How to enter low numbers to tdtool?

[mountaindude]

I would like to repeat a packet 3 times using raw format and tdtool, but fail to find the proper raw string..
How should the R prefix be used to achieve the desired 3-repeat? (Running tdtool on Linux)

'S88jj8jjjj+' | tdtool --raw -


'R2S88jj8jjjj+' | tdtool --raw -
will not work, it will (as expected) repeat 50 times..

Thanks,
Göran

[micke.prag]

Raw expects binary data. You must use ascii 2 as parameter to R.
Example:

Code: Select all

$ echo -e "R\x02S$k$k$k$k+" | tdtool --raw -

[mountaindude]

Thanks!

[mountaindude]

Another related question:

Is it possible to send longer pulses than 255*10 = 2555 us?
The device I am trying to communicate with expects a rather long leading/trailing pulse (ca 20 ms), how is that achieved using the raw protocol?

[micke.prag]

Which batch is your TellStick from?

B11 or later can use ascii 1 as a "zero pulse".
Example:

Code: Select all

$ echo -e "S\xFF\x01\xFF+" | tdtool --raw -

This should combine 0xFF and 0xFF to one 0x01FE pulse.


What protocol are you trying to decode?

[mountaindude]

Which batch is your TellStick from?

Not sure - but it's the one with external antenna. Bought ca 3 months ago.

B11 or later can use ascii 1 as a "zero pulse".
Example:

Code: Select all

$ echo -e "S\xFF\x01\xFF+" | tdtool --raw -

This should combine 0xFF and 0xFF to one 0x01FE pulse.

Nice! Will give it a try, should be easy enough to see if it works using the logic analyzer

What protocol are you trying to decode?

Jung's 433 MHz wireless switches, dimmers etc.

I've taken the easy route and don't care about reverse engineering the protocol itself, instead I just capture the pulse trains when sent from a remote
control. If I can re-create those pulse trains using a Tellstick that will be enough.
But of course - would be nice to reverse engineer the actual protocol too... just don't have the time to do it.