unleashed-firmware/ReadMe.md

Flipper Zero Firmware

Welcome to Flipper Zero's Firmware repo! Our goal is to create nice and clean code with good documentation, to make it a pleasure for everyone to work with.

Update firmware

Get Latest Firmware from Update Server

Flipper Zero's firmware consists of three components:

• Core2 firmware set - proprietary components by ST: FUS + radio stack. FUS is flashed at factory and you should never update it.
• Core1 Bootloader - controls basic hardware initialization and loads firmware.
• Core1 Firmware - HAL + OS + Drivers + Applications.

All 3 of them must be flashed in order described.

With STLink

Core1 Bootloader + Firmware

Prerequisites:

• Linux / macOS
• Terminal
• arm-gcc-none-eabi
• openocd

One liner: make flash

Core2 flashing procedures

Prerequisites:

• Linux / macOS
• Terminal
• STM32_Programmer_CLI (v2.5.0) added to $PATH

One liner: make flash_radio

With USB DFU

1. Download latest Firmware

2. Reboot Flipper to Bootloader

• Press and hold ← Left + ↩ Back for reset
• Release ↩ Back and keep holding ← Left until blue LED lights up
• Release ← Left

3. Run dfu-util -D full.dfu -a 0

Build with Docker

Prerequisites

1. Install Docker Engine and Docker Compose
2. Prepare the container:

docker-compose up -d

Compile everything

docker-compose exec dev make

Check dist/ for build outputs.

Use flipper-z-{target}-full-{suffix}.dfu to flash your device.

Build on Linux/macOS

macOS Prerequisites

Make sure you have brew and install all the dependencies:

brew bundle --verbose

Linux Prerequisites

gcc-arm-none-eabi

toolchain="gcc-arm-none-eabi-10.3-2021.10"
toolchain_package="$toolchain-$(uname -m)-linux"

wget -P /opt "https://developer.arm.com/-/media/Files/downloads/gnu-rm/10.3-2021.10/$toolchain_package.tar.bz2"

tar xjf /opt/$toolchain_package.tar.bz2 -C /opt
rm /opt/$toolchain_package.tar.bz2

for file in /opt/$toolchain/bin/* ; do ln -s "${file}" "/usr/bin/$(basename ${file})" ; done

Optional dependencies

• openocd (debugging/flashing over SWD)
• heatshrink (compiling image assets)
• clang-format (code formatting)
• dfu-util (flashing over USB DFU)
• protobuf (compiling proto sources)

For example, to install them on Debian, use:

apt update
apt install openocd clang-format-13 dfu-util protobuf-compiler

heatshrink has to be compiled from sources.

Compile everything

make

Check dist/ for build outputs.

Use flipper-z-{target}-full-{suffix}.dfu to flash your device.

Flash everything

Connect your device via ST-Link and run:

make whole

Links

• Discord: flipp.dev/discord
• Website: flipperzero.one
• Kickstarter page: kickstarter.com
• Forum: forum.flipperzero.one

Project structure

• applications - Applications and services used in firmware
• assets - Assets used by applications and services
• bootloader - Bootloader source code
• core - Furi Core: os level primitives and helpers
• debug - Debug tool: GDB-plugins, SVD-file and etc
• docker - Docker image sources (used for firmware build automation)
• documentation - Documentation generation system configs and input files
• firmware - Firmware source code
• lib - Our and 3rd party libraries, drivers and etc...
• make - Make helpers
• scripts - Supplementary scripts and python libraries home

Also pay attention to ReadMe.md files inside of those directories.