The PureThermal 1 is an embedded development platform for the FLIR Lepton thermal imager, created by GroupGets Labs. It is based around the STM32F4, a powerful ARM Cortex-M MCU by ST Microelectronics, and its various IO capabilities and open source firmware to make it easy integrate a FLIR Lepton into any environment.

It is intended that you use this firmware as a starting point for you own applications. For many applications where you wish to process thermal image data on a host PC, you can probably use pre-built binaries of this firmware and use as-is. For others, forking this project and making your own modifications to this firmware is encouraged.

This is a Makefile-based project, and we use the GCC ARM Embedded toolchain from https://launchpad.net/gcc-arm-embedded/+download, however, other toolchains that work for the STM32 (such as Mentor's Sourcery toolchain) should also work.

The following are compiler installation instructions for various platforms, required for building the firmware.

sudo add-apt-repository ppa:terry.guo/gcc-arm-embedded
sudo apt-get update
sudo apt-get install gcc-arm-none-eabi

Launchpad has toolchain binaries for OS X. To keep things simple, we'll install then into /usr/local/gcc-arm-none-eabi-*

sudo mkdir -p /usr/local
curl -L https://launchpad.net/gcc-arm-embedded/4.9/4.9-2015-q3-update/+download/gcc-arm-none-eabi-4_9-2015q3-20150921-mac.tar.bz2 -o ~/Downloads/gcc-arm-embedded.tar.bz2
sudo tar xjf ~/Downloads/gcc-arm-embedded.tar.bz2 -C /usr/local && rm ~/Downloads/gcc-arm-embedded.tar.bz2

Then you need to add this location to your path. Add to your .bashrc, or every time you open a new shell and wish to build execute:

export PATH=$PATH:/usr/local/gcc-arm-none-eabi-4_9-2015q3/bin

Toolchain https://launchpad.net/gcc-arm-embedded

Msys http://www.mingw.org/wiki/msys -or- install MINGW with MSYS. http://sourceforge.net/projects/mingw/files/latest/download?source=files

Command Line directions for building and updating the firmware: Install Above software. Add to your path, MSYS /bin and Toolchain arm gcc /bin folders.

git clone https://github.com/groupgets/purethermal1-firmware
cd purethermal1-firmware

If you wish, you can modify Src/project_config.h to customize your build. Then you can simply build:

make

or

make USART_DEBUG=1

To put the device in boot loader mode: Plug in USB Cable Power on device first with ON/OFF button press While holding the BOOT0 button, press the RST button, Release the RST first, then release the BOOT0 button

Install dfu-util:

sudo apt-get install dfu-util

Then run:

dfu-util -a 0 -D main.bin -s 0x08000000

or use:

scripts/flash.sh

Install dfu-util via Homebrew

brew install dfu-util

Then run:

dfu-util -a 0 -D main.bin -s 0x08000000

or use:

scripts/flash.sh

DfuSe USB drivers. http://www.st.com/web/en/catalog/tools/FM147/CL1794/SC961/SS1533/PF257916#

win32 DFU tools https://files.groupgets.com/purethermal/win32_dfu.zip

To unstall DFU drivers, may need to use the device manager to select the st drivers

extract win32_dfu.zip to the current folder.

win32_dfu\bin2dfu --i main.bin --a 0x08000000 --o main.dfu
win32_dfu\DfuSeCommand -c -d --fn main.dfu

or use:

scripts/make_and_flash.bat

Also, see the document GroupGets PureThermal 1 Firmware Installation Guide for Windows OS

Refer to PureThermal 1 development wiki.

This firmware is licensed under The MIT License (MIT), see LICENSE file for details.

Inquiries for support should be directed at this project's maintainers, GroupGets, LLC (GroupGets), and not FLIR Systems, Inc. (FLIR). Additional FLIR-provided source code is being released by GroupGets to this project under the express written consent of FLIR, and covered by the project's license, with the expectation that no warranties or support of any kind will be provided by FLIR.