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Getting an interrupt at specific encoder value

Question asked by Krix N on Jul 31, 2017
Latest reply on Aug 3, 2017 by waclawek.jan

Beginner working with STM32L452:


I have TIM2 set up as encoder-based timer. Works perfect.

Now I want an interrupt whenever the TIM2 reaches a certain value (position).

I tried to enable timer interrupt through HAL_TIM_Encoder_Start_IT, and hoped to be able to get an interrupt when the encoder passed value 0. But I only managed to get an interrupt on every single encoder tick.


Reading a bit more on timers, i wonder if setting up another timer as slave to TIM2 would be the way forward ?

If yes, then how should the master/slave output/input be configured to have the slave follow TIM2 ? I have read the timer overview in "en.DM00042534.pdf" but I don't understand all of it.

if no, what are my options then?


If a solution can be achieved through CubeMX configurator, i I would very much appreciate that, but it is not a must.