[原创]ADC0808 典型电路和c原程序

#include <at89x51.h> #include <absacc.h> #define unit unsigned int #define uchar unsigned char #define AD XBYTE[0X7FF8] sbit led1=P2^0; sbit led2=P2^1; sbit led3=P2^2; sbit led4=P2^3; sbit ad_busy=P3^2; bit bk=1; unsigned char ad_data,LED1,LED2,LED3; unsigned char idata led_data[3]; uchar code led_segment[12]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x0,0x0}; void delay(unsigned int i) { while(i)i--; } void display(void) { LED1=ad_data%10; LED2=(ad_data/10)%10; //LED2=ad_data/10; LED3=ad_data/100; P2=0xff; delay(2); P1=led_segment[LED1]; led1=0; delay(100); led1=1; if((LED3==0)&&(LED2==0))LED2=10; P1=led_segment[LED2]; led2=0; delay(100); led2=1; if(LED3==0)LED3=10; P1=led_segment[LED3]; led3=0; delay(100); led3=1; bk=!bk; } void ad0808(void) interrupt 0 { EA=0; EX0=0; ad_data=AD; EA=1; EX0=1; } void main(void) { EA=1; EX0=1; //IT0=1; ad_data=0; ad_busy=0; while(1) { if(bk)AD=0; display(); } }