me and my team are having problems setting the clock from the default mode to 48 Mhz using the external crystal that the the board comes with.
I saw that there is a clock set up routine in the start up code (system_MKL25Z4.c and system_MKL25Z4.h) already given and that a routine will be executed based on the definition of CLOCK_SETUP which is not defined by default. So I just defined CLOCK_SETUP as 2 in order to go into PEE mode and have a clock frequency of 48 Mhz. However, when I run the code, reset mode is entered.
So how can I make the system set up to run with 48 Mhz clock frequency?
Any help here is appreciated! Thank you very much.