Sample rust applications for the low cost black pill board.

I am not a Rust expert (yet :) ), so that this repo contains my first attempts to run Rust code on the WeAct 3.0 low-cost STM32F4 black pill board. The board comes in a wide variety. Mine has an STM32F401CEU6 MCU. There are similar repos out there, so I aligned some of them to this board (i.e. different LED and switch locations) to have everything ootb working.

Prepare:

• You need Rust nightly: rustup default nightly
• You need Rust objcopy to strip ELFs into raw binaries: cargo install cargo-binutils
• You need DFU utils to upload the binaries using the pre-programmed bootloader on this board (can be found in platform.io utils)

Build:

• You can directly build the raw binary files using their target name in the Cargo.toml, like: cargo objcopy --bin button_led_blink --release -- -O binary button_led_blink

Install:

• Put your board into DFU bootloader mode, if available
• Use dfu-util to upload the raw binary: "~/.platformio/packages/tool-dfuutil/bin/dfu-util" -d 0x0483:0xDF11 -a 0 -s 0x08000000:leave -D ./button_led_blink

Ref:

• Board docs

Contribution: Feel free to contribute any missing instruction, fix or new sample for this board.