#include"STC12C5410AD.h"#define uchar unsigned charunsigned char  aa,bb;void delay(uchar dd){int x,y;for(x=dd;x>0;x--)for(y=100;y>0;y--);}unsigned char Read_ADC(unsigned char adcvcc){//將P1.0--P1.1設置成適合AD轉換的模式ADC_CONTR = ADC_CONTR|0x80; //1000,0000打開A/D轉換電源delay(20); //20msADC_CONTR = ADC_CONTR0xE0; //1110,0000 清ADC_FLAG,ADC_START位和低3位ADC_CONTR = ADC_CONTR0xf8|adcvcc; //設置當前通道號delay(10); //延時使輸入電壓達到穩定ADC_DATA = 0; //清A/D轉換結果寄存器ADC_CONTR = ADC_CONTR|0x08; //0000，1000ADCS ＝ 1，啟動轉換do { ; } while((ADC_CONTR  0x10)==0); //0001,0000等待A/D轉換結束ADC_CONTR = ADC_CONTR0xE7; //1110,0111清ADC_FLAG和ADC_START位，停止A/D轉換return ADC_DATA;}void main(){//里要加上設置ADC的端口,如)1.0,P1.1設為ADC口的話:P1M0 = 0x03; //0000，0011用于A/D轉換的P1.x口，先設為開漏P1M1 = 0xC3; //0000，0011P1.0--P1.1先設為開漏。斷開內部上拉電阻bb=0x01;while(1){aa=Read_ADC(1); //第一路A/D轉換;如要改別的路,只要把代入通道改一下.P3=aa;  //這是讓A/D的數據顯示在P3口的LED上.}}