AnsweredAssumed Answered

How to use the Frequency Meter in the MPC5645S?

Question asked by Ferenc Kovacs on Jan 5, 2018
Latest reply on Jan 30, 2018 by Ferenc Kovacs

Hello all,

 

I would like to measure the frequency of the SXOSC. For this, I would like to use the CMU (Clock Monitor Unit). 

My problem is that I cannot write to the appropriate registers. 

- The processor is in DRUN mode.

- There is no active write protection for the CMU registers. 

- The system clock is the FXOSC. 

- FXOSC, SXOSC are enabled. 

 

Any idea what could cause the problem?

 

Thank you!

 

János Murai

Outcomes