UART interrupt priority

[AA.26]

Hi Team,

I would like to know which MCU has the highest UART interrupt priority.

Thanks & Regards,
Anbu

[Hl_st]

Hello,

UART (USART) interrupt priority is set to 0 (the lowest priority) by default. But it can be easily changed up to the highest priority. It can be changed in code or in CubeMX in NVIC settings:

 

[Tesla DeLorean]

The priority and preemption level are usually configurable within the Cortex-Mx core. You should generally make interrupts short and quick, buffering and processing later, or use DMA.