Trying to receive Manchester-encoded data

u063096
Posts: 3
Joined: Wed Feb 13, 2019 3:27 pm

Trying to receive Manchester-encoded data

Postby u063096 » Wed Feb 13, 2019 3:34 pm

Hi guys,

being in the transition from Arduinos to the ESP32, I am trying to rebuild some projects I did on the Arduino platform to learn the differences.

In one of these projects I am receiving environment sensor data via 433MHz, in short 16 byte bursts. The sender is an ATtiny85 using this library: http://mchr3k.github.com/arduino-libs-manchester/.

On the ESP32 this library obviously does not work, since it depends a lot on interrupts on the Arduino side.

Is there a complementing Manchester library available for the ESP32 that is able to deal with the data sent by the ATtiny?

Any hints are highly appreciated.

Ciao, Michael

ESP_Sprite
Posts: 2260
Joined: Thu Nov 26, 2015 4:08 am

Re: Trying to receive Manchester-encoded data

Postby ESP_Sprite » Thu Feb 14, 2019 3:19 am

You may want to look into the RMT peripheral; it can at least assist you in collecting the Manchester data so you can then decode it at your leisure.

u063096
Posts: 3
Joined: Wed Feb 13, 2019 3:27 pm

Re: Trying to receive Manchester-encoded data

Postby u063096 » Thu Feb 14, 2019 6:19 am

Thank you, will do.

So no one so far seems to have had to deal with 433MHz data on the ESP32? Rats.

Is there an introduction into the RMT available on the web I could use for starters?


u063096
Posts: 3
Joined: Wed Feb 13, 2019 3:27 pm

Re: Trying to receive Manchester-encoded data

Postby u063096 » Thu Feb 14, 2019 11:34 am

The obvious :D

Thank you. In the meantime I found some repositories on Github dealing with the RMT. Not specifically my Manchester code, but at least examples on how to apply the API.

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