Re: LIRC support for USB-Serial on /dev/ttyUSB0?

[Peter F. Patel-S. <pf...@re...>]

I have a USB-UIRT working under Fedora 10, which uses /dev/ttyUSB0.  I
didn't do anything to the serial device, which showed up with modes
188,0.  

The setup was trivial, *except* for a "bug" in the lircd converter for
the device, which was generating checksum errors (because it was, by
design, only picking up the first three bytes of an 8-byte response).

I even recompiled lirc, for this device only, I think.  Still no
problems.

This is somewhat different than your setup, as I'm not configuring the
serial port outside lirc, but does indicate that there is a way to get
/dev/ttyUSB0 working under other distributions.

Peter F. Patel-Schneider


From: Kristian Lippert <kri...@ho...>
Subject: LIRC support for USB-Serial on /dev/ttyUSB0?
Date: Tue, 13 Jan 2009 00:16:24 +0100

> 
> Hi
> I'm trying to get LIRC to work with a remote control that talks to a
> Future Tech. Devices FT232 USB-Serial (UART) IC with some custom drivers
> onboard.
> The IR reciever is attached to /dev/ttyUSB0.
>  
> Configuration of the serial port in C looks like (and it works on Ubuntu
> 8.10!!!!!!!!):
>  
>       newtio.c_cflag = B57600 | CS8 | CLOCAL | CREAD; newtio.c_iflag =
> IGNPAR | ICRNL; /* raw input */ newtio.c_oflag = 0; /* raw output */
> newtio.c_lflag = ICANON; newtio.c_cc[VMIN] = 1; newtio.c_cc[VTIME] = 0;
>  
> The "raw input" is interpreted elsewhere in my C code. 
> Is it possible to only change some configuration files, like 
> /etc/lirc/hardware.conf
> /etc/lirc/lircd.conf
> /etc/lirc/lircmd.conf
> , and then make it work? Or must I create a new lirc-driver?
>  
> I started with a "custom IR input" during install of LIRC
> I have tried to change hardware.conf and then trying to reload the
> lircd-daemon using "/etc/init.d/lirc start -v"
> I always get the message:
> "Unable to load LIRC kernal modules. Verify your selected kernal modules
> in /etc/lirc/hardware.conf"
> I might not just have the right combination???
>  
> Please help!!!
>  
> Best Regards,
> hotlips