2021年09月09日 | 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

ADC.c文件

#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;

}

ADC.h文件

#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

main.c文件

#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, "rn %d rn", ADC_value );

  }

}