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RE: Serial problem on EB40
- To: jskov at cambridge dot redhat dot com
- Subject: RE: [ECOS] Serial problem on EB40
- From: Daniel dot Andersson at combitechsystems dot com
- Date: Wed, 11 Jul 2001 09:59:53 +0200
- Cc: ecos-discuss at sourceware dot cygnus dot com
Do you mean any special part?
The thing that makes me a bit confused is that i get a valid handle back
from the lookup function but when i try to use it then I can't.....This
indicates that something is wrong in the setup of the "handles". In my
serial file i have the following:
DEVTAB_ENTRY(at91_serial_io0,
CYGDAT_IO_SERIAL_ARM_EB01_SERIAL0_NAME,
0, // Does not depend on a lower level
interface
&cyg_io_serial_devio, //&serial_devio,
at91_serial_init,
at91_serial_lookup, // Serial driver may need initializing
&at91_serial_channel0
....which seems to be in every serial device setup. However, since i can't
get by the "t->handlers->set_config" then something must be wrong in the
"cyg_io_serial_devio"-part, am i write? Where do we have the connection
between the "cyg_io_serial_devio" and my actual set_config function. I
assume that this is through the funs? My funs table looks like this:
static SERIAL_FUNS(at91_serial_funs,
at91_serial_putc,
at91_serial_getc,
at91_serial_set_config,
at91_serial_start_xmit,
at91_serial_stop_xmit
);
....and the functions they all exists in my serial file. Have i missed
anything that might cause this problem?
Regards, Daniel
> -----Original Message-----
> From: Jesper Skov [mailto:jskov@cambridge.redhat.com]
> Sent: den 11 juli 2001 09:21
> To: Andersson Daniel
> Cc: ecos-discuss@sourceware.cygnus.com
> Subject: Re: [ECOS] Serial problem on EB40
>
>
> >>>>> "Daniel" == Daniel Andersson
> <Daniel.Andersson@combitechsystems.com> writes:
>
> Daniel> Hi, I have a quite strange problem with my serial port (using
> Daniel> a EB40 board). I can get a handle to the port using the lookup
> Daniel> function but when i am trying to make any calls to it (like
> Daniel> cyg_io_set_config) then i get a -EDEVNOSUPP in return (see
> Daniel> clip below). It looks like the serial port isn't setup right
> Daniel> in the DEVTAB since the functioncall "t->handlers->set_config"
> Daniel> in iosys.c doesn't work. Any clues of what the problem maigt
> Daniel> be?
>
> You should have a look at the serial driver code.
>
> Jesper
>