key.c

病理冰冻切片机C51程序,KEIL C编译环境

#include "mqb.h"
#include "x25045.h"

extern BYTE Count;

bit  MyHitKB(void)
{
BYTE i;
	RstWatchDog();
	KEYSTR=0;
	KEYCLK=1;
	KEYSTR=1;

	for (i=1;i<9;i++)
	{
		KEYDATA=1;
		KEYCLK=0;
		if (KEYDATA) return TRUE;
		KEYCLK=1;

	}
	return FALSE;
}

BYTE MyGetKB(void)
{
BYTE i;
	if (!MyHitKB()) return 0;
	Delay10ms(10);
	if (!MyHitKB()) return 0;
	KEYSTR=0;
	KEYCLK=1;	
	KEYSTR=1;
	for (i=1;i<9;i++)
	{
		KEYDATA=1;
		KEYCLK=0;
		if (KEYDATA) return 9-i;
		KEYCLK=1;
	}
	return 0;
}