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by kmk_321994
Fri Jun 28, 2024 7:56 am
Forum: STM32 Support
Topic: UART data drop at low priority
Replies: 1
Views: 16339

UART data drop at low priority

I am using an STM32F4 series MCU and have enabled two interrupts:

EXTI for edge trigger with Priority 6
Serial Driver UART with Priority 12

This means the EXTI interrupt has a higher priority than the UART interrupt. The EXTI interrupt is never missed.

Every time the EXTI interrupt occurs ...