This is an unofficial Board Support Crate (BSC) for using the STMicroelectronics B-L072Z-LRWAN1 Discovery with the Rust programming language.
It is currently in its early stages. Documentation is sparse and features are basic. Pull requests welcome!
The easiest way to flash code to the LoRa Discovery board is to use the on-board ST-Link and OpenOCD
Compiling the most recent version of OpenOCD is helpful, as support for this part has improved and most distributions provide a rather old version of OpenOCD.
To start the debug server, from this project directory, do:
openocd -f ./openocd.cfg
If you have a preference for JLink, you can actually turn the ST-Link into a JLink debugger.
Download the JLink server utility if you don't have it.
To run JLink server:
JLinkGDBServer -device STM32L072CZ -speed 4000 -if swd -AutoConnect -1 -port 3333
Open .cargo/config and uncomment the runner that matches your preferred configuration (comment all other ones). Then you can flash an example program like this:
cargo run --example longfi