Dotaz: Atmega 644, avrdude: verification error

[DekeL]

Ahoj,

zasekol som sa pri programovani uP Atmega644. Na programovanie pouzivam : jtag kabel z GM. Avrdude pri programovani skonci s chybou

avrdude: verification error, first mismatch at byte 0x0000 0x0c != 0xff

Device signature precita spravne a spolahlivo, rovnako nieje problem modifikovat fuse bity. Dokonca funguje aj programovanie eeprom. Programovanie flash stale zlyhava.

K mikrokotroleru je pripojene VCC, AREF, AVCC, a GND. Dalej 14.7MHz krystalovy oscilator. Zapojenie skontrolovane milion krat. Mikrokontroler je napajany z programatora (4.2V).

Pomoze mi niekdo v mojom trapeni? Dakujem za akukolvek reakciu Adam

Odpovědi

[DekeL]

Odpoviem si s radostou a sam: Napajanie obvodu s JTAG programatora je nedostatocne, po pridani externeho napajacieho zdroja a stabilizatora LM78L05 programovanie prebehlo uspesne.

avrdude -F -p m644 -P /dev/ttyUSB0 -c jtag1 -U eeprom:v:blink.hex

avrdude: jtagmkI_initialize(): warning: OCDEN fuse not programmed, single-byte EEPROM updates not possible avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.01s

avrdude: Device signature = 0x1e9609 avrdude: verifying eeprom memory against blink.hex: avrdude: load data eeprom data from input file blink.hex: avrdude: input file blink.hex auto detected as Intel Hex avrdude: input file blink.hex contains 212 bytes avrdude: reading on-chip eeprom data:

Reading | ################################################## | 100% 0.25s

avrdude: verifying ... avrdude: 212 bytes of eeprom verified

avrdude: safemode: Fuses OK

avrdude done. Thank you.

Budiz moj pripad poucenim pre ostatnyh...

[DekeL]

Aha, tak nic, nevsimol som si ze programujem eepromku. Tak teraz uz vazne neviem a som zufaly... eeprom naprogramovat ide, flash nie..

[janius]

No napadlo ma ci si si neprepisal FUSE bity Nieco podobne sa mi stalo tiez, a potom som to poriesil tak, ze som naprogramoval druhy MCU tak aby generoval cca 1MHz signal a ten som priviedol ako hodiny pre "poskodeny" MCu, ktory sa nehlasil. Po tomto sa uz MCu prihlasil a nastavil som korekte fuse bity a uz to slo. Vid. http://www.larsen-b.com/Article/260.html

[DekeL]

FUSE bity su OK, povolene programovanie z JTAG i z SPI