eeprom.c

#include "eeprom.h"
#include "sys.h"
#include "STC15.H"
#include "intrins.h"

void IapIdle(void)
{
	IAP_CONTR = 0;
	IAP_CMD = 0;
	IAP_TRIG = 0;
	IAP_ADDRH = 0x80;
	IAP_ADDRL = 0;

	return;
}

uint8_t IapReadByte(uint16_t addr)
{
	uint8_t dat;

	IAP_CONTR = ENABLE_IAP;
	IAP_CMD = CMD_READ;
	IAP_ADDRL = addr;
	IAP_ADDRH = addr >> 8;
	IAP_TRIG = 0x5A;
	IAP_TRIG = 0xA5;
	_nop_();
	dat = IAP_DATA;
	IapIdle();

	return dat;
}

void IapProgramByte(uint16_t addr, uint8_t dat)
{
	IAP_CONTR = ENABLE_IAP;
	IAP_CMD = CMD_PROGRAM;
	IAP_ADDRL = addr;
	IAP_ADDRH = addr >> 8;
	IAP_DATA = dat;
	IAP_TRIG = 0x5A;
	IAP_TRIG = 0xA5;
	_nop_();
	IapIdle();

	return;
}

void IapEraseSector(uint16_t addr)
{
	IAP_CONTR = ENABLE_IAP;
	IAP_CMD = CMD_ERASE;
	IAP_ADDRL = addr;
	IAP_ADDRH = addr >> 8;
	IAP_TRIG = 0x5A;
	IAP_TRIG = 0xA5;
	_nop_();
	IapIdle();

	return;
}