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adapter can hang until power cycled after being reset #11

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delan opened this issue Feb 17, 2024 · 1 comment
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adapter can hang until power cycled after being reset #11

delan opened this issue Feb 17, 2024 · 1 comment

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@delan
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delan commented Feb 17, 2024 •
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when resetting the adapter, the firmware can start getting stuck in Adafruit_SSD1306::begin or the initial Adafruit_SSD1306::display (pico led on), until the adapter is power cycled. this is especially likely to happen if you mash the reset button several times in quick succession. stack trace:

image

our 4pin i2c display (U2) doesn’t expose RES#, so we need to switch U2.VCC externally.
delan added a commit that referenced this issue Feb 17, 2024
@delan
firmware: set DISPLAY_RES# high on boot (#11)
8236d7b
delan added a commit that referenced this issue Feb 17, 2024
@delan
pcb: add external reset for display module (#11)
2c54635
delan added a commit that referenced this issue Feb 17, 2024
@delan
firmware: set DISPLAY_RES# high on boot (#11)
9dcf05f
delan added a commit that referenced this issue Feb 17, 2024
@delan
pcb: add external reset for display module (#11)
01679a7
@delan delan changed the title i2c display tx can hang if adapter is reset too frequently adapter can hang until power cycled if reset too frequently Feb 21, 2024
@delan delan changed the title adapter can hang until power cycled if reset too frequently adapter can hang until power cycled after being reset Feb 21, 2024
@delan
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delan commented May 25, 2024

fixed in pcb rev B0

@delan delan closed this as completed May 25, 2024
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