Hi,
I've been playing with the demos on one of the 2.9" Greyscale E-Ink displays with a Challenger RP2040 (Not Adafruit, but running Arduino and Feather Compatible), and for some reason when I define the SRAM CS pin the screen doesn't display properly. When set to -1 the screen works fine, but when defined to D6 (Which seems to be the pin that should output to the SRAM CS) it doesn't display any of the demo info beyond the black/white border and rectangle.
Thanks
E-Ink SRAM not working
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