annotate Small_CPU/Src/uart.c @ 804:391b3d420a39

Cleanup initialisation code: Some variables were not initialised during awake transition and the mapping of to the legacy adc slots were done at several location. This has been cleaned up not. Do not run UART during ADC sensor detection: A operation UART sensor caused the false detection of a not connected ADC sensor. To avoid this the UART is now deactivated during ADC detection phase.
author Ideenmodellierer
date Thu, 10 Aug 2023 21:35:34 +0200
parents 96ffad0a4e57
children 9602a7338f28
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1 /**
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2 ******************************************************************************
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3 * @file uart.c
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4 * @author heinrichs weikamp gmbh
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5 * @version V0.0.1
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6 * @date 27-March-2014
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7 * @brief button control
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8 *
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9 @verbatim
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10 ==============================================================================
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11 ##### How to use #####
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12 ==============================================================================
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13 @endverbatim
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14 ******************************************************************************
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15 * @attention
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16 *
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17 * <h2><center>&copy; COPYRIGHT(c) 2015 heinrichs weikamp</center></h2>
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18 *
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19 ******************************************************************************
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20 */
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21 /* Includes ------------------------------------------------------------------*/
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22 #include "uart.h"
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23 #include "uartProtocol_O2.h"
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24 #include "uartProtocol_Co2.h"
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25 #include "externalInterface.h"
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26 #include "data_exchange.h"
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27 #include <string.h> /* memset */
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29 /* Private variables ---------------------------------------------------------*/
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30
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33 #define CHUNK_SIZE (25u) /* the DMA will handle chunk size transfers */
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34 #define CHUNKS_PER_BUFFER (5u)
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35
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36 UART_HandleTypeDef huart1;
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37
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38 DMA_HandleTypeDef hdma_usart1_rx;
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39
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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 */
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45
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46
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47 static uint8_t SentinelConnected = 0; /* Binary indicator if a sensor is connected or not */
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50 /* Exported functions --------------------------------------------------------*/
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51
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52
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53 void MX_USART1_UART_Init(void)
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54 {
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55 /* regular init */
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56
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57 huart1.Instance = USART1;
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58 huart1.Init.BaudRate = 19200;
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59 huart1.Init.WordLength = UART_WORDLENGTH_8B;
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60 huart1.Init.StopBits = UART_STOPBITS_1;
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61 huart1.Init.Parity = UART_PARITY_NONE;
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62 huart1.Init.Mode = UART_MODE_TX_RX;
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63 huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
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64 huart1.Init.OverSampling = UART_OVERSAMPLING_16;
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65
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66 HAL_UART_Init(&huart1);
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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));
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71 rxReadIndex = 0;
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72 lastCmdIndex = 0;
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73 rxWriteIndex = 0;
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74 dmaActive = 0;
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76 SentinelConnected = 0;
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77
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78 }
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79
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80 void MX_USART1_UART_DeInit(void)
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81 {
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82 HAL_DMA_Abort(&hdma_usart1_rx);
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83 HAL_DMA_DeInit(&hdma_usart1_rx);
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84 HAL_UART_DeInit(&huart1);
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85 dmaActive = 0;
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86 }
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87
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88 void MX_USART1_DMA_Init()
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89 {
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90 /* DMA controller clock enable */
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91 __DMA2_CLK_ENABLE();
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92
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93 /* Peripheral DMA init*/
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94 hdma_usart1_rx.Instance = DMA2_Stream5;
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95 hdma_usart1_rx.Init.Channel = DMA_CHANNEL_4;
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96 hdma_usart1_rx.Init.Direction = DMA_PERIPH_TO_MEMORY; //DMA_MEMORY_TO_PERIPH;
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97 hdma_usart1_rx.Init.PeriphInc = DMA_PINC_DISABLE;
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98 hdma_usart1_rx.Init.MemInc = DMA_MINC_ENABLE;
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99 hdma_usart1_rx.Init.PeriphDataAlignment = DMA_MDATAALIGN_BYTE;
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100 hdma_usart1_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
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101 hdma_usart1_rx.Init.Mode = DMA_NORMAL;
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102 hdma_usart1_rx.Init.Priority = DMA_PRIORITY_LOW;
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103 hdma_usart1_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
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104 HAL_DMA_Init(&hdma_usart1_rx);
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105
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106 __HAL_LINKDMA(&huart1,hdmarx,hdma_usart1_rx);
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107
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108 /* DMA interrupt init */
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109 HAL_NVIC_SetPriority(DMA2_Stream5_IRQn, 0, 0);
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110 HAL_NVIC_EnableIRQ(DMA2_Stream5_IRQn);
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111 }
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112
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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
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117 if(muxAddress <= MAX_MUX_CHANNEL)
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118 {
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119 indexstr[0] = '~';
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120 indexstr[1] = muxAddress;
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121 indexstr[2] = 0x0D;
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122 indexstr[3] = 0x0A;
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123
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124 HAL_UART_Transmit(&huart1,indexstr,4,10);
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125 }
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126 }
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127
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128
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129 void UART_SendCmdString(uint8_t *cmdString)
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130 {
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131 uint8_t cmdLength = strlen((char*)cmdString);
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132
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133 if(cmdLength < 20) /* A longer string is an indication for a missing 0 termination */
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134 {
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135 if(dmaActive == 0)
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136 {
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137 UART_StartDMA_Receiption();
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138 }
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139 HAL_UART_Transmit(&huart1,cmdString,cmdLength,10);
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140 }
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141 }
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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 }
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169 void ConvertByteToHexString(uint8_t byte, char* str)
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170 {
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171 uint8_t worker = 0;
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172 uint8_t digit = 0;
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173 uint8_t digitCnt = 1;
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174
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175 worker = byte;
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176 while((worker!=0) && (digitCnt != 255))
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177 {
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178 digit = worker % 16;
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179 if( digit < 10)
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180 {
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181 digit += '0';
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182 }
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183 else
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184 {
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185 digit += 'A' - 10;
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186 }
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187 str[digitCnt--]= digit;
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188 worker = worker / 16;
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189 }
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190 }
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191
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192 void UART_StartDMA_Receiption()
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193 {
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194 if(dmaActive == 0)
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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 }
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200 }
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201 }
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202
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203 void UART_ChangeBaudrate(uint32_t newBaudrate)
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204 {
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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
bb37d4f3e50e Restructure UART based sensor handling:
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217 {
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218 rxReadIndex = 0;
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219 rxWriteIndex = 0;
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220 dmaActive = 0;
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221 UART_StartDMA_Receiption();
662
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222 }
38
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223 }
690
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224
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225 #ifdef ENABLE_SENTINEL_MODE
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226 void UART_HandleSentinelData(void)
690
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227 {
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228 uint8_t localRX = rxReadIndex;
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229 static uint8_t dataType = 0;
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230 static uint32_t dataValue[3];
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231 static uint8_t dataValueIdx = 0;
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232 static receiveState_t rxState = RX_Ready;
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233 static uint32_t lastReceiveTick = 0;
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234 static uint8_t lastAlive = 0;
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235 static uint8_t curAlive = 0;
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236 static uint8_t checksum = 0;
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237 static char checksum_str[]="00";
690
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238
742
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239 while((rxBuffer[localRX]!=0))
690
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240 {
fca2bd25e6e2 Added Sentinel protocoll support:
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241 lastReceiveTick = HAL_GetTick();
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242
fca2bd25e6e2 Added Sentinel protocoll support:
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243 switch(rxState)
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244 {
fca2bd25e6e2 Added Sentinel protocoll support:
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245 case RX_Ready: if((rxBuffer[localRX] >= 'a') && (rxBuffer[localRX] <= 'z'))
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246 {
fca2bd25e6e2 Added Sentinel protocoll support:
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247 rxState = RX_DetectStart;
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248 curAlive = rxBuffer[localRX];
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249 checksum = 0;
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250 }
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251 break;
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252
fca2bd25e6e2 Added Sentinel protocoll support:
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253 case RX_DetectStart: checksum += rxBuffer[localRX];
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254 if(rxBuffer[localRX] == '1')
fca2bd25e6e2 Added Sentinel protocoll support:
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255 {
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256 rxState = RX_SelectData;
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257 dataType = 0xFF;
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258
fca2bd25e6e2 Added Sentinel protocoll support:
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diff changeset
259 }
fca2bd25e6e2 Added Sentinel protocoll support:
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diff changeset
260 else
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diff changeset
261 {
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262 rxState = RX_Ready;
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263 }
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264 break;
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265
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266 case RX_SelectData: checksum += rxBuffer[localRX];
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267 switch(rxBuffer[localRX])
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268 {
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269 case 'T': dataType = rxBuffer[localRX];
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270 break;
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271 case '0': if(dataType != 0xff)
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272 {
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273 rxState = RX_Data0;
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274 dataValueIdx = 0;
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275 dataValue[0] = 0;
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276
fca2bd25e6e2 Added Sentinel protocoll support:
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diff changeset
277 }
fca2bd25e6e2 Added Sentinel protocoll support:
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diff changeset
278 else
fca2bd25e6e2 Added Sentinel protocoll support:
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diff changeset
279 {
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280 rxState = RX_Ready;
fca2bd25e6e2 Added Sentinel protocoll support:
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diff changeset
281 }
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282 break;
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283 default: rxState = RX_Ready;
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284 }
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285 break;
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286
fca2bd25e6e2 Added Sentinel protocoll support:
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287 case RX_Data0:
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288 case RX_Data1:
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289 case RX_Data2:
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290 case RX_Data4:
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291 case RX_Data5:
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292 case RX_Data6:
fca2bd25e6e2 Added Sentinel protocoll support:
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293 case RX_Data8:
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294 case RX_Data9:
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295 case RX_Data10: checksum += rxBuffer[localRX];
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diff changeset
296 if((rxBuffer[localRX] >= '0') && (rxBuffer[localRX] <= '9'))
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diff changeset
297 {
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298 dataValue[dataValueIdx] = dataValue[dataValueIdx] * 10 + (rxBuffer[localRX] - '0');
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diff changeset
299 rxState++;
fca2bd25e6e2 Added Sentinel protocoll support:
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diff changeset
300 }
fca2bd25e6e2 Added Sentinel protocoll support:
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parents: 662
diff changeset
301 else
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parents: 662
diff changeset
302 {
fca2bd25e6e2 Added Sentinel protocoll support:
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diff changeset
303 rxState = RX_Ready;
fca2bd25e6e2 Added Sentinel protocoll support:
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diff changeset
304 }
fca2bd25e6e2 Added Sentinel protocoll support:
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diff changeset
305 break;
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diff changeset
306
fca2bd25e6e2 Added Sentinel protocoll support:
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diff changeset
307 case RX_Data3:
fca2bd25e6e2 Added Sentinel protocoll support:
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diff changeset
308 case RX_Data7: checksum += rxBuffer[localRX];
fca2bd25e6e2 Added Sentinel protocoll support:
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diff changeset
309 if(rxBuffer[localRX] == '0')
fca2bd25e6e2 Added Sentinel protocoll support:
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diff changeset
310 {
fca2bd25e6e2 Added Sentinel protocoll support:
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diff changeset
311 rxState++;
fca2bd25e6e2 Added Sentinel protocoll support:
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diff changeset
312 dataValueIdx++;
fca2bd25e6e2 Added Sentinel protocoll support:
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diff changeset
313 dataValue[dataValueIdx] = 0;
fca2bd25e6e2 Added Sentinel protocoll support:
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parents: 662
diff changeset
314 }
fca2bd25e6e2 Added Sentinel protocoll support:
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diff changeset
315 else
fca2bd25e6e2 Added Sentinel protocoll support:
Ideenmodellierer
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diff changeset
316 {
fca2bd25e6e2 Added Sentinel protocoll support:
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diff changeset
317 rxState = RX_Ready;
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diff changeset
318 }
fca2bd25e6e2 Added Sentinel protocoll support:
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diff changeset
319 break;
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diff changeset
320 case RX_Data11: rxState = RX_DataComplete;
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diff changeset
321 ConvertByteToHexString(checksum,checksum_str);
fca2bd25e6e2 Added Sentinel protocoll support:
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diff changeset
322 if(rxBuffer[localRX] == checksum_str[0])
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diff changeset
323 {
fca2bd25e6e2 Added Sentinel protocoll support:
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diff changeset
324 rxState = RX_DataComplete;
fca2bd25e6e2 Added Sentinel protocoll support:
Ideenmodellierer
parents: 662
diff changeset
325 }
fca2bd25e6e2 Added Sentinel protocoll support:
Ideenmodellierer
parents: 662
diff changeset
326 else
fca2bd25e6e2 Added Sentinel protocoll support:
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diff changeset
327 {
fca2bd25e6e2 Added Sentinel protocoll support:
Ideenmodellierer
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diff changeset
328 rxState = RX_Ready;
fca2bd25e6e2 Added Sentinel protocoll support:
Ideenmodellierer
parents: 662
diff changeset
329 }
fca2bd25e6e2 Added Sentinel protocoll support:
Ideenmodellierer
parents: 662
diff changeset
330
fca2bd25e6e2 Added Sentinel protocoll support:
Ideenmodellierer
parents: 662
diff changeset
331 break;
fca2bd25e6e2 Added Sentinel protocoll support:
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parents: 662
diff changeset
332
fca2bd25e6e2 Added Sentinel protocoll support:
Ideenmodellierer
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diff changeset
333 case RX_DataComplete: if(rxBuffer[localRX] == checksum_str[1])
fca2bd25e6e2 Added Sentinel protocoll support:
Ideenmodellierer
parents: 662
diff changeset
334 {
fca2bd25e6e2 Added Sentinel protocoll support:
Ideenmodellierer
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diff changeset
335 setExternalInterfaceChannel(0,(float)(dataValue[0] / 10.0));
fca2bd25e6e2 Added Sentinel protocoll support:
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diff changeset
336 setExternalInterfaceChannel(1,(float)(dataValue[1] / 10.0));
fca2bd25e6e2 Added Sentinel protocoll support:
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diff changeset
337 setExternalInterfaceChannel(2,(float)(dataValue[2] / 10.0));
742
e23fe82cbf8c Update Sentinel protocol:
Ideenmodellierer
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diff changeset
338 SentinelConnected = 1;
690
fca2bd25e6e2 Added Sentinel protocoll support:
Ideenmodellierer
parents: 662
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339 }
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340 rxState = RX_Ready;
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341 break;
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342
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343
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344 default: rxState = RX_Ready;
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345 break;
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346
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347 }
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348 localRX++;
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349 rxReadIndex++;
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350 if(rxReadIndex >= CHUNK_SIZE * CHUNKS_PER_BUFFER)
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351 {
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352 localRX = 0;
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353 rxReadIndex = 0;
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354 }
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355 }
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356
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357 if(time_elapsed_ms(lastReceiveTick,HAL_GetTick()) > 4000) /* check for communication timeout */
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358 {
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359 if(curAlive == lastAlive)
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360 {
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361 setExternalInterfaceChannel(0,0.0);
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362 setExternalInterfaceChannel(1,0.0);
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363 setExternalInterfaceChannel(2,0.0);
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364 SentinelConnected = 0;
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365 }
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366 lastAlive = curAlive;
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367 }
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368
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369 if((dmaActive == 0) && (externalInterface_isEnabledPower33())) /* Should never happen in normal operation => restart in case of communication error */
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370 {
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371 UART_StartDMA_Receiption();
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372 }
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373 }
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374 #endif
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375
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376
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377
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378 uint8_t UART_isSentinelConnected()
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379 {
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380 return SentinelConnected;
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381 }
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382
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383 void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
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384 {
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385 if(huart == &huart1)
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386 {
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387 dmaActive = 0;
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388 rxWriteIndex+=CHUNK_SIZE;
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389 if(rxWriteIndex >= CHUNK_SIZE * CHUNKS_PER_BUFFER)
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390 {
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391 rxWriteIndex = 0;
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392 }
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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 */
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394 {
787
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395 if(externalInterface_GetUARTProtocol() != 0)
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396 {
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397 UART_StartDMA_Receiption();
662
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398 }
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399 }
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400 }
38
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401 }
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402
794
bb37d4f3e50e Restructure UART based sensor handling:
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403 void UART_ReadData(uint8_t sensorType)
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404 {
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405 uint8_t localRX = rxReadIndex;
38
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406
794
bb37d4f3e50e Restructure UART based sensor handling:
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407 while((rxBuffer[localRX]!=BUFFER_NODATA))
bb37d4f3e50e Restructure UART based sensor handling:
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408 {
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409 switch (sensorType)
bb37d4f3e50e Restructure UART based sensor handling:
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410 {
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411 case SENSOR_MUX:
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412 case SENSOR_DIGO2: uartO2_ProcessData(rxBuffer[localRX]);
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413 break;
798
e9eba334b942 Migrated CO2 protocol implementation to new format:
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414 #ifdef ENABLE_CO2_SUPPORT
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415 case SENSOR_CO2: uartCo2_ProcessData(rxBuffer[localRX]);
794
bb37d4f3e50e Restructure UART based sensor handling:
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416 break;
798
e9eba334b942 Migrated CO2 protocol implementation to new format:
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417 #endif
794
bb37d4f3e50e Restructure UART based sensor handling:
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418 default:
bb37d4f3e50e Restructure UART based sensor handling:
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419 break;
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420 }
bb37d4f3e50e Restructure UART based sensor handling:
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421
bb37d4f3e50e Restructure UART based sensor handling:
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422 rxBuffer[localRX] = BUFFER_NODATA;
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423 localRX++;
bb37d4f3e50e Restructure UART based sensor handling:
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424 rxReadIndex++;
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425 if(rxReadIndex >= CHUNK_SIZE * CHUNKS_PER_BUFFER)
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426 {
bb37d4f3e50e Restructure UART based sensor handling:
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427 localRX = 0;
bb37d4f3e50e Restructure UART based sensor handling:
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428 rxReadIndex = 0;
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429 }
bb37d4f3e50e Restructure UART based sensor handling:
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diff changeset
430 }
bb37d4f3e50e Restructure UART based sensor handling:
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431 }
bb37d4f3e50e Restructure UART based sensor handling:
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432
bb37d4f3e50e Restructure UART based sensor handling:
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433 void UART_FlushRxBuffer(void)
bb37d4f3e50e Restructure UART based sensor handling:
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434 {
bb37d4f3e50e Restructure UART based sensor handling:
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435 while(rxBuffer[rxReadIndex] != BUFFER_NODATA)
bb37d4f3e50e Restructure UART based sensor handling:
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diff changeset
436 {
bb37d4f3e50e Restructure UART based sensor handling:
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437 rxBuffer[rxReadIndex] = BUFFER_NODATA;
bb37d4f3e50e Restructure UART based sensor handling:
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438 rxReadIndex++;
bb37d4f3e50e Restructure UART based sensor handling:
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diff changeset
439 if(rxReadIndex >= CHUNK_SIZE * CHUNKS_PER_BUFFER)
bb37d4f3e50e Restructure UART based sensor handling:
Ideenmodellierer
parents: 787
diff changeset
440 {
bb37d4f3e50e Restructure UART based sensor handling:
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441 rxReadIndex = 0;
bb37d4f3e50e Restructure UART based sensor handling:
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442 }
bb37d4f3e50e Restructure UART based sensor handling:
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diff changeset
443 }
bb37d4f3e50e Restructure UART based sensor handling:
Ideenmodellierer
parents: 787
diff changeset
444
bb37d4f3e50e Restructure UART based sensor handling:
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diff changeset
445 }
662
1b995079c045 PSCR Mode
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446
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447 /************************ (C) COPYRIGHT heinrichs weikamp *****END OF FILE****/