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adc.c
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adc.c
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#include <stm32f4xx.h>
#include "stm32f4xx_adc.h"
#include "stm32f4xx_gpio.h"
#include "stm32f4xx_tim.h"
#include "adc.h"
ADC_InitTypeDef ADC_InitStructure;
ADC_CommonInitTypeDef ADC_CommonInitStruct;
void initSensors()
{
ADC_DeInit();
// Setup ADC_CommonInitType first
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
ADC_CommonInitStruct.ADC_Prescaler = ADC_Prescaler_Div8;
ADC_CommonInitStruct.ADC_Mode = ADC_Mode_Independent;
ADC_CommonInitStruct.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
ADC_CommonInitStruct.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;
ADC_CommonInit(&ADC_CommonInitStruct);
// Setup ADC_InitStruct
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ScanConvMode = DISABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = 1;
ADC_Init(ADC1, &ADC_InitStructure);
ADC_RegularChannelConfig(ADC1, ADC_Channel_10, 1, ADC_SampleTime_3Cycles);
ADC_Cmd(ADC1, ENABLE);
ADC_ResetCalibration(ADC1);
//Enable ADC1 reset calibration register
ADC_ResetCalibration(ADC1);
//Check the end of ADC1 reset calibration register
while(ADC_GetResetCalibrationStatus(ADC1));
//Start ADC1 calibration
ADC_StartCalibration(ADC1);
//Check the end of ADC1 calibration
while(ADC_GetCalibrationStatus(ADC1));
//Start ADC1 Software Conversion
ADC_SoftwareStartConvCmd(ADC1, ENABLE);
}
int getSensorValue()
{
int temp;
while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC)){}
temp = ADC_GetConversionValue(ADC1);
ADC_ClearFlag(ADC1, ADC_FLAG_EOC);
return temp;
}