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 ------------------------------------------------------------------*/
143
+ − 23
+ − 24 #include "global_constants.h"
38
+ − 25 #include "spi.h"
120
+ − 26 #include "dma.h"
143
+ − 27
38
+ − 28 //#include "gpio.h"
+ − 29
+ − 30 /* USER CODE BEGIN 0 */
+ − 31 #include "scheduler.h"
+ − 32
120
+ − 33 #ifdef DEBUG_GPIO
38
+ − 34 extern void GPIO_new_DEBUG_LOW(void);
+ − 35 extern void GPIO_new_DEBUG_HIGH(void);
120
+ − 36 #endif
38
+ − 37
89
+ − 38 uint8_t data_error = 0;
+ − 39 uint32_t data_error_time = 0;
143
+ − 40 uint8_t SPIDataRX = 0; /* Flag to signal that SPI RX callback has been triggered */
38
+ − 41
+ − 42 static void SPI_Error_Handler(void);
+ − 43
+ − 44 /* USER CODE END 0 */
+ − 45
+ − 46 static uint8_t SPI_check_header_and_footer_ok(void);
143
+ − 47 static uint8_t DataEX_check_header_and_footer_shifted(void);
38
+ − 48
+ − 49 SPI_HandleTypeDef hspi1;
+ − 50 SPI_HandleTypeDef hspi3;
+ − 51
+ − 52 DMA_HandleTypeDef hdma_tx;
+ − 53 DMA_HandleTypeDef hdma_rx;
+ − 54
+ − 55 // SPI3 init function
89
+ − 56 void MX_SPI3_Init(void) {
+ − 57 hspi3.Instance = SPI3;
+ − 58 hspi3.Init.Mode = SPI_MODE_MASTER;
+ − 59 hspi3.Init.Direction = SPI_DIRECTION_2LINES;
+ − 60 hspi3.Init.DataSize = SPI_DATASIZE_8BIT;
+ − 61 hspi3.Init.CLKPolarity = SPI_POLARITY_HIGH;
+ − 62 hspi3.Init.CLKPhase = SPI_PHASE_1EDGE;
+ − 63 hspi3.Init.NSS = SPI_NSS_SOFT;
+ − 64 hspi3.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_256;
+ − 65 hspi3.Init.FirstBit = SPI_FIRSTBIT_MSB;
+ − 66 hspi3.Init.TIMode = SPI_TIMODE_DISABLED;
+ − 67 hspi3.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLED;
+ − 68 hspi3.Init.CRCPolynomial = 7;
+ − 69 HAL_SPI_Init(&hspi3);
38
+ − 70 }
+ − 71
89
+ − 72 void MX_SPI3_DeInit(void) {
+ − 73 HAL_SPI_DeInit(&hspi3);
38
+ − 74 }
+ − 75
89
+ − 76 uint8_t SPI3_ButtonAdjust(uint8_t *arrayInput, uint8_t *arrayOutput) {
38
+ − 77 HAL_StatusTypeDef status;
+ − 78 uint8_t answer[10];
+ − 79 uint8_t rework[10];
+ − 80
+ − 81 rework[0] = 0xFF;
89
+ − 82 for (int i = 0; i < 3; i++) {
38
+ − 83 // limiter
89
+ − 84 if (arrayInput[i] == 0xFF)
38
+ − 85 arrayInput[i] = 0xFE;
89
+ − 86 if (arrayInput[i] >= 15) {
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] - 10;
+ − 91 } else if (arrayInput[i] >= 10) {
82
+ − 92 // copy - ausl�se-schwelle
89
+ − 93 rework[i + 1] = arrayInput[i];
38
+ − 94 // wieder-scharf-schalte-schwelle
89
+ − 95 rework[i + 3 + 1] = arrayInput[i] - 5;
+ − 96 } else {
82
+ − 97 // copy - ausl�se-schwelle
89
+ − 98 rework[i + 1] = 7;
38
+ − 99 // wieder-scharf-schalte-schwelle
89
+ − 100 rework[i + 3 + 1] = 6;
38
+ − 101 }
+ − 102 }
+ − 103
+ − 104 status = HAL_OK; /* = 0 */
89
+ − 105 HAL_GPIO_WritePin(GPIOC, GPIO_PIN_9, GPIO_PIN_SET);
+ − 106 for (int i = 0; i < 7; i++) {
+ − 107 HAL_Delay(10);
+ − 108 HAL_GPIO_WritePin(GPIOC, GPIO_PIN_9, GPIO_PIN_RESET);
63
+ − 109 HAL_Delay(10);
89
+ − 110 status += HAL_SPI_TransmitReceive(&hspi3, &rework[i], &answer[i], 1,
+ − 111 20);
63
+ − 112 HAL_Delay(10);
89
+ − 113 HAL_GPIO_WritePin(GPIOC, GPIO_PIN_9, GPIO_PIN_SET);
38
+ − 114 }
89
+ − 115
+ − 116 if (status == HAL_OK) {
+ − 117 for (int i = 0; i < 3; i++) {
+ − 118 arrayOutput[i] = answer[i + 2]; // first not, return of 0xFF not
+ − 119 }
38
+ − 120 return 1;
89
+ − 121 } else
+ − 122
38
+ − 123 return 0;
+ − 124 }
+ − 125
+ − 126 // SPI5 init function
89
+ − 127 void MX_SPI1_Init(void) {
+ − 128 hspi1.Instance = SPI1;
+ − 129 hspi1.Init.Mode = SPI_MODE_SLAVE;
+ − 130 hspi1.Init.Direction = SPI_DIRECTION_2LINES;
+ − 131 hspi1.Init.DataSize = SPI_DATASIZE_8BIT;
+ − 132 hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;
+ − 133 hspi1.Init.CLKPhase = SPI_PHASE_1EDGE;
+ − 134 hspi1.Init.NSS = SPI_NSS_HARD_INPUT; //SPI_NSS_SOFT;
148
+ − 135 hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_128;
89
+ − 136 hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
+ − 137 hspi1.Init.TIMode = SPI_TIMODE_DISABLED;
+ − 138 hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLED; //_DISABLED; _ENABLED;
+ − 139 hspi1.Init.CRCPolynomial = 7;
+ − 140 HAL_SPI_Init(&hspi1);
38
+ − 141 }
+ − 142
89
+ − 143 void MX_SPI_DeInit(void) {
+ − 144 HAL_SPI_DeInit(&hspi1);
38
+ − 145 }
+ − 146
89
+ − 147 void HAL_SPI_MspInit(SPI_HandleTypeDef* hspi) {
38
+ − 148
89
+ − 149 GPIO_InitTypeDef GPIO_InitStruct;
38
+ − 150
89
+ − 151 if (hspi->Instance == SPI1) {
148
+ − 152 SPIDataRX = 0;
89
+ − 153 // Peripheral clock enable
+ − 154 __SPI1_CLK_ENABLE();
+ − 155 __GPIOA_CLK_ENABLE();
38
+ − 156 //SPI1 GPIO Configuration
+ − 157 //PA4 ------> SPI1_CS
+ − 158 //PA5 ------> SPI1_SCK
+ − 159 //PA6 ------> SPI1_MISO
+ − 160 //PA7 ------> SPI1_MOSI
89
+ − 161
+ − 162 GPIO_InitStruct.Pin = GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7;
38
+ − 163 // GPIO_InitStruct.Pin = GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7;
89
+ − 164 GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+ − 165 GPIO_InitStruct.Pull = GPIO_PULLUP;
124
+ − 166 GPIO_InitStruct.Speed = GPIO_SPEED_FAST; /* Decision is based on errata which recommends FAST for GPIO at 90Mhz */
89
+ − 167 GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
+ − 168 HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
38
+ − 169
+ − 170 //##-3- Configure the DMA streams ##########################################
+ − 171 // Configure the DMA handler for Transmission process
89
+ − 172 hdma_tx.Instance = DMA2_Stream3;
+ − 173 hdma_tx.Init.Channel = DMA_CHANNEL_3;
+ − 174 hdma_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
+ − 175 hdma_tx.Init.PeriphInc = DMA_PINC_DISABLE;
+ − 176 hdma_tx.Init.MemInc = DMA_MINC_ENABLE;
38
+ − 177 hdma_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
89
+ − 178 hdma_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
+ − 179 hdma_tx.Init.Mode = DMA_NORMAL;
+ − 180 hdma_tx.Init.Priority = DMA_PRIORITY_VERY_HIGH;
+ − 181 hdma_tx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
+ − 182 hdma_tx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
+ − 183 hdma_tx.Init.MemBurst = DMA_MBURST_INC4;
+ − 184 hdma_tx.Init.PeriphBurst = DMA_PBURST_INC4;
+ − 185
+ − 186 HAL_DMA_Init(&hdma_tx);
+ − 187
38
+ − 188 // Associate the initialized DMA handle to the the SPI handle
+ − 189 __HAL_LINKDMA(hspi, hdmatx, hdma_tx);
89
+ − 190
38
+ − 191 // Configure the DMA handler for Transmission process
89
+ − 192 hdma_rx.Instance = DMA2_Stream0;
+ − 193 hdma_rx.Init.Channel = DMA_CHANNEL_3;
+ − 194 hdma_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
+ − 195 hdma_rx.Init.PeriphInc = DMA_PINC_DISABLE;
+ − 196 hdma_rx.Init.MemInc = DMA_MINC_ENABLE;
38
+ − 197 hdma_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
89
+ − 198 hdma_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
+ − 199 hdma_rx.Init.Mode = DMA_NORMAL;
+ − 200 hdma_rx.Init.Priority = DMA_PRIORITY_HIGH;
+ − 201 hdma_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
+ − 202 hdma_rx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
+ − 203 hdma_rx.Init.MemBurst = DMA_MBURST_INC4;
+ − 204 hdma_rx.Init.PeriphBurst = DMA_PBURST_INC4;
38
+ − 205
+ − 206 HAL_DMA_Init(&hdma_rx);
89
+ − 207
+ − 208 // Associate the initialized DMA handle to the the SPI handle
+ − 209 __HAL_LINKDMA(hspi, hdmarx, hdma_rx);
38
+ − 210
89
+ − 211 //##-4- Configure the NVIC for DMA #########################################
+ − 212 //NVIC configuration for DMA transfer complete interrupt (SPI3_RX)
+ − 213 HAL_NVIC_SetPriority(DMA2_Stream0_IRQn, 1, 0);
+ − 214 HAL_NVIC_EnableIRQ(DMA2_Stream0_IRQn);
+ − 215
+ − 216 // NVIC configuration for DMA transfer complete interrupt (SPI1_TX)
+ − 217 HAL_NVIC_SetPriority(DMA2_Stream3_IRQn, 1, 1);
+ − 218 HAL_NVIC_EnableIRQ(DMA2_Stream3_IRQn);
+ − 219 } else if (hspi->Instance == SPI3) {
+ − 220 __GPIOC_CLK_ENABLE();
+ − 221 __SPI3_CLK_ENABLE();
38
+ − 222
+ − 223 //SPI1 GPIO Configuration
+ − 224 //PC10 ------> SPI3_SCK
+ − 225 //PC11 ------> SPI3_MISO
+ − 226 //PC12 ------> SPI3_MOSI
+ − 227 //PA15 ------> SPI3_NSS (official)
+ − 228 //PC9 ------> SPI3_NSS (hw)
89
+ − 229
+ − 230 GPIO_InitStruct.Pin = GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12;
+ − 231 GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+ − 232 GPIO_InitStruct.Pull = GPIO_PULLUP;
+ − 233 GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
+ − 234 GPIO_InitStruct.Alternate = GPIO_AF6_SPI3;
+ − 235 HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
38
+ − 236
+ − 237 GPIO_InitStruct.Pin = GPIO_PIN_9;
+ − 238 GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
+ − 239 GPIO_InitStruct.Pull = GPIO_PULLUP;
+ − 240 GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
89
+ − 241 HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
38
+ − 242
89
+ − 243 HAL_GPIO_WritePin(GPIOC, GPIO_PIN_9, GPIO_PIN_SET);
38
+ − 244 }
+ − 245 }
+ − 246
89
+ − 247 void HAL_SPI_MspDeInit(SPI_HandleTypeDef* hspi) {
+ − 248 if (hspi->Instance == SPI1) {
38
+ − 249 __SPI1_FORCE_RESET();
+ − 250 __SPI1_RELEASE_RESET();
+ − 251
+ − 252 //SPI1 GPIO Configuration
+ − 253 //PA5 ------> SPI1_SCK
+ − 254 //PA6 ------> SPI1_MISO
+ − 255 //PA7 ------> SPI1_MOSI
89
+ − 256
+ − 257 HAL_GPIO_DeInit(GPIOA, GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7);
38
+ − 258
+ − 259 HAL_DMA_DeInit(&hdma_tx);
+ − 260 HAL_DMA_DeInit(&hdma_rx);
89
+ − 261
38
+ − 262 HAL_NVIC_DisableIRQ(DMA2_Stream3_IRQn);
+ − 263 HAL_NVIC_DisableIRQ(DMA2_Stream0_IRQn);
89
+ − 264 } else if (hspi->Instance == SPI3) {
38
+ − 265 __SPI3_FORCE_RESET();
+ − 266 __SPI3_RELEASE_RESET();
+ − 267
+ − 268 //SPI1 GPIO Configuration
+ − 269 //PC10 ------> SPI3_SCK
+ − 270 //PC11 ------> SPI3_MISO
+ − 271 //PC12 ------> SPI3_MOSI
+ − 272 //PA15 ------> SPI3_NSS (official)
+ − 273 //PC9 ------> SPI3_NSS (hw)
89
+ − 274 HAL_GPIO_DeInit(GPIOC, GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12);
38
+ − 275 }
+ − 276 }
+ − 277
89
+ − 278 void SPI_synchronize_with_Master(void) {
148
+ − 279 #ifdef USE_OLD_SYNC_METHOD
136
+ − 280 GPIO_InitTypeDef GPIO_InitStruct;
89
+ − 281 //
136
+ − 282 __GPIOA_CLK_ENABLE();
+ − 283 /**SPI1 GPIO Configuration
+ − 284 PA5 ------> SPI1_SCK
+ − 285 */
+ − 286 GPIO_InitStruct.Pin = GPIO_PIN_4 | GPIO_PIN_5;
+ − 287 GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
+ − 288 GPIO_InitStruct.Pull = GPIO_PULLUP;
148
+ − 289 GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
136
+ − 290 HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
89
+ − 291 //
136
+ − 292 HAL_Delay(10);
+ − 293 while (HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_4) == 0);
+ − 294 HAL_Delay(10);
+ − 295 while (HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_5) == 1);
148
+ − 296 HAL_Delay(50);
136
+ − 297 #endif
38
+ − 298 }
+ − 299
89
+ − 300 void SPI_Start_single_TxRx_with_Master(void) {
38
+ − 301 uint8_t * pOutput;
136
+ − 302 HAL_StatusTypeDef retval;
38
+ − 303
89
+ − 304 if (global.dataSendToSlave.getDeviceDataNow) {
38
+ − 305 global.dataSendToSlave.getDeviceDataNow = 0;
89
+ − 306 pOutput = (uint8_t*) &(global.deviceDataSendToMaster);
+ − 307 } else {
+ − 308 pOutput = (uint8_t*) &(global.dataSendToMaster);
38
+ − 309 }
136
+ − 310 retval = HAL_SPI_TransmitReceive_DMA(&hspi1, pOutput,(uint8_t*) &(global.dataSendToSlave), EXCHANGE_BUFFERSIZE);
+ − 311 if ( retval!= HAL_OK) {
38
+ − 312 SPI_Error_Handler();
+ − 313 }
+ − 314 }
+ − 315
89
+ − 316 void HAL_SPI_TxRxCpltCallback(SPI_HandleTypeDef *hspi) {
+ − 317 /* restart SPI */
136
+ − 318 if (hspi == &hspi1)
+ − 319 {
264
+ − 320 if(SPI_check_header_and_footer_ok()) /* process timestamp provided by main */
+ − 321 {
+ − 322 Scheduler_SyncToSPI(global.dataSendToSlave.header.checkCode[SPI_HEADER_INDEX_TX_TICK]);
+ − 323 }
+ − 324 else
+ − 325 {
+ − 326 Scheduler_SyncToSPI(0); /* => no async will be calculated */
+ − 327 }
+ − 328
143
+ − 329 SPIDataRX = 1;
+ − 330
89
+ − 331 /* stop data exchange? */
+ − 332 if (global.mode == MODE_SHUTDOWN) {
+ − 333 global.mode = MODE_SLEEP;
+ − 334 global.dataSendToSlavePending = 0;
+ − 335 global.dataSendToSlaveIsValid = 1;
+ − 336 global.dataSendToSlaveIsNotValidCount = 0;
+ − 337 }
143
+ − 338 }
+ − 339 }
82
+ − 340
264
+ − 341 uint8_t SPI_Evaluate_RX_Data()
143
+ − 342 {
208
+ − 343 uint8_t resettimeout = 1;
264
+ − 344 uint8_t ret = SPIDataRX;
208
+ − 345
143
+ − 346 if ((global.mode != MODE_SHUTDOWN) && ( global.mode != MODE_SLEEP) && (SPIDataRX))
+ − 347 {
+ − 348 SPIDataRX = 0;
89
+ − 349 /* data consistent? */
+ − 350 if (SPI_check_header_and_footer_ok()) {
208
+ − 351 global.dataSendToMaster.header.checkCode[SPI_HEADER_INDEX_RX_STATE] = SPI_RX_STATE_OK;
143
+ − 352 // GPIO_new_DEBUG_HIGH(); //For debug.
89
+ − 353 global.dataSendToSlaveIsValid = 1;
+ − 354 global.dataSendToSlaveIsNotValidCount = 0;
208
+ − 355 /* Master signal a data shift outside of his control => reset own DMA and resync */
+ − 356 if(global.dataSendToSlave.header.checkCode[SPI_HEADER_INDEX_RX_STATE] == SPI_RX_STATE_SHIFTED)
143
+ − 357 {
+ − 358 HAL_SPI_Abort_IT(&hspi1);
208
+ − 359 Scheduler_Request_sync_with_SPI(SPI_SYNC_METHOD_HARD);
143
+ − 360 }
277
+ − 361 else
+ − 362 {
+ − 363 }
+ − 364 SPI_Start_single_TxRx_with_Master();
208
+ − 365 }
+ − 366 else
+ − 367 {
143
+ − 368 // GPIO_new_DEBUG_LOW(); //For debug.
136
+ − 369 global.dataSendToSlaveIsValid = 0;
+ − 370 global.dataSendToSlaveIsNotValidCount++;
143
+ − 371 if(DataEX_check_header_and_footer_shifted())
+ − 372 {
208
+ − 373
+ − 374 /* Reset own DMA */
+ − 375 if ((global.dataSendToSlaveIsNotValidCount % 10) == 1) //% 10
143
+ − 376 {
+ − 377 HAL_SPI_Abort_IT(&hspi1); /* reset DMA only once */
+ − 378 }
208
+ − 379 /* Signal problem to master */
+ − 380 if ((global.dataSendToSlaveIsNotValidCount ) >= 2)
+ − 381 {
+ − 382 global.dataSendToMaster.header.checkCode[SPI_HEADER_INDEX_RX_STATE] = SPI_RX_STATE_SHIFTED;
+ − 383 }
143
+ − 384 }
208
+ − 385 else /* handle received data as if no data would have been received */
+ − 386 {
+ − 387 global.dataSendToMaster.header.checkCode[SPI_HEADER_INDEX_RX_STATE] = SPI_RX_STATE_OFFLINE;
+ − 388 resettimeout = 0;
+ − 389 }
277
+ − 390 HAL_SPI_TransmitReceive_DMA(&hspi1,(uint8_t*) &(global.dataSendToMaster),(uint8_t*) &(global.dataSendToSlave), EXCHANGE_BUFFERSIZE);
208
+ − 391 }
143
+ − 392
89
+ − 393 global.dataSendToMaster.power_on_reset = 0;
+ − 394 global.deviceDataSendToMaster.power_on_reset = 0;
+ − 395
143
+ − 396 scheduleSpecial_Evaluate_DataSendToSlave();
136
+ − 397
264
+ − 398 if(resettimeout)
+ − 399 {
+ − 400 global.check_sync_not_running = 0;
+ − 401 }
208
+ − 402 }
264
+ − 403 return ret;
38
+ − 404 }
+ − 405
89
+ − 406 static uint8_t SPI_check_header_and_footer_ok(void) {
+ − 407 if (global.dataSendToSlave.header.checkCode[0] != 0xBB)
38
+ − 408 return 0;
148
+ − 409 #ifdef USE_OLD_HEADER_FORMAT
89
+ − 410 if (global.dataSendToSlave.header.checkCode[1] != 0x01)
38
+ − 411 return 0;
89
+ − 412 if (global.dataSendToSlave.header.checkCode[2] != 0x01)
38
+ − 413 return 0;
143
+ − 414 #endif
89
+ − 415 if (global.dataSendToSlave.header.checkCode[3] != 0xBB)
38
+ − 416 return 0;
89
+ − 417 if (global.dataSendToSlave.footer.checkCode[0] != 0xF4)
38
+ − 418 return 0;
89
+ − 419 if (global.dataSendToSlave.footer.checkCode[1] != 0xF3)
38
+ − 420 return 0;
89
+ − 421 if (global.dataSendToSlave.footer.checkCode[2] != 0xF2)
38
+ − 422 return 0;
89
+ − 423 if (global.dataSendToSlave.footer.checkCode[3] != 0xF1)
38
+ − 424 return 0;
+ − 425
+ − 426 return 1;
+ − 427 }
+ − 428
143
+ − 429
+ − 430 /* Check if there is an empty frame providec by RTE (all 0) or even no data provided by RTE (all 0xFF)
+ − 431 * If that is not the case the DMA is somehow not in sync
+ − 432 */
+ − 433 uint8_t DataEX_check_header_and_footer_shifted()
+ − 434 {
+ − 435 uint8_t ret = 1;
+ − 436 if((global.dataSendToSlave.footer.checkCode[0] == 0x00)
+ − 437 && (global.dataSendToSlave.footer.checkCode[1] == 0x00)
+ − 438 && (global.dataSendToSlave.footer.checkCode[2] == 0x00)
+ − 439 && (global.dataSendToSlave.footer.checkCode[3] == 0x00)) { ret = 0; }
+ − 440
+ − 441 if((global.dataSendToSlave.footer.checkCode[0] == 0xff)
+ − 442 && (global.dataSendToSlave.footer.checkCode[1] == 0xff)
+ − 443 && (global.dataSendToSlave.footer.checkCode[2] == 0xff)
+ − 444 && (global.dataSendToSlave.footer.checkCode[3] == 0xff)) { ret = 0; }
+ − 445
+ − 446 return ret;
+ − 447 }
+ − 448
89
+ − 449 static void SPI_Error_Handler(void) {
82
+ − 450 //The device is locks. Hard to recover.
+ − 451 // while(1)
+ − 452 // {
+ − 453 // }
38
+ − 454 }
+ − 455
+ − 456 /**
89
+ − 457 * @}
+ − 458 */
38
+ − 459
+ − 460 /**
89
+ − 461 * @}
+ − 462 */
38
+ − 463
+ − 464 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/