UART interrupt priority

2 replies
751 views

Hi Team,

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

Thanks & Regards,
Anbu

This topic has been closed for replies.

H

Hl_stBest answer

ST Employee

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:

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

H

Hl_stBest answer

ST Employee

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:

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

Tesla DeLorean

Guru

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.

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