STM32F0xx的ADC配置

STM32F0xx系列单片机基于ST官方标准库V1.5.0的ADC功能的配置

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ADC.c文件

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#include "ADC.h"

uint32_t  ADC1ConvertedValue = 0, ADC1ConvertedVoltage = 0;

void ADC_GPIO_Configuration(void)
{
    
    
	GPIO_InitTypeDef  GPIO_InitStructure;
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
	
	//端口配置
//	GPIO_StructInit(&GPIO_InitStructure);
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
//	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;		//50M时钟速度
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
	GPIO_Init(GPIOA, &GPIO_InitStructure);
}

void ADC_Configuration(void)
{
    
    
	ADC_InitTypeDef ADC_InitStructure;
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
	
	ADC_DeInit(ADC1);
	ADC_StructInit(&ADC_InitStructure);
	
	ADC_InitStructure.ADC_Resolution  = ADC_Resolution_12b;
	ADC_InitStructure.ADC_ContinuousConvMode  = ENABLE;
	ADC_InitStructure.ADC_ExternalTrigConvEdge  = ADC_ExternalTrigConvEdge_None;
	ADC_InitStructure.ADC_DataAlign  = ADC_DataAlign_Right;
//	ADC_InitStructure.ADC_ScanDirection  = ADC_ScanDirection_Backward;
	ADC_InitStructure.ADC_ScanDirection = ADC_ScanDirection_Upward;	//向上扫描
	ADC_Init(ADC1, &ADC_InitStructure);
	
	ADC_ChannelConfig(ADC1, ADC_Channel_1, ADC_SampleTime_239_5Cycles);
  
	ADC_GetCalibrationFactor(ADC1);

	ADC_Cmd(ADC1, ENABLE);

	while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_ADRDY));
	
//	ADC_ClearFlag(ADC1, ADC_FLAG_EOC);
	//开始校准状态
	ADC_StartOfConversion(ADC1);
}

uint32_t ADC_Read(void)
{
    
    
    /* Test EOC flag */
    while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == RESET);
    
    /* Get ADC1 converted data */
    ADC1ConvertedValue = ADC_GetConversionValue(ADC1);
    
    /* Compute the voltage */
    ADC1ConvertedVoltage = (ADC1ConvertedValue * 3300)/0xFFF;
	  
	return ADC1ConvertedVoltage;
}

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ADC.h文件

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#ifndef __ADC_H
#define __ADC_H
#include "stm32f0xx.h"
#include "stm32f0xx_adc.h"

//extern uint16_t  ADC1ConvertedValue , ADC1ConvertedVoltage ;
//硬件初始化
void ADC_GPIO_Configuration(void);						//AD相关初始化
void ADC_Configuration(void);
uint32_t ADC_Read(void);
#endif

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main.c文件

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#include "main.h"
#include "stm32f0xx_it.h"
#include "USART.h"
#include "ADC.h"

uint32_t ADC_value;

int main(void)
{
    
    
	ADC_GPIO_Configuration();
	ADC_Configuration();
  while (1)
  {
    
    
    ADC_value = ADC_Read();
    USART_printf( USART2, "\r\n %d \r\n", ADC_value );
  }
}