The project attached is a simple bare metal project for the FRDM-KL25 using the new Kinetis Design Studio. All the information about KDS can be found in:
The project configures the board to run in PEE mode at 48 MHz. UART0, which is connected to the SDA virtual serial port, is used in Interrupt mode.
The application echoes what is written in the terminal and when the letter r, g or b is entered the RGBleds change respectively (red, green or blue).
I hope this project can be useful.
Original Attachment has been moved to: FRDM-KL25-Hello_Wolrd.zip