?? 4-4鍵盤-2.txt
字號(hào):
uchar code scancode[4]={0xfe,0xfd,0xfb,0xf7}; //鍵盤掃描碼
///鍵盤掃描程序////
keyscan()
{ int i;
uchar h,n,m;
for(i=0;i<4;i++)
{ P1=scancode[i];
if((P1&0xf0)!=0xf0)
{ delay1ms(10);
if((P1&0xf0)!=0xf0)
{ h=P1&0xf0;
n=scancode[i]&0x0f;
m=n|h;
return(m);
}
}
}
return(0);
}
//////////////////////
p=keyscan();
switch(p)
{
case 0x77:
{
break;
}
case 0x7b:
{
break;
}
case 0x7d:
{
break;
}
case 0x7e:
{
break;
}
case 0xb7:
{
break;
}
case 0xbb:
{
break;
}
case 0xbd:
{
break;
}
case 0xbe:
{
break;
}
case 0xd7:
{
break;
}
case 0xdb:
{
break;
}
case 0xdd:
{
break;
}
case 0xde:
{
break;
}
case 0xe7:
{
break;
}
case 0xeb:
{
break;
}
case 0xed:
{
break;
}
case 0xee:
{
break;
}
default:{break;}
}
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