Dear Federico,
just to make sure your board and connection is okay, you can follow these steps to make it working:
- Visit https://mcuxpresso.nxp.com/ and get the SDK package version 2.10 built for FRDM-K22F.
- Don't forget to include the FreeMASTER middleware in the package and also select your favourite toolchain.
- Download and unzip the SDK package. In case of MCUXpresso IDE, import the SDK package to the IDE.
- Import the boards/frdmk22f/freemaster_examples/fmstr_uart demo project into your IDE.
- Build and run on board.
- Connect with FreeMASTER and run the "Connection Wizard" available at the welcome page.
- Select serial communication and scan the COM ports of your PC. The board should be detected.
- Open the "FreeMASTER Demonstration Project".
The screenshots should give you some guidance. If you have any more specific issue, please describe your setup.
MichalH_0-1634628677398.png
MichalH_1-1634628733568.png
MichalH_2-1634628760337.png
MichalH_3-1634628778650.png
MichalH_4-1634628807294.png
MichalH_5-1634628846141.png