x25045.c

病理冰冻切片机C51程序,KEIL C编译环境

#include "mqb.h"
#define SCK P24
#define SI  T0
#define SO  T1
#define CS25045  P25

void RstWatchDog(void)
{
	CS25045=0;CS25045=1;
}
void Write25045(BYTE ch)
{
	BYTE i=8;
	while (i--)
	{
		SCK=0;	
		SI=ch&0x80;
		SCK=1;
		ch=ch<<1;
	}
	SI=0;
}
BYTE Read25045(void)
{
	BYTE ch=0;
	BYTE i=0x80;
	while (i)
	{
		SCK=1;
		SO=1;
		SCK=0;
		if (SO) ch=ch|i;
		i=i>>1;	
	}
	return ch;
}
void WriteEn25045(void)
{
	SCK=0;
	CS25045=0;            /*选通25045*/
	Write25045(0x06);       /*0x06-允许写操作 0x04 Disable*/
        SCK=0;	
	CS25045=1;
}

BYTE RdSR25045(void)
{
	BYTE ch;
	SCK=0;
	CS25045=0;
   	Write25045(0x05); /*写状态寄存器*/
   	ch=Read25045(); 
   	SCK=0;
	CS25045=1;
	return ch;
}

void WaitWr25045()
{
	BYTE ch,i;
	for (i=0;i<100;i++)
	{
		ch=RdSR25045();
		if (ch&0x01==0) break;
	}
}

void WrSR25045(BYTE ch)
{
	SCK=0;
	CS25045=0;
   	Write25045(0x01); /*写状态寄存器*/
   	Write25045(ch);   /*0x0-watchdog=1.4s*/
   	SCK=0;
	CS25045=1;
	WaitWr25045();
}

void  WrLByte25045(BYTE addr,BYTE ch)
{
	SCK=0;     
	CS25045=0;
	Write25045(0x06);       /*0x06-允许写操作 0x04 Disable*/
	SCK=0;	
	CS25045=1;
	CS25045=0;
	Write25045(0x02);
	Write25045(addr);
	Write25045(ch);
	SCK=0;
	CS25045=1;
	WaitWr25045();
}
BYTE  RdLByte25045(BYTE addr)
{
	BYTE ch;
	SCK=0;
	CS25045=0;
	Write25045(0x03);
	Write25045(addr);
	ch=Read25045();
	SCK=0;
	CS25045=1;
	return ch;
}
void  WrHByte25045(BYTE addr,BYTE ch)
{
 	SCK=0;     
	CS25045=0;
	Write25045(0x06);       /*0x06-允许写操作 0x04 Disable*/
	SCK=0;	
	CS25045=1;
	CS25045=0;
	Write25045(0x0a);
	Write25045(addr);
	Write25045(ch);
	SCK=0;
	CS25045=1;
	WaitWr25045();
}
BYTE  RdHByte25045(BYTE addr)
{
	BYTE ch;
	SCK=0;
	CS25045=0;
	Write25045(0x0b);
	Write25045(addr);
	ch=Read25045();
	SCK=0;
	CS25045=1;
	return ch;
}