I am developing a project in MCUXpresso for the FRDM-MKL82Z board with the SDK for that board from NXP. There is an 'lpuart_interrupt' example project included in the SDK that I am using as a reference to use UART with the interrupt functionality. I did some messing around with the example and everything worked fine. Then, I went to create a new project through the new project wizard, which is a C++ project rather than C. I copied and pasted the contents of the main source file from the example into my main source file generated from the project wizard, so those files are identical. However, at first UART would not work. I realized what I had done wrong when noticing that the 'pin_mux.c' file was missing the UART pin configuration in the function 'BOARD_InitPins(void)'. I added the parts that I was missing to the 'pin_mux.c' file in my own project and only part of the program will work. It seems like TX works (through the function 'LPUART_WriteByte()') but every time data is sent to the RX pin it goes into hard fault (I figured out though the debugger). It has something to do with the LPUART_EnableInterrupts() function because the hard fault does not happen until after this is done. I assume there are some things in the drivers, board, device, or component folders that I need to change to make it work properly, but after comparing each file with the ones from the example project I cannot figure out what changes to make to make my program work.
Has anybody else experienced this kind of issue or know how to get the LPUART interrupt to work without going into hardfault?
Thanks!
