flashrw.c

aduc7026裸机程序

#include "main.H"
 
unsigned int FlashReadByte(unsigned long addr)
{
	unsigned long tmpSta = 0;
	unsigned int  tmpVal = 0;

	FEEPRO = 0xEFFFFEFF; 	
	FEEADR = addr;
	FEECON = 0x01;
	tmpVal = FEEDAT;
	tmpSta = FEESTA;
	while((tmpSta & 0x04)){
		tmpSta = FEESTA;
	} 
	FEEMOD &= 0x7F;    //disable read
	if((tmpSta & 0x02)){
		return (1);
	}else{
		return tmpVal;
	} 
}
unsigned int FlashWriteByte(unsigned long addr,unsigned int halfword)
{
	unsigned long tmpSta = 0;
	FEEPRO = 0xFFFFFEFF;
	FEEMOD = 0x048;   	//enable erase/write
	FEEADR = 0x1234;
	FEEDAT = 0x5678;
	FEECON = 0x0c;
	FEEADR = addr;
	FEEDAT = halfword;
	FEECON = 0x03;	  	//first erase then write

	tmpSta = FEESTA;
	while((tmpSta & 0x04)){
		tmpSta = FEESTA;
	}
	FEEPRO = 0xFFFFFFFF;
	FEEMOD = 0x00;	  	//disable erase/write 
	if((tmpSta & 0x02)){
		return (1);
	}else{
		return (0);
	}
}