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STM32F072 Nucleo-64 - TIM16 problem

Question asked by Juergen Marquardt on Dec 11, 2017
Latest reply on Dec 11, 2017 by waclawek.jan

Trying to use TIM16 of a STM32F072 to generate a (software triggered) one shot high pulse at a GPIO pin.
As there are some screenshots, I have attached a PDF to show the problem.
I do not use any timer hardware beside of ARR and CNT, but get a 40 usec (first) pulse instead of a 200 usec pulse...

Running TIM16 as periodical timer with same initialization, second and all following pulses are 200 usec!?
Any idea?
Best regards Juergen.