#include <hwo/eeprom.h>
#include <avr/eeprom.h>

#include <sys/errno.h>

extern struct avr_eeprom_desc __ee_desc;

MUTEX	eepromMutex;

uint16_t eeprom_load(uint8_t bank,avrEEPROM *data)
{
	MUTEXED( &eepromMutex );
	avrChksum chk,eechk;
	
	if (bank < __ee_desc.num_banks)
	{
		eeprom_read_block(data, (void*)(0x20 * bank), 32);
		eeprom_read_block(&eechk, (void*)(__ee_desc.base_chksums + (bank<<1)), 0x02);
		chksum(&chk,data,32);
		
		if (chk.combined == eechk.combined)
			return ESUCCESS;

		bank += __ee_desc.num_banks;

		eeprom_read_block(data, (void*)(0x20 * bank), 32);
		eeprom_read_block(&eechk, (void*)(__ee_desc.base_chksums + (bank<<1)), 0x02);
		chksum(&chk,data,32);

		if (chk.combined == eechk.combined){
			return ESUCCESS;
		} else {
			return -ECRC;
		};
	};	
	return -ENOFILE;
};