Mercurial > public > ostc4
annotate Small_CPU/Src/uart.c @ 867:3311b720a072 Evo_2_23
Decrease calculation interval for ascend speed:
In the previous version the ascend speed was calculated every 2 seconds. To improve the visualization the interval has been reduced to 400ms. The average function of the depth calculation ensures a smooth dynamic transition of the values. For testing a simulation profile, which changes between several speeds, may be acivated using the compile switch.
| author | Ideenmodellierer |
|---|---|
| date | Mon, 12 Aug 2024 14:30:22 +0200 |
| parents | ad96f99ebc78 |
| children | cf3967fe6924 |
| 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" |
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25 #include "uartProtocol_Sentinel.h" |
| 662 | 26 #include "externalInterface.h" |
| 27 #include "data_exchange.h" | |
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28 #include <string.h> /* memset */ |
| 38 | 29 |
| 30 /* Private variables ---------------------------------------------------------*/ | |
| 31 | |
| 794 | 32 |
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33 |
| 781 | 34 #define CHUNK_SIZE (25u) /* the DMA will handle chunk size transfers */ |
| 35 #define CHUNKS_PER_BUFFER (5u) | |
| 794 | 36 |
| 662 | 37 UART_HandleTypeDef huart1; |
| 38 | |
| 39 DMA_HandleTypeDef hdma_usart1_rx; | |
| 38 | 40 |
| 662 | 41 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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42 static uint8_t rxWriteIndex; /* Index of the data item which is analysed */ |
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43 static uint8_t rxReadIndex; /* Index at which new data is stared */ |
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44 static uint8_t lastCmdIndex; /* Index of last command which has not been completly received */ |
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45 static uint8_t dmaActive; /* Indicator if DMA reception needs to be started */ |
| 794 | 46 |
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47 |
| 38 | 48 /* Exported functions --------------------------------------------------------*/ |
| 49 | |
| 794 | 50 |
| 662 | 51 void MX_USART1_UART_Init(void) |
| 38 | 52 { |
| 662 | 53 /* regular init */ |
| 54 | |
| 55 huart1.Instance = USART1; | |
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56 huart1.Init.BaudRate = 19200; |
| 662 | 57 huart1.Init.WordLength = UART_WORDLENGTH_8B; |
| 58 huart1.Init.StopBits = UART_STOPBITS_1; | |
| 59 huart1.Init.Parity = UART_PARITY_NONE; | |
| 60 huart1.Init.Mode = UART_MODE_TX_RX; | |
| 61 huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE; | |
| 62 huart1.Init.OverSampling = UART_OVERSAMPLING_16; | |
| 63 | |
| 64 HAL_UART_Init(&huart1); | |
| 65 | |
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66 MX_USART1_DMA_Init(); |
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67 |
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68 memset(rxBuffer,BUFFER_NODATA,sizeof(rxBuffer)); |
| 662 | 69 rxReadIndex = 0; |
| 70 lastCmdIndex = 0; | |
| 71 rxWriteIndex = 0; | |
| 72 dmaActive = 0; | |
| 73 } | |
| 38 | 74 |
| 662 | 75 void MX_USART1_UART_DeInit(void) |
| 76 { | |
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77 HAL_DMA_Abort(&hdma_usart1_rx); |
| 662 | 78 HAL_DMA_DeInit(&hdma_usart1_rx); |
| 79 HAL_UART_DeInit(&huart1); | |
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80 dmaActive = 0; |
| 662 | 81 } |
| 82 | |
| 83 void MX_USART1_DMA_Init() | |
| 84 { | |
| 85 /* DMA controller clock enable */ | |
| 86 __DMA2_CLK_ENABLE(); | |
| 87 | |
| 88 /* Peripheral DMA init*/ | |
| 89 hdma_usart1_rx.Instance = DMA2_Stream5; | |
| 90 hdma_usart1_rx.Init.Channel = DMA_CHANNEL_4; | |
| 91 hdma_usart1_rx.Init.Direction = DMA_PERIPH_TO_MEMORY; //DMA_MEMORY_TO_PERIPH; | |
| 92 hdma_usart1_rx.Init.PeriphInc = DMA_PINC_DISABLE; | |
| 93 hdma_usart1_rx.Init.MemInc = DMA_MINC_ENABLE; | |
| 94 hdma_usart1_rx.Init.PeriphDataAlignment = DMA_MDATAALIGN_BYTE; | |
| 95 hdma_usart1_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE; | |
| 96 hdma_usart1_rx.Init.Mode = DMA_NORMAL; | |
| 97 hdma_usart1_rx.Init.Priority = DMA_PRIORITY_LOW; | |
| 98 hdma_usart1_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE; | |
| 99 HAL_DMA_Init(&hdma_usart1_rx); | |
| 100 | |
| 101 __HAL_LINKDMA(&huart1,hdmarx,hdma_usart1_rx); | |
| 102 | |
| 103 /* DMA interrupt init */ | |
| 104 HAL_NVIC_SetPriority(DMA2_Stream5_IRQn, 0, 0); | |
| 105 HAL_NVIC_EnableIRQ(DMA2_Stream5_IRQn); | |
| 38 | 106 } |
| 107 | |
| 794 | 108 void UART_MUX_SelectAddress(uint8_t muxAddress) |
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109 { |
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110 uint8_t indexstr[4]; |
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111 |
| 794 | 112 if(muxAddress <= MAX_MUX_CHANNEL) |
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113 { |
| 794 | 114 indexstr[0] = '~'; |
| 115 indexstr[1] = muxAddress; | |
| 116 indexstr[2] = 0x0D; | |
| 117 indexstr[3] = 0x0A; | |
| 118 | |
| 119 HAL_UART_Transmit(&huart1,indexstr,4,10); | |
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120 } |
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121 } |
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122 |
| 794 | 123 |
| 124 void UART_SendCmdString(uint8_t *cmdString) | |
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125 { |
| 794 | 126 uint8_t cmdLength = strlen((char*)cmdString); |
| 127 | |
| 128 if(cmdLength < 20) /* A longer string is an indication for a missing 0 termination */ | |
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129 { |
| 794 | 130 if(dmaActive == 0) |
| 131 { | |
| 132 UART_StartDMA_Receiption(); | |
| 133 } | |
| 134 HAL_UART_Transmit(&huart1,cmdString,cmdLength,10); | |
| 135 } | |
| 136 } | |
| 137 | |
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138 |
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139 void StringToInt(char *pstr, uint32_t *puInt32) |
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140 { |
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141 uint8_t index = 0; |
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142 uint32_t result = 0; |
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143 while((pstr[index] >= '0') && (pstr[index] <= '9')) |
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144 { |
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145 result *=10; |
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146 result += pstr[index] - '0'; |
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147 index++; |
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148 } |
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149 *puInt32 = result; |
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150 } |
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151 |
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152 void StringToUInt64(char *pstr, uint64_t *puint64) |
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153 { |
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154 uint8_t index = 0; |
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155 uint64_t result = 0; |
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156 while((pstr[index] >= '0') && (pstr[index] <= '9')) |
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157 { |
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158 result *=10; |
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159 result += pstr[index] - '0'; |
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160 index++; |
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161 } |
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162 *puint64 = result; |
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163 } |
| 662 | 164 |
| 742 | 165 void UART_StartDMA_Receiption() |
| 166 { | |
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167 if(dmaActive == 0) |
| 742 | 168 { |
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169 if(HAL_OK == HAL_UART_Receive_DMA (&huart1, &rxBuffer[rxWriteIndex], CHUNK_SIZE)) |
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170 { |
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171 dmaActive = 1; |
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172 } |
| 742 | 173 } |
| 174 } | |
| 690 | 175 |
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176 void UART_ChangeBaudrate(uint32_t newBaudrate) |
| 38 | 177 { |
| 809 | 178 uint8_t dmaWasActive = dmaActive; |
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179 // HAL_DMA_Abort(&hdma_usart1_rx); |
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180 MX_USART1_UART_DeInit(); |
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181 //HAL_UART_Abort(&huart1); |
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182 //HAL_DMA_DeInit(&hdma_usart1_rx); |
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183 |
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184 |
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185 // huart1.Instance->BRR = UART_BRR_SAMPLING8(HAL_RCC_GetPCLK2Freq()/2, newBaudrate); |
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186 huart1.Init.BaudRate = newBaudrate; |
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187 HAL_UART_Init(&huart1); |
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188 MX_USART1_DMA_Init(); |
| 809 | 189 if(dmaWasActive) |
| 794 | 190 { |
| 809 | 191 memset(rxBuffer,BUFFER_NODATA,sizeof(rxBuffer)); |
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192 rxReadIndex = 0; |
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193 rxWriteIndex = 0; |
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194 dmaActive = 0; |
| 742 | 195 UART_StartDMA_Receiption(); |
| 662 | 196 } |
| 38 | 197 } |
| 690 | 198 |
| 662 | 199 void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) |
| 38 | 200 { |
| 662 | 201 if(huart == &huart1) |
| 202 { | |
| 203 dmaActive = 0; | |
| 204 rxWriteIndex+=CHUNK_SIZE; | |
| 205 if(rxWriteIndex >= CHUNK_SIZE * CHUNKS_PER_BUFFER) | |
| 206 { | |
| 207 rxWriteIndex = 0; | |
| 208 } | |
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209 if((rxWriteIndex / CHUNK_SIZE) != (rxReadIndex / CHUNK_SIZE) || (rxWriteIndex == rxReadIndex)) /* start next transfer if we did not catch up with read index */ |
| 662 | 210 { |
| 809 | 211 UART_StartDMA_Receiption(); |
| 662 | 212 } |
| 213 } | |
| 38 | 214 } |
| 215 | |
| 794 | 216 void UART_ReadData(uint8_t sensorType) |
| 217 { | |
| 218 uint8_t localRX = rxReadIndex; | |
| 38 | 219 |
| 794 | 220 while((rxBuffer[localRX]!=BUFFER_NODATA)) |
| 221 { | |
| 222 switch (sensorType) | |
| 223 { | |
| 224 case SENSOR_MUX: | |
| 225 case SENSOR_DIGO2: uartO2_ProcessData(rxBuffer[localRX]); | |
| 226 break; | |
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227 #ifdef ENABLE_CO2_SUPPORT |
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228 case SENSOR_CO2: uartCo2_ProcessData(rxBuffer[localRX]); |
| 794 | 229 break; |
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230 #endif |
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231 #ifdef ENABLE_SENTINEL_MODE |
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232 case SENSOR_SENTINEL: uartSentinel_ProcessData(rxBuffer[localRX]); |
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233 break; |
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234 #endif |
| 794 | 235 default: |
| 236 break; | |
| 237 } | |
| 238 | |
| 239 rxBuffer[localRX] = BUFFER_NODATA; | |
| 240 localRX++; | |
| 241 rxReadIndex++; | |
| 242 if(rxReadIndex >= CHUNK_SIZE * CHUNKS_PER_BUFFER) | |
| 243 { | |
| 244 localRX = 0; | |
| 245 rxReadIndex = 0; | |
| 246 } | |
| 247 } | |
| 248 } | |
| 249 | |
| 250 void UART_FlushRxBuffer(void) | |
| 251 { | |
| 252 while(rxBuffer[rxReadIndex] != BUFFER_NODATA) | |
| 253 { | |
| 254 rxBuffer[rxReadIndex] = BUFFER_NODATA; | |
| 255 rxReadIndex++; | |
| 256 if(rxReadIndex >= CHUNK_SIZE * CHUNKS_PER_BUFFER) | |
| 257 { | |
| 258 rxReadIndex = 0; | |
| 259 } | |
| 260 } | |
| 261 } | |
| 662 | 262 |
| 861 | 263 uint8_t UART_isComActive(uint8_t sensorId) |
| 264 { | |
| 265 uint8_t active = 1; | |
| 809 | 266 |
| 861 | 267 uint8_t ComState = externalInterface_GetSensorState(sensorId + EXT_INTERFACE_MUX_OFFSET); |
| 268 | |
| 269 if((ComState == UART_COMMON_INIT) || (ComState == UART_COMMON_IDLE) || (ComState == UART_COMMON_ERROR)) | |
| 270 { | |
| 271 active = 0; | |
| 272 } | |
| 273 return active; | |
| 274 } | |
| 809 | 275 |
| 38 | 276 /************************ (C) COPYRIGHT heinrichs weikamp *****END OF FILE****/ |