Re: Need help with serial card + baycom

[Jim Bayer <kc9aop@yahoo.com>]

Fabio,

You may want to check out your /etc/modules.conf file to see if the baycom_ser_fdx is included. 
If you run the command "modinfo baycom_ser_fdx" it will return all possible parameters for the
module.  Another debugging method is to do an insmod or modprobe of the baycom_ser_fdx module at
root's command prompt and see what it complains about.  Also if you run dmesg and pipe it to less
(or more) you may see what the problem was at the system init time.  ALso a check of
/var/log/messages may net some diagnostic error reports.

Otherwise, since I don't know too much about the baycom, all I can suugest is that you compile the
module against the kernel source of the running kernel and try it again.  Since you know C, I
assume you know how to make the package.  I've run into issues with automake so be sure to
interrogate all of the make conversation.

'73 and good luck!


Jim - KC9AOP


--- Fabio IZ4AFW <iz4afw@libero.it> wrote:

> Hi guys,
>      I'm new to the list, and I need help to use a baycom modem with linux.
> 
> I used it before for a long time with linux, connected directly to the 
> RS-232 ports on the mainboard, and I had no problems, neither configuring 
> it, nor using it on the air.
> Now I need using those ports for different tasks, so I decided to buy a PCI 
> cards with 2 additional RS232 ports (and another LPT, but this is not 
> interesting to the problem).
> I bought a PCI cards made by SUNIX (model 4079T), based on the SUN1889 
> chip, which features a 16C650 UART (FIFO with 32 bytes, base speed 921600 
> bps), which linux seems to recognize (setserial can set the various 
> parameters, even if actually it recognizes it as a 16550A UART), and that 
> is given as fully 16C650, 16C550, 16C450  compatible (and supported by linux).
> Anyway, I have some problems using it with the baycom.
> I'm using kernel 2.4.26 and latest ax25 suite. When I start up the whole 
> thing, I have no errors until I invoke ifconfig. Then I have the following 
> error message:
> 
> SIOCSIFFLAGS: No such device or address (repeated 2 times).
> 
> Of course, I can't use the baycom modem at all. Checking the logs it seems 
> that the baycom module (baycom_ser_fdx.o) can't correctly recognize the 
> uart and/or the serial port (which by the way is at address 0xb408 irq 11), 
> because I don't get any "ser_fdx: open address 0xb408 etc." line in any log.
> I tried checking the source code to see if it has problems recognizing the 
> UART, but actually I have no clue where to search for problems. I added 
> some printk() calls in several points in the code (ser12_check_uart() and 
> ser12_open()) but I have no output from these, so I assume that the problem 
> is elsewhere...
> 
> Can anyone help me?
> I know C well enough to make some changes in the code of the driver, but 
> actually I'd like to have some more clues to know where the problem is 
> located...
> 
> The PC is located in a remote site (with no internet access), so things 
> slow down a little...
> 
> Thanks very much,
> 73 & Ciao from Italy
> Fabio
> IZ4AFW
> 
> 
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