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?