STM32F103C8T6 TIM1 in ENCODER MODE GPIO Pins

[Vin1947]

Hi,

I am using stm32f103c8t6 connected to a rotary encoder using SPL. I was planning to use TIMER 1 in encoder mode, but probably I had made a mistake by connecting channel A of encoder to PB13 (T1C1N) and channel B to PB14(T1C2N) - this setup doesnt work at all.

So, is it possible that TIM1 can decode encoder signals in this configuration or the only solution is to re-route the encoder signals to PA8 & PA9 pins of the µC?

I also tried using STM32Cube just to cross check my assumption and there also it seems that I can't use PB13 & PB14 in encoder interface mode. I have checked the encoder signals with a scope and they look clean and sharp and the same encoder works well with TIM2 and TIM4.

Kindly help with suggestions and solutions

Regards

Vin

[waclawek.jan · Accepted solution]

> So, is it possible...

No.

The complementary pins (i.e. TIMx_CHyN) are outputs only.

JW

[Vin1947]

Thank you waclawek.jan ! I think I should start re-routing the tracks as well as my foolishness:grinning_face_with_sweat: