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)
	{
	}
}