Teensy LC README

This is the README file for NuttX on the PJRC Teensy LC. The Teensy LC is a DIP style breakout board for the MKL25Z64 and comes with a USB based bootloader. Contributed by Michael Hope.

Development Environment

All testing was done with the GNU ARM Embedded 4.9 toolchain on Linux. See https://developer.arm.com/open-source/gnu-toolchain/gnu-rm to download.

Once you've configured and built NuttX, flash the resulting nuttx.hex file to the board using the Teensy Loader Application.

LEDs

The Teensy LC has a single LED. If CONFIG_ARCH_LEDS is defined, then NuttX will update the LED as the board boots. The summary is:

• LED off: board booting
• LED on: initial stack created
• LED flashing: panic.

See include/board.h for details.

Serial Console

The serial console is mapped to UART0 and appears on pins 0 (RX) and 1 (TX). Consider using a 3.3 V USB to serial adapter such as the Sparkfun #9717 FTDI cable.