STM32G4 Timer Break Interrupt Callback Function

batuhanky · ‎2025-12-01

Hi All,

I'm using STM32G4 with TIM1 for motor control. The BKIN hardware protection works correctly - when I pull the BKIN pin (PB10) low, the motor stops, and when high, it runs again with AOE enabled. However, the break interrupt never fires and HAL_TIMEx_BreakCallback is never called. I've verified that TIM1_BRK_TIM15_IRQHandler exists in stm32g4xx_it.c, NVIC is enabled. The break flag never gets set even though BKIN is functioning. What could prevent the break flag from being set while the hardware break feature still works?

I want to print diagnostic using BKIN callback routing but it doesn't work.

I've attached IOC timer configurations.

Best regards

TDK · ‎2025-12-01

Does a breakpoint in TIM1_BRK_TIM15_IRQHandler ever get hit?

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