sdio.h

ARM7下用图形用户界面实现LED,KEY,MOTOR,AD功能

#include "hardware.h"
#define SDIO_CTRLIO      0X4  //PF2
#define SDIOOUT()  (PDATF&=(~SDIO_CTRLIO));
#define SDIOIN()   (PDATF|=SDIO_CTRLIO);



void sendsiodata(unsigned char data)
{
	I_ISPC=0x10;
	SIODAT=data;
	SIOCON|=(0x1<<3);
	while(!(INTPND&0x10));
	I_ISPC=0x10;
}

unsigned char readsiodata()
{
	SDIOIN();
	sendsiodata(0);
	SDIOOUT();
	return SIODAT;
}