main.c

来自「《Proteus在MCS-51&ARM7系统中的应用百例》逆向之 Chapter」· C语言 代码 · 共 51 行

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

BYTE ADC;

sbit CLOCK=P2^4;
sbit ST   =P2^5;
sbit EOC  =P2^6;
sbit OE   =P2^7;
sbit PWM  =P3^7;

void INT_T0()	interrupt 1
{
	CLOCK=~CLOCK;
}

void DELAY(BYTE in)
{
	BYTE i=1;
   	
	do
	{
		do
		{}while(--i);
	}while(--in);
}


main()
{
	TMOD=0x02;
	TH0=20;
	TL0=0x00;
	IE=0x82;
	TR0=1;
	 
	while(1)
	{
		ST=0;
		ST=1;
		ST=0;
		while(!EOC);
		OE=1;
	   	ADC=P1;
		OE=0;
		PWM=1;
		DELAY(ADC);
		PWM=0;
		DELAY(255-ADC);
	} 	
}