main.c

#include "STC8.h"
#include "intrins.h"

sbit PWRSW1 = P5^4;
sbit PWRSW2 = P3^3;
sbit PWRDET = P5^5;
sbit PWRBTN = P3^2;

void Delay100ms()		//@11.0592MHz
{
	unsigned char i, j, k;

	_nop_();
	i = 6;
	j = 157;
	k = 59;
	do
	{
		do
		{
			while (--k);
		} while (--j);
	} while (--i);
}


void GPIO_Init(void)
{
	P3M0 = 0xFF;
	P3M1 = 0xFF;
	P5M0 = 0xFF;
	P5M1 = 0xFF; //all IO open drain
}

void main(void)
{
	bit SW_Status;
	
	GPIO_Init();
	if((PWRSW1 == 1) & (PWRSW2 == 0)) SW_Status = 0;
	if((PWRSW1 == 0) & (PWRSW2 == 1)) SW_Status = 1;
	
	while(1)
	{
		if(PWRBTN == 1)
		{
			if(SW_Status)
			{
				PWRSW2 = 0;
				Delay100ms();
				PWRSW2 = 1;
			}
			else
			{
				PWRSW1 = 0;
				Delay100ms();
				PWRSW1 = 1;
			}
		}
	}
}