Hi, I' trying to write an .eep, and get always: "verification error, first mismatch at byte 0x0000"
I was hunting the problem down to with this small code sequence
(_writeNumber outputs a byte via the UART):
uint8_t test[5] EEMEM = { 3, 4, 5, 6, 7};
uint8_t test2[128] EEMEM = { 9, 8, 9, 9, 9};
(...)
_writeNumber (eeprom_read_byte(&test[1]));
_writeNumber ((uint8_t)(int)&test[1]);
_writeNumber (eeprom_read_byte(&test2[1]));
_writeNumber ((uint8_t)(int)&test2[1]);
eeprom_write_byte (&test[1], 25);
eeprom_write_byte (&test2[1], 26);
_writeNumber (eeprom_read_byte(&test[1]));
_writeNumber ((uint8_t)(int)&test[1]);
_writeNumber (eeprom_read_byte(&test2[1]));
_writeNumber ((uint8_t)(int)&test2[1]);
I get the following output:
000129 >> test value 2 in EEPROM address 129: is 0, should be 4
004001 >> test2 value 2 in EEPROM address 1: is 4, should be 8
025129 >> just to proove the EEPROM is not currupt - writing address 129
from code works
026001 >> just to proove the EEPROM is not currupt - writing address 1 from
code works
It seems like the bytes starting with address 128 get actually written from
address 0. Testing the same code with a ATmega1284 works like a charm,
hence I assume the .eep file is correct (created with avr-gcc). I was
investigating already a bit in the avrdude.conf, but cannot verify if the
problem comes from there or from elsewhere. Attached the eep file, and the
relevant conf section.
Many thanks for any hint...
best regards,
muli
avrdude.conf
Description: Binary data
RS232_TINY1634.eep
Description: Binary data
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