5045.c

单片机程序,和上位机通讯,采集下位机的射频信号的功率,接收上位机的指令并向上位机回送采集到的下位机的信息,我花了一个月才开发出来的.绝对真实,可靠性强.

//EEPROM X5045相关函数定义
#include "fDETDeclare.H"
#include "DETConst.H"

///////////////////////////////////////////////////
// put one byte to EPSI
///////////////////////////////////////////////////
void EpmPutByte(byte srcbyte)
{
	byte i;
	for (i=1; i<=8; i++)  {
		EPSCK = 0;
	//	for (j=0;j<EPCLKWAITING;j++);
		EPSI = 0x80&srcbyte?1:0;
		EPSCK = 1;
		srcbyte <<= 1;
	}
}

///////////////////////////////////////////////////
// get one byte from EPSO
///////////////////////////////////////////////////
byte EpmGetByte()
{
	byte i,j,destbyte;
	for (j=0;j<EPCLKWAITING;j++) ;
	for (i=1; i<=8; i++)  {
		destbyte <<= 1;
		EPSCK = 0;
	//	for (j=0;j<EPCLKWAITING;j++);
		EPSCK = 1;
		destbyte = EPSO?0x01|destbyte:destbyte;
	}
	return destbyte;
}
///////////////////////////////////////////////////

///////////////////////////////////////////////////
// write enable or disable
// enordis is 0xff,then enable,
// or else is 0x00,then disable
///////////////////////////////////////////////////
void EpmWren_di(byte enordis)
{
	byte Com;
	switch (enordis) {
		case 0xff :          // enable, entry para:0xff
			Com = 0x06;
			break;
		case 0x00 :
			Com = 0x04;       // disnable, entr para:0x00
			break;
	}
	EPCS =0;
	EpmPutByte(Com);
	EPCS = 1;
}
///////////////////////////////////////////////////

///////////////////////////////////////////////////
// read state register
///////////////////////////////////////////////////
byte EpmRdsr()
{
	byte Com,getbyte;
	EPSO = 1;
	EPSCK = 0;
	EPCS =0;
	Com = 0x05;
	EpmPutByte(Com);
	getbyte = EpmGetByte();
	EPCS =1;
	return getbyte;
}
///////////////////////////////////////////////////

///////////////////////////////////////////////////
// write state register
///////////////////////////////////////////////////
void EpmWrsr(byte srcbyte)
{
	byte Com;
	EpmWren_di(0xff);
	EPCS =0;
	Com =0x01;
	EpmPutByte(Com);
	EpmPutByte(srcbyte);
	EPCS =1;
	EpmWren_di(0x00);
}
///////////////////////////////////////////////////

///////////////////////////////////////////////////
// Write alarm data
// Be careful when using this function
// epaddr is between 0 and 511
///////////////////////////////////////////////////
void fEepromWrite(byte *srcdata,word epaddr,byte sum)
{
	byte i,j,WriteCom;
	byte epmstate,addr;
	sum = epaddr+sum>512?512-epaddr:sum;	// avoid wirte beyond the boundary
	for (j=1; j<=sum; j++) {
		epmstate = 0x01;
		for (i=1;i<=10;i++);
		#ifndef DBG_EPM
		while (epmstate == 1)  {
			epmstate = EpmRdsr();
			epmstate &= 0x01;
		}
		#endif
		EpmWren_di(0xff);          // write enable
		EPSCK = 0;
		EPCS =0;
		WriteCom = epaddr>0x0ff?0x0a:0x02;   //决定写5045上半部分还是下半部分
		addr = (unsigned char)(epaddr&0xff);
		for (i=1;i<= 2;i++);
		EpmPutByte(WriteCom);
		for (i=1;i<=2;i++);
		EpmPutByte(addr);
		EpmPutByte(*srcdata++);
		epaddr++;
		EPCS =1;
		EpmWren_di(0x00);          // write disable
		epmstate = 0x01;
		#ifndef DBG_EPM
		while (epmstate == 1)  {
			epmstate = EpmRdsr();
			epmstate &= 0x01;
		}
		#endif
	}
}
///////////////////////////////////////////////

///////////////////////////////////////////////
// Read alarm data
// The operation rule is the same as EpmWrite
// epaddr is between 0 and 511
///////////////////////////////////////////////
void fEepromRead(byte *destbuf, word epaddr, byte sum)
{
	byte epmstate,addr;
	byte ReadCom;
	byte i,j;
	sum = epaddr+sum>512?512-epaddr:sum;	// avoid wirte beyond the boundary
	for (j=1; j<=sum; j++) {
		epmstate = 0x01;
		#ifndef DBG_EPM
		while (epmstate == 1)  {
			epmstate = EpmRdsr();
			epmstate &= 0x01;
		}
		#endif
		EPSCK = 0;
		EPCS =0;
		ReadCom = epaddr>0x0ff?0x0b:0x03;
		addr = (unsigned char)(epaddr&0xff);
		for (i=1;i<=2;i++);
		EpmPutByte(ReadCom);
		for (i=1;i<=2;i++);
		EpmPutByte(addr);
		EPSO = 1;
		*destbuf++ = EpmGetByte();
		epaddr++;
		EPCS = 1;
		epmstate = 0x01;
		#ifndef DBG_EPM
		while (epmstate == 1)  {
			epmstate = EpmRdsr();
			epmstate &= 0x01;
		}
		#endif
	}
}
//0x00使能看门狗
//0x60关闭看门狗
void	fEepromInit(byte InitCommand)
{
	EPCS = 1;
	EPSI = 1;

	EpmWrsr(InitCommand);                // initiate x5045 state register, enable watch dog ,1.4s

                                        // initiate x5045 state register, disable watch dog

}
// 往5045写一个整型数
void fEepromWriteW(word WriteData,word epaddr)
{
   unsigned char buffer[3],temp;
   temp=WriteData;
   buffer[0]=(char)temp;
   buffer[1]=(char)(WriteData>>8);
   fEepromWrite(buffer,epaddr,2);
}
//从5045中读一个字
void fEepromReadW(word *ReadData,word epaddr)
{
	  unsigned char buffer[3];

          fEepromRead(buffer,epaddr,2);
          (*ReadData)=(buffer[1]<<8)+buffer[0];

}