Crate hermes_ble 

hermes-ble

Async Rust library and terminal UI for streaming EEG data from Hermes V1 headsets over Bluetooth Low Energy.

Supported hardware

Model	ADC	EEG channels	IMU	Notes
Hermes V1	ADS1299	8	9-DOF (accel + gyro + mag)	250 Hz EEG, 24-bit resolution

Quick start

use hermes_ble::prelude::*;

#[tokio::main]
async fn main() -> anyhow::Result<()> {
    let client = HermesClient::new(HermesClientConfig::default());
    let (mut rx, handle) = client.connect().await?;
    handle.start().await?;

    while let Some(event) = rx.recv().await {
        match event {
            HermesEvent::Eeg(s) => println!("EEG ch0={:.2} µV", s.channels[0]),
            HermesEvent::Disconnected => break,
            _ => {}
        }
    }
    Ok(())
}

Module overview

Module	Purpose
prelude	One-line glob import of the most commonly needed types
hermes_client	BLE scanning, connecting, and the hermes_client::HermesHandle command API
types	All event and data types produced by the client
protocol	GATT UUIDs, sampling constants, ADS1299 conversion, and command builders
parse	Low-level byte-to-sample decoders for EEG and IMU packets

Modules

hermes_client

BLE scanning, connecting, and the HermesHandle command API for Hermes V1 EEG headsets.

parse

Binary decoders for Hermes V1 BLE notification payloads.

prelude

Convenience re-exports for downstream crates.

protocol

GATT UUIDs, sampling constants, and sensor scaling factors for Hermes V1 EEG headsets.

tui_app

Testable TUI application state and signal simulation.

types

All event and data types produced by the Hermes client.