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cdeletre / txtpms

Tools to generate IQ records that simulate TPMS sensors. Directly inspirated from rtl_433 TMPS devices source code.
MIT License
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Question: Baud and Deviation #3

Closed Crsarmv7l closed 1 year ago

Crsarmv7l commented 1 year ago

Hi, @cdeletre,

Thank you very much for your work on this project. I have been wanting to get into TPMS, and I enjoy seeing what is going on around me.

I got the baud and deviation for citroen (B: 19200 and D: 116,000), was wondering if you have the normal baud and deviation for Ford and Toyota.

cdeletre commented 1 year ago

Hi @Crsarmv7l

Thank you for your feedback. It has been a long time I haven't played with TPMS sensors but looking back at the original rtl_433 source code I can see that the baudrate should be the same for citroen, ford and toyota implemented here. You can double check that the three device use the same number of samples for a pulse.

Citroën Ford Toyota

For the deviation I'm sorry but I have no idea but if I found something I'll post it here.

Have fun !

Crsarmv7l commented 1 year ago

Thank you

cdeletre commented 1 year ago

Author

Hey! I got some flashbacks and I found the sample files repository I was playing with years ago (it's from the rtl_433 project)

Here is for the Ford TPMS: https://github.com/merbanan/rtl_433_tests/tree/master/tests/Ford_TPMS

And for Toyota TPMS: https://github.com/merbanan/rtl_433_tests/tree/master/tests/Toyota_TPMS

I guess these IQ records are 250 ksps but I haven't checked. You should be able to find the deviation by opening these files in inspectrum for example.

Enjoy ;)

Crsarmv7l commented 1 year ago

No luck getting ford or toyota generated files to work with rtl433 as of yet, but I will keep at it. As an aside, had to change to this in all the tpms(model).py in order to get them working

print(( 'manchester = %s' % str(manchester).replace('\xff','1').replace('\x00','_') ))

Crsarmv7l commented 1 year ago

Whelp, I spent a long time trying to solve a problem that was only kind of an issue. Rtl_433 ignores deviation. Its still not seeing my .cu8 files even with the buffer signal, but my end goal is a .sub file which when played back works fine.

Sorry, and thanks again.