# bleak-rs(Derived from [bleasy](https://crates.io/crates/bleasy))
[](https://crates.io/crates/bleak-rs)
[](https://docs.rs/bleak-rs)


High-level BLE communication library for Rust.
The goal of this library is to provide an easy-to-use interface
for communicating with BLE devices, that satisfies most use cases.
## Usage
Here is an example on how to find a device with battery level characteristic and read
a value from that characteristic. For more examples, see the [examples](./examples) directory.
```rust
use bleasy::common::characteristics::BATTERY_LEVEL;
use bleasy::{Error, ScanConfig, Scanner};
use tokio_stream::StreamExt;
#[tokio::main]
async fn main() -> Result<(), Error> {
rsutil::log::Log4rsConfig::default().initialize().unwrap();
// Filter devices that have battery level characteristic
let config = ScanConfig::default()
.with_filters(&vec![
Filter::Characteristic(BATTERY_LEVEL)
])
// .filter_by_characteristics(|uuids| uuids.contains(&BATTERY_LEVEL))
.stop_after_first_match();
// Start scanning for devices
let mut scanner = Scanner::new();
scanner.start(config).await?;
// Take the first discovered device
let device = scanner.device_stream().next().await.unwrap();
// Read the battery level
let battery_level = device.characteristic(BATTERY_LEVEL).await?.unwrap();
println!("Battery level: {:?}", battery_level.read().await?);
Ok(())
}
```
## Background
At the time of writing this, there is only one cross-platform BLE library for Rust, [btleplug](https://github.com/deviceplug/btleplug).
I have been using it for various personal projects for a while, but I found that I would like to have a bit higher-level library that
makes it quick and easy start working with BLE devices, something akin to [bleak](https://github.com/hbldh/bleak) for Python.
As this library in its current state uses btleplug, this can be seen as a sort of conveniency wrapper for it.