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annotate Small_CPU/Src/uart.c @ 870:bc6c90e20d9e Evo_2_23

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Instrument code for Bootloader: the Bootloader was reactivated. Because some functions have changed in the past years an instrumentation had to be done to avoid compile issues (e.g. no multilanguage in Bootloader, no special fonts)
author Ideenmodellierer
date Mon, 12 Aug 2024 22:25:46 +0200
parents ad96f99ebc78
children cf3967fe6924
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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 "uartProtocol_Sentinel.h"
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26 #include "externalInterface.h"
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27 #include "data_exchange.h"
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28 #include <string.h> /* memset */
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30 /* Private variables ---------------------------------------------------------*/
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31
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33
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34 #define CHUNK_SIZE (25u) /* the DMA will handle chunk size transfers */
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35 #define CHUNKS_PER_BUFFER (5u)
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36
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37 UART_HandleTypeDef huart1;
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38
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39 DMA_HandleTypeDef hdma_usart1_rx;
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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 */
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46
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48 /* Exported functions --------------------------------------------------------*/
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49
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50
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51 void MX_USART1_UART_Init(void)
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52 {
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53 /* regular init */
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54
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55 huart1.Instance = USART1;
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56 huart1.Init.BaudRate = 19200;
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57 huart1.Init.WordLength = UART_WORDLENGTH_8B;
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58 huart1.Init.StopBits = UART_STOPBITS_1;
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59 huart1.Init.Parity = UART_PARITY_NONE;
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60 huart1.Init.Mode = UART_MODE_TX_RX;
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61 huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
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62 huart1.Init.OverSampling = UART_OVERSAMPLING_16;
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63
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64 HAL_UART_Init(&huart1);
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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));
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69 rxReadIndex = 0;
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70 lastCmdIndex = 0;
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71 rxWriteIndex = 0;
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72 dmaActive = 0;
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73 }
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74
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75 void MX_USART1_UART_DeInit(void)
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76 {
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77 HAL_DMA_Abort(&hdma_usart1_rx);
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78 HAL_DMA_DeInit(&hdma_usart1_rx);
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79 HAL_UART_DeInit(&huart1);
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80 dmaActive = 0;
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81 }
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82
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83 void MX_USART1_DMA_Init()
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84 {
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85 /* DMA controller clock enable */
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86 __DMA2_CLK_ENABLE();
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87
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88 /* Peripheral DMA init*/
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89 hdma_usart1_rx.Instance = DMA2_Stream5;
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90 hdma_usart1_rx.Init.Channel = DMA_CHANNEL_4;
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91 hdma_usart1_rx.Init.Direction = DMA_PERIPH_TO_MEMORY; //DMA_MEMORY_TO_PERIPH;
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92 hdma_usart1_rx.Init.PeriphInc = DMA_PINC_DISABLE;
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93 hdma_usart1_rx.Init.MemInc = DMA_MINC_ENABLE;
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94 hdma_usart1_rx.Init.PeriphDataAlignment = DMA_MDATAALIGN_BYTE;
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95 hdma_usart1_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
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96 hdma_usart1_rx.Init.Mode = DMA_NORMAL;
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97 hdma_usart1_rx.Init.Priority = DMA_PRIORITY_LOW;
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98 hdma_usart1_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
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99 HAL_DMA_Init(&hdma_usart1_rx);
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100
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101 __HAL_LINKDMA(&huart1,hdmarx,hdma_usart1_rx);
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102
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103 /* DMA interrupt init */
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104 HAL_NVIC_SetPriority(DMA2_Stream5_IRQn, 0, 0);
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105 HAL_NVIC_EnableIRQ(DMA2_Stream5_IRQn);
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106 }
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107
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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
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112 if(muxAddress <= MAX_MUX_CHANNEL)
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113 {
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114 indexstr[0] = '~';
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115 indexstr[1] = muxAddress;
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116 indexstr[2] = 0x0D;
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117 indexstr[3] = 0x0A;
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118
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119 HAL_UART_Transmit(&huart1,indexstr,4,10);
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120 }
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121 }
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122
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123
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124 void UART_SendCmdString(uint8_t *cmdString)
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125 {
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126 uint8_t cmdLength = strlen((char*)cmdString);
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127
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128 if(cmdLength < 20) /* A longer string is an indication for a missing 0 termination */
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129 {
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130 if(dmaActive == 0)
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131 {
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132 UART_StartDMA_Receiption();
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133 }
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134 HAL_UART_Transmit(&huart1,cmdString,cmdLength,10);
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135 }
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136 }
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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 }
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164
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165 void UART_StartDMA_Receiption()
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166 {
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167 if(dmaActive == 0)
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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 }
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173 }
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174 }
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175
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176 void UART_ChangeBaudrate(uint32_t newBaudrate)
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177 {
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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();
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189 if(dmaWasActive)
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190 {
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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;
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195 UART_StartDMA_Receiption();
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196 }
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197 }
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198
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199 void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
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200 {
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201 if(huart == &huart1)
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202 {
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203 dmaActive = 0;
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204 rxWriteIndex+=CHUNK_SIZE;
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205 if(rxWriteIndex >= CHUNK_SIZE * CHUNKS_PER_BUFFER)
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206 {
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207 rxWriteIndex = 0;
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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 */
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210 {
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211 UART_StartDMA_Receiption();
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212 }
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213 }
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214 }
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215
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216 void UART_ReadData(uint8_t sensorType)
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217 {
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218 uint8_t localRX = rxReadIndex;
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219
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220 while((rxBuffer[localRX]!=BUFFER_NODATA))
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221 {
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222 switch (sensorType)
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223 {
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224 case SENSOR_MUX:
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225 case SENSOR_DIGO2: uartO2_ProcessData(rxBuffer[localRX]);
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226 break;
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227 #ifdef ENABLE_CO2_SUPPORT
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228 case SENSOR_CO2: uartCo2_ProcessData(rxBuffer[localRX]);
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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
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235 default:
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236 break;
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237 }
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238
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239 rxBuffer[localRX] = BUFFER_NODATA;
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240 localRX++;
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241 rxReadIndex++;
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242 if(rxReadIndex >= CHUNK_SIZE * CHUNKS_PER_BUFFER)
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243 {
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244 localRX = 0;
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245 rxReadIndex = 0;
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246 }
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247 }
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248 }
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249
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250 void UART_FlushRxBuffer(void)
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251 {
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252 while(rxBuffer[rxReadIndex] != BUFFER_NODATA)
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253 {
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254 rxBuffer[rxReadIndex] = BUFFER_NODATA;
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255 rxReadIndex++;
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256 if(rxReadIndex >= CHUNK_SIZE * CHUNKS_PER_BUFFER)
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257 {
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258 rxReadIndex = 0;
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259 }
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260 }
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261 }
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262
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263 uint8_t UART_isComActive(uint8_t sensorId)
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264 {
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265 uint8_t active = 1;
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266
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267 uint8_t ComState = externalInterface_GetSensorState(sensorId + EXT_INTERFACE_MUX_OFFSET);
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268
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269 if((ComState == UART_COMMON_INIT) || (ComState == UART_COMMON_IDLE) || (ComState == UART_COMMON_ERROR))
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270 {
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271 active = 0;
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272 }
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273 return active;
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274 }
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275
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276 /************************ (C) COPYRIGHT heinrichs weikamp *****END OF FILE****/