hackaton2019

// Marlin_eeprom.cpp

#include <stddef.h>
#include "stm32f4xx_hal.h"
#include "st25dv64k.h"
#include "dbg.h"

// this source implements four functions defined in Marlin/src/HAL/HAL_STM32F4/HAL.h:
//  eeprom_write_byte, eeprom_update_block, eeprom_read_byte, eeprom_read_block
// these functions are used in marlin PersistentStore api

#define DBG _dbg3 //debug level 3

#ifndef _DEBUG
extern "C" {
extern IWDG_HandleTypeDef hiwdg; //watchdog handle
}
#endif //_DEBUG


void eeprom_write_byte(uint8_t *pos, unsigned char value)
{
	uint16_t adr = (uint16_t)(int)pos;
	st25dv64k_init();
	st25dv64k_user_write(adr, value);
	DBG("EEwr %04x %02x", adr, value);
}

uint8_t eeprom_read_byte(uint8_t *pos)
{
	uint16_t adr = (uint16_t)(int)pos;
	uint8_t data;
	st25dv64k_init();
	data = st25dv64k_user_read(adr);
	DBG("EErd %04x %02x", adr,data);
	return data;
}

void eeprom_read_block(void *__dst, const void *__src, size_t __n)
{
	st25dv64k_init();
	st25dv64k_user_read_bytes((uint16_t)(int)__src, __dst, __n);
}

void eeprom_update_block(const void *__src, void *__dst, size_t __n)
{
	st25dv64k_init();
	st25dv64k_user_write_bytes((uint16_t)(int)__dst, (void*)__src, __n);
#ifndef _DEBUG
	HAL_IWDG_Refresh(&hiwdg); //watchdog reset
#endif //_DEBUG
}