Add Tesla charge port opener sample

[nunojpg]

Hello, I would appreciate if someone experienced could confirm OOK_MC_ZEROBIT is the correct decoding (while coding is not so relevant since its a fixed value regardless of how we interpret it), and if there should be any different handle for the preamble since I am confused with the row '0000'.

[zuckschwerdt]

The .cu8 spectrogram (use https://triq.org/pdv/ ) looks like clean OOK. Running the sample with -A gives the pulse data. There is a preamble and then three repeats, each preceded by a de-sync of invalid 3 half-bit 0's, in each packet. Yes that's MC. But you could also read it as PCM to get the preamble and de-syncs. A conf file flex decoder will work, there are some examples of similar "single code" protocols in the conf folder.

[nunojpg]

I included already a flex decoder example in the README:

-X "n=Tesla charge port opener,m=OOK_MC_ZEROBIT,s=400,r=1200,t=20"

But I am not sure if there is a way to match multiple rows of data.

[zuckschwerdt]

That timing spec is already optimal.

[nunojpg]

time      : @0.203604s
model     : Tesla charge port opener               count     : 5             num_rows  : 5             rows      :
len       : 13           data      : 0000,
len       : 52           data      : 094aa9b38da19,
len       : 52           data      : 094aa9b38da19,
len       : 51           data      : 094aa9b38da18,
len       : 1            data      : 0
codes     : {13}0000, {52}094aa9b38da19, {52}094aa9b38da19, {51}094aa9b38da18, {1}0

Considering there are 3 rows of same data (except for the last bit), is there a way for a conf decoder to match multiple rows of data or this needs a custom function?

[zuckschwerdt]

You likely want (from rtl_433 -X)

	repeats=<n> : only match if some row is repeated <n> times
		use opt>=n to match at least <n> and opt<=n to match at most <n>
	match=<bits> : only match if the <bits> are found
	countonly : suppress detailed row output

i.e. ,repeats>=3,match=094aa9b38da1,countonly

[nunojpg]

There is always 2 rows = 094aa9b38da19 and 1 row = 094aa9b38da18.

repeats>=3 can never work.

With flex I can make sure two match 2 identical rows and the content 094aa9b38da19. I will do it, It's good enough.

Thanks for your hints.

[nunojpg]

@zuckschwerdt how would it be do add a decoder? If add the file to rtl_433/conf/tesla_charge-port-opener.conf and this must always be selected manually? Can this .conf decoders also be registered by default?

[zuckschwerdt]

There is a list of conf files read at startup. Copy the decoder there or add an include with config_file to one of the files.

Trying conf file at ...

[nunojpg]

Decoder: https://github.com/merbanan/rtl_433/pull/1704