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annotate Small_CPU/Src/spi.c @ 124:4b355396557a FlipDisplay
Change GPIO speed for SPI communication as recommended by STM32 Errata
| author | Ideenmodellierer |
|---|---|
| date | Sun, 27 Jan 2019 22:17:16 +0100 |
| parents | 6347a86caa18 |
| children | 6ae8ba5683d6 |
| rev | line source |
|---|---|
| 38 | 1 /** |
| 89 | 2 ****************************************************************************** |
| 3 * @file spi.c | |
| 4 * @author heinrichs weikamp gmbh | |
| 5 * @version V0.0.1 | |
| 6 * @date 16-Sept-2014 | |
| 7 * @brief Source code for spi control | |
| 8 * | |
| 9 @verbatim | |
| 10 ============================================================================== | |
| 11 ##### How to use ##### | |
| 12 ============================================================================== | |
| 13 @endverbatim | |
| 14 ****************************************************************************** | |
| 15 * @attention | |
| 16 * | |
| 17 * <h2><center>© COPYRIGHT(c) 2014 heinrichs weikamp</center></h2> | |
| 18 * | |
| 19 ****************************************************************************** | |
| 20 */ | |
| 38 | 21 |
| 22 /* Includes ------------------------------------------------------------------*/ | |
| 23 #include "spi.h" | |
| 120 | 24 #include "dma.h" |
| 38 | 25 //#include "gpio.h" |
| 26 | |
| 27 /* USER CODE BEGIN 0 */ | |
| 28 #include "scheduler.h" | |
| 29 | |
| 120 | 30 #ifdef DEBUG_GPIO |
| 38 | 31 extern void GPIO_new_DEBUG_LOW(void); |
| 32 extern void GPIO_new_DEBUG_HIGH(void); | |
| 120 | 33 #endif |
| 38 | 34 |
| 89 | 35 uint8_t data_error = 0; |
| 36 uint32_t data_error_time = 0; | |
| 38 | 37 |
| 38 static void SPI_Error_Handler(void); | |
| 39 | |
| 40 /* USER CODE END 0 */ | |
| 41 | |
| 42 static uint8_t SPI_check_header_and_footer_ok(void); | |
| 43 | |
| 44 SPI_HandleTypeDef hspi1; | |
| 45 SPI_HandleTypeDef hspi3; | |
| 46 | |
| 47 DMA_HandleTypeDef hdma_tx; | |
| 48 DMA_HandleTypeDef hdma_rx; | |
| 49 | |
| 50 // SPI3 init function | |
| 89 | 51 void MX_SPI3_Init(void) { |
| 52 hspi3.Instance = SPI3; | |
| 53 hspi3.Init.Mode = SPI_MODE_MASTER; | |
| 54 hspi3.Init.Direction = SPI_DIRECTION_2LINES; | |
| 55 hspi3.Init.DataSize = SPI_DATASIZE_8BIT; | |
| 56 hspi3.Init.CLKPolarity = SPI_POLARITY_HIGH; | |
| 57 hspi3.Init.CLKPhase = SPI_PHASE_1EDGE; | |
| 58 hspi3.Init.NSS = SPI_NSS_SOFT; | |
| 59 hspi3.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_256; | |
| 60 hspi3.Init.FirstBit = SPI_FIRSTBIT_MSB; | |
| 61 hspi3.Init.TIMode = SPI_TIMODE_DISABLED; | |
| 62 hspi3.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLED; | |
| 63 hspi3.Init.CRCPolynomial = 7; | |
| 64 HAL_SPI_Init(&hspi3); | |
| 38 | 65 } |
| 66 | |
| 89 | 67 void MX_SPI3_DeInit(void) { |
| 68 HAL_SPI_DeInit(&hspi3); | |
| 38 | 69 } |
| 70 | |
| 89 | 71 uint8_t SPI3_ButtonAdjust(uint8_t *arrayInput, uint8_t *arrayOutput) { |
| 38 | 72 HAL_StatusTypeDef status; |
| 73 uint8_t answer[10]; | |
| 74 uint8_t rework[10]; | |
| 75 | |
| 76 rework[0] = 0xFF; | |
| 89 | 77 for (int i = 0; i < 3; i++) { |
| 38 | 78 // limiter |
| 89 | 79 if (arrayInput[i] == 0xFF) |
| 38 | 80 arrayInput[i] = 0xFE; |
| 89 | 81 if (arrayInput[i] >= 15) { |
| 82 | 82 // copy - ausl�se-schwelle |
| 89 | 83 rework[i + 1] = arrayInput[i]; |
| 38 | 84 // wieder-scharf-schalte-schwelle |
| 89 | 85 rework[i + 3 + 1] = arrayInput[i] - 10; |
| 86 } else if (arrayInput[i] >= 10) { | |
| 82 | 87 // copy - ausl�se-schwelle |
| 89 | 88 rework[i + 1] = arrayInput[i]; |
| 38 | 89 // wieder-scharf-schalte-schwelle |
| 89 | 90 rework[i + 3 + 1] = arrayInput[i] - 5; |
| 91 } else { | |
| 82 | 92 // copy - ausl�se-schwelle |
| 89 | 93 rework[i + 1] = 7; |
| 38 | 94 // wieder-scharf-schalte-schwelle |
| 89 | 95 rework[i + 3 + 1] = 6; |
| 38 | 96 } |
| 97 } | |
| 98 | |
| 99 status = HAL_OK; /* = 0 */ | |
| 89 | 100 HAL_GPIO_WritePin(GPIOC, GPIO_PIN_9, GPIO_PIN_SET); |
| 101 for (int i = 0; i < 7; i++) { | |
| 102 HAL_Delay(10); | |
| 103 HAL_GPIO_WritePin(GPIOC, GPIO_PIN_9, GPIO_PIN_RESET); | |
| 63 | 104 HAL_Delay(10); |
| 89 | 105 status += HAL_SPI_TransmitReceive(&hspi3, &rework[i], &answer[i], 1, |
| 106 20); | |
| 63 | 107 HAL_Delay(10); |
| 89 | 108 HAL_GPIO_WritePin(GPIOC, GPIO_PIN_9, GPIO_PIN_SET); |
| 38 | 109 } |
| 89 | 110 |
| 111 if (status == HAL_OK) { | |
| 112 for (int i = 0; i < 3; i++) { | |
| 113 arrayOutput[i] = answer[i + 2]; // first not, return of 0xFF not | |
| 114 } | |
| 38 | 115 return 1; |
| 89 | 116 } else |
| 117 | |
| 38 | 118 return 0; |
| 119 } | |
| 120 | |
| 121 // SPI5 init function | |
| 89 | 122 void MX_SPI1_Init(void) { |
| 123 hspi1.Instance = SPI1; | |
| 124 hspi1.Init.Mode = SPI_MODE_SLAVE; | |
| 125 hspi1.Init.Direction = SPI_DIRECTION_2LINES; | |
| 126 hspi1.Init.DataSize = SPI_DATASIZE_8BIT; | |
| 127 hspi1.Init.CLKPolarity = SPI_POLARITY_LOW; | |
| 128 hspi1.Init.CLKPhase = SPI_PHASE_1EDGE; | |
| 129 hspi1.Init.NSS = SPI_NSS_HARD_INPUT; //SPI_NSS_SOFT; | |
| 104 | 130 hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_8; |
| 89 | 131 hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB; |
| 132 hspi1.Init.TIMode = SPI_TIMODE_DISABLED; | |
| 133 hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLED; //_DISABLED; _ENABLED; | |
| 134 hspi1.Init.CRCPolynomial = 7; | |
| 135 HAL_SPI_Init(&hspi1); | |
| 38 | 136 } |
| 137 | |
| 89 | 138 void MX_SPI_DeInit(void) { |
| 139 HAL_SPI_DeInit(&hspi1); | |
| 38 | 140 } |
| 141 | |
| 89 | 142 void HAL_SPI_MspInit(SPI_HandleTypeDef* hspi) { |
| 38 | 143 |
| 89 | 144 GPIO_InitTypeDef GPIO_InitStruct; |
| 38 | 145 |
| 89 | 146 if (hspi->Instance == SPI1) { |
| 147 // Peripheral clock enable | |
| 148 __SPI1_CLK_ENABLE(); | |
| 149 __GPIOA_CLK_ENABLE(); | |
| 38 | 150 //SPI1 GPIO Configuration |
| 151 //PA4 ------> SPI1_CS | |
| 152 //PA5 ------> SPI1_SCK | |
| 153 //PA6 ------> SPI1_MISO | |
| 154 //PA7 ------> SPI1_MOSI | |
| 89 | 155 |
| 156 GPIO_InitStruct.Pin = GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7; | |
| 38 | 157 // GPIO_InitStruct.Pin = GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7; |
| 89 | 158 GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; |
| 159 GPIO_InitStruct.Pull = GPIO_PULLUP; | |
|
124
4b355396557a
Change GPIO speed for SPI communication as recommended by STM32 Errata
Ideenmodellierer
parents:
120
diff
changeset
|
160 GPIO_InitStruct.Speed = GPIO_SPEED_FAST; /* Decision is based on errata which recommends FAST for GPIO at 90Mhz */ |
| 89 | 161 GPIO_InitStruct.Alternate = GPIO_AF5_SPI1; |
| 162 HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); | |
| 38 | 163 |
| 164 //##-3- Configure the DMA streams ########################################## | |
| 165 // Configure the DMA handler for Transmission process | |
| 89 | 166 hdma_tx.Instance = DMA2_Stream3; |
| 167 hdma_tx.Init.Channel = DMA_CHANNEL_3; | |
| 168 hdma_tx.Init.Direction = DMA_MEMORY_TO_PERIPH; | |
| 169 hdma_tx.Init.PeriphInc = DMA_PINC_DISABLE; | |
| 170 hdma_tx.Init.MemInc = DMA_MINC_ENABLE; | |
| 38 | 171 hdma_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE; |
| 89 | 172 hdma_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE; |
| 173 hdma_tx.Init.Mode = DMA_NORMAL; | |
| 174 hdma_tx.Init.Priority = DMA_PRIORITY_VERY_HIGH; | |
| 175 hdma_tx.Init.FIFOMode = DMA_FIFOMODE_DISABLE; | |
| 176 hdma_tx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL; | |
| 177 hdma_tx.Init.MemBurst = DMA_MBURST_INC4; | |
| 178 hdma_tx.Init.PeriphBurst = DMA_PBURST_INC4; | |
| 179 | |
| 180 HAL_DMA_Init(&hdma_tx); | |
| 181 | |
| 38 | 182 // Associate the initialized DMA handle to the the SPI handle |
| 183 __HAL_LINKDMA(hspi, hdmatx, hdma_tx); | |
| 89 | 184 |
| 38 | 185 // Configure the DMA handler for Transmission process |
| 89 | 186 hdma_rx.Instance = DMA2_Stream0; |
| 187 hdma_rx.Init.Channel = DMA_CHANNEL_3; | |
| 188 hdma_rx.Init.Direction = DMA_PERIPH_TO_MEMORY; | |
| 189 hdma_rx.Init.PeriphInc = DMA_PINC_DISABLE; | |
| 190 hdma_rx.Init.MemInc = DMA_MINC_ENABLE; | |
| 38 | 191 hdma_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE; |
| 89 | 192 hdma_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE; |
| 193 hdma_rx.Init.Mode = DMA_NORMAL; | |
| 194 hdma_rx.Init.Priority = DMA_PRIORITY_HIGH; | |
| 195 hdma_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE; | |
| 196 hdma_rx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL; | |
| 197 hdma_rx.Init.MemBurst = DMA_MBURST_INC4; | |
| 198 hdma_rx.Init.PeriphBurst = DMA_PBURST_INC4; | |
| 38 | 199 |
| 200 HAL_DMA_Init(&hdma_rx); | |
| 89 | 201 |
| 202 // Associate the initialized DMA handle to the the SPI handle | |
| 203 __HAL_LINKDMA(hspi, hdmarx, hdma_rx); | |
| 38 | 204 |
| 89 | 205 //##-4- Configure the NVIC for DMA ######################################### |
| 206 //NVIC configuration for DMA transfer complete interrupt (SPI3_RX) | |
| 207 HAL_NVIC_SetPriority(DMA2_Stream0_IRQn, 1, 0); | |
| 208 HAL_NVIC_EnableIRQ(DMA2_Stream0_IRQn); | |
| 209 | |
| 210 // NVIC configuration for DMA transfer complete interrupt (SPI1_TX) | |
| 211 HAL_NVIC_SetPriority(DMA2_Stream3_IRQn, 1, 1); | |
| 212 HAL_NVIC_EnableIRQ(DMA2_Stream3_IRQn); | |
| 213 } else if (hspi->Instance == SPI3) { | |
| 214 __GPIOC_CLK_ENABLE(); | |
| 215 __SPI3_CLK_ENABLE(); | |
| 38 | 216 |
| 217 //SPI1 GPIO Configuration | |
| 218 //PC10 ------> SPI3_SCK | |
| 219 //PC11 ------> SPI3_MISO | |
| 220 //PC12 ------> SPI3_MOSI | |
| 221 //PA15 ------> SPI3_NSS (official) | |
| 222 //PC9 ------> SPI3_NSS (hw) | |
| 89 | 223 |
| 224 GPIO_InitStruct.Pin = GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12; | |
| 225 GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; | |
| 226 GPIO_InitStruct.Pull = GPIO_PULLUP; | |
| 227 GPIO_InitStruct.Speed = GPIO_SPEED_FAST; | |
| 228 GPIO_InitStruct.Alternate = GPIO_AF6_SPI3; | |
| 229 HAL_GPIO_Init(GPIOC, &GPIO_InitStruct); | |
| 38 | 230 |
| 231 GPIO_InitStruct.Pin = GPIO_PIN_9; | |
| 232 GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; | |
| 233 GPIO_InitStruct.Pull = GPIO_PULLUP; | |
| 234 GPIO_InitStruct.Speed = GPIO_SPEED_LOW; | |
| 89 | 235 HAL_GPIO_Init(GPIOC, &GPIO_InitStruct); |
| 38 | 236 |
| 89 | 237 HAL_GPIO_WritePin(GPIOC, GPIO_PIN_9, GPIO_PIN_SET); |
| 38 | 238 } |
| 239 } | |
| 240 | |
| 89 | 241 void HAL_SPI_MspDeInit(SPI_HandleTypeDef* hspi) { |
| 242 if (hspi->Instance == SPI1) { | |
| 38 | 243 __SPI1_FORCE_RESET(); |
| 244 __SPI1_RELEASE_RESET(); | |
| 245 | |
| 246 //SPI1 GPIO Configuration | |
| 247 //PA5 ------> SPI1_SCK | |
| 248 //PA6 ------> SPI1_MISO | |
| 249 //PA7 ------> SPI1_MOSI | |
| 89 | 250 |
| 251 HAL_GPIO_DeInit(GPIOA, GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7); | |
| 38 | 252 |
| 253 HAL_DMA_DeInit(&hdma_tx); | |
| 254 HAL_DMA_DeInit(&hdma_rx); | |
| 89 | 255 |
| 38 | 256 HAL_NVIC_DisableIRQ(DMA2_Stream3_IRQn); |
| 257 HAL_NVIC_DisableIRQ(DMA2_Stream0_IRQn); | |
| 89 | 258 } else if (hspi->Instance == SPI3) { |
| 38 | 259 __SPI3_FORCE_RESET(); |
| 260 __SPI3_RELEASE_RESET(); | |
| 261 | |
| 262 //SPI1 GPIO Configuration | |
| 263 //PC10 ------> SPI3_SCK | |
| 264 //PC11 ------> SPI3_MISO | |
| 265 //PC12 ------> SPI3_MOSI | |
| 266 //PA15 ------> SPI3_NSS (official) | |
| 267 //PC9 ------> SPI3_NSS (hw) | |
| 89 | 268 HAL_GPIO_DeInit(GPIOC, GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12); |
| 38 | 269 } |
| 270 } | |
| 271 | |
| 89 | 272 void SPI_synchronize_with_Master(void) { |
| 273 // GPIO_InitTypeDef GPIO_InitStruct; | |
| 274 // | |
| 275 // __GPIOA_CLK_ENABLE(); | |
| 276 // /**SPI1 GPIO Configuration | |
| 277 // PA5 ------> SPI1_SCK | |
| 278 // */ | |
| 279 // GPIO_InitStruct.Pin = GPIO_PIN_4 | GPIO_PIN_5; | |
| 280 // GPIO_InitStruct.Mode = GPIO_MODE_INPUT; | |
| 281 // GPIO_InitStruct.Pull = GPIO_PULLUP; | |
| 282 // GPIO_InitStruct.Speed = GPIO_SPEED_LOW; | |
| 283 // HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); | |
| 284 // | |
| 285 // HAL_Delay(10); | |
| 286 // while (HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_4) == 0); | |
| 287 // HAL_Delay(10); | |
| 288 // while (HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_5) == 1); | |
| 289 // HAL_Delay(20); | |
| 38 | 290 } |
| 291 | |
| 89 | 292 void SPI_Start_single_TxRx_with_Master(void) { |
| 38 | 293 uint8_t * pOutput; |
| 294 | |
| 89 | 295 if (global.dataSendToSlave.getDeviceDataNow) { |
| 38 | 296 global.dataSendToSlave.getDeviceDataNow = 0; |
| 89 | 297 pOutput = (uint8_t*) &(global.deviceDataSendToMaster); |
| 298 } else { | |
| 299 pOutput = (uint8_t*) &(global.dataSendToMaster); | |
| 38 | 300 } |
| 301 | |
| 89 | 302 if (HAL_SPI_TransmitReceive_DMA(&hspi1, pOutput,(uint8_t*) &(global.dataSendToSlave), EXCHANGE_BUFFERSIZE)!= HAL_OK) { |
| 303 // Transfer error in transmission process | |
| 38 | 304 SPI_Error_Handler(); |
| 305 } | |
| 306 } | |
| 307 | |
| 89 | 308 void HAL_SPI_TxRxCpltCallback(SPI_HandleTypeDef *hspi) { |
| 309 /* restart SPI */ | |
| 310 if (hspi == &hspi1) { | |
| 38 | 311 |
| 89 | 312 global.check_sync_not_running = 0; |
| 313 /* stop data exchange? */ | |
| 314 if (global.mode == MODE_SHUTDOWN) { | |
| 315 global.mode = MODE_SLEEP; | |
| 316 global.dataSendToSlavePending = 0; | |
| 317 global.dataSendToSlaveIsValid = 1; | |
| 318 global.dataSendToSlaveIsNotValidCount = 0; | |
| 319 return; | |
| 320 } | |
| 82 | 321 |
| 89 | 322 /* data consistent? */ |
| 323 if (SPI_check_header_and_footer_ok()) { | |
| 324 // GPIO_new_DEBUG_HIGH(); //For debug. | |
| 325 global.dataSendToSlaveIsValid = 1; | |
| 326 global.dataSendToSlaveIsNotValidCount = 0; | |
| 327 } else { | |
| 328 // GPIO_new_DEBUG_LOW(); //For debug. | |
| 329 global.dataSendToSlaveIsValid = 0; | |
| 330 global.dataSendToSlaveIsNotValidCount++; | |
| 104 | 331 MX_SPI_DeInit(); |
| 332 HAL_Delay(30); | |
| 333 MX_DMA_Init(); | |
| 334 MX_SPI1_Init(); | |
| 89 | 335 } |
| 336 global.dataSendToMaster.power_on_reset = 0; | |
| 337 global.deviceDataSendToMaster.power_on_reset = 0; | |
| 338 | |
| 104 | 339 //TODO:REMOVE |
| 89 | 340 // if ( !global.dataSendToSlaveStopEval ) { |
| 341 // scheduleSpecial_Evaluate_DataSendToSlave(); | |
| 342 // } | |
| 343 scheduleSpecial_Evaluate_DataSendToSlave(); | |
| 104 | 344 SPI_Start_single_TxRx_with_Master(); //Send data always. |
| 38 | 345 } |
| 346 } | |
| 347 | |
| 89 | 348 static uint8_t SPI_check_header_and_footer_ok(void) { |
| 349 if (global.dataSendToSlave.header.checkCode[0] != 0xBB) | |
| 38 | 350 return 0; |
| 89 | 351 if (global.dataSendToSlave.header.checkCode[1] != 0x01) |
| 38 | 352 return 0; |
| 89 | 353 if (global.dataSendToSlave.header.checkCode[2] != 0x01) |
| 38 | 354 return 0; |
| 89 | 355 if (global.dataSendToSlave.header.checkCode[3] != 0xBB) |
| 38 | 356 return 0; |
| 89 | 357 if (global.dataSendToSlave.footer.checkCode[0] != 0xF4) |
| 38 | 358 return 0; |
| 89 | 359 if (global.dataSendToSlave.footer.checkCode[1] != 0xF3) |
| 38 | 360 return 0; |
| 89 | 361 if (global.dataSendToSlave.footer.checkCode[2] != 0xF2) |
| 38 | 362 return 0; |
| 89 | 363 if (global.dataSendToSlave.footer.checkCode[3] != 0xF1) |
| 38 | 364 return 0; |
| 365 | |
| 366 return 1; | |
| 367 } | |
| 368 | |
| 89 | 369 static void SPI_Error_Handler(void) { |
| 82 | 370 //The device is locks. Hard to recover. |
| 371 // while(1) | |
| 372 // { | |
| 373 // } | |
| 38 | 374 } |
| 375 | |
| 376 /** | |
| 89 | 377 * @} |
| 378 */ | |
| 38 | 379 |
| 380 /** | |
| 89 | 381 * @} |
| 382 */ | |
| 38 | 383 |
| 384 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |