key.c

cc1100&atmega8

#include "includes.h"

volatile unsigned char Channel[3]={0,1,2};
volatile  unsigned char pChannel=0;
volatile unsigned char dbm=0;
volatile unsigned char Keydbm=0;
volatile unsigned char KeyChannel=0;


void KEY_INIT(void)
{
	//DDRD&=~(_BV(P2)|_BV(P3));
	//开启中断
	//MCUCR|=_BV(ISC11)|_BV(ISC01);
	//GICR|=_BV(INT0)|_BV(INT1);
	SET_IN_KEY1;
	SET_IN_KEY2;
	MCUCR|=_BV(ISC01);//KEY2下降沿触发
	GICR|=_BV(INT0);
}


ISR(INT0_vect)  //系统开关
{
	//关闭中断
	GICR&=~_BV(INT0);
	if(KeyChannel!=1)
	{
		delay_nms(20);
		//扫描电平
		if(!(PIND&_BV(P2)))
		{
			KeyChannel=1;
		}
	}
	GICR|=_BV(INT0);
}


/*ISR(INT1_vect)  //靠近CC1100那个开关  系统复位
{
	INT8U i;
	//关闭中断
	GICR&=~_BV(INT1);
	if(Keydbm!=1)
	{
		delay_nms(20);
		//扫描电平
		if(!(PIND&_BV(P3)))
		{
			if(dbm<8)
			{
				dbm++;

			}
			else
			{
				dbm=0;
			}
				
			for(i=0;i<8;i++)
			{
				default_PaTabel[i]=patable[dbm];
			}
			Keydbm=1;
		}
	}
	GICR|=_BV(INT1);
}
*/