Re: Is there a signal length or bit length limit for irsend and can I increase it?
Bengt Martensson <[email protected]> Sun, 23 Jun 2019 12:41:26 +0200
| Newsgroups | gmane.comp.hardware.lirc |
|---|---|
| Message-ID | <[email protected]> |
On 6/16/19 11:58 PM, matrzh wrote: > *Problem: > *I need to blast a signal that seems to repeat with no gap. > The signal has a Header, a 64 bit word, and a trailing '1' corresponding to > about a 600us pulse and a 190us gap and then it sends the 5000us pulse of > the header, again. > ... > *Question: > *Is there a way to achieve what I want with lirc? Or do I have to give it > up. > > *Background > *I must apologise for hacking and stretching the use of lirc a bit. What I > am trying to simulate is a 433MHz on_off keying transmitter for a video > screen. I use a bit-banging output device with no modulation for the > signals as "Lirc Device". In principle, instead of a IR-Diode being turned > on and off, a 433Mhz transmitter is turned on and off at the rhythm of the > lirc output. > ... For a positing to this list, list the exact hardware you are using, the driver, the options (/etc/lirc/lirc_options.conf if applicable), Lirc version, OS version including kernel, and in particular your lircd.conf. Having said that,... I have successfully send such signals with an Arduino + a TX433-module; for example http://www.harctoolbox.org/arduino_nano.html with an additional TX433. So it may be possible to thus use the Girs Lirc driver. I can probably tell you more when you post the lircd.conf and your hardware. Ohhh, and signals are "sent" or "transmitted", not "blasted"... (being grumpy today :-)). Greetz, Bengt