[mythtv-users] Mandrake 9.1 -- Serial port problems

[Ray Olszewski]

Responses inline.

At 10:31 PM 6/12/2003 -0400, John Klimek wrote:

>Believe it or not, I went out and bought a DE9F connector (from RadioShack)
>and a new RJ22 cable.  The DE9F connector was the solder-kind, so I soldered
>the new RJ22 cable to the DE9F connector (using the regular pinouts... the
>same ones that I tried the very first time) and it worked FIRST TRY.
>
>Apparantly I had a bad RJ22 cable or my DE9F connector was bad.  Either way,
>I was thrilled when I finally saw it working correctly.
>
>I'm going to write-up a detailed HOW-TO and put it online to help out new
>people trying to make cables.  You were a HUGE help and I thank you very,
>very much.
>
>My new problem however, seems complicated (like everything for me).
>
>I'm somewhat familar with unix/linux/perl, etc.  /dev/cua1 is a symlink for
>/dev/cua/1 which is a character device.

With what permissions? I'm not up on the ins and outs of devfs setups, but 
I recall seeing on this list some reports of permissions problems with the 
v4l devices on such setups. So once again, make sure the userid you run the 
script as (probably mythtv) has read and write access to /dev/cua/1 . (One 
quick way to do this is to try running "setserial /dev/cua1" as that user 
(you appear to be running it as root beloe).

>Setserial tells me that everything
>is fine  (setserial /dev/cua1):
>
>[root at linux sofakng]# setserial /dev/cua1
>/dev/cua1, UART: 16550A, Port: 0x2f8, IRQ:3

Yes, this part is fine.

>2f8 and IRQ3 are the correct settings as well (I verified in BIOS and Win
>XP).
>
>Also, /dev/ttyS1 exists, but is not a character file.  setserial also tells
>me that device is fine.
>
>I'm using a modified RCA.pl script (its modified to support the new rca
>command set), and when I run it from the command line I get this:
>
>[root at linux sofakng]# ./new_rca.pl 354
>354 SEND:  0xFA [u] 0x46 [F] 0x1 [] 0x62 [b]
>    RECV: 0xF1[ERR 1]

Since you are using a modified script that I have not seen, I can't comment 
meaningfully on its operation. You might want to send it for examination 
(you can send it to me offlist if it is too long for reasonable posting on 
the list).

>Like I said, my cable works PERFECT under XP (DTVCON), so I know that
>everybody is setup correctly.  Linux obviously does not like me however...

Well ... since the script was modified, I do wonder it is is setting the 
right serial-port settings (bps and other stuff) for the "new" RCA box. I 
had assumed that those settings were OK since they obviously worked for the 
script's author with his equipment.

[old stuff deleted]