serialEvent not handled

[asharect]

I used arduino example "SerialEvent", it was fine. But when I include Arduino_FreeRTOS, the serialEvent didn't work any more, how to fix it? rewrite avr ISR? but I noticed that there's no configMAX_SYSCALL_INTERRUPT_PRIORITY option in freertosconfig.h, it seems that the uart interupt always is blocked by task, even idle task.

[feilipu]

I have tried to replicate the issue you describe, but I can't.

See below screenshot.

The AVR ATmega is a very simple MCU. There is no interrupt nesting system (except intrinsic ordering) available. The configMAX_SYSCALL_INTERRUPT_PRIORITY option is not relevant to an ATmega port of FreeRTOS.

Please, check that you have the latest 8.2.3-16 Release of the Arduino_FreeRTOS library installed.

[joe31093]

I am not sure if this helps. I recently installed 8.2.3 (greiman) on my Teensy 3.6. The serial event is not being call. I have two tasks running. A heartbeat task which turns on off the LEDs. Another task waiting on a sem give in the serial event function so in can process the text. I have a print statement in the serial event and it is not being printed. I ran a similar example of the code you have above and the serial event worked fine. I am guessing running the scheduler affected the system interrupts.