From: Fabio IZ4AFW (mihuwsm.ssikfya@nstu.ru)
Date: Sun Nov 14 2004 - 21:47:10 EET
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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