1:首先在項(xiàng)目中引入STM8 中ADC 的庫(kù)文件#include "stm8s_adc1.h"
2:將ADC 對(duì)應(yīng)AD_channel0的的采集管角配置成上拉輸入狀態(tài)。
#define AD_channel0 (GPIO_PIN_0)
GPIO_Init( GPIOB,AD_channel0,GPIO_MODE_IN_PU_NO_IT );//GPIO的0管腳對(duì)應(yīng)ADC采集的0通道,不同的STM8 的ADC采集通道對(duì)應(yīng)的管教號(hào)可能不一樣,以數(shù)據(jù)手冊(cè)為準(zhǔn)。
3:初始化ADC(在這里我們對(duì)ADC1_CHANNEL_0通道進(jìn)行初始化),在進(jìn)入主函數(shù)前調(diào)用此函數(shù)
void ADC_Init(void)
{
ADC1_DeInit();
ADC1_Init(ADC1_CONVERSIONMODE_CONTINUOUS, ADC1_CHANNEL_0, ADC1_PRESSEL_FCPU_D18,\
ADC1_EXTTRIG_TIM, DISABLE, ADC1_ALIGN_RIGHT, ADC1_SCHMITTTRIG_CHANNEL0,DISABLE);
ADC1_ITConfig( ADC1_IT_AWS0,ENABLE);
ADC1_Cmd(ENABLE);
ADC1_StartConversion();
}
4:獲取ADC 采集的值
int AD1_number;
AD1_number=ADC1_GetConversionValue();