怎样把单片机中的I/O口定义为结构体，例如P1口
#define uchar unsigned char
typedef struct Key
{
uchar P1;
uchar scanf;
}KEY;
为什么我编译的时候出现错误了
------解决方案--------------------
- C/C++ code
extern volatile near unsigned char PORTA;extern volatile near union { struct { unsigned RA0:1; unsigned RA1:1; unsigned RA2:1; unsigned RA3:1; unsigned RA4:1; unsigned RA5:1; unsigned RA6:1; unsigned RA7:1; }; struct { unsigned AN0:1; unsigned AN1:1; unsigned AN2:1; unsigned AN3:1; unsigned T0CKI:1; unsigned AN4:1; unsigned OSC2:1; unsigned OSC1:1; }; struct { unsigned CVREF:1; unsigned :1; unsigned VREFM:1; unsigned VREFP:1; unsigned :1; unsigned HLVDIN:1; unsigned CLKO:1; unsigned CLKI:1; }; struct { unsigned CVREFA:1; unsigned :4; unsigned LVDIN:1; }; struct { unsigned :5; unsigned SS:1; }; struct { unsigned :5; unsigned NOT_SS:1; };} PORTAbits;