medius 1.4.0

Host control library for the medius transparent mouse passthrough box
Documentation 
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/// `MOVE` (§3.1): `[dx i16 LE][dy i16 LE]`, no clamp (firmware clamps with carry).
pub fn move_payload(dx: i16, dy: i16) -> [u8; 4] {
    let dx = dx.to_le_bytes();
    let dy = dy.to_le_bytes();
    [dx[0], dx[1], dy[0], dy[1]]
}

/// `WHEEL` (§3.2): `[delta i16 LE]`, no clamp (firmware paces across frames with carry).
pub fn wheel_payload(delta: i16) -> [u8; 2] {
    delta.to_le_bytes()
}

/// `BUTTON` (§3.3): `[id u8][action u8]` — id 0..=4, action 0 soft-release / 1 press / 2 force-release.
pub fn button_payload(id: u8, action: u8) -> [u8; 2] {
    [id, action]
}

/// `QUERY` (§3.5): `[what u8]` — 0 = VERSION, 1 = HEALTH.
pub fn query_payload(what: u8) -> [u8; 1] {
    [what]
}