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adafruit / circuitpython

CircuitPython - a Python implementation for teaching coding with microcontrollers
https://circuitpython.org
MIT License
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Add 4-Color Waveshare EPaper-Display to displayio/epaperdisplay #8785

Open josch0 opened 6 months ago

josch0 commented 6 months ago

I would like to use the following Waveshare EPaper display with CircuitPython.

https://www.waveshare.com/product/displays/e-paper/epaper-1/7.3inch-e-paper-g.htm

It is a 4-color display (Red/Yellow/Black/White). 4 pixels per byte are transmitted (= 2 bit color depth).

Black: 00b White: 01b Yellow: 10b Red: 11b

I have seen in the current C source code that the 7-color display from Waveshare is already supported. Unfortunately, I am not able to contribute C code for the 4-color variant myself.

There is already a display driver for the 7-color display (https://github.com/adafruit/Adafruit_CircuitPython_ACeP7In) I would provide a driver for the 4-color variant as soon as Circuit-Python supports 4 color mode.

@tannewt Could you add the 4 color mode? I guess the implementation is not very complex, based on the existing code of the 7-color variant.

Thanks! Joachim

carson-coder commented 6 months ago

I could try to add this but I don't have a epaper display

joshua-beck-0908 commented 6 months ago

Yeah, I'm trying to get four bits per pixels working for a greyscale eInk display, so it would be great to just have a parameters for the colour depth. Current implementation seems a little limited. I'll have a look.

tannewt commented 5 months ago

I don't plan on adding two highlight color support anytime soon because Adafruit doesn't currently carry the display.