main.c

《Proteus在MCS-51&ARM7系统中的应用百例》逆向之 Chapter 7 《Proteus在MCS-51&ARM7系统中的应用百例》MCS-51例子的C语言版本。

#include <reg51.h>
typedef unsigned char BYTE;

BYTE LED_0;
BYTE LED_1;
BYTE LED_2;
BYTE ADC;

BYTE code TABLE[]={	0x3F,0x06,0x5B,0x4F,0x66,
					0x6D,0x7D,0x07,0x7F,0x6F};

sbit P21=P2^1;
sbit P22=P2^2;
sbit P23=P2^3;

sbit OE =P3^0;
sbit EOC=P3^1;
sbit ST =P3^2;
sbit P33=P3^3;
sbit P34=P3^4;
sbit P35=P3^5;
sbit P36=P3^6;

void DELAY()
{
	BYTE i=10;
	 
	do
	{
		BYTE j=250;
		do
		{}while(--j);
	}while(--i);
}

void DISP()
{
	P23=0;
	P0=TABLE[LED_0];
	DELAY();
	P23=1;
		
	P22=0;
	P0=TABLE[LED_1];
	DELAY();
	P22=1;

	P21=0;
	P0=TABLE[LED_2];
	DELAY();
	P21=1;
}

main()
{
	LED_0=0x00;
	LED_1=0x00;
	LED_2=0x00;
	P34=1;
	P35=1;
	P36=0;

	while(1)
	{
		ST=0;
		ST=1;
		ST=0;
		while(!EOC);
		OE=1;
		ADC=P1;
		OE=0;
		LED_2=ADC/100;
	   	LED_1=(ADC%100)/10;
		LED_0=(ADC%100)%10;
		DISP();
	}	
}