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38
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1 /**
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2 ******************************************************************************
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3 * @file adc.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 11-Dec-2014
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7 * @brief ADC for ambient light sensor
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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>© COPYRIGHT(c) 2014 heinrichs weikamp</center></h2>
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18 *
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19 ******************************************************************************
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20 */
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21
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22 /* Includes ------------------------------------------------------------------*/
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23
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24 #include "stm32f4xx_hal.h"
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25 #include "adc.h"
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26
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27 /* Exported variables --------------------------------------------------------*/
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28 /* Private variables ---------------------------------------------------------*/
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29 ADC_HandleTypeDef AdcHandle;
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30 __IO uint16_t uhADCxConvertedValue = 0;
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31
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32 /* Private types -------------------------------------------------------------*/
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33 #define ADCx ADC1
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34 #define ADCx_CLK_ENABLE() __ADC1_CLK_ENABLE();
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35 #define ADCx_CHANNEL_GPIO_CLK_ENABLE() __GPIOF_CLK_ENABLE()
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36
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37 #define ADCx_FORCE_RESET() __ADC_FORCE_RESET()
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38 #define ADCx_RELEASE_RESET() __ADC_RELEASE_RESET()
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39
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40 /* Definition for ADCx Channel Pin */
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41 #define ADCx_GPIO_PIN GPIO_PIN_0
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42 #define ADCx_GPIO_PORT GPIOB
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43 #define ADCx_GPIO_CLK_ENABLE() __GPIOB_CLK_ENABLE()
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44 #define ADCx_GPIO_CLK_DISABLE() __GPIOB_CLK_DISABLE()
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45
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46 /* Definition for ADCx's Channel */
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47 #define ADCx_CHANNEL ADC_CHANNEL_8
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48
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49 /* Definition for ADCx's NVIC */
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50 //#define ADCx_IRQn ADC_IRQn
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51
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52 /* Private function prototypes -----------------------------------------------*/
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53 void ADC_Start_single_IT_Conversion(void);
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54
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55 /* Exported functions --------------------------------------------------------*/
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56
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57 uint16_t get_ambient_light_level(void)
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58 {
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59 #ifdef OSTC_ON_DISCOVERY_HARDWARE
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60 return 800;
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61 #endif
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62
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63 return uhADCxConvertedValue;
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64 }
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65
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66
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67 static void ADCx_MspInit(ADC_HandleTypeDef *hadc)
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68 {
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69 #ifdef OSTC_ON_DISCOVERY_HARDWARE
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70 return;
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71 #endif
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72
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73 GPIO_InitTypeDef GPIO_InitStruct;
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74
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75 ADCx_GPIO_CLK_ENABLE();
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76
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77 GPIO_InitStruct.Pin = ADCx_GPIO_PIN ;
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78 GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
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79 GPIO_InitStruct.Pull = GPIO_NOPULL;
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80 HAL_GPIO_Init(ADCx_GPIO_PORT, &GPIO_InitStruct);
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81
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82 ADCx_CLK_ENABLE();
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83
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84 // HAL_NVIC_SetPriority(ADCx_IRQn, 2, 0);
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85 // HAL_NVIC_EnableIRQ(ADCx_IRQn);
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86 }
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87
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88
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89 void ADCx_DeInit(void)
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90 {
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91 // HAL_ADC_Stop_IT(&AdcHandle);
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92 HAL_ADC_DeInit(&AdcHandle);
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93 }
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94
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95
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96 void ADCx_Init(void)
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97 {
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98 #ifdef OSTC_ON_DISCOVERY_HARDWARE
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99 return;
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100 #endif
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101
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102 ADC_ChannelConfTypeDef sConfig;
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103
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104 AdcHandle.Instance = ADCx;
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105
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106 AdcHandle.Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV4;
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107 AdcHandle.Init.Resolution = ADC_RESOLUTION12b;
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108 AdcHandle.Init.DataAlign = ADC_DATAALIGN_RIGHT;
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109 AdcHandle.Init.ContinuousConvMode = DISABLE;
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110 AdcHandle.Init.DiscontinuousConvMode = DISABLE;
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111 AdcHandle.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
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112 AdcHandle.Init.EOCSelection = EOC_SINGLE_CONV;
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113 AdcHandle.Init.NbrOfConversion = 1;
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114 AdcHandle.Init.DMAContinuousRequests = DISABLE;
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115
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116 ADCx_MspInit(&AdcHandle);
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117 HAL_ADC_Init(&AdcHandle);
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118
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119 sConfig.Channel = ADCx_CHANNEL;
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120 sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES;
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121 sConfig.Rank = 1;
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122 sConfig.Offset = 0;
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123
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124 HAL_ADC_ConfigChannel(&AdcHandle, &sConfig);
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125
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126 // ADC_Start_single_IT_Conversion();
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127 }
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128
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129
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130 uint32_t adc_debug_status = 0;
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131
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132 void adc_ambient_light_sensor_get_data(void)
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133 {
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134 #ifdef OSTC_ON_DISCOVERY_HARDWARE
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135 return;
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136 #endif
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137
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138 HAL_ADC_Start(&AdcHandle);
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139 HAL_ADC_PollForConversion(&AdcHandle, 10);
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140 adc_debug_status = HAL_ADC_GetState(&AdcHandle);
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141 if(adc_debug_status == HAL_ADC_STATE_EOC_REG + HAL_ADC_STATE_READY) // new HAL_ADC_STATE_READY 160613
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142 // if(HAL_ADC_GetState(&AdcHandle) == HAL_ADC_STATE_EOC_REG)
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143 uhADCxConvertedValue = HAL_ADC_GetValue(&AdcHandle);
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144 HAL_ADC_Stop(&AdcHandle);
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145 }
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146
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147
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148 /* Private functions ---------------------------------------------------------*/
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149 /*
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150 void ADC_Start_single_IT_Conversion(void)
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151 {
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152 HAL_ADC_Start_IT(&AdcHandle);
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153 }
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154
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155
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156 void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* AdcHandle)
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157 {
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158 extern void copyAmbientLightData(void);
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159
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160 uhADCxConvertedValue = HAL_ADC_GetValue(AdcHandle);
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161 copyAmbientLightData();
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162 ADC_Start_single_IT_Conversion();
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163 }
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164 */
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165
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166 /************************ (C) COPYRIGHT heinrichs weikamp *****END OF FILE****/
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