Dear @lmst-mcu ,
From the MCX A153 Reference Manual 22.6.3.1, we can find that FIRC normal configuration write 0 to FIRCCSR[LK] to unlock FIRCCSR.
And I find that in my MCXA153 SDK 2.16 configuration, the register in fsl_clock.c has been successfully unlocked.
Could you please tell me where the problem lies in your case?
Best Regard
Liu
Hi. @Alphabert_Liu
Thank you for the response.
Here is a screenshot of my file contents (full file attached), it seems that the LK bit is not cleared in this function.
Hello @lmst-mcu ,
In my understanding, the default value of the LK bit is 0, and in the following code, the LK bit of this register is also set to 0.
/* Set trim mode. */
SCG0->FIRCCSR = (uint32_t)config.trimMode;You can connect your development board and debug the demo from the SDK you are using. In the debug process, navigate to the FIRCCSR register located within SCG0 in the "Perapherals+" column value of the bit you are interested in.
Best Regard
Liu
