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SPeir
SPeir
Visitor II
November 6, 2018
Question

Bug in STM32 LL timer library

  • November 6, 2018
  • 1 reply
  • 618 views

I'm seeing a bug in STM32Cube_FW_F1_V1.6.0.

I was using timer 2 in up counting mode with a prescale value of 6399, however the prescale value was not being used. After stepping through the code I noticed a bug in the LL_TIM functions.

The LL_TIM_DisableUpdateEvent function is supposed to SET bit UDIS in the CR1 register to disable UEV. Likewise, the LL_TIM_EnableUpdateEvent function is supposed to CLEAR bit UDIS in the CR1 register to enable UEV.

This is swapped in version 1.6.0. I tried using LL_TIM_DisableUpdateEvent instead of Enable and now it works.

This topic has been closed for replies.

1 reply

Imen.D
ST Technical Moderator
November 7, 2018

Hello @SPeir​ ,

 We have already passed this issue along to our development team, and it will be fixed in the next release.

Thank you for your contribution.

Kind Regards,

Imen.

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