PIC RB0外部中断程序

2019-04-15 11:56发布

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#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;j0;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; } }

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