Ever wish you could program your STM32-based project anywhere, at any time? Well, have I ever got the solution for you!
A Raspberry Pi can be used as a bridge between a local STM32 and a remote client for debugging:
If the client is using an IDE (such as ST’s STM32CubeIDE), a debugging configuration can be set up such that all of the built in tools (uploading, breakpoints, reading registers, etc) are fully functional, as if the ST-Link was connected to your computer.
Otherwise, the Raspberry Pi is running a GDB server, so a remote connection could be made via arm-none-eabi-gdb.
It also contains a UART proxy for serial debugging, using the built-in USART interface on the ST-Link and ser2net to bridge the gap from Raspberry Pi to local telnet console.
The server automatically starts and stops when a ST-Link device is plugged in or removed through udev rules.
The server itself is part of the stlink suite of tools.
Configuration and installation scripts can be found on GitHub.