Marcelo,
I have the some problem while trying to use the AsynchroSerial component with my FRDM-KL25Z.
I decided to download the standalone Processor Expert v10.3, installed it and added the AsynchroSerial component to my project. While inspecting the autogenerated source files, I noticed that a different function is being called to set the UART0 clock source:
UART0_PDD_SetClockSource(UART0_BASE_PTR, UART0_PDD_PLL_FLL_CLOCK);
instead of
SIM_PDD_SetClockSourceUART0(SIM_BASE_PTR, SIM_PDD_PLL_FLL_CLOCK);
I replaced the function call in KDS, and the project now compiles, still have to check if the UART is working properly.
This is only a workaround, because the incorrect function will be there again once you autogenerate sources, but it's better than nothing.
Let's hope Erich finds a better one.
Ronaldo