RE: Decoding IR signal

kattaliraees — Thu, 05 Sep 2019 00:32:54 GMT

https://github.com/kattaliraees/nrf52-IR/

RE: Decoding IR signal

Jørn — Wed, 05 Apr 2017 09:38:45 GMT

Hello Insaf

I am no expert in handling IR decoders but this is what I've found.

Timings would depend on the protocol used, but overall your plan seems reasonable.

When storing in an array you could use a global array of set size, and a static counter variable in the timer handler. This variable would be used to select the location in the array where you store your data. At the end of every timer handler execution, you could increase the counter variable by 1.

One thing to watch out for is counter variable overflow, causing it to revert to 0, as this would start overwriting data in the array. You would have to store the data in a more suitable location before that happens, if you need to.

Detecting stop would again depend on the protocol used, if the protocol has a specific stop indication that can be used, otherwise I think using a timer to detect timeout would be a good place to start.

EDIT:

I recommend reading through the answer to this post

devzone.nordicsemi.com/.../

There are several handy tips there.

Best regards

Jørn Frøysa