1.实现功能
按键KEY1按下LED1依次亮灭
按键KEY2按下LED2依次亮灭
2.元件连接方式
P1_0连接LED1
P1_1连接LED2
P0_0连接KEY1
P0_1连接KEY2
3.部分代码分析
按键需要消抖（因为按键选择之后的代码较少，直接写这里面啦）
void keyScan()
{
if(KEY1 == 0)
{
delayms(10);
if(KEY1 == 0)
{
while(!KEY1);
LED1 = !LED1;
}
}
if(KEY2 == 0)
{
delayms(10);
if(KEY2 == 0)
{
while(!KEY2);
LED2 = !LED2;
}
}
}
4.完整代码
#include <ioCC2530.h> #define uchar unsigned char #define uint unsigned int #define LED1 P1_0 #define LED2 P1_1 #define KEY1 P0_0 #define KEY2 P0_1 void ledInit(); void keyInit(); void keyScan(); void delayms(uint ms); void ledInit() { P1SEL &= ~0x03; P1DIR |= 0x03; P1INP &= ~0x03; LED1 = 0; LED2 = 0; } void keyInit() { P0SEL &= ~0x03; P0DIR &= ~0x03; P0INP &= ~0x03; } void keyScan() { if(KEY1 == 0) { delayms(10); if(KEY1 == 0) { while(!KEY1); LED1 = !LED1; } } if(KEY2 == 0) { delayms(10); if(KEY2 == 0) { while(!KEY2); LED2 = !LED2; } } } void delayms(uint ms) { uint i, j; for(i=ms; i>0; i--) for(j=578; j>0; j--); } void main() { ledInit(); keyInit(); while(1) { keyScan(); } }
转载于:https://www.cnblogs.com/Donut/p/4123157.html
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