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Question

TIM updated callback

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I am using 4 TIMs for updated interrupts functions. in the main while loop, I will call start the timer. and if the timer reaches its full-period and call the callback function. A Flag will be setted in the callback function and print a timeout meassage. The problem I found is the timeout will be triggerred in every powered on. Everytime I click reset MCU, it will first enter the callback function and print the "timeout message". Why this will happen and how to avoid this?

Thanks all in advance!

STM32CubeMX

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ST Employee

Hello @HAL_GET_ANSWER, welcome to ST Community,

The callback is being fired automatically, as a test, you can reset the UIF flag in the SR register before calling the HAL_TIM_Base_Start_IT.

Also, check this gotcha!

I hope that helps!

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ST Employee

Hello again @HAL_GET_ANSWER, any updates on this issue?

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.