Added library crate to interface with headset.

src/lib.rs

@@ -0,0 +1,53 @@
+use hidapi::{HidApi, HidDevice, HidError};
+use thiserror::Error;
+
+// Possible vendor IDs [hyperx , HP]
+const VENDOR_IDS: [u16; 2] = [0x0951, 0x03F0];
+// Possible Cloud II Wireless product IDs
+const PRODUCT_IDS: [u16; 2] = [0x1718, 0x018B];
+
+const BATTERY_PACKET: [u8; 20] = {
+    let mut packet = [0; 20];
+    (packet[0], packet[1], packet[2], packet[3]) = (0x06, 0xff, 0xbb, 0x02);
+    packet
+};
+
+#[derive(Error, Debug)]
+pub enum DeviceError {
+    #[error("Error: {0}")]
+    HidError(#[from] HidError),
+    #[error("Error: No device found.")]
+    NoDeviceFound(),
+    #[error("Error: No response. Is the headset turned on?")]
+    HeadSetOff(),
+}
+   
+pub struct Device {
+    hid_device: HidDevice,
+}
+
+impl Device {
+    pub fn new() -> Result<Self, DeviceError> {
+        let hid_api = HidApi::new()?;
+        let hid_device = hid_api.device_list().find_map(|info| {
+            if PRODUCT_IDS.contains(&info.product_id()) && VENDOR_IDS.contains(&info.vendor_id()) {
+                Some(hid_api.open(info.vendor_id(), info.product_id()))
+            } else {
+                None
+            }
+        }).ok_or(DeviceError::NoDeviceFound())??;
+        Ok(Device { hid_device })
+    }
+
+    //TODO: implement charging
+    pub fn get_battery_level(&self) -> Result<(u8, bool), DeviceError> {
+        self.hid_device.write(&BATTERY_PACKET)?;
+        let mut buf = [0u8; 8];
+        let res = self.hid_device.read_timeout(&mut buf[..], 1000)?;
+        if res == 0 {
+            return Err(DeviceError::HeadSetOff());
+        }
+        println!("Read: {:?}", &buf[..res]);
+        Ok((buf[7], false))
+    }
+}