CC2430基础——按键外部中断实验
#include <iocc2430.h> void init_led() //初始化三个LED,开始时熄灭 { //P1_0 接RLED P1_1 接GLED P1_2接YLED P1SEL &= 0x07; //P1_0，P1_1，P1_2通用IO P1DIR |= 0x07; //作输出，1--输出，0--输入 P1_0 = 1; P1_1 = 1; P1_2 = 1; //全熄灭 } //P0_6按下为低电平 void init_key_interrupt() //出事话P0_6按键中断，下降沿中断 { P0SEL &= 0x40; //通用IO P0DIR &= 0x40; //作输入 P0INP &= ~0x40; //上拉 1--下拉，0--上拉 P0IFG = 0; //清中断标志 PICTL |= 0x11; //上升沿触发，开P0_4,--P0_7中断 P0IE = 1; //开P0中断 EA = 1; //开总中断 } #pragma vector = P0INT_VECTOR __interrupt void P0_ISR() { if(P0IFG & 0x40) P1_0 = !P1_0; P0IFG = 0; P0IF = 0; } void main() { init_led(); init_key_interrupt(); while(1); }