Cannot directly configure register??

[zmEE22]

I am trying to configure UART0 on the MK64FX512VLQ12 mcu, but it keeps hanging when I got to write settings into a register. I use the register naming scheme found in the defs for the chip, but it hangs on the write. When I go into debug and step into it I have no problems and I can see the registers update with the setpoints I wanted.

I zipped up my code and attached it.

Thanks for any help.

[Alessandro Fulignani]

Hi zmEE22,

Did you try to identify which one of the 4 lines code is hanging the software?

Did you turn on the UART0 Clock? Because i don't see it... ( It is SIM_SCGC4 )

Did you try, once in debug mode, to run the code at full speed and see if you get a "stack error" (don't remember the exact name)due to a wrong access to the memory?

Let me know..

Alex

[zmEE22]

Sorry for the late reply, but that was indeed the problem. I did not realize the clock gates are off by default. Enabling them allowed me to configure the registers.

Thank you!