[uart] warning: event queue is full

addshore 06/30/2025 09:32 AM

Trying to start some Uart comms on a bit of new hardware, and running into this warning in a loop forever

https://github.com/toitlang/toit/blob/cc2adf3fa0022dd7392d793c07fcb3fc45cba946/src/resources/uart_esp32.cc#L627

[uart] warning: event queue is full
[uart] warning: event queue is full
[uart] warning: event queue is full
[uart] warning: event queue is full
[uart] warning: event queue is full
[uart] warning: event queue is full
[uart] warning: event queue is full
[uart] warning: event queue is full
[uart] warning: event queue is full
[uart] warning: event queue is full
[uart] warning: event queue is full

Seems to do that until reaching

Potential deadlock detected:
  Process: 0
  Program: 84bd67cd-f6e7-5359-850b-5709092d5c01
fatal: Potential dead-lock

abort() was called at PC 0x4202f841 on core 0

Or sometimes it breaks out of the loop and works?
Any pointers for debugging / whats going on?

toit/src/resources/uart_esp32.cc at cc2adf3fa0022dd7392d793c07fcb3f...

Program your microcontrollers in a fast and robust high-level language. - toitlang/toit