zlg7289.c

ARM键盘及LED显示用汇编实现

#include "44b.h"
#include"uhal.h"
#include "zlg7289.h"
void SendSIOData(unsigned char );


int Zlg7289SIOBand;
int Zlg7289SIOCtrl;

void Zlg7289_Reset()
{
	ZLG7289_ENABLE();
	WriteSDIO(ZLG7289_CMD_RST);			//向zlg7289发送复位命令
	ZLG7289_DISABLE();
	Delay(20);
}

unsigned int Zlg7289_ReadKey()
{
	unsigned int key;

	ZLG7289_ENABLE();

	WriteSDIO(ZLG7289_CMD_RDKEY);		//向zlg7289发送读键盘数据指令
	key=ReadSDIO();						//从SIODATA中取出zlg7289送出的按键值
	
	ZLG7289_DISABLE();

	return key;
}