1 /**
2 ******************************************************************************
3 * @file stm32f4xx_ll_dma.c
4 * @author MCD Application Team
5 * @brief DMA LL module driver.
6 ******************************************************************************
7 * @attention
8 *
9 * Copyright (c) 2017 STMicroelectronics.
10 * All rights reserved.
11 *
12 * This software is licensed under terms that can be found in the LICENSE file in
13 * the root directory of this software component.
14 * If no LICENSE file comes with this software, it is provided AS-IS.
15 *
16 ******************************************************************************
17 */
18 #if defined(USE_FULL_LL_DRIVER)
19
20 /* Includes ------------------------------------------------------------------*/
21 #include "stm32f4xx_ll_dma.h"
22 #include "stm32f4xx_ll_bus.h"
23 #ifdef USE_FULL_ASSERT
24 #include "stm32_assert.h"
25 #else
26 #define assert_param(expr) ((void)0U)
27 #endif
28
29 /** @addtogroup STM32F4xx_LL_Driver
30 * @{
31 */
32
33 #if defined (DMA1) || defined (DMA2)
34
35 /** @defgroup DMA_LL DMA
36 * @{
37 */
38
39 /* Private types -------------------------------------------------------------*/
40 /* Private variables ---------------------------------------------------------*/
41 /* Private constants ---------------------------------------------------------*/
42 /* Private macros ------------------------------------------------------------*/
43 /** @addtogroup DMA_LL_Private_Macros
44 * @{
45 */
46 #define IS_LL_DMA_DIRECTION(__VALUE__) (((__VALUE__) == LL_DMA_DIRECTION_PERIPH_TO_MEMORY) || \
47 ((__VALUE__) == LL_DMA_DIRECTION_MEMORY_TO_PERIPH) || \
48 ((__VALUE__) == LL_DMA_DIRECTION_MEMORY_TO_MEMORY))
49
50 #define IS_LL_DMA_MODE(__VALUE__) (((__VALUE__) == LL_DMA_MODE_NORMAL) || \
51 ((__VALUE__) == LL_DMA_MODE_CIRCULAR) || \
52 ((__VALUE__) == LL_DMA_MODE_PFCTRL))
53
54 #define IS_LL_DMA_PERIPHINCMODE(__VALUE__) (((__VALUE__) == LL_DMA_PERIPH_INCREMENT) || \
55 ((__VALUE__) == LL_DMA_PERIPH_NOINCREMENT))
56
57 #define IS_LL_DMA_MEMORYINCMODE(__VALUE__) (((__VALUE__) == LL_DMA_MEMORY_INCREMENT) || \
58 ((__VALUE__) == LL_DMA_MEMORY_NOINCREMENT))
59
60 #define IS_LL_DMA_PERIPHDATASIZE(__VALUE__) (((__VALUE__) == LL_DMA_PDATAALIGN_BYTE) || \
61 ((__VALUE__) == LL_DMA_PDATAALIGN_HALFWORD) || \
62 ((__VALUE__) == LL_DMA_PDATAALIGN_WORD))
63
64 #define IS_LL_DMA_MEMORYDATASIZE(__VALUE__) (((__VALUE__) == LL_DMA_MDATAALIGN_BYTE) || \
65 ((__VALUE__) == LL_DMA_MDATAALIGN_HALFWORD) || \
66 ((__VALUE__) == LL_DMA_MDATAALIGN_WORD))
67
68 #define IS_LL_DMA_NBDATA(__VALUE__) ((__VALUE__) <= 0x0000FFFFU)
69
70 #define IS_LL_DMA_CHANNEL(__VALUE__) (((__VALUE__) == LL_DMA_CHANNEL_0) || \
71 ((__VALUE__) == LL_DMA_CHANNEL_1) || \
72 ((__VALUE__) == LL_DMA_CHANNEL_2) || \
73 ((__VALUE__) == LL_DMA_CHANNEL_3) || \
74 ((__VALUE__) == LL_DMA_CHANNEL_4) || \
75 ((__VALUE__) == LL_DMA_CHANNEL_5) || \
76 ((__VALUE__) == LL_DMA_CHANNEL_6) || \
77 ((__VALUE__) == LL_DMA_CHANNEL_7))
78
79 #define IS_LL_DMA_PRIORITY(__VALUE__) (((__VALUE__) == LL_DMA_PRIORITY_LOW) || \
80 ((__VALUE__) == LL_DMA_PRIORITY_MEDIUM) || \
81 ((__VALUE__) == LL_DMA_PRIORITY_HIGH) || \
82 ((__VALUE__) == LL_DMA_PRIORITY_VERYHIGH))
83
84 #define IS_LL_DMA_ALL_STREAM_INSTANCE(INSTANCE, STREAM) ((((INSTANCE) == DMA1) && \
85 (((STREAM) == LL_DMA_STREAM_0) || \
86 ((STREAM) == LL_DMA_STREAM_1) || \
87 ((STREAM) == LL_DMA_STREAM_2) || \
88 ((STREAM) == LL_DMA_STREAM_3) || \
89 ((STREAM) == LL_DMA_STREAM_4) || \
90 ((STREAM) == LL_DMA_STREAM_5) || \
91 ((STREAM) == LL_DMA_STREAM_6) || \
92 ((STREAM) == LL_DMA_STREAM_7) || \
93 ((STREAM) == LL_DMA_STREAM_ALL))) ||\
94 (((INSTANCE) == DMA2) && \
95 (((STREAM) == LL_DMA_STREAM_0) || \
96 ((STREAM) == LL_DMA_STREAM_1) || \
97 ((STREAM) == LL_DMA_STREAM_2) || \
98 ((STREAM) == LL_DMA_STREAM_3) || \
99 ((STREAM) == LL_DMA_STREAM_4) || \
100 ((STREAM) == LL_DMA_STREAM_5) || \
101 ((STREAM) == LL_DMA_STREAM_6) || \
102 ((STREAM) == LL_DMA_STREAM_7) || \
103 ((STREAM) == LL_DMA_STREAM_ALL))))
104
105 #define IS_LL_DMA_FIFO_MODE_STATE(STATE) (((STATE) == LL_DMA_FIFOMODE_DISABLE ) || \
106 ((STATE) == LL_DMA_FIFOMODE_ENABLE))
107
108 #define IS_LL_DMA_FIFO_THRESHOLD(THRESHOLD) (((THRESHOLD) == LL_DMA_FIFOTHRESHOLD_1_4) || \
109 ((THRESHOLD) == LL_DMA_FIFOTHRESHOLD_1_2) || \
110 ((THRESHOLD) == LL_DMA_FIFOTHRESHOLD_3_4) || \
111 ((THRESHOLD) == LL_DMA_FIFOTHRESHOLD_FULL))
112
113 #define IS_LL_DMA_MEMORY_BURST(BURST) (((BURST) == LL_DMA_MBURST_SINGLE) || \
114 ((BURST) == LL_DMA_MBURST_INC4) || \
115 ((BURST) == LL_DMA_MBURST_INC8) || \
116 ((BURST) == LL_DMA_MBURST_INC16))
117
118 #define IS_LL_DMA_PERIPHERAL_BURST(BURST) (((BURST) == LL_DMA_PBURST_SINGLE) || \
119 ((BURST) == LL_DMA_PBURST_INC4) || \
120 ((BURST) == LL_DMA_PBURST_INC8) || \
121 ((BURST) == LL_DMA_PBURST_INC16))
122
123 /**
124 * @}
125 */
126
127 /* Private function prototypes -----------------------------------------------*/
128
129 /* Exported functions --------------------------------------------------------*/
130 /** @addtogroup DMA_LL_Exported_Functions
131 * @{
132 */
133
134 /** @addtogroup DMA_LL_EF_Init
135 * @{
136 */
137
138 /**
139 * @brief De-initialize the DMA registers to their default reset values.
140 * @param DMAx DMAx Instance
141 * @param Stream This parameter can be one of the following values:
142 * @arg @ref LL_DMA_STREAM_0
143 * @arg @ref LL_DMA_STREAM_1
144 * @arg @ref LL_DMA_STREAM_2
145 * @arg @ref LL_DMA_STREAM_3
146 * @arg @ref LL_DMA_STREAM_4
147 * @arg @ref LL_DMA_STREAM_5
148 * @arg @ref LL_DMA_STREAM_6
149 * @arg @ref LL_DMA_STREAM_7
150 * @arg @ref LL_DMA_STREAM_ALL
151 * @retval An ErrorStatus enumeration value:
152 * - SUCCESS: DMA registers are de-initialized
153 * - ERROR: DMA registers are not de-initialized
154 */
LL_DMA_DeInit(DMA_TypeDef * DMAx,uint32_t Stream)155 uint32_t LL_DMA_DeInit(DMA_TypeDef *DMAx, uint32_t Stream)
156 {
157 DMA_Stream_TypeDef *tmp = (DMA_Stream_TypeDef *)DMA1_Stream0;
158 ErrorStatus status = SUCCESS;
159
160 /* Check the DMA Instance DMAx and Stream parameters*/
161 assert_param(IS_LL_DMA_ALL_STREAM_INSTANCE(DMAx, Stream));
162
163 if (Stream == LL_DMA_STREAM_ALL)
164 {
165 if (DMAx == DMA1)
166 {
167 /* Force reset of DMA clock */
168 LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_DMA1);
169
170 /* Release reset of DMA clock */
171 LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_DMA1);
172 }
173 else if (DMAx == DMA2)
174 {
175 /* Force reset of DMA clock */
176 LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_DMA2);
177
178 /* Release reset of DMA clock */
179 LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_DMA2);
180 }
181 else
182 {
183 status = ERROR;
184 }
185 }
186 else
187 {
188 /* Disable the selected Stream */
189 LL_DMA_DisableStream(DMAx,Stream);
190
191 /* Get the DMA Stream Instance */
192 tmp = (DMA_Stream_TypeDef *)(__LL_DMA_GET_STREAM_INSTANCE(DMAx, Stream));
193
194 /* Reset DMAx_Streamy configuration register */
195 LL_DMA_WriteReg(tmp, CR, 0U);
196
197 /* Reset DMAx_Streamy remaining bytes register */
198 LL_DMA_WriteReg(tmp, NDTR, 0U);
199
200 /* Reset DMAx_Streamy peripheral address register */
201 LL_DMA_WriteReg(tmp, PAR, 0U);
202
203 /* Reset DMAx_Streamy memory address register */
204 LL_DMA_WriteReg(tmp, M0AR, 0U);
205
206 /* Reset DMAx_Streamy memory address register */
207 LL_DMA_WriteReg(tmp, M1AR, 0U);
208
209 /* Reset DMAx_Streamy FIFO control register */
210 LL_DMA_WriteReg(tmp, FCR, 0x00000021U);
211
212 /* Reset Channel register field for DMAx Stream*/
213 LL_DMA_SetChannelSelection(DMAx, Stream, LL_DMA_CHANNEL_0);
214
215 if(Stream == LL_DMA_STREAM_0)
216 {
217 /* Reset the Stream0 pending flags */
218 DMAx->LIFCR = 0x0000003FU;
219 }
220 else if(Stream == LL_DMA_STREAM_1)
221 {
222 /* Reset the Stream1 pending flags */
223 DMAx->LIFCR = 0x00000F40U;
224 }
225 else if(Stream == LL_DMA_STREAM_2)
226 {
227 /* Reset the Stream2 pending flags */
228 DMAx->LIFCR = 0x003F0000U;
229 }
230 else if(Stream == LL_DMA_STREAM_3)
231 {
232 /* Reset the Stream3 pending flags */
233 DMAx->LIFCR = 0x0F400000U;
234 }
235 else if(Stream == LL_DMA_STREAM_4)
236 {
237 /* Reset the Stream4 pending flags */
238 DMAx->HIFCR = 0x0000003FU;
239 }
240 else if(Stream == LL_DMA_STREAM_5)
241 {
242 /* Reset the Stream5 pending flags */
243 DMAx->HIFCR = 0x00000F40U;
244 }
245 else if(Stream == LL_DMA_STREAM_6)
246 {
247 /* Reset the Stream6 pending flags */
248 DMAx->HIFCR = 0x003F0000U;
249 }
250 else if(Stream == LL_DMA_STREAM_7)
251 {
252 /* Reset the Stream7 pending flags */
253 DMAx->HIFCR = 0x0F400000U;
254 }
255 else
256 {
257 status = ERROR;
258 }
259 }
260
261 return status;
262 }
263
264 /**
265 * @brief Initialize the DMA registers according to the specified parameters in DMA_InitStruct.
266 * @note To convert DMAx_Streamy Instance to DMAx Instance and Streamy, use helper macros :
267 * @arg @ref __LL_DMA_GET_INSTANCE
268 * @arg @ref __LL_DMA_GET_STREAM
269 * @param DMAx DMAx Instance
270 * @param Stream This parameter can be one of the following values:
271 * @arg @ref LL_DMA_STREAM_0
272 * @arg @ref LL_DMA_STREAM_1
273 * @arg @ref LL_DMA_STREAM_2
274 * @arg @ref LL_DMA_STREAM_3
275 * @arg @ref LL_DMA_STREAM_4
276 * @arg @ref LL_DMA_STREAM_5
277 * @arg @ref LL_DMA_STREAM_6
278 * @arg @ref LL_DMA_STREAM_7
279 * @param DMA_InitStruct pointer to a @ref LL_DMA_InitTypeDef structure.
280 * @retval An ErrorStatus enumeration value:
281 * - SUCCESS: DMA registers are initialized
282 * - ERROR: Not applicable
283 */
LL_DMA_Init(DMA_TypeDef * DMAx,uint32_t Stream,LL_DMA_InitTypeDef * DMA_InitStruct)284 uint32_t LL_DMA_Init(DMA_TypeDef *DMAx, uint32_t Stream, LL_DMA_InitTypeDef *DMA_InitStruct)
285 {
286 /* Check the DMA Instance DMAx and Stream parameters*/
287 assert_param(IS_LL_DMA_ALL_STREAM_INSTANCE(DMAx, Stream));
288
289 /* Check the DMA parameters from DMA_InitStruct */
290 assert_param(IS_LL_DMA_DIRECTION(DMA_InitStruct->Direction));
291 assert_param(IS_LL_DMA_MODE(DMA_InitStruct->Mode));
292 assert_param(IS_LL_DMA_PERIPHINCMODE(DMA_InitStruct->PeriphOrM2MSrcIncMode));
293 assert_param(IS_LL_DMA_MEMORYINCMODE(DMA_InitStruct->MemoryOrM2MDstIncMode));
294 assert_param(IS_LL_DMA_PERIPHDATASIZE(DMA_InitStruct->PeriphOrM2MSrcDataSize));
295 assert_param(IS_LL_DMA_MEMORYDATASIZE(DMA_InitStruct->MemoryOrM2MDstDataSize));
296 assert_param(IS_LL_DMA_NBDATA(DMA_InitStruct->NbData));
297 assert_param(IS_LL_DMA_CHANNEL(DMA_InitStruct->Channel));
298 assert_param(IS_LL_DMA_PRIORITY(DMA_InitStruct->Priority));
299 assert_param(IS_LL_DMA_FIFO_MODE_STATE(DMA_InitStruct->FIFOMode));
300 /* Check the memory burst, peripheral burst and FIFO threshold parameters only
301 when FIFO mode is enabled */
302 if(DMA_InitStruct->FIFOMode != LL_DMA_FIFOMODE_DISABLE)
303 {
304 assert_param(IS_LL_DMA_FIFO_THRESHOLD(DMA_InitStruct->FIFOThreshold));
305 assert_param(IS_LL_DMA_MEMORY_BURST(DMA_InitStruct->MemBurst));
306 assert_param(IS_LL_DMA_PERIPHERAL_BURST(DMA_InitStruct->PeriphBurst));
307 }
308
309 /*---------------------------- DMAx SxCR Configuration ------------------------
310 * Configure DMAx_Streamy: data transfer direction, data transfer mode,
311 * peripheral and memory increment mode,
312 * data size alignment and priority level with parameters :
313 * - Direction: DMA_SxCR_DIR[1:0] bits
314 * - Mode: DMA_SxCR_CIRC bit
315 * - PeriphOrM2MSrcIncMode: DMA_SxCR_PINC bit
316 * - MemoryOrM2MDstIncMode: DMA_SxCR_MINC bit
317 * - PeriphOrM2MSrcDataSize: DMA_SxCR_PSIZE[1:0] bits
318 * - MemoryOrM2MDstDataSize: DMA_SxCR_MSIZE[1:0] bits
319 * - Priority: DMA_SxCR_PL[1:0] bits
320 */
321 LL_DMA_ConfigTransfer(DMAx, Stream, DMA_InitStruct->Direction | \
322 DMA_InitStruct->Mode | \
323 DMA_InitStruct->PeriphOrM2MSrcIncMode | \
324 DMA_InitStruct->MemoryOrM2MDstIncMode | \
325 DMA_InitStruct->PeriphOrM2MSrcDataSize | \
326 DMA_InitStruct->MemoryOrM2MDstDataSize | \
327 DMA_InitStruct->Priority
328 );
329
330 if(DMA_InitStruct->FIFOMode != LL_DMA_FIFOMODE_DISABLE)
331 {
332 /*---------------------------- DMAx SxFCR Configuration ------------------------
333 * Configure DMAx_Streamy: fifo mode and fifo threshold with parameters :
334 * - FIFOMode: DMA_SxFCR_DMDIS bit
335 * - FIFOThreshold: DMA_SxFCR_FTH[1:0] bits
336 */
337 LL_DMA_ConfigFifo(DMAx, Stream, DMA_InitStruct->FIFOMode, DMA_InitStruct->FIFOThreshold);
338
339 /*---------------------------- DMAx SxCR Configuration --------------------------
340 * Configure DMAx_Streamy: memory burst transfer with parameters :
341 * - MemBurst: DMA_SxCR_MBURST[1:0] bits
342 */
343 LL_DMA_SetMemoryBurstxfer(DMAx,Stream,DMA_InitStruct->MemBurst);
344
345 /*---------------------------- DMAx SxCR Configuration --------------------------
346 * Configure DMAx_Streamy: peripheral burst transfer with parameters :
347 * - PeriphBurst: DMA_SxCR_PBURST[1:0] bits
348 */
349 LL_DMA_SetPeriphBurstxfer(DMAx,Stream,DMA_InitStruct->PeriphBurst);
350 }
351
352 /*-------------------------- DMAx SxM0AR Configuration --------------------------
353 * Configure the memory or destination base address with parameter :
354 * - MemoryOrM2MDstAddress: DMA_SxM0AR_M0A[31:0] bits
355 */
356 LL_DMA_SetMemoryAddress(DMAx, Stream, DMA_InitStruct->MemoryOrM2MDstAddress);
357
358 /*-------------------------- DMAx SxPAR Configuration ---------------------------
359 * Configure the peripheral or source base address with parameter :
360 * - PeriphOrM2MSrcAddress: DMA_SxPAR_PA[31:0] bits
361 */
362 LL_DMA_SetPeriphAddress(DMAx, Stream, DMA_InitStruct->PeriphOrM2MSrcAddress);
363
364 /*--------------------------- DMAx SxNDTR Configuration -------------------------
365 * Configure the peripheral base address with parameter :
366 * - NbData: DMA_SxNDT[15:0] bits
367 */
368 LL_DMA_SetDataLength(DMAx, Stream, DMA_InitStruct->NbData);
369
370 /*--------------------------- DMA SxCR_CHSEL Configuration ----------------------
371 * Configure the peripheral base address with parameter :
372 * - PeriphRequest: DMA_SxCR_CHSEL[2:0] bits
373 */
374 LL_DMA_SetChannelSelection(DMAx, Stream, DMA_InitStruct->Channel);
375
376 return SUCCESS;
377 }
378
379 /**
380 * @brief Set each @ref LL_DMA_InitTypeDef field to default value.
381 * @param DMA_InitStruct Pointer to a @ref LL_DMA_InitTypeDef structure.
382 * @retval None
383 */
LL_DMA_StructInit(LL_DMA_InitTypeDef * DMA_InitStruct)384 void LL_DMA_StructInit(LL_DMA_InitTypeDef *DMA_InitStruct)
385 {
386 /* Set DMA_InitStruct fields to default values */
387 DMA_InitStruct->PeriphOrM2MSrcAddress = 0x00000000U;
388 DMA_InitStruct->MemoryOrM2MDstAddress = 0x00000000U;
389 DMA_InitStruct->Direction = LL_DMA_DIRECTION_PERIPH_TO_MEMORY;
390 DMA_InitStruct->Mode = LL_DMA_MODE_NORMAL;
391 DMA_InitStruct->PeriphOrM2MSrcIncMode = LL_DMA_PERIPH_NOINCREMENT;
392 DMA_InitStruct->MemoryOrM2MDstIncMode = LL_DMA_MEMORY_NOINCREMENT;
393 DMA_InitStruct->PeriphOrM2MSrcDataSize = LL_DMA_PDATAALIGN_BYTE;
394 DMA_InitStruct->MemoryOrM2MDstDataSize = LL_DMA_MDATAALIGN_BYTE;
395 DMA_InitStruct->NbData = 0x00000000U;
396 DMA_InitStruct->Channel = LL_DMA_CHANNEL_0;
397 DMA_InitStruct->Priority = LL_DMA_PRIORITY_LOW;
398 DMA_InitStruct->FIFOMode = LL_DMA_FIFOMODE_DISABLE;
399 DMA_InitStruct->FIFOThreshold = LL_DMA_FIFOTHRESHOLD_1_4;
400 DMA_InitStruct->MemBurst = LL_DMA_MBURST_SINGLE;
401 DMA_InitStruct->PeriphBurst = LL_DMA_PBURST_SINGLE;
402 }
403
404 /**
405 * @}
406 */
407
408 /**
409 * @}
410 */
411
412 /**
413 * @}
414 */
415
416 #endif /* DMA1 || DMA2 */
417
418 /**
419 * @}
420 */
421
422 #endif /* USE_FULL_LL_DRIVER */
423
424
