
4517 uint32_t cr1its = READ_REG(huart->Instance->CR1);
4518 uint32_t cr3its = READ_REG(huart->Instance->CR3);
4519
4520 /* Check that a Rx process is ongoing */
4521 if (huart->RxState == HAL_UART_STATE_BUSY_RX)
4522 {
4523 nb_rx_data = huart->NbRxDataToProcess;
4524 while ((nb_rx_data > 0U) && ((isrflags & USART_ISR_RXNE_RXFNE) != 0U))
4525 {
4526 uhdata = (uint16_t) READ_REG(huart->Instance->RDR);
4527 tmp = (uint16_t *) huart->pRxBuffPtr ;
4528 *tmp = (uint16_t)(uhdata & uhMask);
4529 huart->pRxBuffPtr += 2U;
4530 huart->RxXferCount--;
4531 isrflags = READ_REG(huart->Instance->ISR);
4532
4533 /* If some non blocking errors occurred */
4534 if ((isrflags & (USART_ISR_PE | USART_ISR_FE | USART_ISR_NE)) != 0U)
4535 {
4536 /* UART parity error interrupt occurred -------------------------------------*/
4537 if (((isrflags & USART_ISR_PE) != 0U) && ((cr1its & USART_CR1_PEIE) != 0U))
4538 {
4539 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_PEF);
4540
4541 huart->ErrorCode |= HAL_UART_ERROR_PE;
4542 }
4543
4544 /* UART frame error interrupt occurred --------------------------------------*/
4545 if (((isrflags & USART_ISR_FE) != 0U) && ((cr3its & USART_CR3_EIE) != 0U))
4546 {
4547 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_FEF);
4548
4549 huart->ErrorCode |= HAL_UART_ERROR_FE;
4550 }
4551
4552 /* UART noise error interrupt occurred --------------------------------------*/
4553 if (((isrflags & USART_ISR_NE) != 0U) && ((cr3its & USART_CR3_EIE) != 0U))
4554 {
4555 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_NEF);
4556
4557 huart->ErrorCode |= HAL_UART_ERROR_NE;
4558 }
4559
4560 /* Call UART Error Call back function if need be ----------------------------*/
4561 if (huart->ErrorCode != HAL_UART_ERROR_NONE)
4562 {
4563 /* Non Blocking error : transfer could go on.
4564 Error is notified to user through user error callback */
4565 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
4566 /*Call registered error callback*/
4567 huart->ErrorCallback(huart);
4568 #else
4569 /*Call legacy weak error callback*/
4570 HAL_UART_ErrorCallback(huart);
4571 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
4572 huart->ErrorCode = HAL_UART_ERROR_NONE;
4573 }
4574 }
4575
4576 if (huart->RxXferCount == 0U)
4577 {
4578 /* Disable the UART Parity Error Interrupt and RXFT interrupt*/
4579 ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE);
4580
4581 /* Disable the UART Error Interrupt: (Frame error, noise error, overrun error)
4582 and RX FIFO Threshold interrupt */
4583 ATOMIC_CLEAR_BIT(huart->Instance->CR3, (USART_CR3_EIE | USART_CR3_RXFTIE));
4584
4585 /* Rx process is completed, restore huart->RxState to Ready */
4586 huart->RxState = HAL_UART_STATE_READY;
4587
4588 /* Clear RxISR function pointer */
4589 huart->RxISR = NULL;
4590
4591 /* Initialize type of RxEvent to Transfer Complete */
4592 huart->RxEventType = HAL_UART_RXEVENT_TC;
4593
4594 if (!(IS_LPUART_INSTANCE(huart->Instance)))
4595 {
4596 /* Check that USART RTOEN bit is set */
4597 if (READ_BIT(huart->Instance->CR2, USART_CR2_RTOEN) != 0U)
4598 {
4599 /* Enable the UART Receiver Timeout Interrupt */
4600 ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_RTOIE);
4601 }
4602 }
4603
4604 /* Check current reception Mode :
4605 If Reception till IDLE event has been selected : */
4606 if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
4607 {
4608 /* Set reception type to Standard */
4609 huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
4610
4611 /* Disable IDLE interrupt */
4612 ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_IDLEIE);
4613
4614 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_IDLE) == SET)
4615 {
4616 /* Clear IDLE Flag */
4617 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_IDLEF);
4618 }
4619
4620 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
4621 /*Call registered Rx Event callback*/
4622 huart->RxEventCallback(huart, huart->RxXferSize);
4623 #else
4624 /*Call legacy weak Rx Event callback*/
4625 HAL_UARTEx_RxEventCallback(huart, huart->RxXferSize);
4626 #endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
4627 }
4628 else
4629 {
4630 /* Standard reception API called */
4631 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
4632 /*Call registered Rx complete callback*/
4633 huart->RxCpltCallback(huart);
4634 #else
4635 /*Call legacy weak Rx complete callback*/
4636 HAL_UART_RxCpltCallback(huart);
4637 #endif /* USE_HAL_UART_REGISTER_CALLBACKS */
4638 }
4639 }
4640 }
4641
4642 /* When remaining number of bytes to receive is less than the RX FIFO
4643 threshold, next incoming frames are processed as if FIFO mode was
4644 disabled (i.e. one interrupt per received frame).
4645 */
4646 rxdatacount = huart->RxXferCount;
4647 if ((rxdatacount != 0U) && (rxdatacount < huart->NbRxDataToProcess))
4648 {
4649 /* Disable the UART RXFT interrupt*/
4650 ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_RXFTIE);
4651
4652 /* Update the RxISR function pointer */
4653 huart->RxISR = UART_RxISR_16BIT;
4654
4655 /* Enable the UART Data Register Not Empty interrupt */
4656 ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_RXNEIE_RXFNEIE);
4657 }
4658 }
4659 else
4660 {
4661 /* Clear RXNE interrupt flag */
4662 __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
4663 }
4664 }
4665
4666 /**
4667 * @}
4668 */
4669
4670 #endif /* HAL_UART_MODULE_ENABLED */
4671 /**
4672 * @}
4673 */
4674
4675 /**
4676 * @}
4677 */
4678
4679
