Mercurial > public > ostc4
annotate Small_CPU/Src/spi.c @ 322:31e471d60797 O2_SensorSync
Added start of frame detection for HUD data
In the previous impmenentation the reception and evaluation of 15 byte were used without start detection. As a result sensor data could be stuck in case the frame sequence does not match the structure (e.g. cause by an framing error).
To resolve this in case of an invalid checksumme in combination with a data lost detection a byte based reception is startet to detect the start of a frame using the break between two transmissions.
In addition a babbling idiot protecting has been added because a faulty hardware could have an impact on the OSTC operation (high interrupt load)
| author | ideenmodellierer |
|---|---|
| date | Sun, 30 Jun 2019 21:25:58 +0200 |
| parents | 580822b5d3d1 |
| children | 2fc08a0d1ec3 |
| 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 ------------------------------------------------------------------*/ | |
| 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; | |
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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) { |
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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; | |
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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) { |
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279 #ifdef USE_OLD_SYNC_METHOD |
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280 GPIO_InitTypeDef GPIO_InitStruct; |
| 89 | 281 // |
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282 __GPIOA_CLK_ENABLE(); |
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283 /**SPI1 GPIO Configuration |
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284 PA5 ------> SPI1_SCK |
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285 */ |
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286 GPIO_InitStruct.Pin = GPIO_PIN_4 | GPIO_PIN_5; |
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287 GPIO_InitStruct.Mode = GPIO_MODE_INPUT; |
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288 GPIO_InitStruct.Pull = GPIO_PULLUP; |
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289 GPIO_InitStruct.Speed = GPIO_SPEED_FAST; |
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290 HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); |
| 89 | 291 // |
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292 HAL_Delay(10); |
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293 while (HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_4) == 0); |
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294 HAL_Delay(10); |
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295 while (HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_5) == 1); |
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296 HAL_Delay(50); |
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297 #endif |
| 38 | 298 } |
| 299 | |
| 89 | 300 void SPI_Start_single_TxRx_with_Master(void) { |
| 38 | 301 uint8_t * pOutput; |
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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 } |
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310 retval = HAL_SPI_TransmitReceive_DMA(&hspi1, pOutput,(uint8_t*) &(global.dataSendToSlave), EXCHANGE_BUFFERSIZE); |
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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 */ | |
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318 if (hspi == &hspi1) |
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319 { |
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320 if(SPI_check_header_and_footer_ok()) /* process timestamp provided by main */ |
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321 { |
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322 Scheduler_SyncToSPI(global.dataSendToSlave.header.checkCode[SPI_HEADER_INDEX_TX_TICK]); |
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323 } |
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324 else |
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325 { |
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326 Scheduler_SyncToSPI(0); /* => no async will be calculated */ |
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327 } |
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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 |
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341 uint8_t SPI_Evaluate_RX_Data() |
| 143 | 342 { |
| 208 | 343 uint8_t resettimeout = 1; |
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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. |
|
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369 global.dataSendToSlaveIsValid = 0; |
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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(); |
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397 |
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398 if(resettimeout) |
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399 { |
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400 global.check_sync_not_running = 0; |
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401 } |
| 208 | 402 } |
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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; |
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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****/ |