PIC RB0外部中断程序

#include

#include

//__CONFIG (CP_OFF&WDTE_OFF& BOREN_OFF&PWRTE_OFF &FOSC_HS&WRT_OFF&LVP_OFF&CPD_OFF);

__CONFIG (CP_OFF&WDTE_OFF&BOREN_ON&PWRTE_OFF&FOSC_HS&WRT_OFF&LVP_OFF&CPD_OFF);

//__CONFIG (CP_OFF&WDTE_OFF& BOREN_OFF&PWRTE_OFF &FOSC_HS&WRT_OFF&LVP_OFF&CPD_OFF);

//__CONFIG (CP_OFF&WDTE_ON& BOREN_OFF&PWRTE_ON&FOSC_HS&WRT_OFF&LVP_OFF&CPD_OFF);

/*配置位

CP_OFF,代码保护位,程序存储器代码保护关闭;

WDTE_OFF,看门狗定时器使能位,看门狗定时器关闭,可以通过WDTCON寄存器的SWDTEN位使能;

BOREN_OFF,掉电复位选择位,掉电复位关闭;

PWRTE_OFF,上电定时器使能位,上电定时器关闭;

FOSC_HS,振荡器选择位,高速晶振或谐振器在RA6/OSC2/CLKOUT和RA7/OSC1/CLKIN;

WRT_OFF,闪存程序存储器自写使能位,写保护关闭;

LVP_OFF,低电压编程使能位,RB3引脚有数字I/O,使用MCLK上的HV(高电压)来编程;

CPD_OFF,数据代码保护位,数据存储器代码保护关闭;

*/

//__CONFIG (0x2FF2);

#define uchar unsigned char

#define uint unsigned int

#define LEDA RB3//定义灯1

#define RET RB0//定义灯1

void delay(unsigned int n);

void interrupt ISR(void); 

uchar count;

main()

{

TRISB=0X01; 

//

PORTB=0x09; 

ANSEL=0x00;

ANSELH=0x00;

//

//

GIE = 1;

PEIE = 1;   //允许外设中断

RBIE = 1; 

//INTE = 1;

//IOCB = 0x01;   //B0电平变化中断；

WPUB = 0X01;

OPTION_REG=0x00;

INTEDG=0;//当INTEDG位（OPTION<6>）被清零时在下降沿触发

INTE = 0;

INTF=0;

INTE = 1;

INTF=0;

//INTCON=

//WPUB = 0X0F; 

//RBIF = 0;

//TRISB=0X01; 

//PORTB=0X00;//红

RB3=0;//红灯

//count=0;

//RBIF = 0;

while(1)

{

if((count%2)==0)

{RB3=0;}

else

{RB3=1;}

//RB3=0;//红灯

////RET=0;

//delay(1000);

////delay(1000);

//

//RB3=1;

////RET=1;

//delay(1000);

////delay(1000);

}

}

//延时(n)ms

void delay(unsigned int n)

{

unsigned int j;

unsigned int k;

for(j=0;j

for(k=264;k>0;k--)

NOP();

}

void interrupt ISR(void)

{

 if(INTF==1)   //电平变化中断

{

//  PortB0Intrupt = PortB0Intrupt+ 1;

//  PORTB = PORTB;

//  RD0 = ~RD0;

//  SendToPrin(&PortB0Intrupt,2);

RB3=1;//黄

count++;

INTF=0;

//  RBIF = 0;

}

}