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remote::{Characteristic, CharacteristicWriteRequest}, + }, +}; +use futures_lite::StreamExt; +use tokio::time::timeout; + +const ADDRESS: &str = "B2:E5:7C:A7:A6:23"; +const CHAR_UUID: &str = "0000fa02-0000-1000-8000-00805f9b34fb"; + +pub struct LEDDevice { + pub width: u8, + pub height: u8, + pub address: Address, + pub device: Device, + pub characterstic: Characteristic, +} + +#[derive(Copy, Clone)] +pub struct Position(pub u8, pub u8); +#[derive(Eq, Hash, PartialEq, Copy, Clone)] +pub struct RGB(pub u8, pub u8, pub u8); + +pub struct Pixel { + pub position: Position, + pub color: RGB, +} +pub struct PixelCluster { + pub positions: Vec, + pub color: RGB, +} + +pub trait PixelToByte { + type Output; + fn to_byte(&self) -> Self::Output; +} +impl PixelToByte for Pixel { + type Output = Vec; + + fn to_byte(&self) -> Self::Output { + let rgb = &self.color; + let pos = &self.position; + vec![ + 0x0a, 0x00, 0x05, 0x01, 0x00, rgb.0, rgb.1, rgb.2, pos.0, pos.1, + ] + } +} +impl PixelToByte for PixelCluster { + type Output = Vec>; + fn to_byte(&self) -> Vec> { + let color = &self.color; + let chunks = self.positions.as_chunks::<120>(); + + let mut buf = Vec::with_capacity(chunks.0.len() + 1); + + let mut push_chunk = |positions: &[Position]| { + if positions.is_empty() { + return; + } + + let payload_len = positions.len() * 2; + let total = 8 + payload_len; + let mut out = Vec::with_capacity(total); + + out.extend_from_slice(&[total as u8, 0, 5, 1, 0, color.0, color.1, color.2]); + + for p in positions { + out.push(p.0); + out.push(p.1); + } + buf.push(out); + }; + + for c in chunks.0 { + push_chunk(c); + } + push_chunk(chunks.1); + + buf + } +} + +pub trait PixelsToCluster { + fn to_cluster(&self) -> Vec; +} +impl PixelsToCluster for Vec { + fn to_cluster(&self) -> Vec { + let mut map: HashMap> = HashMap::new(); + for px in self { + map.entry(px.color).or_default().push(px.position); + } + map.into_iter() + .map(|(color, positions)| PixelCluster { + positions: positions, + color, + }) + .collect() + } +} +impl LEDDevice { + pub async fn new( + width: u8, + height: u8, + addr: Address, + adapter: Adapter, + ) -> bluer::Result { + adapter.set_powered(true).await?; + + adapter + .set_discovery_filter(DiscoveryFilter { + pattern: Some(addr.to_string()), + ..Default::default() + }) + .await?; + + let mut discover = adapter.discover_devices().await?; + + let device = loop { + match timeout(Duration::from_secs(10), discover.next()).await { + Ok(Some(bluer::AdapterEvent::DeviceAdded(a))) if a == addr => { + break adapter.device(addr)?; + } + Ok(Some(_)) => continue, + Ok(None) | Err(_) => { + return Err(bluer::Error { + kind: bluer::ErrorKind::DoesNotExist, + message: "device not found".to_string(), + }); + } + } + }; + + device.connect().await?; + let uuid = Uuid::from_str(CHAR_UUID).unwrap(); + + let chr = 'outer: { + for svc in device.services().await? { + for ch in svc.characteristics().await? { + if ch.uuid().await? == uuid { + break 'outer ch; + } + } + } + + panic!("characteristic {} not found on peripheral", uuid); + }; + + Ok(LEDDevice { + width: width, + height: height, + address: addr, + device: device, + characterstic: chr, + }) + } + + async fn write_data(&self, data: &[u8]) -> bluer::Result<()> { + let chr = &self.characterstic; + + chr.write_ext( + data, + &CharacteristicWriteRequest { + op_type: WriteOp::Request, + ..Default::default() + }, + ) + .await?; + + Ok(()) + } + pub async fn write_pixel(&self, pixel: &Pixel) -> bluer::Result<()> { + self.write_data(&pixel.to_byte()).await + } + pub async fn write_pixelcluster(&self, pixelcluster: &PixelCluster) -> bluer::Result<()> { + for data in pixelcluster.to_byte() { + self.write_data(&data).await?; + } + + Ok(()) + } + pub async fn write_pixelclusters(&self, pixelclusters: &[PixelCluster]) -> bluer::Result<()> { + for cluster in pixelclusters { + self.write_pixelcluster(cluster).await?; + } + + Ok(()) + } +} diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..8ddfba5 --- /dev/null +++ b/src/main.rs @@ -0,0 +1,42 @@ +mod led; + +use led::{LEDDevice, Pixel, PixelsToCluster, RGB}; + +use std::str::FromStr; + +use bluer::Address; + +const ADDRESS: &str = "B2:E5:7C:A7:A6:23"; + +#[tokio::main(flavor = "current_thread")] +async fn main() -> bluer::Result<()> { + let session = bluer::Session::new().await?; + let adapter = session.default_adapter().await?; + + let addr = Address::from_str(ADDRESS)?; + let led = LEDDevice::new(64, 16, addr, adapter).await?; + + let device = &led.device; + println!( + "{:?}: {:?}", + device.name().await?.unwrap(), + device.is_connected().await? + ); + + let mut pixels: Vec = vec![]; + for i in 0..(led.width as usize * led.height as usize) { + let rng: u8 = rand::random(); + pixels.push(Pixel { + position: led::Position( + (i % led.width as usize) as u8, + (i / led.width as usize) as u8, + ), + // color: RGB(255, 255, 255), + color: RGB(rng, rng % 128, rng / 2), + }); + } + + led.write_pixelclusters(&pixels.to_cluster()).await?; + + Ok(()) +}