teensy-lc

This is the NuttX port for the PJRC Teensy LC board. The Teensy LC is a DIP-style breakout board for the MKL25Z64 and includes a USB-based bootloader.

Development Environment

Testing was done with the GNU ARM Embedded 4.9 toolchain on Linux. See https://developer.arm.com/open-source/gnu-toolchain/gnu-rm for toolchain downloads.

Once you have configured and built NuttX, flash the resulting nuttx.hex image to the board with the Teensy Loader application.

LEDs

The Teensy LC provides a single LED. If CONFIG_ARCH_LEDS is enabled, NuttX updates that LED during boot:

• LED off: board booting

• LED on: initial stack created

• LED flashing: panic

See include/board.h for the board-specific definitions.

Serial Console

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