serial port weird chars ...

Roberto Alejandro Espi Munoz raespi at
Fri Aug 7 12:03:52 PDT 2015

Both scenarios work well on another host.  On my host serial port when 
interacting with one bootloader the communication is fine and with 
barebox fails.  When using a USB-serial adapter there's no problem.   
Perhaps there's a problem on my board but why does the first connection 
work and with barebox doesn't ?

On 08/07/2015 12:41 PM, Antony Pavlov wrote:
> On Fri, 07 Aug 2015 10:41:12 -0400
> Roberto Alejandro Espi Munoz <raespi at> wrote:
>> Hi ... I'm currently having some trouble with displaying characters
>> correctly in my terminal.  I'm using a board equivalent to the
>> mini2440.  This one has a NOR and a NAND.  I connect to it over a serial
>> port interface.  When I boot up the board in debug mode I'm able to see
>> clearly the messages displayed by the S3C2440A USB Downloader which is
>> copied in the NOR interface, I then download my barebox binary over the
>> USB interface and when it boots I get a lot of weird characters on
>> screen.  The console seems to respond correctly, I issue for example the
>> "reset" command and it resets but I can't make out what is displayed.
>> I was guessing at first a serial port configuration problem on my
>> operating system (I use Linux), tried it over on Windows and same
>> effect, the first bootloader works great and barebox when starting just
>> mangles the characters.
>> The other weird problem is than when I use a USB-Serial converter to
>> connect to the board's serial port everything works !
>> I'm currently using barebox 2012.09 and OpenSuse Linux 13.2
>> Any ideas ? thanks
> You have the problem if you use your host computer motherboard serial port (no matter, Linux or Windows),
> isn't it?
> And no problem if you use USB-Serial dongle. So it looks like host serial port problem.
> Could you try to connect the board to another host computer?
> -- 
> Best regards,
>    Antony Pavlov
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