Mercurial > public > ostc4
annotate Small_CPU/Src/uart.c @ 805:dd7ce655db26
Adds a simple countdown timer, available as a custom view in surface and dive mode.
This can be used to time safety stops, or to prebreathe a CCR (or to boil your breakfast eggs if you are so inclined). The duration of the timer is configurable from 1 second to 9:59 minutes in the System menu.
The timer is started by switching to the custom view, and remaining on it until a 10 second delay has elapsed. Once the timer has started the custom view can be changed and the timer will continue running in the background.
After the timer has run out 'Finished' will be shown for 10 seconds in the timer custom view, and then automatic switching of custom views (if configured) resumes.
In surface mode the dive computer will not go to sleep while the timer is running, and a mini timer will be shown when the timer custom view is not showing. (mikeller)
| author | heinrichsweikamp |
|---|---|
| date | Mon, 21 Aug 2023 17:20:07 +0200 |
| parents | 96ffad0a4e57 |
| children | 9602a7338f28 |
| 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" | |
| 794 | 23 #include "uartProtocol_O2.h" |
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24 #include "uartProtocol_Co2.h" |
| 662 | 25 #include "externalInterface.h" |
| 26 #include "data_exchange.h" | |
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27 #include <string.h> /* memset */ |
| 38 | 28 |
| 29 /* Private variables ---------------------------------------------------------*/ | |
| 30 | |
| 794 | 31 |
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32 |
| 781 | 33 #define CHUNK_SIZE (25u) /* the DMA will handle chunk size transfers */ |
| 34 #define CHUNKS_PER_BUFFER (5u) | |
| 794 | 35 |
| 662 | 36 UART_HandleTypeDef huart1; |
| 37 | |
| 38 DMA_HandleTypeDef hdma_usart1_rx; | |
| 38 | 39 |
| 662 | 40 uint8_t rxBuffer[CHUNK_SIZE * CHUNKS_PER_BUFFER]; /* The complete buffer has a X * chunk size to allow fariations in buffer read time */ |
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41 static uint8_t rxWriteIndex; /* Index of the data item which is analysed */ |
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42 static uint8_t rxReadIndex; /* Index at which new data is stared */ |
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43 static uint8_t lastCmdIndex; /* Index of last command which has not been completly received */ |
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44 static uint8_t dmaActive; /* Indicator if DMA reception needs to be started */ |
| 794 | 45 |
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46 |
| 742 | 47 static uint8_t SentinelConnected = 0; /* Binary indicator if a sensor is connected or not */ |
| 38 | 48 |
| 794 | 49 |
| 38 | 50 /* Exported functions --------------------------------------------------------*/ |
| 51 | |
| 794 | 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 huart1.Init.BaudRate = 19200; |
| 662 | 59 huart1.Init.WordLength = UART_WORDLENGTH_8B; |
| 60 huart1.Init.StopBits = UART_STOPBITS_1; | |
| 61 huart1.Init.Parity = UART_PARITY_NONE; | |
| 62 huart1.Init.Mode = UART_MODE_TX_RX; | |
| 63 huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE; | |
| 64 huart1.Init.OverSampling = UART_OVERSAMPLING_16; | |
| 65 | |
| 66 HAL_UART_Init(&huart1); | |
| 67 | |
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68 MX_USART1_DMA_Init(); |
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69 |
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70 memset(rxBuffer,BUFFER_NODATA,sizeof(rxBuffer)); |
| 662 | 71 rxReadIndex = 0; |
| 72 lastCmdIndex = 0; | |
| 73 rxWriteIndex = 0; | |
| 74 dmaActive = 0; | |
| 794 | 75 |
| 742 | 76 SentinelConnected = 0; |
| 794 | 77 |
| 662 | 78 } |
| 38 | 79 |
| 662 | 80 void MX_USART1_UART_DeInit(void) |
| 81 { | |
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82 HAL_DMA_Abort(&hdma_usart1_rx); |
| 662 | 83 HAL_DMA_DeInit(&hdma_usart1_rx); |
| 84 HAL_UART_DeInit(&huart1); | |
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85 dmaActive = 0; |
| 662 | 86 } |
| 87 | |
| 88 void MX_USART1_DMA_Init() | |
| 89 { | |
| 90 /* DMA controller clock enable */ | |
| 91 __DMA2_CLK_ENABLE(); | |
| 92 | |
| 93 /* Peripheral DMA init*/ | |
| 94 hdma_usart1_rx.Instance = DMA2_Stream5; | |
| 95 hdma_usart1_rx.Init.Channel = DMA_CHANNEL_4; | |
| 96 hdma_usart1_rx.Init.Direction = DMA_PERIPH_TO_MEMORY; //DMA_MEMORY_TO_PERIPH; | |
| 97 hdma_usart1_rx.Init.PeriphInc = DMA_PINC_DISABLE; | |
| 98 hdma_usart1_rx.Init.MemInc = DMA_MINC_ENABLE; | |
| 99 hdma_usart1_rx.Init.PeriphDataAlignment = DMA_MDATAALIGN_BYTE; | |
| 100 hdma_usart1_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE; | |
| 101 hdma_usart1_rx.Init.Mode = DMA_NORMAL; | |
| 102 hdma_usart1_rx.Init.Priority = DMA_PRIORITY_LOW; | |
| 103 hdma_usart1_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE; | |
| 104 HAL_DMA_Init(&hdma_usart1_rx); | |
| 105 | |
| 106 __HAL_LINKDMA(&huart1,hdmarx,hdma_usart1_rx); | |
| 107 | |
| 108 /* DMA interrupt init */ | |
| 109 HAL_NVIC_SetPriority(DMA2_Stream5_IRQn, 0, 0); | |
| 110 HAL_NVIC_EnableIRQ(DMA2_Stream5_IRQn); | |
| 38 | 111 } |
| 112 | |
| 794 | 113 void UART_MUX_SelectAddress(uint8_t muxAddress) |
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114 { |
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115 uint8_t indexstr[4]; |
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116 |
| 794 | 117 if(muxAddress <= MAX_MUX_CHANNEL) |
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118 { |
| 794 | 119 indexstr[0] = '~'; |
| 120 indexstr[1] = muxAddress; | |
| 121 indexstr[2] = 0x0D; | |
| 122 indexstr[3] = 0x0A; | |
| 123 | |
| 124 HAL_UART_Transmit(&huart1,indexstr,4,10); | |
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125 } |
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126 } |
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127 |
| 794 | 128 |
| 129 void UART_SendCmdString(uint8_t *cmdString) | |
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130 { |
| 794 | 131 uint8_t cmdLength = strlen((char*)cmdString); |
| 132 | |
| 133 if(cmdLength < 20) /* A longer string is an indication for a missing 0 termination */ | |
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134 { |
| 794 | 135 if(dmaActive == 0) |
| 136 { | |
| 137 UART_StartDMA_Receiption(); | |
| 138 } | |
| 139 HAL_UART_Transmit(&huart1,cmdString,cmdLength,10); | |
| 140 } | |
| 141 } | |
| 142 | |
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143 |
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144 void StringToInt(char *pstr, uint32_t *puInt32) |
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145 { |
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146 uint8_t index = 0; |
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147 uint32_t result = 0; |
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148 while((pstr[index] >= '0') && (pstr[index] <= '9')) |
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149 { |
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150 result *=10; |
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151 result += pstr[index] - '0'; |
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152 index++; |
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153 } |
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154 *puInt32 = result; |
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155 } |
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156 |
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157 void StringToUInt64(char *pstr, uint64_t *puint64) |
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158 { |
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159 uint8_t index = 0; |
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160 uint64_t result = 0; |
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161 while((pstr[index] >= '0') && (pstr[index] <= '9')) |
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162 { |
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163 result *=10; |
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164 result += pstr[index] - '0'; |
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165 index++; |
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166 } |
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167 *puint64 = result; |
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168 } |
| 690 | 169 void ConvertByteToHexString(uint8_t byte, char* str) |
| 170 { | |
| 171 uint8_t worker = 0; | |
| 172 uint8_t digit = 0; | |
| 173 uint8_t digitCnt = 1; | |
| 38 | 174 |
| 690 | 175 worker = byte; |
| 176 while((worker!=0) && (digitCnt != 255)) | |
| 177 { | |
| 178 digit = worker % 16; | |
| 179 if( digit < 10) | |
| 180 { | |
| 181 digit += '0'; | |
| 182 } | |
| 183 else | |
| 184 { | |
| 185 digit += 'A' - 10; | |
| 186 } | |
| 187 str[digitCnt--]= digit; | |
| 188 worker = worker / 16; | |
| 189 } | |
| 190 } | |
| 662 | 191 |
| 742 | 192 void UART_StartDMA_Receiption() |
| 193 { | |
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194 if(dmaActive == 0) |
| 742 | 195 { |
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196 if(HAL_OK == HAL_UART_Receive_DMA (&huart1, &rxBuffer[rxWriteIndex], CHUNK_SIZE)) |
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197 { |
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198 dmaActive = 1; |
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199 } |
| 742 | 200 } |
| 201 } | |
| 690 | 202 |
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203 void UART_ChangeBaudrate(uint32_t newBaudrate) |
| 38 | 204 { |
| 725 | 205 |
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206 // HAL_DMA_Abort(&hdma_usart1_rx); |
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207 MX_USART1_UART_DeInit(); |
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208 //HAL_UART_Abort(&huart1); |
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209 //HAL_DMA_DeInit(&hdma_usart1_rx); |
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210 |
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211 |
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212 // huart1.Instance->BRR = UART_BRR_SAMPLING8(HAL_RCC_GetPCLK2Freq()/2, newBaudrate); |
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213 huart1.Init.BaudRate = newBaudrate; |
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214 HAL_UART_Init(&huart1); |
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215 MX_USART1_DMA_Init(); |
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216 if(dmaActive) |
| 794 | 217 { |
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218 rxReadIndex = 0; |
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219 rxWriteIndex = 0; |
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220 dmaActive = 0; |
| 742 | 221 UART_StartDMA_Receiption(); |
| 662 | 222 } |
| 38 | 223 } |
| 690 | 224 |
| 225 #ifdef ENABLE_SENTINEL_MODE | |
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226 void UART_HandleSentinelData(void) |
| 690 | 227 { |
| 228 uint8_t localRX = rxReadIndex; | |
| 229 static uint8_t dataType = 0; | |
| 230 static uint32_t dataValue[3]; | |
| 231 static uint8_t dataValueIdx = 0; | |
| 232 static receiveState_t rxState = RX_Ready; | |
| 233 static uint32_t lastReceiveTick = 0; | |
| 234 static uint8_t lastAlive = 0; | |
| 235 static uint8_t curAlive = 0; | |
| 236 static uint8_t checksum = 0; | |
| 742 | 237 static char checksum_str[]="00"; |
| 690 | 238 |
| 742 | 239 while((rxBuffer[localRX]!=0)) |
| 690 | 240 { |
| 241 lastReceiveTick = HAL_GetTick(); | |
| 242 | |
| 243 switch(rxState) | |
| 244 { | |
| 245 case RX_Ready: if((rxBuffer[localRX] >= 'a') && (rxBuffer[localRX] <= 'z')) | |
| 246 { | |
| 247 rxState = RX_DetectStart; | |
| 248 curAlive = rxBuffer[localRX]; | |
| 249 checksum = 0; | |
| 250 } | |
| 251 break; | |
| 252 | |
| 253 case RX_DetectStart: checksum += rxBuffer[localRX]; | |
| 254 if(rxBuffer[localRX] == '1') | |
| 255 { | |
| 256 rxState = RX_SelectData; | |
| 257 dataType = 0xFF; | |
| 258 | |
| 259 } | |
| 260 else | |
| 261 { | |
| 262 rxState = RX_Ready; | |
| 263 } | |
| 264 break; | |
| 265 | |
| 266 case RX_SelectData: checksum += rxBuffer[localRX]; | |
| 267 switch(rxBuffer[localRX]) | |
| 268 { | |
| 269 case 'T': dataType = rxBuffer[localRX]; | |
| 270 break; | |
| 271 case '0': if(dataType != 0xff) | |
| 272 { | |
| 273 rxState = RX_Data0; | |
| 274 dataValueIdx = 0; | |
| 275 dataValue[0] = 0; | |
| 276 | |
| 277 } | |
| 278 else | |
| 279 { | |
| 280 rxState = RX_Ready; | |
| 281 } | |
| 282 break; | |
| 283 default: rxState = RX_Ready; | |
| 284 } | |
| 285 break; | |
| 286 | |
| 287 case RX_Data0: | |
| 288 case RX_Data1: | |
| 289 case RX_Data2: | |
| 290 case RX_Data4: | |
| 291 case RX_Data5: | |
| 292 case RX_Data6: | |
| 293 case RX_Data8: | |
| 294 case RX_Data9: | |
| 295 case RX_Data10: checksum += rxBuffer[localRX]; | |
| 296 if((rxBuffer[localRX] >= '0') && (rxBuffer[localRX] <= '9')) | |
| 297 { | |
| 298 dataValue[dataValueIdx] = dataValue[dataValueIdx] * 10 + (rxBuffer[localRX] - '0'); | |
| 299 rxState++; | |
| 300 } | |
| 301 else | |
| 302 { | |
| 303 rxState = RX_Ready; | |
| 304 } | |
| 305 break; | |
| 306 | |
| 307 case RX_Data3: | |
| 308 case RX_Data7: checksum += rxBuffer[localRX]; | |
| 309 if(rxBuffer[localRX] == '0') | |
| 310 { | |
| 311 rxState++; | |
| 312 dataValueIdx++; | |
| 313 dataValue[dataValueIdx] = 0; | |
| 314 } | |
| 315 else | |
| 316 { | |
| 317 rxState = RX_Ready; | |
| 318 } | |
| 319 break; | |
| 320 case RX_Data11: rxState = RX_DataComplete; | |
| 321 ConvertByteToHexString(checksum,checksum_str); | |
| 322 if(rxBuffer[localRX] == checksum_str[0]) | |
| 323 { | |
| 324 rxState = RX_DataComplete; | |
| 325 } | |
| 326 else | |
| 327 { | |
| 328 rxState = RX_Ready; | |
| 329 } | |
| 330 | |
| 331 break; | |
| 332 | |
| 333 case RX_DataComplete: if(rxBuffer[localRX] == checksum_str[1]) | |
| 334 { | |
| 335 setExternalInterfaceChannel(0,(float)(dataValue[0] / 10.0)); | |
| 336 setExternalInterfaceChannel(1,(float)(dataValue[1] / 10.0)); | |
| 337 setExternalInterfaceChannel(2,(float)(dataValue[2] / 10.0)); | |
| 742 | 338 SentinelConnected = 1; |
| 690 | 339 } |
| 340 rxState = RX_Ready; | |
| 341 break; | |
| 342 | |
| 343 | |
| 344 default: rxState = RX_Ready; | |
| 345 break; | |
| 346 | |
| 347 } | |
| 348 localRX++; | |
| 349 rxReadIndex++; | |
| 350 if(rxReadIndex >= CHUNK_SIZE * CHUNKS_PER_BUFFER) | |
| 351 { | |
| 352 localRX = 0; | |
| 353 rxReadIndex = 0; | |
| 354 } | |
| 355 } | |
| 356 | |
| 357 if(time_elapsed_ms(lastReceiveTick,HAL_GetTick()) > 4000) /* check for communication timeout */ | |
| 358 { | |
| 359 if(curAlive == lastAlive) | |
| 360 { | |
| 361 setExternalInterfaceChannel(0,0.0); | |
| 362 setExternalInterfaceChannel(1,0.0); | |
| 363 setExternalInterfaceChannel(2,0.0); | |
| 742 | 364 SentinelConnected = 0; |
| 690 | 365 } |
| 366 lastAlive = curAlive; | |
| 367 } | |
| 368 | |
| 369 if((dmaActive == 0) && (externalInterface_isEnabledPower33())) /* Should never happen in normal operation => restart in case of communication error */ | |
| 370 { | |
| 742 | 371 UART_StartDMA_Receiption(); |
| 690 | 372 } |
| 373 } | |
| 374 #endif | |
| 38 | 375 |
|
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725
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changeset
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376 |
|
798
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377 |
| 742 | 378 uint8_t UART_isSentinelConnected() |
| 379 { | |
| 380 return SentinelConnected; | |
| 381 } | |
|
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382 |
| 662 | 383 void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) |
| 38 | 384 { |
| 662 | 385 if(huart == &huart1) |
| 386 { | |
| 387 dmaActive = 0; | |
| 388 rxWriteIndex+=CHUNK_SIZE; | |
| 389 if(rxWriteIndex >= CHUNK_SIZE * CHUNKS_PER_BUFFER) | |
| 390 { | |
| 391 rxWriteIndex = 0; | |
| 392 } | |
|
787
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Dev Bugfx Empty buffer indication and stability improvments:
Ideenmodellierer
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diff
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|
393 if((rxWriteIndex / CHUNK_SIZE) != (rxReadIndex / CHUNK_SIZE) || (rxWriteIndex == rxReadIndex)) /* start next transfer if we did not catch up with read index */ |
| 662 | 394 { |
|
787
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Dev Bugfx Empty buffer indication and stability improvments:
Ideenmodellierer
parents:
785
diff
changeset
|
395 if(externalInterface_GetUARTProtocol() != 0) |
| 662 | 396 { |
| 742 | 397 UART_StartDMA_Receiption(); |
| 662 | 398 } |
| 399 } | |
| 400 } | |
| 38 | 401 } |
| 402 | |
| 794 | 403 void UART_ReadData(uint8_t sensorType) |
| 404 { | |
| 405 uint8_t localRX = rxReadIndex; | |
| 38 | 406 |
| 794 | 407 while((rxBuffer[localRX]!=BUFFER_NODATA)) |
| 408 { | |
| 409 switch (sensorType) | |
| 410 { | |
| 411 case SENSOR_MUX: | |
| 412 case SENSOR_DIGO2: uartO2_ProcessData(rxBuffer[localRX]); | |
| 413 break; | |
|
798
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Migrated CO2 protocol implementation to new format:
Ideenmodellierer
parents:
794
diff
changeset
|
414 #ifdef ENABLE_CO2_SUPPORT |
|
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415 case SENSOR_CO2: uartCo2_ProcessData(rxBuffer[localRX]); |
| 794 | 416 break; |
|
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Migrated CO2 protocol implementation to new format:
Ideenmodellierer
parents:
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diff
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|
417 #endif |
| 794 | 418 default: |
| 419 break; | |
| 420 } | |
| 421 | |
| 422 rxBuffer[localRX] = BUFFER_NODATA; | |
| 423 localRX++; | |
| 424 rxReadIndex++; | |
| 425 if(rxReadIndex >= CHUNK_SIZE * CHUNKS_PER_BUFFER) | |
| 426 { | |
| 427 localRX = 0; | |
| 428 rxReadIndex = 0; | |
| 429 } | |
| 430 } | |
| 431 } | |
| 432 | |
| 433 void UART_FlushRxBuffer(void) | |
| 434 { | |
| 435 while(rxBuffer[rxReadIndex] != BUFFER_NODATA) | |
| 436 { | |
| 437 rxBuffer[rxReadIndex] = BUFFER_NODATA; | |
| 438 rxReadIndex++; | |
| 439 if(rxReadIndex >= CHUNK_SIZE * CHUNKS_PER_BUFFER) | |
| 440 { | |
| 441 rxReadIndex = 0; | |
| 442 } | |
| 443 } | |
| 444 | |
| 445 } | |
| 662 | 446 |
| 38 | 447 /************************ (C) COPYRIGHT heinrichs weikamp *****END OF FILE****/ |