On 04/20/2010 08:32 PM, Alex wrote:
> I have a problem with TS7260 COM port. I am trying to use COM1 port to read
> tilt sensor data. Sometimes the tilt sensor works good, and sometimes it
> "hangs" during power on. I narrowed down the problem to the fact that TS7260
> is sending something on COM1 during boot time, which occasionally blocks tilt
> sensor board. I already disabled getty() and removed JP2 jumper (so COM1
> should not be acting as console). Does anybody know what processes are
> trying to send data on the COM1 during boot-up time and how to turn off these
> processes?
>
> I am running "standard" off-the-shelf 7260 with 2.4.26 kernel. I can not use
> COM2 because it is already used for other purpose. Both 7260 and tilt sensor
> board are powered up at the same time.
When you boot your board the bootloader(s) will send data through COM1
(unless some jumpers are set), then the kernel will do that as well
when booting (can be disabled via the "console=none" kernel parameter
in redboot) and finally the init process will open a console on it (if
enabled in inittab).
Chris
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
--
Christian Gagneraud,
Electronics and software engineer
TechWorks Marine Ltd
4a, Park Lane
Dun Laoghaire, Co Dublin
Ireland
Tel: + 353 1 2365990
Fax: + 353 1 2365992
Web: www.techworks.ie
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