78 lines
1.7 KiB
C
78 lines
1.7 KiB
C
#include <ioCC2530.h>
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#define LED1 (P1_0) //D3
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#define LED2 (P1_1) //D4
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#define SW1 (P1_2) //开关SW1
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#define SW2 (P1_6) //SW2 存在问题
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#define LED3 (P1_3) //D5
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#define LED4 (P1_4) //D6
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unsigned char count = 0;
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//初始化端口
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void initial_gpio(){
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P1SEL &=~0X1F; //设置GPOD 0001 1111 0：通用 1：外设
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P1DIR |=0X1B; //设置0,1,3,4为输出， xxx1 1x11 0：为输入，1：为输出
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P1DIR &=~0X44; //设置2为输入 xxxx x0xx
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P1INP &=~0X44; //设置2为上/下拉状态 xxxx x0xx 0：为上/下拉 1：三态
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P2INP &=~0X40; //设置2为上拉状态 x0xx xxxx 0：上拉，1：下拉
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P1 = 0X1B; //点亮四个LED
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}
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//初始化中断
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void initial_interrupt(){
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EA = 1; //总中断
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IEN2 |=0X10; // 中断源P1端口
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P1IEN |=0X44; //0:中断禁止 1：中断使能
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PICTL |=0X06; //0:为上升沿，1：下降沿
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}
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#pragma vector = P1INT_VECTOR
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__interrupt void P1_ISR(void){
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if(P1IFG == 0X04){
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count++;
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switch(count){
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case 1:
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LED1 =1; //D3
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LED2 =1; //D4
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LED3 = 0; //D5
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LED4 = 0; //D6
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break;
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case 2:
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LED1 =1;
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LED2 =0;
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LED3 = 0;
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LED4 = 1;
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break;
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case 3:
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LED1 =0;
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LED2 =0;
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LED3 = 1;
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LED4 = 1;
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break;
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case 4:
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LED1 =0;
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LED2 =1;
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LED3 = 1;
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LED4 = 0;
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break;
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default:
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LED1=0;
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LED2=0;
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LED3=0;
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LED4=0;
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}
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}
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if(P1IFG == 0X40){
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count = 0;
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P1 = 0X1B;
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}
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P1IF = 0X00;
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P1IFG = 0X00;
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}
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void main(void){
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initial_gpio();
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initial_interrupt();
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while(1)
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{ ; }
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} |