Sensorcal not working

[iglesiasmarianod]

I've built the latest image and found sensorcal is not working.
It finds sensorboard as virgin and asks to initialize (even when the sensorboard is been calibrated before).
I clicked on "yes" to initialize the board again, but keeps seeing the board as virgin.
I ran sensorcal -c. The output is "EEPROM content not valid, run sensorcal -i"
I ran sensorcal -i and seems to run OK.
I suspect it has something to do with Checksum calculation or verification.
Running sensorcal -d The output is "EEPROM content not valid, run sensorcal -i" twice
From sensorcal:

		case 'd':
				// read actual EEPROM values
				printf("Reading EEPROM values ...\n\n");
				if( eeprom_read_data(&eeprom, &data) == 0)
				{
				  memcpy(sn,data.serial,6);
					printf("Actual EEPROM values:\n");
					printf("---------------------\n");
					printf("Serial: \t\t\t%s\n", sn);
					printf("Differential pressure offset:\t%f\n",data.zero_offset);
				}
				else
				{
					printf("EEPROM content not valid !!\n");
					printf("Please use -i to initialize EEPROM !!\n");
					exit_code=2;
					break;
				}

from 24c16.cpp

int eeprom_read_data(t_24c16 *eeprom, t_eeprom_data *data)
{
	// read eeprom data to struct
	if (eeprom_read(eeprom, (char*)data, 0x00, sizeof(*data))==1)
		return 1;						// Failed to read the EEPROM

	// verify checksum
	if (!verify_checksum(data))
	{
		printf("EEPROM content not valid !!\n");
		printf("Please use -i to initialize EEPROM !!\n");
		return 2;
	}
	else
	{
		return 0;
	}
}

It seems to be returning 2 and printing error message twice as eeprom_read() is not printing error messages.

[iglesiasmarianod]

Going back from

int update_checksum(t_eeprom_data* data)
{
	char* p_data;
	char checksum=0x00;

	p_data = (char*)data;

	for (size_t i=0; i<sizeof(*data); i++)
	{
		checksum += *p_data;
		p_data++;
	}

	//printf("Checksum: %x\n", checksum);
	data->checksum = checksum;
	return (0);
}

to

int update_checksum(t_eeprom_data* data)
{
	char* p_data;
	int i;
	char checksum=0x00;

	p_data = (char*)data;

	for (i=0; i<sizeof(data); i++)
	{
		checksum += *p_data;
		p_data++;
	}

	//printf("Checksum: %x\n", checksum);
	data->checksum = checksum;
	return (0);
}

in update_checksum and verify_checksum fixes the issue.