SparkFun Forums

[Fredrik_L]

Hello All,

I have just purchased a Amontec JTAG-Key (USB/JTAG) device.

I want to program the flash of the AT91SAM7A3 processor by using this interface and Open OCD.

I tried the instructions provided by Martin Thomas on

http://www.siwawi.arubi.uni-kl.de/avr_p ... index.html

However i get an error message "Lock Error Bit Detected".

Has anybody done this ?

Most thankful for any help config files flash scripts etc....

Best Regards
/Fredrik

[mlu]

Hi, eller snarare hej.

You must unprotect the part of flash memory that shall be erased and programmed.

Use the telnet client and check flash status, including which lockbits that are set , with
>flash info 0

Next unlock the lock regions that shall be changed with
>flash protect 0 <first> <last> off

And verify the result with
>flash info 0

And then try to flash the memory.

Hälsningar,
Magnus

[Fredrik_L]

Hej Magnus,

Thanks, Tackar !!

Now it works .

(Kul att få svar av en göteborgare, själv så sitter jag på Lindholmen)

Best Regards
/Fredrik