ThreadX conflict with Timer1

Forum|Forum|1 year ago
April 1, 2025
3 replies
475 views

Hi,

I'm using TIM1 in Encoder mode while running ThreadX in the program in STM32H523. I encountered an issue where TIM1→CNT only toggles between 0 and 1 when rotating the encoder. However, when I deactivated ThreadX, the encoder worked fine. I haven't enabled TIM1 interrupts and am only reading the register periodically. Where could the conflict between ThreadX and the TIM1 Encoder be?

waclawek.jan

Super User

Read out and check/post content of all TIM1 registers, when the problem occurs.

JW

J

Jeff4Author

Associate

Hello @waclawek.jan

This is the TIM registers. As seen in the images, the registers CR1, SR, CNT, DMAR change. The changes are only between 2 values in 2 images like a loop:

Thanks

waclawek.jan

Super User

TIM setting is OK, but this appears like there is no signal change at TIM1_CH2. Read out and check/post relevant GPIO registers, including observing changes of given pin's IDR bit during operation.

JW