[mythtv-users] lirc serial transmitter with an SA2000

[Wayne Veilleux]

Hi all,

I know this is not the lirc mailing-list but I thought maybe someone 
had the same problem using the simple lirc serial transmitter from the
http://www.lirc.org/ site.

First, let me thanks all the developpers for that very useful MythTV 
software. I use it since 0.7 with and old WinTV bt878 TV tuner and now 
I bought a digital cable tuner (SA2000) to have a better resoltion and 
to solve some "noise" problem on some analog cable channel.

So, first I read the tutorial from Kent on that mailing list

(http://www.gossamer-threads.com/perl/mailarc/gforum.cgi?post=67881;search_string=lirc%20kent%40kmtdesigns.com;guest=1708499&t=search_engine#67881)

Everything seem to be fine, I mean compiling lirc from the cvs and use 
it as a receiver to change channel on my internal WinTV tuner card. 
But when I try to plug my home-made ir transmitter (the simple one 
from http://www.lirc.org/) I don't see me diode transmitter flashing 
neither anything on my SA2000 using a command like "irsend SEND_ONCE 
SA2000 2" where I get back that:

buffer: -BEGIN-
buffer: -SEND_ONCE SA2000 2-
buffer: -SUCCESS-
buffer: -END-

And, in /var/log/messages from the lircd daemon:
Dec  2 17:13:57 faleo lircd 0.7.0pre1[32489]: accepted new client on 
/dev/lircd
Dec  2 17:13:57 faleo kernel: lirc_serial: Interrupt 4, port 03f8 obtained
Dec  2 17:13:57 faleo kernel: lirc_serial: SET_SEND_CARRIER
Dec  2 17:13:57 faleo kernel: lirc_serial: in init_timing_params, 
freq=56000, duty_cycle=50, clk/jiffy=18677760, pulse=16676, 
space=16677, conv_us_to_clocks=1867
Dec  2 17:13:57 faleo kernel: lirc_serial: SET_SEND_DUTY_CYCLE
Dec  2 17:13:57 faleo kernel: lirc_serial: in init_timing_params, 
freq=56000, duty_cycle=50, clk/jiffy=18677760, pulse=16676, 
space=16677, conv_us_to_clocks=1867
Dec  2 17:13:57 faleo lircd 0.7.0pre1[32489]: removed client
Dec  2 17:13:57 faleo kernel: lirc_serial: freed IRQ 4

(btw, I also run mdk-9.1 and I uninstall all the lirc stuff including 
the libs). When I bought the diode transmitter I ask for a LD271 and 
they sold me  a NTE3017 from NTE which is called "Infrared Light 
Emmitting Diode (LED)" with Peak Emmission Wavelenght = 950nm and a 
Po=15mW.

Do you have any clue and/or any suggestion where I should look at to 
troubleshoot that problem ? Is there a way to know what is transmeting 
on my serial /dev/ttyS0 port ?

Thanks for any help.
-- 
------------------ Linuxez-vous les uns les autres -------------------
Wayne Veilleux ing.                        wayne.veilleux at sympatico.ca
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