#include "reg52.h"
typedef unsigned int u16;
typedef unsigned char u8;
sbit LSA=P2^2;
sbit LSB=P2^3;
sbit LSC=P2^4;
#define GPIO_DIG P0
#define GPIO_KEY P1
u8 KeyValue;
u8 code smgduan[17]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,
0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e};
void delay(u16 i)
{
while(i--);
}
void KeyDown(void)
{
char a=0;
GPIO_KEY=0x0f;
if(GPIO_KEY!=0x0f)
{
delay(1000);
if(GPIO_KEY!=0x0f)/
{
GPIO_KEY=0X0F;
switch(GPIO_KEY)
{
case(0X07): KeyValue=0;break;
case(0X0b): KeyValue=1;break;
case(0X0d): KeyValue=2;break;
case(0X0e): KeyValue=3;break;
}
GPIO_KEY=0XF0;
switch(GPIO_KEY)
{
case(0X70): KeyValue=KeyValue;break;
case(0Xb0): KeyValue=KeyValue+4;break;
case(0Xd0): KeyValue=KeyValue+8;break;
case(0Xe0): KeyValue=KeyValue+12;break;
}
}
}
while((a<50)&&(GPIO_KEY!=0xf0))
{
delay(100);
a++;
}
}
void main()
{
LSA=0;
LSB=1;
LSC=1;
while(1)
{
KeyDown();
GPIO_DIG=~smgduan[KeyValue];
}
}
這是源程序 運行顯示/旁有錯誤應該為__asm 我就加了 也夠了兩個lrc 還是錯誤 |
