main.c

ADC0804+DAC0832+MAX7219仿真演示

#include <reg51.h>
#include <absacc.h>
#include "max7219.h" 

#define ADC XBYTE[0xbfff] //P2.6接CS
#define DAC XBYTE[0x7fff] //P2.7接CS

sbit ADCfinish = P3^2;
//sbit KEY0 = P3^2;
sbit KEY1 = P3^3;
sbit KEY2 = P3^4;
sbit KEY3 = P3^5;

void main()
{
	unsigned char tmp,davl; 
	delay_ms(500);//延时让电源稳定
  	InitAllComponents();
	disp7219(88888888);
  	delay_ms(500);//延时让电源稳定
	
	davl=100;
	while(1) 
	{
		DAC=davl;
		if(!KEY2) {		
			davl++;
			while(!KEY2);		
		}

		if(!KEY3) {		
			davl--;
			while(!KEY3);		
		}


		ADC=0xff;//启动ADC
		while(ADCfinish);		
		tmp=ADC;
		disp7219(tmp);
	}  
}