[ECOS] load on redboot

[Gary Thomas]

On Wed, 2004-05-05 at 06:45, sabine moulayes wrote:
> hello,
> 
> I have a little problem with redboot, I would like to use it with the 
> minicom, so I open a minicom on the port ttyS0, where my F35 is plug.
> it's ok, I power on the F35, and I have the redboot interface.
> Now I would like to load a programme : tracker.S3
> so I type load (enter) then ctrl a - s, I choose ymodem, then I choose the 
> programm file, but when the download begin, I have just :
> 
>     Sending: tracker.S3
>     Ymodem sectors/kbytes sent:   3/ 0kRetry 0: NAK on sector
>     Ymodem sectors/kbytes sent:   5/ 0kRetry 0: NAK on sector
>     Ymodem sectors/kbytes sent:   7/ 0kRetry 0: NAK on sector
>     Ymodem sectors/kbytes sent:   9/ 1 .....
> 
> and so on, I must stop this because I always have NAK on sector....
> Do you know where is the problem please?????

There doesn't seem to be a problem here - RedBoot and minicom are
communicating - data is being downloaded, albeit with retries.
Eventually, the data will get downloaded.  If there were other 
problems, then RedBoot would stop accepting data and the "kbytes sent"
value would not be increasing.

My guess is that your target is rather slow and can't keep up 
with Y-modem at the baud rate you are running. Try X-modem which
will use smaller blocks by default.

-- 
Gary Thomas <gary@mlbassoc.com>
MLB Associates


-- 
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss