Problem with home-brew receiver

[Pedro W. <ped...@bo...>]

Hi

I built the serial receiver but I am having problems setting it up. It
receives some signal, but there's something messy with it

I am using Lirc version 0.6.6, on Slackware Linux 2.4.21. When I load
the driver I get this syslog output:

kernel: lirc_serial: in calc_pulse_lengths_in_clocks, freq=38000,
duty_cycle=50, clk/jiffy=4997120, pulse=6575, space=6575,
conv_us_to_clocks=499
kernel: lirc_serial: auto-detected active low receiver

I am using an universal remote I have with a config file found in the
archives. It's the Sony Rm V11 on TV 001 mode:


begin remote

  name  RM-V111T
  bits           11
  flags SPACE_ENC|CONST_LENGTH
  eps            30
  aeps          100

  header       2459   532
  one          1263   527
  zero          664   527
  ptrail        665
  gap          44854
  min_repeat      2
  toggle_bit      0


      begin codes
          BUT_1                    0x0000000000000004
          BUT_2                    0x0000000000000404
          BUT_3                    0x0000000000000204
          BUT_4                    0x0000000000000604
          BUT_5                    0x0000000000000104
          BUT_6                    0x0000000000000504
          BUT_7                    0x0000000000000304
          BUT_8                    0x0000000000000704
          BUT_9                    0x0000000000000084
          BUT_0                    0x0000000000000484
          REW                      0x00000000000006C4
          PLAY                     0x00000000000002C4
          FFW                      0x00000000000001C4
          STOP                     0x00000000000000C4
          MUTE                     0x0000000000000148
          VOL_UP                   0x0000000000000248
          VOL_DN                   0x0000000000000648
          PRG_UP                   0x0000000000000044
          PRG_DN                   0x0000000000000444
          PAUSE                    0x00000000000004C4
          POWER                    0x0000000000000544 
      end codes

end remote


When I run lircd and IRW with lircd in debug mode, I get the following
log output when I press some buttons on the remote:

Oct 29 13:48:15 ashmedai lircd 0.6.6: config file read
Oct 29 13:48:15 ashmedai lircd 0.6.6: lircd(serial) ready
Oct 29 13:48:36 ashmedai lircd 0.6.6: registering local client
Oct 29 13:48:36 ashmedai lircd 0.6.6: accepted new client on /dev/lircd
Oct 29 13:48:36 ashmedai lircd 0.6.6: driver supports receiving
Oct 29 13:48:40 ashmedai lircd 0.6.6: c4321497
Oct 29 13:48:40 ashmedai lircd 0.6.6: trying "RM-V111T" remote
Oct 29 13:48:40 ashmedai lircd 0.6.6: <4321497
Oct 29 13:48:40 ashmedai lircd 0.6.6: sync
Oct 29 13:48:40 ashmedai lircd 0.6.6: +0
Oct 29 13:48:40 ashmedai lircd 0.6.6: failed on header
Oct 29 13:48:40 ashmedai lircd 0.6.6: failed "RM-V111T" remote
Oct 29 13:48:40 ashmedai lircd 0.6.6: decoding failed for all remotes
Oct 29 13:48:40 ashmedai lircd 0.6.6: c583
Oct 29 13:48:40 ashmedai lircd 0.6.6: trying "RM-V111T" remote
Oct 29 13:48:40 ashmedai lircd 0.6.6: <0
Oct 29 13:48:40 ashmedai lircd 0.6.6: space expected
Oct 29 13:48:40 ashmedai lircd 0.6.6: failed on sync
Oct 29 13:48:40 ashmedai lircd 0.6.6: failed "RM-V111T" remote
Oct 29 13:48:40 ashmedai lircd 0.6.6: decoding failed for all remotes


I tried generating my own config file with irrecord, and it says that
each button should generate no more than 10 dots of output, but mine
generate dozens if I hold a button for a second. After a few buttons it
quits with the message:

irrecord: could not find gap.
irrecord: gap not found, can't continue

I tried with different remotes and the same happens. I used
three diferent IR receivers removed from two old VCRs and a TV, as I
could not find any of the 'recommended' ones, and the same problem
repeats. As at least I get some input, I hope it's not a hardware
problem, and maybe some misconfigure on my system. 

I searched on the list archives for a similar problem, but could not
find anything. Any suggestion ?


Thanks in advance

Pedro Werneck