Help needed in ATMEL ARM9 microcontroller

Dear All,

I am using ARM9 based ATMEL AT91RM9200 microcontoller for a
communication project. I

am using a custom designed PCB. Problem is when i am receiving data via
serial port, some

times the controller got hang up. Need to restart every time. I am
using RS485

communication and receive data via ttyS3 port. Presently i am receiving
data

in non-cannonical mode. controller have the time out value of
120microseconds for every byte.

Someone can tell me how to handle timer and signal handlers.

Thanks in Advance,

Regards,

Baaski

Hi bbaskaran,

I suggest you to go on : http://www.at91.com/

This is the web site of the Atmel ARM support group.

Regards,

ToF




bbaskaran a =E9crit :

> Dear All,
>
> I am using ARM9 based ATMEL AT91RM9200 microcontoller for a
> communication project. I
>
> am using a custom designed PCB. Problem is when i am receiving data via
> serial port, some
>
> times the controller got hang up. Need to restart every time. I am
> using RS485
>
> communication and receive data via ttyS3 port. Presently i am receiving
> data
>
> in non-cannonical mode. controller have the time out value of
> 120microseconds for every byte.
>
> Someone can tell me how to handle timer and signal handlers.
>=20
> Thanks in Advance,
>=20
> Regards,
>=20
> Baaski

In comp.arch.embedded,
ToF <cchristophe@gmail.com> wrote:
> bbaskaran a &#4294967295;crit :
>>
>> I am using ARM9 based ATMEL AT91RM9200 microcontoller for a
>> communication project. I am using a custom designed PCB.
>> Problem is when i am receiving data via serial port, sometimes
>> the controller got hang up. Need to restart every time. I am
>> using RS485 communication and receive data via ttyS3 port.
>> Presently i am receiving data in non-cannonical mode.
>> controller have the time out value of 120microseconds for
>> every byte. Someone can tell me how to handle timer and signal
>> handlers.
>
> I suggest you to go on : http://www.at91.com/
>
> This is the web site of the Atmel ARM support group.

That is an option, but I would suggest to him to ask a better
question here instead.

The AT91RM9200 has no ttyS3, non-canonical mode, or timer and signal
handlers. It only has USART0/1/2 and DBGU. So I suspect these terms
come from some sort of operating system he is using, which might be
linux. There is a good chance that the problem is in this unknown
software environment rather than in the hardware.


-- 
Stef    (remove caps, dashes and .invalid from e-mail address to reply by mail)