I have a custom board based on the K60F120M tower board, which has an clock generator on XTAL0/EXTAL0, and a crystal on XTAL1/EXTAL1. I left off the external clock, and have only the crystal, but unfortunately I left it on XTAL1/EXTAL1, and now it seems like that won't work.
But when I change to use XTAL0/EXTAL0, the basic tower board demo projects don't run anyway.
1. Is it possible to run the device off a crystal on XTAL1/EXTAL1 pins only? From reviewing the reference manual, it looks like XTAL1/EXTAL1 can only drive some peripherals, and not all internal clocks. Is this right?
2. Assuming I move the crystal to the XTAL0/EXTAL0 pins, is there some clock configuration change I need to make to work off the crystal as opposed to a clock input? I noticed some settings such as gain, etc., but I tried various things and couldn't get it starting. It stalls in __pe_initialize_hardware of bsp_cm.c in a while loop waiting for a required clock condition.