初學單片機,求大神指導
#include<reg51.h>
#include"lcd.h"
#define GPIO_KEY P1
unsigned char KeyValue;
unsigned char KeyState;
unsigned char dat[]="0123456789ABCDEF";
unsigned char a[6]={0,0,0,0,0,0};
void Delay10ms();
void KeyDown();
//主函數
void main(void)
{
unsigned char i;
LcdInit();
KeyState=0;
while(1)
{
KeyDown();
if(KeyState)
{
KeyState=0;
for(i=0;i<6;i++)
{
a[i+1]=a[ i];
}
a[0]=KeyValue;
LcdWriteCom(0x80+0x40);
LcdWriteData(KeyValue+0x30);
}
}
}
//結果是按鍵按下，屏幕沒反應，求大神
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