#include "CH552.h"
#include "GPIO.h"
sbit LED1=P1^3;
sbit LED2=P3^4;
sbit KEY1=P1^5;
sbit KEY2=P1^6;
unsigned int k;
void KEY()
{
if(KEY1==0)
{
k++;
if(k>3)
k=0;
}
}
void delay(unsigned int a)
{
unsigned int i,j,k;
for(i=0;i<a;i++)
for(j=0;j<200;j++)
for(k=0;k<200;k++)
;
}
void main(void)
{
P1_OUT(PIN3+PIN5+PIN6); //控制 LEDs 亮
P3_OUT(PIN4); //按键 KEYs
k=0;
while(1)
{
switch(k)
{
case 0:
{
LED1=1;
LED2=1;
}break;
case 1:
{
LED1=0;
LED2=1;
}break;
case 2:
{
LED1=1;
LED2=0;
}break;
case 3:
{
LED1=0;
LED2=0;
}break;
}
}
}
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