atmel_serial losing characters under libmodbus

[christian pellegrin]

On Wed, Nov 11, 2009 at 1:44 PM, Josef Holzmayr
<zentrale.at.work at gmail.com> wrote:
> When using libmodbus on an atmel_serial line, it seems to lose about 1 char
> in 50 that it's supposed to receive. This is independet of the baud rate, it
> happens everywhere from 2400 to 19200. Full code excerpt from the lib is
> below, but basically reading is just an select/read pair. Are there some
> known issues with that particular tty device?
>

Hi, the only serial port on AT91 that gives me troubles is the DBGU
port which shares the interrupt with the timer tick. You see a lot of
serial overruns there if you have the kernel compiled with HZ=1000 on
that port (usually ttyS0).



-- 
Christian Pellegrin, see http://www.evolware.org/chri/
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