STM32入门学习之ADC（STM32F030F4P6基于CooCox IDE）

#include "stm32_lib/inc/stm32f0xx_rcc.h"

#include "stm32_lib/inc/stm32f0xx_adc.h"

#include "stm32_lib/inc/stm32f0xx_gpio.h"

int main(void)

{

//时钟配置

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);

RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1,ENABLE);

//ADC IO配置，此处定义PA0口为ADC端口

GPIO_InitTypeDef PORT_ADC;

PORT_ADC.GPIO_Pin=GPIO_Pin_0;

PORT_ADC.GPIO_Mode=GPIO_Mode_AN;

PORT_ADC.GPIO_PuPd=GPIO_PuPd_NOPULL;

GPIO_Init(GPIOA,&PORT_ADC);

//ADC 参数配置

ADC_InitTypeDef ADC_InitStuctrue;

ADC_InitStuctrue.ADC_Resolution=ADC_Resolution_12b;//12位精度

ADC_InitStuctrue.ADC_ContinuousConvMode=DISABLE;//单次ADC

ADC_InitStuctrue.ADC_ExternalTrigConvEdge=ADC_ExternalTrigConvEdge_None;

ADC_InitStuctrue.ADC_DataAlign=ADC_DataAlign_Right;//数据右对齐

ADC_InitStuctrue.ADC_ScanDirection=ADC_ScanDirection_Backward;//数据覆盖

ADC_Init(ADC1,&ADC_InitStuctrue);

//配置ADC采样的通道和采样周期

//PA0对应ADC通道0

//注意，采集的数据是否准确与采样时间有关系

ADC_ChannelConfig(ADC1,ADC_Channel_0,ADC_SampleTime_239_5Cycles);

//如果采集系统内部温度，则通道为16，同时要使能温度传感器

//ADC_ChannelConfig(ADC1,ADC_Channel_16,ADC_SampleTime_239_5Cycles);

//ADC_TempSensorCmd(ENABLE);

//校准

ADC_GetCalibrationFactor(ADC1);

//使能

ADC_Cmd(ADC1,ENABLE);

//等待ADC准备

while(ADC_GetFlagStatus(ADC1,ADC_FLAG_ADEN)==RESET);

//软件启动ADC转换

ADC_StartOfConversion(ADC1);

//等待ADC完成

while(ADC_GetFlagStatus(ADC1,ADC_FLAG_EOC)==RESET);

//所得数据即为ADC数据

unsigned short adc_data=ADC_GetConversionValue(ADC1);

/*

//如果采集的是16通道，即芯片温度，则温度的值如下

//下面这段代价，参考STM32F030数据手册（寄存器版）A.7.16

//出厂校准数据所存储的地址，30°C和110°C的ADC值

#define TEMP110_CAL_ADDR ((uint16_t*) ((uint32_t) 0x1FFFF7C2))

#define TEMP30_CAL_ADDR ((uint16_t*) ((uint32_t) 0x1FFFF7B8))

#define VDD_CALIB ((uint16_t) (330))

#define VDD_APPLI ((uint16_t) (300))

int32_t temperature;

temperature = (((int32_t) ADC1->DR * VDD_APPLI / VDD_CALIB)- (int32_t) *TEMP30_CAL_ADDR );

temperature = temperature * (int32_t)(110 - 30);

temperature = temperature / (int32_t)(*TEMP110_CAL_ADDR- *TEMP30_CAL_ADDR);

temperature = temperature + 30;

*/

while(1)

{

}

}