why i enable the predriver and external interrupt at the same time, the program will enter the external interrupt at the PWM frequency

[留郝.1]

just comment the code whitch set the pin to enable the predriver device, the interrupt will be normal​, hope your reply, thank you.

[waclawek.jan]

Which STM32?

What is "predriver"?

Describe relevant portion of the hardware - which pins are used?

Read out and check/post content of relevant GPIO, SYSFG (for EXTI mapping), EXTI and TIM registers.

JW