[ANSWERED / SOLVED]Can not download binary file to Flash - AT91SAM7S256

thavali · Jan 9th 2011, 5:25pm

Dear you,

i use loadbin command to download binary to flash, the downloading have no error message but when check again the flash memory, and then the binary data hasn't written to flash. if i use J-Flash ARM, all things work nice.

[IMG]http://ca9.upanh.com/19.0.23727075.Dz10/jlink.jpg[/IMG]

Has the J-Link commander need a license for activating ?

Thanks you.
Trung Thang

SEGGER - Alex · Jan 10th 2011, 9:15am

Hello Trung,

Did you select the device before using the loadbin command?
Otherwise J-Link does not know which device shall be programmed.

Your seuquence in J-Link commander should look like as follows:
exec device = AT91SAM7S256
h
loadbin C:\flash.bin, 0x100000
mem 100000,100

Best regards
Alex

thavali · Jan 11th 2011, 4:03pm

thanks Alex,

i don't know that there need to have command: exec device = AT91SAM7S256.
After add the exec device = AT91SAM7S256 then all is OK.
I have a confuse that if i want to load the bin file to RAM (0x200000)then i don't need to add the command exec device = AT91SAM7S256 ?

BTW, thanks for your support.

SEGGER - Alex · Jan 13th 2011, 12:33pm

Hi thavali,

of course for downloading a bin file into RAM you do not need to specify the device because RAM
can be written directly by memory write accesses.
In order to program flash, you need to perform a flash-specifc alogrithm which differs (for internal flash)
from device to device. So the address were you want to download the bin file to is not sufficient
for J-Link to know:
which device you are working with,
if this address is RAM or flash
and if it is flash which algorithm is needed.

Best regards
Alex

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