Mercurial > public > ostc4
annotate Small_CPU/Src/uart.c @ 707:e81afd727993
Menu cleanup rebreather specific settings:
In the previous version the selection for Fix setpoint or sensor was in the deco menu and the Fallback option in the hardware menu. As they have a dependency and are only relevant for rebreather operation, they have been moved into the extra menu which is containing rebreather related data and which is only visible in rebreather mode.
| author | Ideenmodellierer |
|---|---|
| date | Thu, 03 Nov 2022 20:44:21 +0100 |
| parents | f1b40364b0af |
| children | 045ff7800501 |
| rev | line source |
|---|---|
| 38 | 1 /** |
| 2 ****************************************************************************** | |
| 3 * @file uart.c | |
| 4 * @author heinrichs weikamp gmbh | |
| 5 * @version V0.0.1 | |
| 6 * @date 27-March-2014 | |
| 7 * @brief button control | |
| 8 * | |
| 9 @verbatim | |
| 10 ============================================================================== | |
| 11 ##### How to use ##### | |
| 12 ============================================================================== | |
| 13 @endverbatim | |
| 14 ****************************************************************************** | |
| 15 * @attention | |
| 16 * | |
| 17 * <h2><center>© COPYRIGHT(c) 2015 heinrichs weikamp</center></h2> | |
| 18 * | |
| 19 ****************************************************************************** | |
| 20 */ | |
| 21 /* Includes ------------------------------------------------------------------*/ | |
| 22 #include "uart.h" | |
| 662 | 23 #include "externalInterface.h" |
| 24 #include "data_exchange.h" | |
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25 #include <string.h> /* memset */ |
| 38 | 26 |
| 27 /* Private variables ---------------------------------------------------------*/ | |
| 28 | |
| 662 | 29 #define CHUNK_SIZE (20u) /* the DMA will handle chunk size transfers */ |
| 30 #define CHUNKS_PER_BUFFER (3u) | |
| 31 UART_HandleTypeDef huart1; | |
| 32 | |
| 33 DMA_HandleTypeDef hdma_usart1_rx; | |
| 38 | 34 |
| 662 | 35 uint8_t rxBuffer[CHUNK_SIZE * CHUNKS_PER_BUFFER]; /* The complete buffer has a X * chunk size to allow fariations in buffer read time */ |
| 36 static uint8_t rxWriteIndex; /* Index of the data item which is analysed */ | |
| 37 static uint8_t rxReadIndex; /* Index at which new data is stared */ | |
| 38 static uint8_t lastCmdIndex; /* Index of last command which has not been completly received */ | |
| 39 static uint8_t dmaActive; /* Indicator if DMA receiption needs to be started */ | |
| 38 | 40 |
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41 char tmpRxBuf[30]; |
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42 uint8_t tmpRxIdx = 0; |
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43 |
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44 static uartO2Status_t Comstatus_O2 = UART_O2_INIT; |
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45 |
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46 static uint32_t DigitalO2ID = 0; |
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47 |
| 662 | 48 float LED_Level = 0.0; /* Normalized LED value which may be used as indication for the health status of the sensor */ |
| 49 float LED_ZeroOffset = 0.0; | |
| 50 float pCO2 = 0.0; | |
| 38 | 51 /* Exported functions --------------------------------------------------------*/ |
| 52 | |
| 662 | 53 void MX_USART1_UART_Init(void) |
| 38 | 54 { |
| 662 | 55 /* regular init */ |
| 56 | |
| 57 huart1.Instance = USART1; | |
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58 |
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59 if(externalInterface_GetUARTProtocol() == 0x04) |
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60 { |
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61 huart1.Init.BaudRate = 19200; |
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62 Comstatus_O2 = UART_O2_INIT; |
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63 } |
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64 else |
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65 { |
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66 huart1.Init.BaudRate = 9600; |
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67 } |
| 662 | 68 huart1.Init.WordLength = UART_WORDLENGTH_8B; |
| 69 huart1.Init.StopBits = UART_STOPBITS_1; | |
| 70 huart1.Init.Parity = UART_PARITY_NONE; | |
| 71 huart1.Init.Mode = UART_MODE_TX_RX; | |
| 72 huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE; | |
| 73 huart1.Init.OverSampling = UART_OVERSAMPLING_16; | |
| 74 | |
| 75 HAL_UART_Init(&huart1); | |
| 76 | |
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77 MX_USART1_DMA_Init(); |
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78 |
| 662 | 79 rxReadIndex = 0; |
| 80 lastCmdIndex = 0; | |
| 81 rxWriteIndex = 0; | |
| 82 dmaActive = 0; | |
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83 Comstatus_O2 = UART_O2_INIT; |
| 662 | 84 } |
| 38 | 85 |
| 662 | 86 void MX_USART1_UART_DeInit(void) |
| 87 { | |
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88 HAL_DMA_Abort(&hdma_usart1_rx); |
| 662 | 89 HAL_DMA_DeInit(&hdma_usart1_rx); |
| 90 HAL_UART_DeInit(&huart1); | |
| 91 } | |
| 92 | |
| 93 void MX_USART1_DMA_Init() | |
| 94 { | |
| 95 /* DMA controller clock enable */ | |
| 96 __DMA2_CLK_ENABLE(); | |
| 97 | |
| 98 /* Peripheral DMA init*/ | |
| 99 hdma_usart1_rx.Instance = DMA2_Stream5; | |
| 100 hdma_usart1_rx.Init.Channel = DMA_CHANNEL_4; | |
| 101 hdma_usart1_rx.Init.Direction = DMA_PERIPH_TO_MEMORY; //DMA_MEMORY_TO_PERIPH; | |
| 102 hdma_usart1_rx.Init.PeriphInc = DMA_PINC_DISABLE; | |
| 103 hdma_usart1_rx.Init.MemInc = DMA_MINC_ENABLE; | |
| 104 hdma_usart1_rx.Init.PeriphDataAlignment = DMA_MDATAALIGN_BYTE; | |
| 105 hdma_usart1_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE; | |
| 106 hdma_usart1_rx.Init.Mode = DMA_NORMAL; | |
| 107 hdma_usart1_rx.Init.Priority = DMA_PRIORITY_LOW; | |
| 108 hdma_usart1_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE; | |
| 109 HAL_DMA_Init(&hdma_usart1_rx); | |
| 110 | |
| 111 __HAL_LINKDMA(&huart1,hdmarx,hdma_usart1_rx); | |
| 112 | |
| 113 /* DMA interrupt init */ | |
| 114 HAL_NVIC_SetPriority(DMA2_Stream5_IRQn, 0, 0); | |
| 115 HAL_NVIC_EnableIRQ(DMA2_Stream5_IRQn); | |
| 38 | 116 } |
| 117 | |
| 690 | 118 void ConvertByteToHexString(uint8_t byte, char* str) |
| 119 { | |
| 120 uint8_t worker = 0; | |
| 121 uint8_t digit = 0; | |
| 122 uint8_t digitCnt = 1; | |
| 38 | 123 |
| 690 | 124 worker = byte; |
| 125 while((worker!=0) && (digitCnt != 255)) | |
| 126 { | |
| 127 digit = worker % 16; | |
| 128 if( digit < 10) | |
| 129 { | |
| 130 digit += '0'; | |
| 131 } | |
| 132 else | |
| 133 { | |
| 134 digit += 'A' - 10; | |
| 135 } | |
| 136 str[digitCnt--]= digit; | |
| 137 worker = worker / 16; | |
| 138 } | |
| 139 } | |
| 662 | 140 |
| 690 | 141 |
| 142 #ifdef ENABLE_CO2_SUPPORT | |
| 143 void HandleUARTCO2Data(void) | |
| 38 | 144 { |
| 662 | 145 uint8_t localRX = rxReadIndex; |
| 146 uint8_t dataType = 0; | |
| 690 | 147 uint32_t dataValue = 0; |
| 662 | 148 static receiveState_t rxState = RX_Ready; |
| 149 static uint32_t lastReceiveTick = 0; | |
| 150 | |
| 151 while(localRX != rxWriteIndex) | |
| 152 { | |
| 153 lastReceiveTick = HAL_GetTick(); | |
| 154 if(rxState == RX_Ready) /* identify data content */ | |
| 155 { | |
| 156 switch(rxBuffer[localRX]) | |
| 157 { | |
| 158 case 'l': | |
| 159 case 'D': | |
| 160 case 'Z': | |
| 161 dataType = rxBuffer[localRX]; | |
| 162 rxState = RX_Data0; | |
| 163 dataValue = 0; | |
| 164 break; | |
| 165 | |
| 166 default: /* unknown or corrupted => ignore */ | |
| 167 break; | |
| 168 } | |
| 169 } | |
| 170 else if((rxState >= RX_Data0) && (rxState <= RX_Data4)) | |
| 171 { | |
| 172 if((rxBuffer[localRX] >= '0') && (rxBuffer[localRX] <= '9')) | |
| 173 { | |
| 174 dataValue = dataValue * 10 + (rxBuffer[localRX] - '0'); | |
| 175 rxState++; | |
| 176 } | |
| 177 } | |
| 178 if((rxBuffer[localRX] == ' ') || (rxBuffer[localRX] == '\n')) /* Abort data detection */ | |
| 179 { | |
| 180 if(rxState == RX_DataComplete) | |
| 181 { | |
| 182 if(externalInterface_GetCO2State() == 0) | |
| 183 { | |
| 184 externalInterface_SetCO2State(EXT_INTERFACE_33V_ON); | |
| 185 } | |
| 186 switch(dataType) | |
| 187 { | |
| 188 case 'D': externalInterface_SetCO2SignalStrength(dataValue); | |
| 189 break; | |
| 190 case 'l': LED_ZeroOffset = dataValue; | |
| 191 break; | |
| 192 case 'Z': externalInterface_SetCO2Value(dataValue); | |
| 193 break; | |
| 194 default: break; | |
| 195 } | |
| 196 } | |
| 197 if(rxState != RX_Data0) /* reset state machine because message in wrong format */ | |
| 198 { | |
| 199 rxState = RX_Ready; | |
| 200 } | |
| 201 } | |
| 202 | |
| 203 localRX++; | |
| 204 rxReadIndex++; | |
| 205 if(rxReadIndex >= CHUNK_SIZE * CHUNKS_PER_BUFFER) | |
| 206 { | |
| 207 localRX = 0; | |
| 208 rxReadIndex = 0; | |
| 209 } | |
| 210 } | |
| 211 | |
| 212 if(time_elapsed_ms(lastReceiveTick,HAL_GetTick()) > 2000) /* check for communication timeout */ | |
| 213 { | |
| 214 externalInterface_SetCO2State(0); | |
| 215 } | |
| 216 | |
| 217 if((dmaActive == 0) && (externalInterface_isEnabledPower33())) /* Should never happen in normal operation => restart in case of communication error */ | |
| 218 { | |
| 219 if(HAL_OK == HAL_UART_Receive_DMA (&huart1, &rxBuffer[rxWriteIndex], CHUNK_SIZE)) | |
| 220 { | |
| 221 dmaActive = 1; | |
| 222 } | |
| 223 } | |
| 38 | 224 } |
| 690 | 225 #endif |
| 226 | |
| 227 #ifdef ENABLE_SENTINEL_MODE | |
| 228 void HandleUARTSentinelData(void) | |
| 229 { | |
| 230 uint8_t localRX = rxReadIndex; | |
| 231 static uint8_t dataType = 0; | |
| 232 static uint32_t dataValue[3]; | |
| 233 static uint8_t dataValueIdx = 0; | |
| 234 static receiveState_t rxState = RX_Ready; | |
| 235 static uint32_t lastReceiveTick = 0; | |
| 236 static uint8_t lastAlive = 0; | |
| 237 static uint8_t curAlive = 0; | |
| 238 static uint8_t checksum = 0; | |
| 239 char checksum_str[]="00"; | |
| 240 | |
| 241 while(localRX != rxWriteIndex) | |
| 242 { | |
| 243 lastReceiveTick = HAL_GetTick(); | |
| 244 | |
| 245 switch(rxState) | |
| 246 { | |
| 247 case RX_Ready: if((rxBuffer[localRX] >= 'a') && (rxBuffer[localRX] <= 'z')) | |
| 248 { | |
| 249 rxState = RX_DetectStart; | |
| 250 curAlive = rxBuffer[localRX]; | |
| 251 checksum = 0; | |
| 252 } | |
| 253 break; | |
| 254 | |
| 255 case RX_DetectStart: checksum += rxBuffer[localRX]; | |
| 256 if(rxBuffer[localRX] == '1') | |
| 257 { | |
| 258 rxState = RX_SelectData; | |
| 259 dataType = 0xFF; | |
| 260 | |
| 261 } | |
| 262 else | |
| 263 { | |
| 264 rxState = RX_Ready; | |
| 265 } | |
| 266 break; | |
| 267 | |
| 268 case RX_SelectData: checksum += rxBuffer[localRX]; | |
| 269 switch(rxBuffer[localRX]) | |
| 270 { | |
| 271 case 'T': dataType = rxBuffer[localRX]; | |
| 272 break; | |
| 273 case '0': if(dataType != 0xff) | |
| 274 { | |
| 275 rxState = RX_Data0; | |
| 276 dataValueIdx = 0; | |
| 277 dataValue[0] = 0; | |
| 278 | |
| 279 } | |
| 280 else | |
| 281 { | |
| 282 rxState = RX_Ready; | |
| 283 } | |
| 284 break; | |
| 285 default: rxState = RX_Ready; | |
| 286 } | |
| 287 break; | |
| 288 | |
| 289 case RX_Data0: | |
| 290 case RX_Data1: | |
| 291 case RX_Data2: | |
| 292 case RX_Data4: | |
| 293 case RX_Data5: | |
| 294 case RX_Data6: | |
| 295 case RX_Data8: | |
| 296 case RX_Data9: | |
| 297 case RX_Data10: checksum += rxBuffer[localRX]; | |
| 298 if((rxBuffer[localRX] >= '0') && (rxBuffer[localRX] <= '9')) | |
| 299 { | |
| 300 dataValue[dataValueIdx] = dataValue[dataValueIdx] * 10 + (rxBuffer[localRX] - '0'); | |
| 301 rxState++; | |
| 302 } | |
| 303 else | |
| 304 { | |
| 305 rxState = RX_Ready; | |
| 306 } | |
| 307 break; | |
| 308 | |
| 309 case RX_Data3: | |
| 310 case RX_Data7: checksum += rxBuffer[localRX]; | |
| 311 if(rxBuffer[localRX] == '0') | |
| 312 { | |
| 313 rxState++; | |
| 314 dataValueIdx++; | |
| 315 dataValue[dataValueIdx] = 0; | |
| 316 } | |
| 317 else | |
| 318 { | |
| 319 rxState = RX_Ready; | |
| 320 } | |
| 321 break; | |
| 322 case RX_Data11: rxState = RX_DataComplete; | |
| 323 ConvertByteToHexString(checksum,checksum_str); | |
| 324 if(rxBuffer[localRX] == checksum_str[0]) | |
| 325 { | |
| 326 rxState = RX_DataComplete; | |
| 327 } | |
| 328 else | |
| 329 { | |
| 330 rxState = RX_Ready; | |
| 331 } | |
| 332 | |
| 333 break; | |
| 334 | |
| 335 case RX_DataComplete: if(rxBuffer[localRX] == checksum_str[1]) | |
| 336 { | |
| 337 setExternalInterfaceChannel(0,(float)(dataValue[0] / 10.0)); | |
| 338 setExternalInterfaceChannel(1,(float)(dataValue[1] / 10.0)); | |
| 339 setExternalInterfaceChannel(2,(float)(dataValue[2] / 10.0)); | |
| 340 } | |
| 341 rxState = RX_Ready; | |
| 342 break; | |
| 343 | |
| 344 | |
| 345 default: rxState = RX_Ready; | |
| 346 break; | |
| 347 | |
| 348 } | |
| 349 | |
| 350 localRX++; | |
| 351 rxReadIndex++; | |
| 352 if(rxReadIndex >= CHUNK_SIZE * CHUNKS_PER_BUFFER) | |
| 353 { | |
| 354 localRX = 0; | |
| 355 rxReadIndex = 0; | |
| 356 } | |
| 357 } | |
| 358 | |
| 359 if(time_elapsed_ms(lastReceiveTick,HAL_GetTick()) > 4000) /* check for communication timeout */ | |
| 360 { | |
| 361 if(curAlive == lastAlive) | |
| 362 { | |
| 363 setExternalInterfaceChannel(0,0.0); | |
| 364 setExternalInterfaceChannel(1,0.0); | |
| 365 setExternalInterfaceChannel(2,0.0); | |
| 366 } | |
| 367 lastAlive = curAlive; | |
| 368 } | |
| 369 | |
| 370 if((dmaActive == 0) && (externalInterface_isEnabledPower33())) /* Should never happen in normal operation => restart in case of communication error */ | |
| 371 { | |
| 372 if(HAL_OK == HAL_UART_Receive_DMA (&huart1, &rxBuffer[rxWriteIndex], CHUNK_SIZE)) | |
| 373 { | |
| 374 dmaActive = 1; | |
| 375 } | |
| 376 } | |
| 377 } | |
| 378 #endif | |
| 38 | 379 |
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380 void DigitalO2_SetupCmd(uint8_t O2State, uint8_t *cmdString, uint8_t *cmdLength) |
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381 { |
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382 switch (O2State) |
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383 { |
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384 case UART_O2_CHECK: *cmdLength = snprintf((char*)cmdString, 10, "#LOGO"); |
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385 break; |
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386 case UART_O2_REQ_INFO: *cmdLength = snprintf((char*)cmdString, 10, "#VERS"); |
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387 break; |
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388 case UART_O2_REQ_ID: *cmdLength = snprintf((char*)cmdString, 10, "#IDNR"); |
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389 break; |
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390 case UART_O2_REQ_O2: *cmdLength = snprintf((char*)cmdString, 10, "#DOXY"); |
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391 break; |
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392 |
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393 default: *cmdLength = 0; |
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394 break; |
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395 } |
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396 if(*cmdLength != 0) |
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397 { |
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398 cmdString[*cmdLength] = 0x0D; |
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399 *cmdLength = *cmdLength + 1; |
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400 } |
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401 } |
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402 |
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403 void StringToInt(char *pstr, uint32_t *pInt) |
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404 { |
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405 uint8_t index = 0; |
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406 uint32_t result = 0; |
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407 while((pstr[index] >= '0') && (pstr[index] <= '9')) |
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408 { |
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409 result *=10; |
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410 result += pstr[index] - '0'; |
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411 index++; |
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412 } |
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413 *pInt = result; |
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414 } |
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415 |
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416 void HandleUARTDigitalO2(void) |
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417 { |
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418 static uint32_t lastO2ReqTick = 0; |
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419 |
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420 static uartO2RxState_t rxState = O2RX_IDLE; |
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421 static uint32_t lastReceiveTick = 0; |
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422 static uint8_t lastAlive = 0; |
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423 static uint8_t curAlive = 0; |
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424 |
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425 static uint8_t cmdLength = 0; |
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426 static uint8_t cmdString[10]; |
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427 static uint8_t cmdReadIndex = 0; |
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428 |
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429 uint32_t tmpO2 = 0; |
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430 uint32_t tmpData = 0; |
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431 uint8_t localRX = rxReadIndex; |
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432 uint32_t tick = HAL_GetTick(); |
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433 |
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434 |
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435 if(Comstatus_O2 == UART_O2_INIT) |
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436 { |
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437 memset((char*)&rxBuffer[rxWriteIndex],(int)0,CHUNK_SIZE); |
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438 lastAlive = 0; |
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439 curAlive = 0; |
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440 |
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441 Comstatus_O2 = UART_O2_CHECK; |
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442 DigitalO2_SetupCmd(Comstatus_O2,cmdString,&cmdLength); |
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443 HAL_UART_Transmit(&huart1,cmdString,cmdLength,10); |
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444 |
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445 rxState = O2RX_CONFIRM; |
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446 cmdReadIndex = 0; |
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447 lastO2ReqTick = tick; |
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448 |
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449 if(HAL_OK == HAL_UART_Receive_DMA (&huart1, &rxBuffer[rxWriteIndex], CHUNK_SIZE)) |
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450 { |
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451 dmaActive = 1; |
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452 } |
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453 } |
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454 if(time_elapsed_ms(lastO2ReqTick,tick) > 1000) /* repeat request once per second */ |
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455 { |
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456 lastO2ReqTick = tick; |
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457 if(Comstatus_O2 == UART_O2_IDLE) /* cyclic request of o2 value */ |
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458 { |
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459 Comstatus_O2 = UART_O2_REQ_O2; |
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460 rxState = O2RX_CONFIRM; |
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461 } |
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462 DigitalO2_SetupCmd(Comstatus_O2,cmdString,&cmdLength); |
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463 |
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464 HAL_UART_Transmit(&huart1,cmdString,cmdLength,10); |
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465 } |
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466 |
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467 while((rxBuffer[localRX]!=0)) |
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468 { |
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469 |
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470 lastReceiveTick = tick; |
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471 switch(rxState) |
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472 { |
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473 case O2RX_CONFIRM: if(rxBuffer[localRX] == '#') |
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474 { |
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475 cmdReadIndex = 0; |
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476 } |
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477 if(rxBuffer[localRX] == cmdString[cmdReadIndex]) |
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478 { |
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479 cmdReadIndex++; |
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480 if(cmdReadIndex == cmdLength - 1) |
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481 { |
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482 tmpRxIdx = 0; |
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483 memset((char*) tmpRxBuf, 0, sizeof(tmpRxBuf)); |
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484 switch (Comstatus_O2) |
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485 { |
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486 case UART_O2_CHECK: Comstatus_O2 = UART_O2_REQ_INFO; |
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487 DigitalO2_SetupCmd(Comstatus_O2,cmdString,&cmdLength); |
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488 HAL_UART_Transmit(&huart1,cmdString,cmdLength,10); |
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489 break; |
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490 case UART_O2_REQ_ID: rxState = O2RX_GETNR; |
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491 break; |
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492 case UART_O2_REQ_INFO: rxState = O2RX_GETTYPE; |
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493 break; |
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494 case UART_O2_REQ_O2: rxState = O2RX_GETO2; |
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495 break; |
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496 default: Comstatus_O2 = UART_O2_IDLE; |
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497 rxState = O2RX_IDLE; |
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498 break; |
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499 } |
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500 } |
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501 } |
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502 break; |
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503 |
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504 case O2RX_GETSTATUS: |
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505 case O2RX_GETTEMP: |
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506 case O2RX_GETTYPE: |
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507 case O2RX_GETVERSION: |
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508 case O2RX_GETCHANNEL: |
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509 case O2RX_GETSUBSENSORS: |
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510 case O2RX_GETO2: |
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511 case O2RX_GETNR: if(rxBuffer[localRX] != 0x0D) |
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512 { |
|
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513 if(rxBuffer[localRX] != ' ') |
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514 { |
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515 tmpRxBuf[tmpRxIdx++] = rxBuffer[localRX]; |
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516 } |
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517 else |
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518 { |
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519 if(tmpRxIdx != 0) |
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520 { |
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521 switch(rxState) |
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522 { |
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523 case O2RX_GETCHANNEL: StringToInt(tmpRxBuf,&tmpData); |
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524 rxState = O2RX_GETVERSION; |
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525 break; |
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526 case O2RX_GETVERSION: StringToInt(tmpRxBuf,&tmpData); |
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527 rxState = O2RX_GETSUBSENSORS; |
|
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528 break; |
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529 case O2RX_GETTYPE: StringToInt(tmpRxBuf,&tmpData); |
|
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530 rxState = O2RX_GETCHANNEL; |
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|
531 break; |
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|
532 |
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533 case O2RX_GETO2: StringToInt(tmpRxBuf,&tmpO2); |
|
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534 setExternalInterfaceChannel(0,(float)(tmpO2 / 10000.0)); |
|
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535 rxState = O2RX_GETTEMP; |
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536 break; |
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537 case O2RX_GETTEMP: rxState = O2RX_GETSTATUS; |
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538 break; |
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539 default: |
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540 break; |
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541 } |
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542 memset((char*) tmpRxBuf, 0, tmpRxIdx); |
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543 tmpRxIdx = 0; |
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544 } |
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545 } |
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546 } |
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547 else |
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548 { |
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549 switch (rxState) |
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550 { |
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551 case O2RX_GETSTATUS: StringToInt(tmpRxBuf,&tmpData); |
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552 Comstatus_O2 = UART_O2_IDLE; |
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553 rxState = O2RX_IDLE; |
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554 break; |
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555 case O2RX_GETSUBSENSORS: StringToInt(tmpRxBuf,&tmpData); |
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556 Comstatus_O2 = UART_O2_IDLE; |
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557 rxState = O2RX_IDLE; |
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558 break; |
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559 case O2RX_GETNR: StringToInt((char*)rxBuffer,&DigitalO2ID); |
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560 /* no break */ |
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561 default: Comstatus_O2 = UART_O2_IDLE; |
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562 rxState = O2RX_IDLE; |
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563 break; |
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564 } |
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565 } |
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566 break; |
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567 default: rxState = O2RX_IDLE; |
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568 break; |
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569 |
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570 } |
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571 |
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572 localRX++; |
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573 rxReadIndex++; |
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574 if(rxReadIndex >= CHUNK_SIZE * CHUNKS_PER_BUFFER) |
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575 { |
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576 localRX = 0; |
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577 rxReadIndex = 0; |
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578 } |
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579 } |
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580 |
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581 if(time_elapsed_ms(lastReceiveTick,HAL_GetTick()) > 4000) /* check for communication timeout */ |
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582 { |
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583 if(curAlive == lastAlive) |
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584 { |
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585 setExternalInterfaceChannel(0,0.0); |
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586 setExternalInterfaceChannel(1,0.0); |
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587 setExternalInterfaceChannel(2,0.0); |
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588 } |
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589 lastAlive = curAlive; |
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590 } |
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591 |
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592 if((dmaActive == 0) && (externalInterface_isEnabledPower33())) /* Should never happen in normal operation => restart in case of communication error */ |
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593 { |
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594 if(HAL_OK == HAL_UART_Receive_DMA (&huart1, &rxBuffer[rxWriteIndex], CHUNK_SIZE)) |
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595 { |
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596 dmaActive = 1; |
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597 } |
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598 } |
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599 } |
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600 |
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601 |
| 662 | 602 void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) |
| 38 | 603 { |
| 662 | 604 if(huart == &huart1) |
| 605 { | |
| 606 dmaActive = 0; | |
| 607 rxWriteIndex+=CHUNK_SIZE; | |
| 608 if(rxWriteIndex >= CHUNK_SIZE * CHUNKS_PER_BUFFER) | |
| 609 { | |
| 610 rxWriteIndex = 0; | |
| 611 } | |
| 612 if((rxWriteIndex / CHUNK_SIZE) != (rxReadIndex / CHUNK_SIZE)) /* start next transfer if we did not catch up with read index */ | |
| 613 { | |
| 614 if(externalInterface_isEnabledPower33()) | |
| 615 { | |
|
704
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616 memset((char*)&rxBuffer[rxWriteIndex],(int)0,CHUNK_SIZE); |
| 662 | 617 if(HAL_OK == HAL_UART_Receive_DMA (&huart1, &rxBuffer[rxWriteIndex], CHUNK_SIZE)) |
| 618 { | |
| 619 dmaActive = 1; | |
| 620 } | |
| 621 } | |
| 622 } | |
| 623 } | |
| 38 | 624 } |
| 625 | |
| 626 | |
| 662 | 627 |
| 628 | |
| 629 | |
| 630 | |
| 631 | |
| 632 | |
| 38 | 633 /************************ (C) COPYRIGHT heinrichs weikamp *****END OF FILE****/ |