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SpenceKonde / megaTinyCore

Arduino core for the tinyAVR 0/1/2-series - Ones's digit 2,4,5,7 (pincount, 8,14,20,24), tens digit 0, 1, or 2 (featureset), preceded by flash in kb. Library maintainers: porting help available!
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Integrate QTouch functionality #1141

Open Ilidur opened 2 months ago

Ilidur commented 2 months ago

Hello, the QTouch functionality for the ATTiny chips is not available in this library. I've manage to put together a functional but slightly hacked together implementation borrowing the work from https://github.com/xukangmin/TinyCore .

My target is the ATTiny1616 so I won't be able to test any suggestions on any other board. Would the project be interested in this contribution? The license of the original library by @xukangmin is MIT.

hmeijdam commented 2 months ago

The PTC peripheral has always been a mystery to me. A peripheral without any associated registers gives me a headache.

So is the TinyTouch you refer to really using the PTC peripheral or is it bitbanging touch functionality through ADC, Timer(s) and interrupts?

Ilidur commented 2 months ago

Yes, it uses the QTouch library, although it is proprietary, comes as a precompiled library. https://github.com/xukangmin/TinyCore/tree/master/avr/libraries/Touch/src

MX682X commented 2 months ago

The code on github has already a PTC library. However, I'm finishing up the DA support right now and made some small changes in the API, like changes to the argument order (it will be x, y instead of y, x for the pin bitmap, should only affect self-cap sensing). I managed to make it even possible to support 8k chips, which have the peripheral, but lack the memory to support qTouch

MX682X commented 1 month ago

The most up-to-date code can be found in the DxCore, no further changes to the API is to be expected. If there won't be any bug complains, it will be copied to this repository aswell.