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adafruit / Adafruit_EPD

e-paper display driver for Arduino
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Adafruit_EPD::begin doesn't return status code? #63

Closed ericklein closed 2 years ago

ericklein commented 2 years ago

The begin routine doesn't return a status code, so it doesn't appear that a developer can handle when there is no screen attached or is improperly attached? I reviewed the .h and .cpp for other ways to determine status, but did not see a way to do it?

ladyada commented 2 years ago

you could look at the busy pin but no, as EPDs are write-only you cannot detect their connection.