Code + designs for an LED sign display board powered by an STM32 and ESP8266. Make sure you clone the submodules.

• board: schematics and PCB layout
• stm: STM32 firmware (drives the display)
• stmboot: STM32 bootloader
• esp: ESP8266 firmware (grabs information from the internet)
• espweb: ESP8266 web-based configuration page source
• cfgserver: Server for shipping unattended config and software updates (without using the webui)
• bmap: Tools for generating graphics resources
• caplog: Tools for debugging
• vendor: Various dependencies in source form (everything not listed below)
• sim: Stubs/shims for running the esp and stm codebases under linux.

• A recent arm-none-eabi-gcc installation (suitably modern to deal with C++20; GCC 14 is what's tested)
• A xtensa-lx106-elf-gcc that can deal with C++20; preferably version 13.2.0 (which was available at one point in debian)
  • A suitable newlib/libstdc++ archive is available in Dockerfile.build
• Python 3 and the packages in requirements.txt
  • If you aren't building the espweb directory you do not require the cryptography package listed
• OpenOCD (for flashing)
  • If you have PlatformIO installed we use its OpenOCD by default, so you may not need to install it system-wide.
• CMake (version 3.13 or later is recommended)
• quilt, to apply the patches in vendor for the ESP8266 SDK

and everything checked out in the vendor directory. The ESP8266 SDK also usually requests you have python (specifically system python, whatever runs from python) installed with it's requirements (vendor/ESP8266_RTOS_SDK/requirements.txt)

A Docker file with these is provided as Dockerfile.build.

For building the espweb you also need:

• yarn
• node

A Docker file with these is also provided as Dockerfile.webbuild