This Project is all about building bare-metal firmware for a Cortex-M4 STM32 microcontroller, using open source tools and libraries such as GCC and libopencm3. This starts from blinking an LED, to building a bootloader for performing firmware updates over UART/USB, to building a signed firmware security mechanism that allow only authorised code to run on the device. Stretch goal content includes breaking the security we build, as well as exploring more peripherals, applications, and algorithms in depth.

For running it locally you need to have the following installed and properly setup. Ensure that they are available in your path.

• GNU ARM Embedded tools
• GNU Make

install some extensions to make development smoother

• C/C++
• Cortex-Debug

# Clone the repo
git clone git@github.com:164adityakumar/Firmware-Cortex-M4_STM32.git
cd Firmware-Cortex-M4_STM32

# Initialise the submodules (libopencm3)
git submodule init
git submodule update

# Build libopencm3
cd libopencm3
make
cd ..

# Build the main application firmware
cd app
make