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# async-stm32f1xx
Abstractions for asynchronous programming on the STM32F1xx family of microcontrollers.
This project provides [`futures-rs`](https://github.com/rust-lang/futures-rs)-based abstractions for asynchronous programming with peripherals from [`stm32f1xx-hal`](https://github.com/stm32-rs/stm32f1xx-hal).
It started as an effort to port the [examples from `async-on-embedded`](https://github.com/rust-embedded-community/async-on-embedded/tree/master/nrf52/examples) to the [Blue Pill (`STM32F103C8T6`)](https://stm32-base.org/boards/STM32F103C8T6-Blue-Pill.html) as part of a bachelor's thesis.
The library is independent of any particular executor, but the [examples](examples) use the [`async-embedded`](https://github.com/rust-embedded-community/async-on-embedded/tree/master/async-embedded) runtime.
## Requirements
Your `rustc` needs to include [rust-lang/rust#69033](https://github.com/rust-lang/rust/pull/69033), so you need at least Rust `nightly-2020-03-22` or Rust 1.44.
Your Rust toolchain needs to support the `thumbv7m-none-eabi` target:
```
$ rustup target add thumbv7m-none-eabi
```
## [Examples](examples)
Most of `async-on-embedded`'s examples have been successfully ported to this project.
### Requirements
* [OpenOCD](http://openocd.org/).
* [`arm-none-eabi-gdb`](https://www.gnu.org/software/gdb/)
### Adjusting to your hardware
The [memory region information](memory.x) included in this repository matches the Blue Pill (`STM32F103C8T6`).
You may need to adjust it according to your hardware.
For more information see [`cortex-m-quickstart`](https://github.com/rust-embedded/cortex-m-quickstart).
### Starting the GDB Server
Start OpenOCD by replacing `$INTERFACE` with your debug probe (e.g. `stlink-v2.cfg`) and running:
```
$ openocd -f interface/$INTERFACE.cfg -f target/stm32f1x.cfg
```
### Running
You can now run the example via GDB:
```
$ cargo run --example <NAME> [--release]
```
## License
This project is licensed under either of
* [Apache License, Version 2.0](https://www.apache.org/licenses/LICENSE-2.0) ([LICENSE-APACHE](LICENSE-APACHE))
* [MIT License](https://opensource.org/licenses/MIT) ([LICENSE-MIT](LICENSE-MIT))
at your option.
## Contributing
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in `async-stm32f1xx` by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.