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May 20, 2025
Question

STM32G4 HRTIM burst mode enable / disable

  • May 20, 2025
  • 1 reply
  • 562 views

In the reference manual for the G474, under HRTIM Burst mode control register (HRTIM_BMCR), bit 31 is the BMSTAT register; it gives the current operating status of the burst mode feature. 

But it states that writing this bit to zero causes early burst mode termination... and I don't think this is actually true. If I try to write to it, it seems to fail and doesn't actually enter burst mode.

 

Does bit zero, BME, control the burst mode CONTROLLER itself, aka, if burst mode entry is possible at all, or is that the actual bit I'm supposed to modify to exit burst mode? 

 

Thank you.

 

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    1 reply

    ST Employee
    May 26, 2025

    Hello, 

    Could you please confirm that the continuous mode is enabled:  BMOM = 1?

    Single shot burst mode may lead to the observed behavior: stopped burst mode when observed by scope, however a one short occurred already.

    BME is needed to enable this mode.

    Best regards.