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takkaO / OpenFontRender

TTF font render support library for microcomputer.
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ESP32 crash with certain configuration #41

Closed chconnor closed 6 months ago

chconnor commented 6 months ago

Hi -- I think this is possibly a TFT_eSPI bug, but I wanted to draw your attention to it: https://github.com/Bodmer/TFT_eSPI/issues/3036

At first I thought this was an OFR problem, but the crash happens when the call to _drawPixel() happens (see that link for details). I don't know which library is actually causing the issue, though, so I wanted to let you know in case you thought it might be an OFR issue.

chconnor commented 6 months ago

For the record, this appears to have been inter-wire interference causing the screen (not the ESP32) to crash. Wrapping MOSI, MISO, and SCLK in grounded copper foil resolved the issue. It was a pretty strange pattern, but that seems to have stabilized things (for now).