stm32wlxx-hal

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A Hardware abstraction layer for the stm32wl series chips written in rust.

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# stm32wlxx-hal

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Embedded rust HAL (hardware abstraction layer) for the STM32WL series.

This is still in development, the code that exists today covers basic usage of:

* SubGHz LoRa TX + RX
* SubGHz (G)FSK TX + RX
* SPI
* GPIO
* UART
* I2C
* Low-power timers
* ADC
* DAC
* PKA ECDSA signing + verification
* Secure random number generation
* AES ECB encryption + decryption
* RTC date and time

## Usage

```toml
[dependencies.stm32wlxx-hal]
version = "0.6.1"
features = [
    # use exactly one to match your target hardware
    "stm32wl5x_cm0p",
    "stm32wl5x_cm4",
    "stm32wle5",
    # optional: use the cortex-m-rt interrupt interface
    "rt",
    # optional: use defmt
    "defmt",
    # optional: enable conversions with embedded-time types
    "embedded-time",
    # optional: use the real time clock (RTC)
    "chrono",
]
```

## Examples

All examples run on the NUCLEO-WL55JC2.

Most examples are written in the form of on-target tests.  See [testsuite/README.md](https://github.com/stm32-rs/stm32wlxx-hal/blob/main/testsuite/README.md) for details.

There are also simple examples located in the `examples` crate. These can be run with the `run-ex` cargo alias:

```bash
cargo run-ex gpio-blink
```

### System Level Example

The on-target tests and examples are a good starting point, but they demonstrate features independent of each-other. A system-level example using multiple features simultaneously is provided in a separate repo: [stm32wl-lightswitch-demo](https://github.com/newAM/stm32wl-lightswitch-demo)

## Unit Tests

Off-target unit tests use the built-in cargo framework. You must specify the target device as a feature.

```bash
cargo test --features stm32wl5x_cm4
```

## Reference Documentation

* [stm32wl5x reference manual](https://www.st.com/resource/en/reference_manual/rm0453-stm32wl5x-advanced-armbased-32bit-mcus-with-subghz-radio-solution-stmicroelectronics.pdf)
* [stm32wlex reference manual](https://www.st.com/resource/en/reference_manual/rm0461-stm32wlex-advanced-armbased-32bit-mcus-with-subghz-radio-solution-stmicroelectronics.pdf)
* [stm32wl55cc datasheet](https://www.st.com/resource/en/datasheet/stm32wl55cc.pdf)
* [stm32wle5c8 datasheet](https://www.st.com/resource/en/datasheet/stm32wle5c8.pdf)
* [stm32wl55xx stm32wl54xx erratum](https://www.st.com/resource/en/errata_sheet/es0500-stm32wl55xx-stm32wl54xx-device-errata-stmicroelectronics.pdf)
* [stm32wle5xx stm32wle4xx erratum](https://www.st.com/resource/en/errata_sheet/es0506-stm32wle5xx-stm32wle4xx-device-errata-stmicroelectronics.pdf)

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