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.