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