1 /** 2 ****************************************************************************** 3 * @file stm32l1xx_hal_i2c.h 4 * @author MCD Application Team 5 * @brief Header file of I2C HAL module. 6 ****************************************************************************** 7 * @attention 8 * 9 * Copyright (c) 2016 STMicroelectronics. 10 * All rights reserved. 11 * 12 * This software is licensed under terms that can be found in the LICENSE file 13 * in 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 19 /* Define to prevent recursive inclusion -------------------------------------*/ 20 #ifndef __STM32L1xx_HAL_I2C_H 21 #define __STM32L1xx_HAL_I2C_H 22 23 #ifdef __cplusplus 24 extern "C" { 25 #endif 26 27 /* Includes ------------------------------------------------------------------*/ 28 #include "stm32l1xx_hal_def.h" 29 30 /** @addtogroup STM32L1xx_HAL_Driver 31 * @{ 32 */ 33 34 /** @addtogroup I2C 35 * @{ 36 */ 37 38 /* Exported types ------------------------------------------------------------*/ 39 /** @defgroup I2C_Exported_Types I2C Exported Types 40 * @{ 41 */ 42 43 /** @defgroup I2C_Configuration_Structure_definition I2C Configuration Structure definition 44 * @brief I2C Configuration Structure definition 45 * @{ 46 */ 47 typedef struct 48 { 49 uint32_t ClockSpeed; /*!< Specifies the clock frequency. 50 This parameter must be set to a value lower than 400kHz */ 51 52 uint32_t DutyCycle; /*!< Specifies the I2C fast mode duty cycle. 53 This parameter can be a value of @ref I2C_duty_cycle_in_fast_mode */ 54 55 uint32_t OwnAddress1; /*!< Specifies the first device own address. 56 This parameter can be a 7-bit or 10-bit address. */ 57 58 uint32_t AddressingMode; /*!< Specifies if 7-bit or 10-bit addressing mode is selected. 59 This parameter can be a value of @ref I2C_addressing_mode */ 60 61 uint32_t DualAddressMode; /*!< Specifies if dual addressing mode is selected. 62 This parameter can be a value of @ref I2C_dual_addressing_mode */ 63 64 uint32_t OwnAddress2; /*!< Specifies the second device own address if dual addressing mode is selected 65 This parameter can be a 7-bit address. */ 66 67 uint32_t GeneralCallMode; /*!< Specifies if general call mode is selected. 68 This parameter can be a value of @ref I2C_general_call_addressing_mode */ 69 70 uint32_t NoStretchMode; /*!< Specifies if nostretch mode is selected. 71 This parameter can be a value of @ref I2C_nostretch_mode */ 72 73 } I2C_InitTypeDef; 74 75 /** 76 * @} 77 */ 78 79 /** @defgroup HAL_state_structure_definition HAL state structure definition 80 * @brief HAL State structure definition 81 * @note HAL I2C State value coding follow below described bitmap : 82 * b7-b6 Error information 83 * 00 : No Error 84 * 01 : Abort (Abort user request on going) 85 * 10 : Timeout 86 * 11 : Error 87 * b5 Peripheral initialization status 88 * 0 : Reset (Peripheral not initialized) 89 * 1 : Init done (Peripheral initialized and ready to use. HAL I2C Init function called) 90 * b4 (not used) 91 * x : Should be set to 0 92 * b3 93 * 0 : Ready or Busy (No Listen mode ongoing) 94 * 1 : Listen (Peripheral in Address Listen Mode) 95 * b2 Intrinsic process state 96 * 0 : Ready 97 * 1 : Busy (Peripheral busy with some configuration or internal operations) 98 * b1 Rx state 99 * 0 : Ready (no Rx operation ongoing) 100 * 1 : Busy (Rx operation ongoing) 101 * b0 Tx state 102 * 0 : Ready (no Tx operation ongoing) 103 * 1 : Busy (Tx operation ongoing) 104 * @{ 105 */ 106 typedef enum 107 { 108 HAL_I2C_STATE_RESET = 0x00U, /*!< Peripheral is not yet Initialized */ 109 HAL_I2C_STATE_READY = 0x20U, /*!< Peripheral Initialized and ready for use */ 110 HAL_I2C_STATE_BUSY = 0x24U, /*!< An internal process is ongoing */ 111 HAL_I2C_STATE_BUSY_TX = 0x21U, /*!< Data Transmission process is ongoing */ 112 HAL_I2C_STATE_BUSY_RX = 0x22U, /*!< Data Reception process is ongoing */ 113 HAL_I2C_STATE_LISTEN = 0x28U, /*!< Address Listen Mode is ongoing */ 114 HAL_I2C_STATE_BUSY_TX_LISTEN = 0x29U, /*!< Address Listen Mode and Data Transmission 115 process is ongoing */ 116 HAL_I2C_STATE_BUSY_RX_LISTEN = 0x2AU, /*!< Address Listen Mode and Data Reception 117 process is ongoing */ 118 HAL_I2C_STATE_ABORT = 0x60U, /*!< Abort user request ongoing */ 119 HAL_I2C_STATE_TIMEOUT = 0xA0U, /*!< Timeout state */ 120 HAL_I2C_STATE_ERROR = 0xE0U /*!< Error */ 121 122 } HAL_I2C_StateTypeDef; 123 124 /** 125 * @} 126 */ 127 128 /** @defgroup HAL_mode_structure_definition HAL mode structure definition 129 * @brief HAL Mode structure definition 130 * @note HAL I2C Mode value coding follow below described bitmap :\n 131 * b7 (not used)\n 132 * x : Should be set to 0\n 133 * b6\n 134 * 0 : None\n 135 * 1 : Memory (HAL I2C communication is in Memory Mode)\n 136 * b5\n 137 * 0 : None\n 138 * 1 : Slave (HAL I2C communication is in Slave Mode)\n 139 * b4\n 140 * 0 : None\n 141 * 1 : Master (HAL I2C communication is in Master Mode)\n 142 * b3-b2-b1-b0 (not used)\n 143 * xxxx : Should be set to 0000 144 * @{ 145 */ 146 typedef enum 147 { 148 HAL_I2C_MODE_NONE = 0x00U, /*!< No I2C communication on going */ 149 HAL_I2C_MODE_MASTER = 0x10U, /*!< I2C communication is in Master Mode */ 150 HAL_I2C_MODE_SLAVE = 0x20U, /*!< I2C communication is in Slave Mode */ 151 HAL_I2C_MODE_MEM = 0x40U /*!< I2C communication is in Memory Mode */ 152 153 } HAL_I2C_ModeTypeDef; 154 155 /** 156 * @} 157 */ 158 159 /** @defgroup I2C_Error_Code_definition I2C Error Code definition 160 * @brief I2C Error Code definition 161 * @{ 162 */ 163 #define HAL_I2C_ERROR_NONE 0x00000000U /*!< No error */ 164 #define HAL_I2C_ERROR_BERR 0x00000001U /*!< BERR error */ 165 #define HAL_I2C_ERROR_ARLO 0x00000002U /*!< ARLO error */ 166 #define HAL_I2C_ERROR_AF 0x00000004U /*!< AF error */ 167 #define HAL_I2C_ERROR_OVR 0x00000008U /*!< OVR error */ 168 #define HAL_I2C_ERROR_DMA 0x00000010U /*!< DMA transfer error */ 169 #define HAL_I2C_ERROR_TIMEOUT 0x00000020U /*!< Timeout Error */ 170 #define HAL_I2C_ERROR_SIZE 0x00000040U /*!< Size Management error */ 171 #define HAL_I2C_ERROR_DMA_PARAM 0x00000080U /*!< DMA Parameter Error */ 172 #define HAL_I2C_WRONG_START 0x00000200U /*!< Wrong start Error */ 173 #if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) 174 #define HAL_I2C_ERROR_INVALID_CALLBACK 0x00000100U /*!< Invalid Callback error */ 175 #endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ 176 /** 177 * @} 178 */ 179 180 /** @defgroup I2C_handle_Structure_definition I2C handle Structure definition 181 * @brief I2C handle Structure definition 182 * @{ 183 */ 184 #if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) 185 typedef struct __I2C_HandleTypeDef 186 #else 187 typedef struct 188 #endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ 189 { 190 I2C_TypeDef *Instance; /*!< I2C registers base address */ 191 192 I2C_InitTypeDef Init; /*!< I2C communication parameters */ 193 194 uint8_t *pBuffPtr; /*!< Pointer to I2C transfer buffer */ 195 196 uint16_t XferSize; /*!< I2C transfer size */ 197 198 __IO uint16_t XferCount; /*!< I2C transfer counter */ 199 200 __IO uint32_t XferOptions; /*!< I2C transfer options */ 201 202 __IO uint32_t PreviousState; /*!< I2C communication Previous state and mode 203 context for internal usage */ 204 205 DMA_HandleTypeDef *hdmatx; /*!< I2C Tx DMA handle parameters */ 206 207 DMA_HandleTypeDef *hdmarx; /*!< I2C Rx DMA handle parameters */ 208 209 HAL_LockTypeDef Lock; /*!< I2C locking object */ 210 211 __IO HAL_I2C_StateTypeDef State; /*!< I2C communication state */ 212 213 __IO HAL_I2C_ModeTypeDef Mode; /*!< I2C communication mode */ 214 215 __IO uint32_t ErrorCode; /*!< I2C Error code */ 216 217 __IO uint32_t Devaddress; /*!< I2C Target device address */ 218 219 __IO uint32_t Memaddress; /*!< I2C Target memory address */ 220 221 __IO uint32_t MemaddSize; /*!< I2C Target memory address size */ 222 223 __IO uint32_t EventCount; /*!< I2C Event counter */ 224 225 226 #if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) 227 void (* MasterTxCpltCallback)(struct __I2C_HandleTypeDef *hi2c); /*!< I2C Master Tx Transfer completed callback */ 228 void (* MasterRxCpltCallback)(struct __I2C_HandleTypeDef *hi2c); /*!< I2C Master Rx Transfer completed callback */ 229 void (* SlaveTxCpltCallback)(struct __I2C_HandleTypeDef *hi2c); /*!< I2C Slave Tx Transfer completed callback */ 230 void (* SlaveRxCpltCallback)(struct __I2C_HandleTypeDef *hi2c); /*!< I2C Slave Rx Transfer completed callback */ 231 void (* ListenCpltCallback)(struct __I2C_HandleTypeDef *hi2c); /*!< I2C Listen Complete callback */ 232 void (* MemTxCpltCallback)(struct __I2C_HandleTypeDef *hi2c); /*!< I2C Memory Tx Transfer completed callback */ 233 void (* MemRxCpltCallback)(struct __I2C_HandleTypeDef *hi2c); /*!< I2C Memory Rx Transfer completed callback */ 234 void (* ErrorCallback)(struct __I2C_HandleTypeDef *hi2c); /*!< I2C Error callback */ 235 void (* AbortCpltCallback)(struct __I2C_HandleTypeDef *hi2c); /*!< I2C Abort callback */ 236 237 void (* AddrCallback)(struct __I2C_HandleTypeDef *hi2c, uint8_t TransferDirection, uint16_t AddrMatchCode); /*!< I2C Slave Address Match callback */ 238 239 void (* MspInitCallback)(struct __I2C_HandleTypeDef *hi2c); /*!< I2C Msp Init callback */ 240 void (* MspDeInitCallback)(struct __I2C_HandleTypeDef *hi2c); /*!< I2C Msp DeInit callback */ 241 242 #endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ 243 } I2C_HandleTypeDef; 244 245 #if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) 246 /** 247 * @brief HAL I2C Callback ID enumeration definition 248 */ 249 typedef enum 250 { 251 HAL_I2C_MASTER_TX_COMPLETE_CB_ID = 0x00U, /*!< I2C Master Tx Transfer completed callback ID */ 252 HAL_I2C_MASTER_RX_COMPLETE_CB_ID = 0x01U, /*!< I2C Master Rx Transfer completed callback ID */ 253 HAL_I2C_SLAVE_TX_COMPLETE_CB_ID = 0x02U, /*!< I2C Slave Tx Transfer completed callback ID */ 254 HAL_I2C_SLAVE_RX_COMPLETE_CB_ID = 0x03U, /*!< I2C Slave Rx Transfer completed callback ID */ 255 HAL_I2C_LISTEN_COMPLETE_CB_ID = 0x04U, /*!< I2C Listen Complete callback ID */ 256 HAL_I2C_MEM_TX_COMPLETE_CB_ID = 0x05U, /*!< I2C Memory Tx Transfer callback ID */ 257 HAL_I2C_MEM_RX_COMPLETE_CB_ID = 0x06U, /*!< I2C Memory Rx Transfer completed callback ID */ 258 HAL_I2C_ERROR_CB_ID = 0x07U, /*!< I2C Error callback ID */ 259 HAL_I2C_ABORT_CB_ID = 0x08U, /*!< I2C Abort callback ID */ 260 261 HAL_I2C_MSPINIT_CB_ID = 0x09U, /*!< I2C Msp Init callback ID */ 262 HAL_I2C_MSPDEINIT_CB_ID = 0x0AU /*!< I2C Msp DeInit callback ID */ 263 264 } HAL_I2C_CallbackIDTypeDef; 265 266 /** 267 * @brief HAL I2C Callback pointer definition 268 */ 269 typedef void (*pI2C_CallbackTypeDef)(I2C_HandleTypeDef *hi2c); /*!< pointer to an I2C callback function */ 270 typedef void (*pI2C_AddrCallbackTypeDef)(I2C_HandleTypeDef *hi2c, uint8_t TransferDirection, uint16_t AddrMatchCode); /*!< pointer to an I2C Address Match callback function */ 271 272 #endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ 273 /** 274 * @} 275 */ 276 277 /** 278 * @} 279 */ 280 /* Exported constants --------------------------------------------------------*/ 281 282 /** @defgroup I2C_Exported_Constants I2C Exported Constants 283 * @{ 284 */ 285 286 /** @defgroup I2C_duty_cycle_in_fast_mode I2C duty cycle in fast mode 287 * @{ 288 */ 289 #define I2C_DUTYCYCLE_2 0x00000000U 290 #define I2C_DUTYCYCLE_16_9 I2C_CCR_DUTY 291 /** 292 * @} 293 */ 294 295 /** @defgroup I2C_addressing_mode I2C addressing mode 296 * @{ 297 */ 298 #define I2C_ADDRESSINGMODE_7BIT 0x00004000U 299 #define I2C_ADDRESSINGMODE_10BIT (I2C_OAR1_ADDMODE | 0x00004000U) 300 /** 301 * @} 302 */ 303 304 /** @defgroup I2C_dual_addressing_mode I2C dual addressing mode 305 * @{ 306 */ 307 #define I2C_DUALADDRESS_DISABLE 0x00000000U 308 #define I2C_DUALADDRESS_ENABLE I2C_OAR2_ENDUAL 309 /** 310 * @} 311 */ 312 313 /** @defgroup I2C_general_call_addressing_mode I2C general call addressing mode 314 * @{ 315 */ 316 #define I2C_GENERALCALL_DISABLE 0x00000000U 317 #define I2C_GENERALCALL_ENABLE I2C_CR1_ENGC 318 /** 319 * @} 320 */ 321 322 /** @defgroup I2C_nostretch_mode I2C nostretch mode 323 * @{ 324 */ 325 #define I2C_NOSTRETCH_DISABLE 0x00000000U 326 #define I2C_NOSTRETCH_ENABLE I2C_CR1_NOSTRETCH 327 /** 328 * @} 329 */ 330 331 /** @defgroup I2C_Memory_Address_Size I2C Memory Address Size 332 * @{ 333 */ 334 #define I2C_MEMADD_SIZE_8BIT 0x00000001U 335 #define I2C_MEMADD_SIZE_16BIT 0x00000010U 336 /** 337 * @} 338 */ 339 340 /** @defgroup I2C_XferDirection_definition I2C XferDirection definition 341 * @{ 342 */ 343 #define I2C_DIRECTION_RECEIVE 0x00000000U 344 #define I2C_DIRECTION_TRANSMIT 0x00000001U 345 /** 346 * @} 347 */ 348 349 /** @defgroup I2C_XferOptions_definition I2C XferOptions definition 350 * @{ 351 */ 352 #define I2C_FIRST_FRAME 0x00000001U 353 #define I2C_FIRST_AND_NEXT_FRAME 0x00000002U 354 #define I2C_NEXT_FRAME 0x00000004U 355 #define I2C_FIRST_AND_LAST_FRAME 0x00000008U 356 #define I2C_LAST_FRAME_NO_STOP 0x00000010U 357 #define I2C_LAST_FRAME 0x00000020U 358 359 /* List of XferOptions in usage of : 360 * 1- Restart condition in all use cases (direction change or not) 361 */ 362 #define I2C_OTHER_FRAME (0x00AA0000U) 363 #define I2C_OTHER_AND_LAST_FRAME (0xAA000000U) 364 /** 365 * @} 366 */ 367 368 /** @defgroup I2C_Interrupt_configuration_definition I2C Interrupt configuration definition 369 * @brief I2C Interrupt definition 370 * Elements values convention: 0xXXXXXXXX 371 * - XXXXXXXX : Interrupt control mask 372 * @{ 373 */ 374 #define I2C_IT_BUF I2C_CR2_ITBUFEN 375 #define I2C_IT_EVT I2C_CR2_ITEVTEN 376 #define I2C_IT_ERR I2C_CR2_ITERREN 377 /** 378 * @} 379 */ 380 381 /** @defgroup I2C_Flag_definition I2C Flag definition 382 * @{ 383 */ 384 385 #define I2C_FLAG_OVR 0x00010800U 386 #define I2C_FLAG_AF 0x00010400U 387 #define I2C_FLAG_ARLO 0x00010200U 388 #define I2C_FLAG_BERR 0x00010100U 389 #define I2C_FLAG_TXE 0x00010080U 390 #define I2C_FLAG_RXNE 0x00010040U 391 #define I2C_FLAG_STOPF 0x00010010U 392 #define I2C_FLAG_ADD10 0x00010008U 393 #define I2C_FLAG_BTF 0x00010004U 394 #define I2C_FLAG_ADDR 0x00010002U 395 #define I2C_FLAG_SB 0x00010001U 396 #define I2C_FLAG_DUALF 0x00100080U 397 #define I2C_FLAG_GENCALL 0x00100010U 398 #define I2C_FLAG_TRA 0x00100004U 399 #define I2C_FLAG_BUSY 0x00100002U 400 #define I2C_FLAG_MSL 0x00100001U 401 /** 402 * @} 403 */ 404 405 /** 406 * @} 407 */ 408 409 /* Exported macros -----------------------------------------------------------*/ 410 411 /** @defgroup I2C_Exported_Macros I2C Exported Macros 412 * @{ 413 */ 414 415 /** @brief Reset I2C handle state. 416 * @param __HANDLE__ specifies the I2C Handle. 417 * @retval None 418 */ 419 #if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) 420 #define __HAL_I2C_RESET_HANDLE_STATE(__HANDLE__) do{ \ 421 (__HANDLE__)->State = HAL_I2C_STATE_RESET; \ 422 (__HANDLE__)->MspInitCallback = NULL; \ 423 (__HANDLE__)->MspDeInitCallback = NULL; \ 424 } while(0) 425 #else 426 #define __HAL_I2C_RESET_HANDLE_STATE(__HANDLE__) ((__HANDLE__)->State = HAL_I2C_STATE_RESET) 427 #endif 428 429 /** @brief Enable or disable the specified I2C interrupts. 430 * @param __HANDLE__ specifies the I2C Handle. 431 * @param __INTERRUPT__ specifies the interrupt source to enable or disable. 432 * This parameter can be one of the following values: 433 * @arg I2C_IT_BUF: Buffer interrupt enable 434 * @arg I2C_IT_EVT: Event interrupt enable 435 * @arg I2C_IT_ERR: Error interrupt enable 436 * @retval None 437 */ 438 #define __HAL_I2C_ENABLE_IT(__HANDLE__, __INTERRUPT__) SET_BIT((__HANDLE__)->Instance->CR2,(__INTERRUPT__)) 439 #define __HAL_I2C_DISABLE_IT(__HANDLE__, __INTERRUPT__) CLEAR_BIT((__HANDLE__)->Instance->CR2, (__INTERRUPT__)) 440 441 /** @brief Checks if the specified I2C interrupt source is enabled or disabled. 442 * @param __HANDLE__ specifies the I2C Handle. 443 * @param __INTERRUPT__ specifies the I2C interrupt source to check. 444 * This parameter can be one of the following values: 445 * @arg I2C_IT_BUF: Buffer interrupt enable 446 * @arg I2C_IT_EVT: Event interrupt enable 447 * @arg I2C_IT_ERR: Error interrupt enable 448 * @retval The new state of __INTERRUPT__ (TRUE or FALSE). 449 */ 450 #define __HAL_I2C_GET_IT_SOURCE(__HANDLE__, __INTERRUPT__) ((((__HANDLE__)->Instance->CR2 & (__INTERRUPT__)) == (__INTERRUPT__)) ? SET : RESET) 451 452 /** @brief Checks whether the specified I2C flag is set or not. 453 * @param __HANDLE__ specifies the I2C Handle. 454 * @param __FLAG__ specifies the flag to check. 455 * This parameter can be one of the following values: 456 * @arg I2C_FLAG_OVR: Overrun/Underrun flag 457 * @arg I2C_FLAG_AF: Acknowledge failure flag 458 * @arg I2C_FLAG_ARLO: Arbitration lost flag 459 * @arg I2C_FLAG_BERR: Bus error flag 460 * @arg I2C_FLAG_TXE: Data register empty flag 461 * @arg I2C_FLAG_RXNE: Data register not empty flag 462 * @arg I2C_FLAG_STOPF: Stop detection flag 463 * @arg I2C_FLAG_ADD10: 10-bit header sent flag 464 * @arg I2C_FLAG_BTF: Byte transfer finished flag 465 * @arg I2C_FLAG_ADDR: Address sent flag 466 * Address matched flag 467 * @arg I2C_FLAG_SB: Start bit flag 468 * @arg I2C_FLAG_DUALF: Dual flag 469 * @arg I2C_FLAG_GENCALL: General call header flag 470 * @arg I2C_FLAG_TRA: Transmitter/Receiver flag 471 * @arg I2C_FLAG_BUSY: Bus busy flag 472 * @arg I2C_FLAG_MSL: Master/Slave flag 473 * @retval The new state of __FLAG__ (TRUE or FALSE). 474 */ 475 #define __HAL_I2C_GET_FLAG(__HANDLE__, __FLAG__) ((((uint8_t)((__FLAG__) >> 16U)) == 0x01U) ? \ 476 (((((__HANDLE__)->Instance->SR1) & ((__FLAG__) & I2C_FLAG_MASK)) == ((__FLAG__) & I2C_FLAG_MASK)) ? SET : RESET) : \ 477 (((((__HANDLE__)->Instance->SR2) & ((__FLAG__) & I2C_FLAG_MASK)) == ((__FLAG__) & I2C_FLAG_MASK)) ? SET : RESET)) 478 479 /** @brief Clears the I2C pending flags which are cleared by writing 0 in a specific bit. 480 * @param __HANDLE__ specifies the I2C Handle. 481 * @param __FLAG__ specifies the flag to clear. 482 * This parameter can be any combination of the following values: 483 * @arg I2C_FLAG_OVR: Overrun/Underrun flag (Slave mode) 484 * @arg I2C_FLAG_AF: Acknowledge failure flag 485 * @arg I2C_FLAG_ARLO: Arbitration lost flag (Master mode) 486 * @arg I2C_FLAG_BERR: Bus error flag 487 * @retval None 488 */ 489 #define __HAL_I2C_CLEAR_FLAG(__HANDLE__, __FLAG__) ((__HANDLE__)->Instance->SR1 = ~((__FLAG__) & I2C_FLAG_MASK)) 490 491 /** @brief Clears the I2C ADDR pending flag. 492 * @param __HANDLE__ specifies the I2C Handle. 493 * This parameter can be I2C where x: 1, 2, or 3 to select the I2C peripheral. 494 * @retval None 495 */ 496 #define __HAL_I2C_CLEAR_ADDRFLAG(__HANDLE__) \ 497 do{ \ 498 __IO uint32_t tmpreg = 0x00U; \ 499 tmpreg = (__HANDLE__)->Instance->SR1; \ 500 tmpreg = (__HANDLE__)->Instance->SR2; \ 501 UNUSED(tmpreg); \ 502 } while(0) 503 504 /** @brief Clears the I2C STOPF pending flag. 505 * @param __HANDLE__ specifies the I2C Handle. 506 * @retval None 507 */ 508 #define __HAL_I2C_CLEAR_STOPFLAG(__HANDLE__) \ 509 do{ \ 510 __IO uint32_t tmpreg = 0x00U; \ 511 tmpreg = (__HANDLE__)->Instance->SR1; \ 512 SET_BIT((__HANDLE__)->Instance->CR1, I2C_CR1_PE); \ 513 UNUSED(tmpreg); \ 514 } while(0) 515 516 /** @brief Enable the specified I2C peripheral. 517 * @param __HANDLE__ specifies the I2C Handle. 518 * @retval None 519 */ 520 #define __HAL_I2C_ENABLE(__HANDLE__) SET_BIT((__HANDLE__)->Instance->CR1, I2C_CR1_PE) 521 522 /** @brief Disable the specified I2C peripheral. 523 * @param __HANDLE__ specifies the I2C Handle. 524 * @retval None 525 */ 526 #define __HAL_I2C_DISABLE(__HANDLE__) CLEAR_BIT((__HANDLE__)->Instance->CR1, I2C_CR1_PE) 527 528 /** 529 * @} 530 */ 531 532 /* Exported functions --------------------------------------------------------*/ 533 /** @addtogroup I2C_Exported_Functions 534 * @{ 535 */ 536 537 /** @addtogroup I2C_Exported_Functions_Group1 Initialization and de-initialization functions 538 * @{ 539 */ 540 /* Initialization and de-initialization functions******************************/ 541 HAL_StatusTypeDef HAL_I2C_Init(I2C_HandleTypeDef *hi2c); 542 HAL_StatusTypeDef HAL_I2C_DeInit(I2C_HandleTypeDef *hi2c); 543 void HAL_I2C_MspInit(I2C_HandleTypeDef *hi2c); 544 void HAL_I2C_MspDeInit(I2C_HandleTypeDef *hi2c); 545 546 /* Callbacks Register/UnRegister functions ***********************************/ 547 #if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) 548 HAL_StatusTypeDef HAL_I2C_RegisterCallback(I2C_HandleTypeDef *hi2c, HAL_I2C_CallbackIDTypeDef CallbackID, pI2C_CallbackTypeDef pCallback); 549 HAL_StatusTypeDef HAL_I2C_UnRegisterCallback(I2C_HandleTypeDef *hi2c, HAL_I2C_CallbackIDTypeDef CallbackID); 550 551 HAL_StatusTypeDef HAL_I2C_RegisterAddrCallback(I2C_HandleTypeDef *hi2c, pI2C_AddrCallbackTypeDef pCallback); 552 HAL_StatusTypeDef HAL_I2C_UnRegisterAddrCallback(I2C_HandleTypeDef *hi2c); 553 #endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ 554 /** 555 * @} 556 */ 557 558 /** @addtogroup I2C_Exported_Functions_Group2 Input and Output operation functions 559 * @{ 560 */ 561 /* IO operation functions ****************************************************/ 562 /******* Blocking mode: Polling */ 563 HAL_StatusTypeDef HAL_I2C_Master_Transmit(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t Timeout); 564 HAL_StatusTypeDef HAL_I2C_Master_Receive(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t Timeout); 565 HAL_StatusTypeDef HAL_I2C_Slave_Transmit(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t Timeout); 566 HAL_StatusTypeDef HAL_I2C_Slave_Receive(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t Timeout); 567 HAL_StatusTypeDef HAL_I2C_Mem_Write(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout); 568 HAL_StatusTypeDef HAL_I2C_Mem_Read(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout); 569 HAL_StatusTypeDef HAL_I2C_IsDeviceReady(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Trials, uint32_t Timeout); 570 571 /******* Non-Blocking mode: Interrupt */ 572 HAL_StatusTypeDef HAL_I2C_Master_Transmit_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size); 573 HAL_StatusTypeDef HAL_I2C_Master_Receive_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size); 574 HAL_StatusTypeDef HAL_I2C_Slave_Transmit_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size); 575 HAL_StatusTypeDef HAL_I2C_Slave_Receive_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size); 576 HAL_StatusTypeDef HAL_I2C_Mem_Write_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size); 577 HAL_StatusTypeDef HAL_I2C_Mem_Read_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size); 578 579 HAL_StatusTypeDef HAL_I2C_Master_Seq_Transmit_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions); 580 HAL_StatusTypeDef HAL_I2C_Master_Seq_Receive_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions); 581 HAL_StatusTypeDef HAL_I2C_Slave_Seq_Transmit_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions); 582 HAL_StatusTypeDef HAL_I2C_Slave_Seq_Receive_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions); 583 HAL_StatusTypeDef HAL_I2C_EnableListen_IT(I2C_HandleTypeDef *hi2c); 584 HAL_StatusTypeDef HAL_I2C_DisableListen_IT(I2C_HandleTypeDef *hi2c); 585 HAL_StatusTypeDef HAL_I2C_Master_Abort_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress); 586 587 /******* Non-Blocking mode: DMA */ 588 HAL_StatusTypeDef HAL_I2C_Master_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size); 589 HAL_StatusTypeDef HAL_I2C_Master_Receive_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size); 590 HAL_StatusTypeDef HAL_I2C_Slave_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size); 591 HAL_StatusTypeDef HAL_I2C_Slave_Receive_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size); 592 HAL_StatusTypeDef HAL_I2C_Mem_Write_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size); 593 HAL_StatusTypeDef HAL_I2C_Mem_Read_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size); 594 595 HAL_StatusTypeDef HAL_I2C_Master_Seq_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions); 596 HAL_StatusTypeDef HAL_I2C_Master_Seq_Receive_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions); 597 HAL_StatusTypeDef HAL_I2C_Slave_Seq_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions); 598 HAL_StatusTypeDef HAL_I2C_Slave_Seq_Receive_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions); 599 /** 600 * @} 601 */ 602 603 /** @addtogroup I2C_IRQ_Handler_and_Callbacks IRQ Handler and Callbacks 604 * @{ 605 */ 606 /******* I2C IRQHandler and Callbacks used in non blocking modes (Interrupt and DMA) */ 607 void HAL_I2C_EV_IRQHandler(I2C_HandleTypeDef *hi2c); 608 void HAL_I2C_ER_IRQHandler(I2C_HandleTypeDef *hi2c); 609 void HAL_I2C_MasterTxCpltCallback(I2C_HandleTypeDef *hi2c); 610 void HAL_I2C_MasterRxCpltCallback(I2C_HandleTypeDef *hi2c); 611 void HAL_I2C_SlaveTxCpltCallback(I2C_HandleTypeDef *hi2c); 612 void HAL_I2C_SlaveRxCpltCallback(I2C_HandleTypeDef *hi2c); 613 void HAL_I2C_AddrCallback(I2C_HandleTypeDef *hi2c, uint8_t TransferDirection, uint16_t AddrMatchCode); 614 void HAL_I2C_ListenCpltCallback(I2C_HandleTypeDef *hi2c); 615 void HAL_I2C_MemTxCpltCallback(I2C_HandleTypeDef *hi2c); 616 void HAL_I2C_MemRxCpltCallback(I2C_HandleTypeDef *hi2c); 617 void HAL_I2C_ErrorCallback(I2C_HandleTypeDef *hi2c); 618 void HAL_I2C_AbortCpltCallback(I2C_HandleTypeDef *hi2c); 619 /** 620 * @} 621 */ 622 623 /** @addtogroup I2C_Exported_Functions_Group3 Peripheral State, Mode and Error functions 624 * @{ 625 */ 626 /* Peripheral State, Mode and Error functions *********************************/ 627 HAL_I2C_StateTypeDef HAL_I2C_GetState(I2C_HandleTypeDef *hi2c); 628 HAL_I2C_ModeTypeDef HAL_I2C_GetMode(I2C_HandleTypeDef *hi2c); 629 uint32_t HAL_I2C_GetError(I2C_HandleTypeDef *hi2c); 630 631 /** 632 * @} 633 */ 634 635 /** 636 * @} 637 */ 638 /* Private types -------------------------------------------------------------*/ 639 /* Private variables ---------------------------------------------------------*/ 640 /* Private constants ---------------------------------------------------------*/ 641 /** @defgroup I2C_Private_Constants I2C Private Constants 642 * @{ 643 */ 644 #define I2C_FLAG_MASK 0x0000FFFFU 645 #define I2C_MIN_PCLK_FREQ_STANDARD 2000000U /*!< 2 MHz */ 646 #define I2C_MIN_PCLK_FREQ_FAST 4000000U /*!< 4 MHz */ 647 /** 648 * @} 649 */ 650 651 /* Private macros ------------------------------------------------------------*/ 652 /** @defgroup I2C_Private_Macros I2C Private Macros 653 * @{ 654 */ 655 656 #define I2C_MIN_PCLK_FREQ(__PCLK__, __SPEED__) (((__SPEED__) <= 100000U) ? ((__PCLK__) < I2C_MIN_PCLK_FREQ_STANDARD) : ((__PCLK__) < I2C_MIN_PCLK_FREQ_FAST)) 657 #define I2C_CCR_CALCULATION(__PCLK__, __SPEED__, __COEFF__) (((((__PCLK__) - 1U)/((__SPEED__) * (__COEFF__))) + 1U) & I2C_CCR_CCR) 658 #define I2C_FREQRANGE(__PCLK__) ((__PCLK__)/1000000U) 659 #define I2C_RISE_TIME(__FREQRANGE__, __SPEED__) (((__SPEED__) <= 100000U) ? ((__FREQRANGE__) + 1U) : ((((__FREQRANGE__) * 300U) / 1000U) + 1U)) 660 #define I2C_SPEED_STANDARD(__PCLK__, __SPEED__) ((I2C_CCR_CALCULATION((__PCLK__), (__SPEED__), 2U) < 4U)? 4U:I2C_CCR_CALCULATION((__PCLK__), (__SPEED__), 2U)) 661 #define I2C_SPEED_FAST(__PCLK__, __SPEED__, __DUTYCYCLE__) (((__DUTYCYCLE__) == I2C_DUTYCYCLE_2)? I2C_CCR_CALCULATION((__PCLK__), (__SPEED__), 3U) : (I2C_CCR_CALCULATION((__PCLK__), (__SPEED__), 25U) | I2C_DUTYCYCLE_16_9)) 662 #define I2C_SPEED(__PCLK__, __SPEED__, __DUTYCYCLE__) (((__SPEED__) <= 100000U)? (I2C_SPEED_STANDARD((__PCLK__), (__SPEED__))) : \ 663 ((I2C_SPEED_FAST((__PCLK__), (__SPEED__), (__DUTYCYCLE__)) & I2C_CCR_CCR) == 0U)? 1U : \ 664 ((I2C_SPEED_FAST((__PCLK__), (__SPEED__), (__DUTYCYCLE__))) | I2C_CCR_FS)) 665 666 #define I2C_7BIT_ADD_WRITE(__ADDRESS__) ((uint8_t)((__ADDRESS__) & (uint8_t)(~I2C_OAR1_ADD0))) 667 #define I2C_7BIT_ADD_READ(__ADDRESS__) ((uint8_t)((__ADDRESS__) | I2C_OAR1_ADD0)) 668 669 #define I2C_10BIT_ADDRESS(__ADDRESS__) ((uint8_t)((uint16_t)((__ADDRESS__) & (uint16_t)0x00FF))) 670 #define I2C_10BIT_HEADER_WRITE(__ADDRESS__) ((uint8_t)((uint16_t)((uint16_t)(((uint16_t)((__ADDRESS__) & (uint16_t)0x0300)) >> 7) | (uint16_t)0x00F0))) 671 #define I2C_10BIT_HEADER_READ(__ADDRESS__) ((uint8_t)((uint16_t)((uint16_t)(((uint16_t)((__ADDRESS__) & (uint16_t)0x0300)) >> 7) | (uint16_t)(0x00F1)))) 672 673 #define I2C_MEM_ADD_MSB(__ADDRESS__) ((uint8_t)((uint16_t)(((uint16_t)((__ADDRESS__) & (uint16_t)0xFF00)) >> 8))) 674 #define I2C_MEM_ADD_LSB(__ADDRESS__) ((uint8_t)((uint16_t)((__ADDRESS__) & (uint16_t)0x00FF))) 675 676 /** @defgroup I2C_IS_RTC_Definitions I2C Private macros to check input parameters 677 * @{ 678 */ 679 #define IS_I2C_DUTY_CYCLE(CYCLE) (((CYCLE) == I2C_DUTYCYCLE_2) || \ 680 ((CYCLE) == I2C_DUTYCYCLE_16_9)) 681 #define IS_I2C_ADDRESSING_MODE(ADDRESS) (((ADDRESS) == I2C_ADDRESSINGMODE_7BIT) || \ 682 ((ADDRESS) == I2C_ADDRESSINGMODE_10BIT)) 683 #define IS_I2C_DUAL_ADDRESS(ADDRESS) (((ADDRESS) == I2C_DUALADDRESS_DISABLE) || \ 684 ((ADDRESS) == I2C_DUALADDRESS_ENABLE)) 685 #define IS_I2C_GENERAL_CALL(CALL) (((CALL) == I2C_GENERALCALL_DISABLE) || \ 686 ((CALL) == I2C_GENERALCALL_ENABLE)) 687 #define IS_I2C_NO_STRETCH(STRETCH) (((STRETCH) == I2C_NOSTRETCH_DISABLE) || \ 688 ((STRETCH) == I2C_NOSTRETCH_ENABLE)) 689 #define IS_I2C_MEMADD_SIZE(SIZE) (((SIZE) == I2C_MEMADD_SIZE_8BIT) || \ 690 ((SIZE) == I2C_MEMADD_SIZE_16BIT)) 691 #define IS_I2C_CLOCK_SPEED(SPEED) (((SPEED) > 0U) && ((SPEED) <= 400000U)) 692 #define IS_I2C_OWN_ADDRESS1(ADDRESS1) (((ADDRESS1) & 0xFFFFFC00U) == 0U) 693 #define IS_I2C_OWN_ADDRESS2(ADDRESS2) (((ADDRESS2) & 0xFFFFFF01U) == 0U) 694 #define IS_I2C_TRANSFER_OPTIONS_REQUEST(REQUEST) (((REQUEST) == I2C_FIRST_FRAME) || \ 695 ((REQUEST) == I2C_FIRST_AND_NEXT_FRAME) || \ 696 ((REQUEST) == I2C_NEXT_FRAME) || \ 697 ((REQUEST) == I2C_FIRST_AND_LAST_FRAME) || \ 698 ((REQUEST) == I2C_LAST_FRAME) || \ 699 ((REQUEST) == I2C_LAST_FRAME_NO_STOP) || \ 700 IS_I2C_TRANSFER_OTHER_OPTIONS_REQUEST(REQUEST)) 701 702 #define IS_I2C_TRANSFER_OTHER_OPTIONS_REQUEST(REQUEST) (((REQUEST) == I2C_OTHER_FRAME) || \ 703 ((REQUEST) == I2C_OTHER_AND_LAST_FRAME)) 704 705 #define I2C_CHECK_FLAG(__ISR__, __FLAG__) ((((__ISR__) & ((__FLAG__) & I2C_FLAG_MASK)) == ((__FLAG__) & I2C_FLAG_MASK)) ? SET : RESET) 706 #define I2C_CHECK_IT_SOURCE(__CR1__, __IT__) ((((__CR1__) & (__IT__)) == (__IT__)) ? SET : RESET) 707 /** 708 * @} 709 */ 710 711 /** 712 * @} 713 */ 714 715 /* Private functions ---------------------------------------------------------*/ 716 /** @defgroup I2C_Private_Functions I2C Private Functions 717 * @{ 718 */ 719 720 /** 721 * @} 722 */ 723 724 /** 725 * @} 726 */ 727 728 /** 729 * @} 730 */ 731 732 #ifdef __cplusplus 733 } 734 #endif 735 736 737 #endif /* __STM32L1xx_HAL_I2C_H */ 738 739
