Mercurial > public > ostc4
view Small_CPU/Src/uart.c @ 701:8c48553a0176
Bugfix display of deactivated sensors:
In the previous version disabled sensors had been show after startup. Rootcause was that the deactivation state was taken from the divesettings instead of the common setting. After startup divesettings are not initialized and therefore all three sensors were displayed even if one or more were disabled. This has been fixed by using the common settings in case that the OSTC is not in divemode.
author | Ideenmodellierer |
---|---|
date | Fri, 28 Oct 2022 19:39:20 +0200 |
parents | fca2bd25e6e2 |
children | f1b40364b0af |
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/** ****************************************************************************** * @file uart.c * @author heinrichs weikamp gmbh * @version V0.0.1 * @date 27-March-2014 * @brief button control * @verbatim ============================================================================== ##### How to use ##### ============================================================================== @endverbatim ****************************************************************************** * @attention * * <h2><center>© COPYRIGHT(c) 2015 heinrichs weikamp</center></h2> * ****************************************************************************** */ /* Includes ------------------------------------------------------------------*/ #include "uart.h" #include "externalInterface.h" #include "data_exchange.h" /* Private variables ---------------------------------------------------------*/ #define CHUNK_SIZE (20u) /* the DMA will handle chunk size transfers */ #define CHUNKS_PER_BUFFER (3u) UART_HandleTypeDef huart1; DMA_HandleTypeDef hdma_usart1_rx; uint8_t rxBuffer[CHUNK_SIZE * CHUNKS_PER_BUFFER]; /* The complete buffer has a X * chunk size to allow fariations in buffer read time */ static uint8_t rxWriteIndex; /* Index of the data item which is analysed */ static uint8_t rxReadIndex; /* Index at which new data is stared */ static uint8_t lastCmdIndex; /* Index of last command which has not been completly received */ static uint8_t dmaActive; /* Indicator if DMA receiption needs to be started */ float LED_Level = 0.0; /* Normalized LED value which may be used as indication for the health status of the sensor */ float LED_ZeroOffset = 0.0; float pCO2 = 0.0; /* Exported functions --------------------------------------------------------*/ void MX_USART1_UART_Init(void) { /* regular init */ huart1.Instance = USART1; huart1.Init.BaudRate = 9600; huart1.Init.WordLength = UART_WORDLENGTH_8B; huart1.Init.StopBits = UART_STOPBITS_1; huart1.Init.Parity = UART_PARITY_NONE; huart1.Init.Mode = UART_MODE_TX_RX; huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE; huart1.Init.OverSampling = UART_OVERSAMPLING_16; HAL_UART_Init(&huart1); rxReadIndex = 0; lastCmdIndex = 0; rxWriteIndex = 0; dmaActive = 0; } void MX_USART1_UART_DeInit(void) { HAL_DMA_DeInit(&hdma_usart1_rx); HAL_UART_DeInit(&huart1); } void MX_USART1_DMA_Init() { /* DMA controller clock enable */ __DMA2_CLK_ENABLE(); /* Peripheral DMA init*/ hdma_usart1_rx.Instance = DMA2_Stream5; hdma_usart1_rx.Init.Channel = DMA_CHANNEL_4; hdma_usart1_rx.Init.Direction = DMA_PERIPH_TO_MEMORY; //DMA_MEMORY_TO_PERIPH; hdma_usart1_rx.Init.PeriphInc = DMA_PINC_DISABLE; hdma_usart1_rx.Init.MemInc = DMA_MINC_ENABLE; hdma_usart1_rx.Init.PeriphDataAlignment = DMA_MDATAALIGN_BYTE; hdma_usart1_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE; hdma_usart1_rx.Init.Mode = DMA_NORMAL; hdma_usart1_rx.Init.Priority = DMA_PRIORITY_LOW; hdma_usart1_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE; HAL_DMA_Init(&hdma_usart1_rx); __HAL_LINKDMA(&huart1,hdmarx,hdma_usart1_rx); /* DMA interrupt init */ HAL_NVIC_SetPriority(DMA2_Stream5_IRQn, 0, 0); HAL_NVIC_EnableIRQ(DMA2_Stream5_IRQn); } void ConvertByteToHexString(uint8_t byte, char* str) { uint8_t worker = 0; uint8_t digit = 0; uint8_t digitCnt = 1; worker = byte; while((worker!=0) && (digitCnt != 255)) { digit = worker % 16; if( digit < 10) { digit += '0'; } else { digit += 'A' - 10; } str[digitCnt--]= digit; worker = worker / 16; } } #ifdef ENABLE_CO2_SUPPORT void HandleUARTCO2Data(void) { uint8_t localRX = rxReadIndex; uint8_t dataType = 0; uint32_t dataValue = 0; static receiveState_t rxState = RX_Ready; static uint32_t lastReceiveTick = 0; while(localRX != rxWriteIndex) { lastReceiveTick = HAL_GetTick(); if(rxState == RX_Ready) /* identify data content */ { switch(rxBuffer[localRX]) { case 'l': case 'D': case 'Z': dataType = rxBuffer[localRX]; rxState = RX_Data0; dataValue = 0; break; default: /* unknown or corrupted => ignore */ break; } } else if((rxState >= RX_Data0) && (rxState <= RX_Data4)) { if((rxBuffer[localRX] >= '0') && (rxBuffer[localRX] <= '9')) { dataValue = dataValue * 10 + (rxBuffer[localRX] - '0'); rxState++; } } if((rxBuffer[localRX] == ' ') || (rxBuffer[localRX] == '\n')) /* Abort data detection */ { if(rxState == RX_DataComplete) { if(externalInterface_GetCO2State() == 0) { externalInterface_SetCO2State(EXT_INTERFACE_33V_ON); } switch(dataType) { case 'D': externalInterface_SetCO2SignalStrength(dataValue); break; case 'l': LED_ZeroOffset = dataValue; break; case 'Z': externalInterface_SetCO2Value(dataValue); break; default: break; } } if(rxState != RX_Data0) /* reset state machine because message in wrong format */ { rxState = RX_Ready; } } localRX++; rxReadIndex++; if(rxReadIndex >= CHUNK_SIZE * CHUNKS_PER_BUFFER) { localRX = 0; rxReadIndex = 0; } } if(time_elapsed_ms(lastReceiveTick,HAL_GetTick()) > 2000) /* check for communication timeout */ { externalInterface_SetCO2State(0); } if((dmaActive == 0) && (externalInterface_isEnabledPower33())) /* Should never happen in normal operation => restart in case of communication error */ { if(HAL_OK == HAL_UART_Receive_DMA (&huart1, &rxBuffer[rxWriteIndex], CHUNK_SIZE)) { dmaActive = 1; } } } #endif #ifdef ENABLE_SENTINEL_MODE void HandleUARTSentinelData(void) { uint8_t localRX = rxReadIndex; static uint8_t dataType = 0; static uint32_t dataValue[3]; static uint8_t dataValueIdx = 0; static receiveState_t rxState = RX_Ready; static uint32_t lastReceiveTick = 0; static uint8_t lastAlive = 0; static uint8_t curAlive = 0; static uint8_t checksum = 0; char checksum_str[]="00"; while(localRX != rxWriteIndex) { lastReceiveTick = HAL_GetTick(); switch(rxState) { case RX_Ready: if((rxBuffer[localRX] >= 'a') && (rxBuffer[localRX] <= 'z')) { rxState = RX_DetectStart; curAlive = rxBuffer[localRX]; checksum = 0; } break; case RX_DetectStart: checksum += rxBuffer[localRX]; if(rxBuffer[localRX] == '1') { rxState = RX_SelectData; dataType = 0xFF; } else { rxState = RX_Ready; } break; case RX_SelectData: checksum += rxBuffer[localRX]; switch(rxBuffer[localRX]) { case 'T': dataType = rxBuffer[localRX]; break; case '0': if(dataType != 0xff) { rxState = RX_Data0; dataValueIdx = 0; dataValue[0] = 0; } else { rxState = RX_Ready; } break; default: rxState = RX_Ready; } break; case RX_Data0: case RX_Data1: case RX_Data2: case RX_Data4: case RX_Data5: case RX_Data6: case RX_Data8: case RX_Data9: case RX_Data10: checksum += rxBuffer[localRX]; if((rxBuffer[localRX] >= '0') && (rxBuffer[localRX] <= '9')) { dataValue[dataValueIdx] = dataValue[dataValueIdx] * 10 + (rxBuffer[localRX] - '0'); rxState++; } else { rxState = RX_Ready; } break; case RX_Data3: case RX_Data7: checksum += rxBuffer[localRX]; if(rxBuffer[localRX] == '0') { rxState++; dataValueIdx++; dataValue[dataValueIdx] = 0; } else { rxState = RX_Ready; } break; case RX_Data11: rxState = RX_DataComplete; ConvertByteToHexString(checksum,checksum_str); if(rxBuffer[localRX] == checksum_str[0]) { rxState = RX_DataComplete; } else { rxState = RX_Ready; } break; case RX_DataComplete: if(rxBuffer[localRX] == checksum_str[1]) { setExternalInterfaceChannel(0,(float)(dataValue[0] / 10.0)); setExternalInterfaceChannel(1,(float)(dataValue[1] / 10.0)); setExternalInterfaceChannel(2,(float)(dataValue[2] / 10.0)); } rxState = RX_Ready; break; default: rxState = RX_Ready; break; } localRX++; rxReadIndex++; if(rxReadIndex >= CHUNK_SIZE * CHUNKS_PER_BUFFER) { localRX = 0; rxReadIndex = 0; } } if(time_elapsed_ms(lastReceiveTick,HAL_GetTick()) > 4000) /* check for communication timeout */ { if(curAlive == lastAlive) { setExternalInterfaceChannel(0,0.0); setExternalInterfaceChannel(1,0.0); setExternalInterfaceChannel(2,0.0); } lastAlive = curAlive; } if((dmaActive == 0) && (externalInterface_isEnabledPower33())) /* Should never happen in normal operation => restart in case of communication error */ { if(HAL_OK == HAL_UART_Receive_DMA (&huart1, &rxBuffer[rxWriteIndex], CHUNK_SIZE)) { dmaActive = 1; } } } #endif void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) { if(huart == &huart1) { dmaActive = 0; rxWriteIndex+=CHUNK_SIZE; if(rxWriteIndex >= CHUNK_SIZE * CHUNKS_PER_BUFFER) { rxWriteIndex = 0; } if((rxWriteIndex / CHUNK_SIZE) != (rxReadIndex / CHUNK_SIZE)) /* start next transfer if we did not catch up with read index */ { if(externalInterface_isEnabledPower33()) { if(HAL_OK == HAL_UART_Receive_DMA (&huart1, &rxBuffer[rxWriteIndex], CHUNK_SIZE)) { dmaActive = 1; } } } } } /************************ (C) COPYRIGHT heinrichs weikamp *****END OF FILE****/