Syslinux - Dec 2005 - Reading from a serial device in a com32 module

Hi,

I need to read some data from a specific device communicating through
the serial link.
I am a little confused about the different ways to communicate through
the serial link with the syslinux libc from a com32 module.

There are some functions in syslinux libc to use a serial device, but
they all seem related to a serial console. Is there a way to read from
a com port not related to a serial console ? All available functions
seem to do nothing if no serial port is configured.
I don't need a serial console, I just need a way to configure a serial
port then read from it.

If it is not possible at the moment and if there are some means to do
it already planned, I would be glad to contribute to them.

Could someone inform me about the planned (or perhaps already
implemented, forgive my ignorance in this case) ways to do this ?

I already consider syslinux with com32 as a little single threaded (or
process) OS (atm) with a lot of capabilities, syslinux klibc
derivative has a lot to do with this, thanks again for that.

Best regards,

R. Lefevre

Remi Lefevre wrote:
> Hi,
> 
> I need to read some data from a specific device communicating through
> the serial link.
> I am a little confused about the different ways to communicate through
> the serial link with the syslinux libc from a com32 module.
> 
> There are some functions in syslinux libc to use a serial device, but
> they all seem related to a serial console. Is there a way to read from
> a com port not related to a serial console ? All available functions
> seem to do nothing if no serial port is configured.
> I don't need a serial console, I just need a way to configure a serial
> port then read from it.
> 
> If it is not possible at the moment and if there are some means to do
> it already planned, I would be glad to contribute to them.
> 
There is nothing like that implemented at the moment.  It shouldn't be 
too hard to implement since there is a pretty complete I/O device layer 
implemented in libcom32.
> Could someone inform me about the planned (or perhaps already
> implemented, forgive my ignorance in this case) ways to do this ?
> 
> I already consider syslinux with com32 as a little single threaded (or
> process) OS (atm) with a lot of capabilities, syslinux klibc
> derivative has a lot to do with this, thanks again for that.
Thank you :)

	-hpa