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38
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1 #include "baseCPU2.h"
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2 #include "i2c.h"
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3 #include "scheduler.h"
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4
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5 /* Private typedef -----------------------------------------------------------*/
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6 /* Private define ------------------------------------------------------------*/
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7 /* Private macro -------------------------------------------------------------*/
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8
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9
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10 // ===============================================================================
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11 // I2C addresses - see i2c.h
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12 ///
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13 /// #define DEVICE_PRESSURE 0xEE (0x77) Write 0xEE Read 0xEF
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14 /// #define DEVICE_COMPASS_HMC5883L 0x3C (0x1E) Write 0x3C Read 0x3D
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15 /// #define DEVICE_ACCELARATOR_MMA8452Q 0x38 (0x1C) Write 0x38 Read 0x39
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16 /// #define DEVICE_BATTERYGAUGE 0xC8 (0x64) Write 0xC8
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17
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18 /// #define DEVICE_COMPASS_303D 0x3C // 0x1E // x0011110 // SA0 to GND
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19 ///
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20 /// 0x6E 0x48 -> 0x6F 3d d1 86 3f 0x66 58
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21 ///
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22 // ===============================================================================
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23 I2C_HandleTypeDef I2cHandle;
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24
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25
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26 /*
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27 static void I2C_Error_Handler(void)
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28 {
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29 while(1)
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30 {
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31 }
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32 }
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33 */
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34
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35 HAL_StatusTypeDef I2C1_Status(void)
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36 {
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37 return (HAL_StatusTypeDef)global.I2C_SystemStatus;
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38 }
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39
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40
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41 GPIO_PinState HAL_I2C_Read_Data_PIN(void)
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42 {
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43 return HAL_GPIO_ReadPin(I2Cx_SDA_GPIO_PORT,I2Cx_SDA_PIN);
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44 }
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45
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46 void HAL_I2C_Send_One_CLOCK(void)
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47 {
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48 HAL_GPIO_WritePin(I2Cx_SCL_GPIO_PORT, I2Cx_SCL_PIN, GPIO_PIN_RESET);
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49 HAL_Delay(10);
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50 HAL_GPIO_WritePin(I2Cx_SCL_GPIO_PORT, I2Cx_SCL_PIN, GPIO_PIN_SET);
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51 HAL_Delay(10);
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52 }
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53
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54 GPIO_PinState MX_I2C1_TestAndClear(void)
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55 {
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56 I2C_DeInit();
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57 HAL_I2C_ManualControl_MspInit();
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58 for(int i=0; i<9;i++)
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59 {
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60 if(HAL_I2C_Read_Data_PIN() == GPIO_PIN_RESET)
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61 HAL_I2C_Send_One_CLOCK();
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62 else
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63 break;
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64 }
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65 return HAL_I2C_Read_Data_PIN();
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66 }
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67
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68 HAL_StatusTypeDef MX_I2C1_Init(void)
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69 {
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70 I2cHandle.Instance = I2Cx;
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71 I2cHandle.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
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82
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72 I2cHandle.Init.ClockSpeed = 400000;//400000;
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38
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73 I2cHandle.Init.DualAddressMode = I2C_DUALADDRESS_DISABLED;
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74 I2cHandle.Init.DutyCycle = I2C_DUTYCYCLE_16_9;
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75 I2cHandle.Init.GeneralCallMode = I2C_GENERALCALL_DISABLED;
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76 I2cHandle.Init.NoStretchMode = I2C_NOSTRETCH_DISABLED;
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77 I2cHandle.Init.OwnAddress1 = 0x01;
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78
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79 global.dataSendToSlaveStopEval = 1;
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80
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81 global.I2C_SystemStatus = HAL_I2C_Init(&I2cHandle);
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82
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82 HAL_I2CEx_AnalogFilter_Config(&I2cHandle, I2C_ANALOGFILTER_ENABLED);
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83
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38
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84
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85 global.dataSendToSlaveStopEval = 0;
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86 if(global.dataSendToSlavePending)
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87 {
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88 scheduleSpecial_Evaluate_DataSendToSlave();
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89 }
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90 return (HAL_StatusTypeDef)global.I2C_SystemStatus;
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91 }
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92
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93
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94 void I2C_DeInit(void)
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95 {
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96 HAL_I2C_DeInit(&I2cHandle);
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97 }
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98
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99
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100 uint8_t i2c_errors = 0;
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101
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102 void I2C_Error_count(void)
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103 {
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104 i2c_errors++;
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105 }
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106
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107
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108 HAL_StatusTypeDef I2C_Master_TransmitNoStop( uint16_t DevAddress, uint8_t *pData, uint16_t Size)
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109 {
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110 if(global.I2C_SystemStatus != HAL_OK)
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111 return (HAL_StatusTypeDef)global.I2C_SystemStatus;
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112
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113 global.dataSendToSlaveStopEval = 1;
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114
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115 global.I2C_SystemStatus = HAL_I2C_Master_Transmit(&I2cHandle, DevAddress, pData, Size, 100 /*FIXME , 0*/);
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116 if(global.I2C_SystemStatus != HAL_OK)
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117 {
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118 I2C_Error_count();
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119 }
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120 global.dataSendToSlaveStopEval = 0;
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121 if(global.dataSendToSlavePending)
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122 {
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123 scheduleSpecial_Evaluate_DataSendToSlave();
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124 }
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125 return (HAL_StatusTypeDef)global.I2C_SystemStatus;
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126 }
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127
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128
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129 HAL_StatusTypeDef I2C_Master_Transmit( uint16_t DevAddress, uint8_t *pData, uint16_t Size)
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130 {
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131 if(global.I2C_SystemStatus != HAL_OK)
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132 return (HAL_StatusTypeDef)(global.I2C_SystemStatus & 0x03);
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133
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134
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135 global.dataSendToSlaveStopEval = 1;
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136
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137 global.I2C_SystemStatus = HAL_I2C_Master_Transmit(&I2cHandle, DevAddress, pData, Size, 100 /*FIXME , 1*/);
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138 if(global.I2C_SystemStatus != HAL_OK)
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139 {
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140 I2C_Error_count();
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141 }
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142
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143 global.dataSendToSlaveStopEval = 0;
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144 if(global.dataSendToSlavePending)
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145 {
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146 scheduleSpecial_Evaluate_DataSendToSlave();
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147 }
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148
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149 return (HAL_StatusTypeDef)global.I2C_SystemStatus;
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150 }
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151
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152
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153 HAL_StatusTypeDef I2C_Master_Receive( uint16_t DevAddress, uint8_t *pData, uint16_t Size)
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154 {
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155 if(global.I2C_SystemStatus != HAL_OK)
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156 return (HAL_StatusTypeDef)global.I2C_SystemStatus;
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157
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158 uint8_t localHALstatusReturn = 0xFF;
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159
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160 global.dataSendToSlaveStopEval = 1;
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161
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162 localHALstatusReturn = HAL_I2C_Master_Receive(&I2cHandle, DevAddress, pData, Size, 100);
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163 if(localHALstatusReturn != HAL_OK)
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164 {
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165 I2C_Error_count();
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166 }
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167
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168 global.dataSendToSlaveStopEval = 0;
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169 if(global.dataSendToSlavePending)
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170 {
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171 scheduleSpecial_Evaluate_DataSendToSlave();
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172 }
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173 return (HAL_StatusTypeDef)localHALstatusReturn;
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174 }
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175
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