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[ClockUtils] Fixed getAPBFrequency

Emilio Corigliano requested to merge ClockUtils-fix into main

This is a merge request for a clear branch for the fixes object of this closed merge request. The following description is the same of the linked merge request.

Fixes applied:

  • Created two different functions: one for retrieving the clock frequency of timers on a particular APB, the other for peripherals.
  • Fixed the disabling of TIM3 clock

Explaination of the bug found in getAPBFrequency: Checking the ClockUtils framework we found out that the frequency returned by the getAPBFrequency method was relative to the timers branch, that includes also a multiplier by 2 if the prescaler on the relative APB is active. Threads regarding the previous wrong usages of getAPBFrequency have been opened and these are substituted with the pre-compatible getAPBFrequencyTimers function. They must be changed in order to use the correct method. image

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