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adafruit / Adafruit_EPD

e-paper display driver for Arduino
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Getting RED instead of BLACK with PID 4229 #47

Closed caternuson closed 3 years ago

caternuson commented 3 years ago

Re this thread: https://forums.adafruit.com/viewtopic.php?f=47&t=175386

Seems to be working, but black is showing up as red.

Using a 2.7" Tri-Color eInk / ePaper Shield (PID 4229): https://www.adafruit.com/product/4229

ladyada commented 3 years ago

@makermelissa should probably update the example code to use ThinkInk definitions, and test/verify

makermelissa commented 3 years ago

Yeah, for sure.

makermelissa commented 3 years ago

Right now, I can't get the think ink demo to display on mine properly. It looks like noise, except if I use the Airlift, then it prints a message about not being able to connect to wifi, so this is a little bigger than just changing some initializer and I'll need circle back to this in the next little bit. It does at least update with something, so that's good.

makermelissa commented 3 years ago

Ok, so it turns out I had the CS and DC pins backwards as well as the SRAM CS pin wrong. After fixing those I am getting something that makes sense, except all white is coming through as red for me, everything else looks fine.

makermelissa commented 3 years ago

Oh, red and black may be backwards as well. I haven't verified it.