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How to measure the core operating frequency

Question asked by arbitrer on Feb 9, 2015
Latest reply on Feb 9, 2015 by Clive One
I am using the STM32F429 Discovery board. I followed the tutorial to run the core at specified frequency.

So once I have configured the all the PLL reg vals, How can I check whether the core is running at desired frequency ? (Is it possible to see via some output pin)