feat(host/steam): M1 — byte-exact Deck input serializer, on-box validated
Flesh out inject/proto/steam_proto.rs into the full Steam Deck HID contract, transcribed verbatim from the kernel steam_do_deck_input_event / steam_do_deck_sensors_event and validated field-for-field against kernel 7.0: - SteamState: the u64 button map (bytes 8..16), sticks/triggers/trackpads/IMU stored as raw little-endian report values; serialize_deck_state is a pure, byte-exact memcpy into the 64-byte unnumbered frame. - from_gamepad (XInput frame -> Deck buttons/sticks/triggers) + apply_rich (RichInput touchpad -> right pad, motion -> IMU). - parse_steam_output: the 0xEB ID_TRIGGER_RUMBLE_CMD feedback -> (low, high) for the universal rumble plane. - serial_reply fixed: prepend the report-id-0 byte the kernel strips (steam_recv_report does memcpy(data, buf+1, ...)); M0's reply lacked it, so the kernel fell back to the "XXXXXXXXXX" serial. - SteamModel (Deck now; classic Controller later), command/feature IDs. The spike is repurposed as the M1 validator: it pulses the b9.6 mode-switch to enter gamepad_mode (steam_do_deck_input_event early-returns under the default lizard_mode otherwise), then holds a known test pattern. Reading both evdevs via EVIOCGABS/EVIOCGKEY, every field matched: ABS_X/Y/RX/RY (incl. the kernel Y-negation), both triggers, the touched right-pad HAT1X/Y, the IMU accel/gyro (with ABS_Z/RZ negations), and the 6 expected buttons incl. the L4/R5 grips. 5 unit tests + workspace clippy/fmt/test green. Next: M2 (SteamControllerManager UHID backend + PadBackend wiring). Not pushed — pipeline not yet shippable. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
@@ -1,16 +1,13 @@
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//! M0 recognition spike (THROWAWAY) — `design/steam-controller-deck-support.md` go/no-go gate.
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//! M0/M1 on-box validator (THROWAWAY) — `design/steam-controller-deck-support.md`.
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//!
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//! Opens `/dev/uhid`, creates a virtual `28DE:1205` Steam Deck controller using
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//! [`steam_proto::STEAMDECK_RDESC`], services the kernel handshake (the three event types the
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//! DualSense backend does NOT: `UHID_SET_REPORT` must be answered or `hid-steam` stalls ~5 s/cmd),
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//! answers `steam_get_serial`, heartbeats a neutral Deck report at 125 Hz, and toggles `BTN_A`
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//! every 500 ms so a button event is observable.
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//! Creates a virtual `28DE:1205` Steam Deck via `/dev/uhid`, enters `gamepad_mode` (pulses the
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//! `b9.6` mode-switch bit ~700 ms — `steam_do_deck_input_event` else early-returns under the
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//! default `lizard_mode`), then holds a KNOWN test pattern across every field so an evdev reader can
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//! confirm [`steam_proto::serialize_deck_state`] is byte-exact against the running kernel. Services
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//! the handshake (incl. `UHID_SET_REPORT`, which the DualSense backend omits) and logs any rumble
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//! feedback. Run: `cargo run -p punktfunk-host --bin steam_uhid_spike -- [seconds]`.
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//!
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//! PASS (GO): `dmesg` shows `hid-steam` binding the device; both a gamepad evdev and an IMU evdev
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//! (`INPUT_PROP_ACCELEROMETER`) appear; an evdev reader sees `BTN_A` toggle. Run:
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//! `cargo run -p punktfunk-host --bin steam_uhid_spike -- [seconds]`
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//!
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//! This binary is deleted once M1's `inject/linux/steam_controller.rs` subsumes it.
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//! Deleted once M2's `inject/linux/steam_controller.rs` subsumes it.
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#[cfg(target_os = "linux")]
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#[path = "../inject/proto/steam_proto.rs"]
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@@ -24,12 +21,11 @@ fn main() -> anyhow::Result<()> {
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use std::os::unix::fs::OpenOptionsExt;
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use std::time::{Duration, Instant};
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use steam_proto::{
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serial_reply, serialize_deck_state, SteamState, STEAMDECK_PRODUCT, STEAMDECK_RDESC,
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STEAM_REPORT_LEN, STEAM_VENDOR,
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btn, parse_steam_output, serial_reply, serialize_deck_state, SteamState, STEAMDECK_PRODUCT,
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STEAMDECK_RDESC, STEAM_REPORT_LEN, STEAM_VENDOR,
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};
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// /dev/uhid event ABI (linux/uhid.h): a u32 `type` then a __packed union (largest member is
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// uhid_create2_req). Field offsets below are union-start (event byte 4) + struct offset.
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// /dev/uhid event ABI (linux/uhid.h): u32 `type` then a __packed union (largest = create2_req).
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const EVENT_SIZE: usize = 4 + 4372;
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const UHID_DESTROY: u32 = 1;
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const UHID_START: u32 = 2;
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@@ -45,6 +41,25 @@ fn main() -> anyhow::Result<()> {
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const UHID_SET_REPORT_REPLY: u32 = 14;
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const BUS_USB: u16 = 0x03;
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// The held test pattern (post mode-switch). Chosen to exercise distinct fields with distinct,
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// recognizable values; expected evdev result is asserted by the companion reader.
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fn test_pattern() -> SteamState {
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let mut st = SteamState::neutral();
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st.buttons = btn::A | btn::X | btn::L4 | btn::R5 | btn::VIEW | btn::RB;
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st.lx = 8000;
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st.ly = 4000;
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st.rx = -3000;
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st.ry = 6000;
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st.lt = 20000;
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st.rt = 10000;
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st.press(btn::RPAD_TOUCH, true);
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st.rpad_x = 5000;
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st.rpad_y = -5000;
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st.accel = [1000, 2000, 3000];
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st.gyro = [100, 200, 300];
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st
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}
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let seconds: u64 = std::env::args()
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.nth(1)
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.and_then(|s| s.parse().ok())
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@@ -57,121 +72,98 @@ fn main() -> anyhow::Result<()> {
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.open("/dev/uhid")
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.context("open /dev/uhid (are you in the 'input' group?)")?;
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// --- UHID_CREATE2: identity + report descriptor ---
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let put_cstr = |ev: &mut [u8], off: usize, cap: usize, s: &str| {
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let n = s.len().min(cap - 1);
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ev[off..off + n].copy_from_slice(&s.as_bytes()[..n]);
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};
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let mut ev = vec![0u8; EVENT_SIZE];
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ev[0..4].copy_from_slice(&UHID_CREATE2.to_ne_bytes());
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put_cstr(&mut ev, 4, 128, "Punktfunk Steam Deck (M0 spike)"); // name[128]
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put_cstr(&mut ev, 4, 128, "Punktfunk Steam Deck (spike)"); // name[128]
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put_cstr(&mut ev, 132, 64, "punktfunk/steam/0"); // phys[64]
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put_cstr(&mut ev, 196, 64, "punktfunk-steam-0"); // uniq[64]
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ev[260..262].copy_from_slice(&(STEAMDECK_RDESC.len() as u16).to_ne_bytes()); // rd_size
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ev[262..264].copy_from_slice(&BUS_USB.to_ne_bytes()); // bus
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ev[264..268].copy_from_slice(&STEAM_VENDOR.to_ne_bytes()); // vendor
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ev[268..272].copy_from_slice(&STEAMDECK_PRODUCT.to_ne_bytes()); // product
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ev[272..276].copy_from_slice(&0x0100u32.to_ne_bytes()); // version
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ev[276..280].copy_from_slice(&0u32.to_ne_bytes()); // country
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ev[260..262].copy_from_slice(&(STEAMDECK_RDESC.len() as u16).to_ne_bytes());
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ev[262..264].copy_from_slice(&BUS_USB.to_ne_bytes());
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ev[264..268].copy_from_slice(&STEAM_VENDOR.to_ne_bytes());
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ev[268..272].copy_from_slice(&STEAMDECK_PRODUCT.to_ne_bytes());
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ev[272..276].copy_from_slice(&0x0100u32.to_ne_bytes());
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ev[276..280].copy_from_slice(&0u32.to_ne_bytes());
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ev[280..280 + STEAMDECK_RDESC.len()].copy_from_slice(STEAMDECK_RDESC);
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fd.write_all(&ev).context("write UHID_CREATE2")?;
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eprintln!(
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"UHID_CREATE2 -> 28DE:1205 \"Punktfunk Steam Deck (M0 spike)\", {} byte rdesc; running {seconds}s",
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STEAMDECK_RDESC.len()
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"UHID_CREATE2 -> 28DE:1205; pulsing mode-switch then holding test pattern ({seconds}s)"
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);
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let (mut starts, mut opens, mut gets, mut sets, mut outputs) = (0u32, 0u32, 0u32, 0u32, 0u32);
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let (mut sets, mut gets, mut outputs) = (0u32, 0u32, 0u32);
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let mut seq: u32 = 0;
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let mut a_down = false;
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let start = Instant::now();
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let mut last_hb = start;
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let mut last_toggle = start;
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let mut rbuf = vec![0u8; EVENT_SIZE];
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while start.elapsed() < Duration::from_secs(seconds) {
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// Drain all pending kernel events; reply to the handshake (O_NONBLOCK → WouldBlock = empty).
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while let Ok(n) = fd.read(&mut rbuf) {
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if n < 4 {
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break;
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}
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match u32::from_ne_bytes([rbuf[0], rbuf[1], rbuf[2], rbuf[3]]) {
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UHID_START => {
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starts += 1;
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eprintln!(" <- UHID_START");
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}
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UHID_OPEN => {
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opens += 1;
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eprintln!(" <- UHID_OPEN (a consumer opened the evdev/hidraw)");
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}
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UHID_STOP => eprintln!(" <- UHID_STOP"),
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UHID_CLOSE => eprintln!(" <- UHID_CLOSE"),
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UHID_START | UHID_STOP | UHID_CLOSE => {}
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UHID_OPEN => eprintln!(" <- UHID_OPEN (consumer opened the evdev/hidraw)"),
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UHID_OUTPUT => {
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outputs += 1;
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let sz = u16::from_ne_bytes([rbuf[4100], rbuf[4101]]) as usize;
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eprintln!(
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" <- UHID_OUTPUT ({sz} bytes, head={:02X?})",
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&rbuf[4..4 + sz.min(8)]
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);
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if let Some(rb) = parse_steam_output(&rbuf[4..4 + sz.min(64)]).rumble {
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eprintln!(" <- rumble (OUTPUT): {rb:?}");
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}
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}
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UHID_GET_REPORT => {
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gets += 1;
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let id = u32::from_ne_bytes([rbuf[4], rbuf[5], rbuf[6], rbuf[7]]);
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let rnum = rbuf[8];
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let reply = serial_reply("PUNKTFUNK01");
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let mut out = vec![0u8; EVENT_SIZE];
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out[0..4].copy_from_slice(&UHID_GET_REPORT_REPLY.to_ne_bytes());
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out[4..8].copy_from_slice(&id.to_ne_bytes()); // id
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out[8..10].copy_from_slice(&0u16.to_ne_bytes()); // err = 0
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out[10..12].copy_from_slice(&(reply.len() as u16).to_ne_bytes()); // size
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out[4..8].copy_from_slice(&id.to_ne_bytes());
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out[8..10].copy_from_slice(&0u16.to_ne_bytes()); // err 0
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out[10..12].copy_from_slice(&(reply.len() as u16).to_ne_bytes());
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out[12..12 + reply.len()].copy_from_slice(&reply);
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fd.write_all(&out).context("write GET_REPORT_REPLY")?;
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eprintln!(" <- UHID_GET_REPORT (rnum={rnum}) -> replied serial");
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fd.write_all(&out).context("GET_REPORT_REPLY")?;
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}
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UHID_SET_REPORT => {
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sets += 1;
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let id = u32::from_ne_bytes([rbuf[4], rbuf[5], rbuf[6], rbuf[7]]);
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let rnum = rbuf[8];
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let cmd = rbuf[12]; // data[0] = the Steam command id
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// data starts at ev[12]: [report-id 0, cmd, …] — surface rumble if present.
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if let Some(rb) =
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parse_steam_output(&rbuf[12..12 + 16.min(EVENT_SIZE - 12)]).rumble
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{
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eprintln!(" <- rumble (SET_REPORT): {rb:?}");
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}
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let mut out = vec![0u8; EVENT_SIZE];
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out[0..4].copy_from_slice(&UHID_SET_REPORT_REPLY.to_ne_bytes());
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out[4..8].copy_from_slice(&id.to_ne_bytes()); // id
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out[8..10].copy_from_slice(&0u16.to_ne_bytes()); // err = 0 (ack)
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fd.write_all(&out).context("write SET_REPORT_REPLY")?;
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eprintln!(" <- UHID_SET_REPORT (rnum={rnum}, cmd=0x{cmd:02X}) -> ack err=0");
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out[4..8].copy_from_slice(&id.to_ne_bytes());
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out[8..10].copy_from_slice(&0u16.to_ne_bytes()); // err 0
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fd.write_all(&out).context("SET_REPORT_REPLY")?;
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}
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other => eprintln!(" <- UHID event type {other}"),
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}
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}
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// Heartbeat the current state at ~125 Hz (a real Deck streams continuously; silence reads
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// as an unplug to the kernel/SDL).
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if last_hb.elapsed() >= Duration::from_millis(8) {
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last_hb = Instant::now();
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seq = seq.wrapping_add(1);
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let mut st = SteamState::neutral();
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if a_down {
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// M0 parse-path probe: mash every button byte so SOME BTN_* fires regardless of the
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// exact (M1-confirmed) per-bit mapping — proves hid-steam parses our state reports.
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st.b8 = 0xFF;
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st.b9 = 0xFF;
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st.b10 = 0xFF;
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st.b13 = 0xFF;
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st.b14 = 0xFF;
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}
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// First ~700 ms: hold the mode-switch bit (b9.6) to toggle gamepad_mode on. After that:
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// the held test pattern (which must NOT contain b9.6, or it would toggle back).
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let st = if start.elapsed() < Duration::from_millis(700) {
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let mut s = SteamState::neutral();
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s.press(btn::STEAM_MENU_RIGHT, true);
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s
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} else {
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test_pattern()
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};
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let mut r = [0u8; STEAM_REPORT_LEN];
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serialize_deck_state(&mut r, &st, seq);
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let mut out = vec![0u8; EVENT_SIZE];
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out[0..4].copy_from_slice(&UHID_INPUT2.to_ne_bytes());
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out[4..6].copy_from_slice(&(r.len() as u16).to_ne_bytes()); // input2.size
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out[6..6 + r.len()].copy_from_slice(&r); // input2.data
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fd.write_all(&out).context("write UHID_INPUT2")?;
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}
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// Toggle BTN_A every 500 ms so an evdev reader sees a key event.
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if last_toggle.elapsed() >= Duration::from_millis(500) {
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last_toggle = Instant::now();
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a_down = !a_down;
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eprintln!("BTN_A -> {}", if a_down { "DOWN" } else { "UP" });
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out[4..6].copy_from_slice(&(r.len() as u16).to_ne_bytes());
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out[6..6 + r.len()].copy_from_slice(&r);
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fd.write_all(&out).context("UHID_INPUT2")?;
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}
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std::thread::sleep(Duration::from_millis(1));
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@@ -180,9 +172,7 @@ fn main() -> anyhow::Result<()> {
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let mut out = vec![0u8; EVENT_SIZE];
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out[0..4].copy_from_slice(&UHID_DESTROY.to_ne_bytes());
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let _ = fd.write_all(&out);
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eprintln!(
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"UHID_DESTROY. handshake counts: START={starts} OPEN={opens} GET_REPORT={gets} SET_REPORT={sets} OUTPUT={outputs}"
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);
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eprintln!("UHID_DESTROY. handshake: GET_REPORT={gets} SET_REPORT={sets} OUTPUT={outputs}");
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Ok(())
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}
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@@ -1,31 +1,33 @@
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//! Transport-independent Steam Controller / Steam Deck HID contract — the Steam analogue of
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//! [`super::dualsense_proto`]. Descriptor, command/feature IDs, the serial GET_REPORT reply, and
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//! the input-report serializer that the kernel `hid-steam` driver parses.
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//! [`super::dualsense_proto`]. The report descriptor, the command/feature IDs, the byte-exact
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//! Deck input-report serializer, the `XInput`/rich-input → state mappers, and the rumble-feedback
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//! parser. Pure logic, shared by the Linux UHID backend and (later) a Windows UMDF backend.
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//!
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//! **M0 scope (recognition spike):** only what is needed for `hid-steam` to bind a `/dev/uhid`
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//! `28DE:1205` device and create its evdevs —
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//! * [`STEAMDECK_RDESC`]: a vendor collection with ≥1 **feature** report, which is the *sole*
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//! thing `steam_is_valve_interface()` checks (`!list_empty(&FEATURE.report_list)`);
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//! * [`serial_reply`]: the `steam_get_serial()` answer `[0xAE, len, 0x01, ascii…]` (a bad/absent
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//! reply is non-fatal — the kernel falls back to `"XXXXXXXXXX"` — but a valid one keeps probe
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//! instant);
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//! * [`serialize_deck_state`]: a neutral Deck state report whose header (`[0x01,0x00,0x09,len]`)
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//! `hid-steam` accepts and parses (the M0 spike proved 23 distinct `BTN_*` codes reach the
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//! evdev). The exact per-bit button offsets below are PROVISIONAL — M1 confirms them
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//! line-by-line against the lab kernel's `steam_do_deck_input_event` (the v6.12-sourced
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//! `byte 8 bit 7 = BTN_A` did NOT match on the 7.0 box).
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//! **Layout source of truth:** the kernel `drivers/hid/hid-steam.c` `steam_do_deck_input_event`
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//! (+ `steam_do_deck_sensors_event`) — every offset/bit/sign below is transcribed verbatim from
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//! it and on-box-validated against kernel 7.0 (see `design/steam-controller-deck-support.md`).
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//! M0 proved the device binds + parses; M1 (here) makes the serializer byte-exact.
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//!
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//! The **full** field layout (sticks, triggers, both trackpads, the IMU, all four back grips, the
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//! `0xEB`/`0x8F` feedback reports) lands in M1, line-checked against the lab kernel's
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//! `steam_do_deck_input_event` / `steam_haptic_rumble` — see `design/steam-controller-deck-support.md`.
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#![allow(dead_code)] // M0: the full state model + the PadBackend wiring arrive in M1.
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//! Three load-bearing details the DualSense path does NOT have:
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//! * **report id 0 / unnumbered**: input reports are the raw 64 bytes starting `[0x01,0x00,0x09]`
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//! (no report-id prefix); FEATURE get/set reports DO carry a leading `0x00` report-id byte
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//! (`steam_send_report` does `memcpy(buf+1, cmd, …)`, `steam_recv_report` strips `buf[0]`).
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//! * **`gamepad_mode` gate**: `steam_do_deck_input_event` early-returns when
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//! `!gamepad_mode && lizard_mode` (the module param, default on). `gamepad_mode` starts false
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//! and TOGGLES when [`btn::STEAM_MENU_RIGHT`] (`b9.6`, the mode-switch) is held ~450 ms while
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//! no hidraw client is open. The backend enters gamepad mode at session start (pulse that bit,
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//! or load `hid_steam lizard_mode=0`) — see the backend, not this module.
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//! * **the `UHID_SET_REPORT` handshake** must be answered (DualSense omits it).
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#![allow(dead_code)] // Some of the full model is consumed only once the M2 backend + M3 wire land.
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/// Valve. `hid-steam` matches purely by VID/PID over `BUS_USB`
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/// (`HID_USB_DEVICE(0x28DE, 0x1205, STEAM_QUIRK_DECK)`), so a UHID device with these IDs binds.
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use punktfunk_core::input::gamepad as gs;
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use punktfunk_core::quic::RichInput;
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/// Valve. `hid-steam` matches purely by VID/PID over `BUS_USB`.
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pub const STEAM_VENDOR: u32 = 0x28DE;
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/// Steam Deck built-in controller (same PID on LCD + OLED).
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pub const STEAMDECK_PRODUCT: u32 = 0x1205;
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/// Classic Steam Controller, wired (report id 1; a later identity behind the same manager).
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||||
/// Classic Steam Controller, wired (report id 1 / `ID_CONTROLLER_STATE`; a later model).
|
||||
pub const STEAMCTRL_WIRED_PRODUCT: u32 = 0x1102;
|
||||
|
||||
/// The Steam HID state/command report is a fixed 64-byte, **unnumbered** (report-id-0) frame.
|
||||
@@ -39,15 +41,35 @@ pub const ID_LOAD_DEFAULT_SETTINGS: u8 = 0x8E;
|
||||
pub const ID_GET_DEVICE_INFO: u8 = 0xA1;
|
||||
pub const ID_GET_STRING_ATTRIBUTE: u8 = 0xAE;
|
||||
pub const ATTRIB_STR_UNIT_SERIAL: u8 = 0x01;
|
||||
/// Host→client feedback: `steam_haptic_rumble` emits report `[0xEB, 9, …]` (FF_RUMBLE → trackpad
|
||||
/// actuators / Deck motors). The Deck's rumble path; the classic SC also has `0x8F` pad pulses.
|
||||
pub const ID_TRIGGER_RUMBLE_CMD: u8 = 0xEB;
|
||||
pub const ID_TRIGGER_HAPTIC_PULSE: u8 = 0x8F;
|
||||
/// Input report message types: SC = `ID_CONTROLLER_STATE`, Deck = `ID_CONTROLLER_DECK_STATE`.
|
||||
pub const ID_CONTROLLER_STATE: u8 = 0x01;
|
||||
pub const ID_CONTROLLER_DECK_STATE: u8 = 0x09;
|
||||
|
||||
/// Which Steam device identity to present. M1 implements the Deck fully; the classic Controller
|
||||
/// (dual trackpads, report id 1, trackpad-only haptics) is a later identity behind the same path.
|
||||
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
|
||||
pub enum SteamModel {
|
||||
Deck,
|
||||
Controller,
|
||||
}
|
||||
|
||||
impl SteamModel {
|
||||
pub fn product(self) -> u32 {
|
||||
match self {
|
||||
SteamModel::Deck => STEAMDECK_PRODUCT,
|
||||
SteamModel::Controller => STEAMCTRL_WIRED_PRODUCT,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// Minimal vendor-defined HID report descriptor: one application collection with a 64-byte input
|
||||
/// report and a 64-byte feature report, both UNNUMBERED (report id 0). `hid-steam` is a raw-event
|
||||
/// driver (`steam_raw_event` consumes reports before HID field parsing), so the field layout is
|
||||
/// cosmetic — but `steam_probe` requires `hid_parse` to succeed AND a non-empty FEATURE report
|
||||
/// list (`steam_is_valve_interface`), so the feature item is mandatory.
|
||||
/// driver, so the field layout is cosmetic — but `steam_probe` requires `hid_parse` to succeed AND
|
||||
/// a non-empty FEATURE report list (`steam_is_valve_interface`), so the feature item is mandatory.
|
||||
#[rustfmt::skip]
|
||||
pub const STEAMDECK_RDESC: &[u8] = &[
|
||||
0x06, 0x00, 0xFF, // Usage Page (Vendor-Defined 0xFF00)
|
||||
@@ -65,25 +87,75 @@ pub const STEAMDECK_RDESC: &[u8] = &[
|
||||
0xC0, // End Collection
|
||||
];
|
||||
|
||||
// PROVISIONAL Deck button bits (from the v6.12 steam_do_deck_input_event listing) — NOT yet
|
||||
// on-box validated: the M0 spike's mash-probe confirmed the report PARSES (the full BTN_* set
|
||||
// fires), but byte 8 bit 7 alone did not produce BTN_A on the 7.0 box, so M1 must line-check the
|
||||
// real per-bit map against the lab kernel before these are trusted.
|
||||
/// `data[8]` bit 7 → (claimed) `BTN_A`.
|
||||
pub const DECK_B8_A: u8 = 0x80;
|
||||
/// `data[9]` bit 5 → (claimed) `BTN_MODE` (the Steam button).
|
||||
pub const DECK_B9_STEAM: u8 = 0x20;
|
||||
/// Deck button bits, indexed in the `u64` packed across report bytes 8..16 — bit `(byte-8)*8 + bit`,
|
||||
/// transcribed verbatim from `steam_do_deck_input_event` (bytes 12 + 15 carry no buttons). Naming
|
||||
/// follows the physical Deck control; the trailing comment is the kernel `BTN_*` it maps to.
|
||||
pub mod btn {
|
||||
// byte 8
|
||||
pub const RT_FULL: u64 = 1 << 0; // BTN_TR2 — right trigger fully pressed
|
||||
pub const LT_FULL: u64 = 1 << 1; // BTN_TL2 — left trigger fully pressed
|
||||
pub const RB: u64 = 1 << 2; // BTN_TR — right shoulder
|
||||
pub const LB: u64 = 1 << 3; // BTN_TL — left shoulder
|
||||
pub const Y: u64 = 1 << 4;
|
||||
pub const B: u64 = 1 << 5;
|
||||
pub const X: u64 = 1 << 6;
|
||||
pub const A: u64 = 1 << 7;
|
||||
// byte 9
|
||||
pub const DPAD_UP: u64 = 1 << 8;
|
||||
pub const DPAD_RIGHT: u64 = 1 << 9;
|
||||
pub const DPAD_LEFT: u64 = 1 << 10;
|
||||
pub const DPAD_DOWN: u64 = 1 << 11;
|
||||
pub const VIEW: u64 = 1 << 12; // BTN_SELECT — "menu left" (View / Back)
|
||||
pub const STEAM: u64 = 1 << 13; // BTN_MODE — Steam logo button
|
||||
pub const MENU: u64 = 1 << 14; // BTN_START — "menu right" (Start / Options)
|
||||
pub const L5: u64 = 1 << 15; // BTN_GRIPL2 — left BOTTOM back grip
|
||||
// byte 10
|
||||
pub const R5: u64 = 1 << 16; // BTN_GRIPR2 — right BOTTOM back grip
|
||||
pub const LPAD_CLICK: u64 = 1 << 17; // BTN_THUMB — left pad pressed (click)
|
||||
pub const RPAD_CLICK: u64 = 1 << 18; // BTN_THUMB2 — right pad pressed (click)
|
||||
pub const LPAD_TOUCH: u64 = 1 << 19; // gates ABS_HAT0 (left pad coords)
|
||||
pub const RPAD_TOUCH: u64 = 1 << 20; // gates ABS_HAT1 (right pad coords)
|
||||
pub const L3: u64 = 1 << 22; // BTN_THUMBL — left joystick click
|
||||
// byte 11
|
||||
pub const R3: u64 = 1 << 26; // BTN_THUMBR — right joystick click
|
||||
// byte 13
|
||||
pub const L4: u64 = 1 << 41; // BTN_GRIPL — left TOP back grip
|
||||
pub const R4: u64 = 1 << 42; // BTN_GRIPR — right TOP back grip
|
||||
pub const LJOY_TOUCH: u64 = 1 << 46;
|
||||
pub const RJOY_TOUCH: u64 = 1 << 47;
|
||||
// byte 14
|
||||
pub const QAM: u64 = 1 << 50; // BTN_BASE — quick-access (…) button
|
||||
/// `b9.6` doubles as the mode-switch: held ~450 ms (no hidraw client) it toggles `gamepad_mode`.
|
||||
pub const STEAM_MENU_RIGHT: u64 = MENU;
|
||||
}
|
||||
|
||||
/// M0 controller state: just the five button bytes the Deck report packs (8, 9, 10, 13, 14). The
|
||||
/// sticks, triggers, trackpads and IMU stay neutral (signed-centred at 0) for the recognition
|
||||
/// spike; M1 fills them from the wire frame + rich-input planes.
|
||||
#[derive(Clone, Copy, Default)]
|
||||
/// Full virtual Steam Deck controller state. All analog fields are stored as the RAW little-endian
|
||||
/// report values the kernel reads (so [`serialize_deck_state`] is a pure memcpy); the kernel applies
|
||||
/// its own sign conventions on top (`ABS_Y = -raw`, etc.) — see [`SteamState::from_gamepad`].
|
||||
#[derive(Clone, Copy, Debug, Default, PartialEq, Eq)]
|
||||
pub struct SteamState {
|
||||
pub b8: u8,
|
||||
pub b9: u8,
|
||||
pub b10: u8,
|
||||
pub b13: u8,
|
||||
pub b14: u8,
|
||||
/// Packed button bits (see [`btn`]); occupies report bytes 8..16.
|
||||
pub buttons: u64,
|
||||
/// Left / right joystick, raw s16 (report 48/50/52/54). The kernel negates the Y axes.
|
||||
pub lx: i16,
|
||||
pub ly: i16,
|
||||
pub rx: i16,
|
||||
pub ry: i16,
|
||||
/// Left / right analog trigger, raw u16 (report 44/46 → ABS_HAT2Y/X).
|
||||
pub lt: u16,
|
||||
pub rt: u16,
|
||||
/// Left / right trackpad position, raw s16, centred 0 (report 16/18/20/22). Only surfaced by
|
||||
/// the kernel while the matching `*PAD_TOUCH` button bit is set.
|
||||
pub lpad_x: i16,
|
||||
pub lpad_y: i16,
|
||||
pub rpad_x: i16,
|
||||
pub rpad_y: i16,
|
||||
pub lpad_pressure: u16,
|
||||
pub rpad_pressure: u16,
|
||||
/// IMU, raw s16. `accel`/`gyro` are `[X, Y, Z]`; the kernel maps them to ABS_X/Z/Y + ABS_RX/RZ/RY
|
||||
/// (with Z/RZ negated) on the separate sensors evdev.
|
||||
pub accel: [i16; 3],
|
||||
pub gyro: [i16; 3],
|
||||
}
|
||||
|
||||
impl SteamState {
|
||||
@@ -91,19 +163,91 @@ impl SteamState {
|
||||
SteamState::default()
|
||||
}
|
||||
|
||||
/// Press/release `BTN_A` (the spike's toggle target).
|
||||
pub fn set_a(&mut self, down: bool) {
|
||||
/// Set/clear a button (or group) by its [`btn`] mask.
|
||||
pub fn press(&mut self, mask: u64, down: bool) {
|
||||
if down {
|
||||
self.b8 |= DECK_B8_A;
|
||||
self.buttons |= mask;
|
||||
} else {
|
||||
self.b8 &= !DECK_B8_A;
|
||||
self.buttons &= !mask;
|
||||
}
|
||||
}
|
||||
|
||||
/// Map an `XInput`/GameStream pad frame (button bitmask + i16 sticks + u8 triggers) into the Deck
|
||||
/// state. Sticks pass through (the kernel negates Y, which yields the conventional direction —
|
||||
/// validated on-box); triggers scale u8 0..255 → u16 0..32640 and set the full-pull bit when
|
||||
/// pressed. Trackpad + motion + the back grips arrive separately ([`apply_rich`], the M3 wire).
|
||||
pub fn from_gamepad(
|
||||
buttons: u32,
|
||||
lx: i16,
|
||||
ly: i16,
|
||||
rx: i16,
|
||||
ry: i16,
|
||||
lt: u8,
|
||||
rt: u8,
|
||||
) -> SteamState {
|
||||
let on = |bit: u32| buttons & bit != 0;
|
||||
let mut s = SteamState {
|
||||
lx,
|
||||
ly,
|
||||
rx,
|
||||
ry,
|
||||
lt: (lt as u16) * 128,
|
||||
rt: (rt as u16) * 128,
|
||||
..SteamState::neutral()
|
||||
};
|
||||
let mut b = 0u64;
|
||||
let set = |b: &mut u64, on: bool, m: u64| {
|
||||
if on {
|
||||
*b |= m;
|
||||
}
|
||||
};
|
||||
set(&mut b, on(gs::BTN_A), btn::A);
|
||||
set(&mut b, on(gs::BTN_B), btn::B);
|
||||
set(&mut b, on(gs::BTN_X), btn::X);
|
||||
set(&mut b, on(gs::BTN_Y), btn::Y);
|
||||
set(&mut b, on(gs::BTN_LB), btn::LB);
|
||||
set(&mut b, on(gs::BTN_RB), btn::RB);
|
||||
set(&mut b, lt > 0, btn::LT_FULL);
|
||||
set(&mut b, rt > 0, btn::RT_FULL);
|
||||
set(&mut b, on(gs::BTN_BACK), btn::VIEW);
|
||||
set(&mut b, on(gs::BTN_START), btn::MENU);
|
||||
set(&mut b, on(gs::BTN_GUIDE), btn::STEAM);
|
||||
set(&mut b, on(gs::BTN_LS_CLICK), btn::L3);
|
||||
set(&mut b, on(gs::BTN_RS_CLICK), btn::R3);
|
||||
set(&mut b, on(gs::BTN_DPAD_UP), btn::DPAD_UP);
|
||||
set(&mut b, on(gs::BTN_DPAD_DOWN), btn::DPAD_DOWN);
|
||||
set(&mut b, on(gs::BTN_DPAD_LEFT), btn::DPAD_LEFT);
|
||||
set(&mut b, on(gs::BTN_DPAD_RIGHT), btn::DPAD_RIGHT);
|
||||
// The DualSense touchpad-click wire bit maps to the Deck's RIGHT pad click (the pad that
|
||||
// stands in for the DualSense touchpad — see apply_rich).
|
||||
set(&mut b, on(gs::BTN_TOUCHPAD), btn::RPAD_CLICK);
|
||||
s.buttons = b;
|
||||
s
|
||||
}
|
||||
|
||||
/// Apply one rich client→host event into this state, preserving everything else. The single-pad
|
||||
/// wire [`RichInput::Touchpad`] maps to the **right** trackpad (the Deck pad analogous to the
|
||||
/// DualSense touchpad); the left pad arrives via the M3 `TouchpadEx` surface. [`RichInput::Motion`]
|
||||
/// passes gyro/accel straight through (raw i16; cross-device unit scaling is M3).
|
||||
pub fn apply_rich(&mut self, rich: RichInput) {
|
||||
match rich {
|
||||
RichInput::Touchpad { active, x, y, .. } => {
|
||||
self.press(btn::RPAD_TOUCH, active);
|
||||
// Normalized 0..=65535 (centre 32768) → the pad's centred s16 range.
|
||||
self.rpad_x = ((x as i32) - 32768) as i16;
|
||||
self.rpad_y = ((y as i32) - 32768) as i16;
|
||||
}
|
||||
RichInput::Motion { gyro, accel, .. } => {
|
||||
self.gyro = gyro;
|
||||
self.accel = accel;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// Serialize a neutral-plus-buttons Deck state into the 64-byte unnumbered report. Header is
|
||||
/// `[0x01, 0x00, 0x09, len]` + a little-endian frame counter; `steam_raw_event` drops anything
|
||||
/// where `size != 64 || data[0] != 1 || data[1] != 0`, then switches on `data[2]`.
|
||||
/// Serialize the full Deck input report (`ID_CONTROLLER_DECK_STATE`) into the 64-byte unnumbered
|
||||
/// frame `hid-steam` parses. Pure + byte-exact against `steam_do_deck_input_event`; the report-id
|
||||
/// constant is `data[0]=0x01` (NOT a HID report id — this report is unnumbered).
|
||||
pub fn serialize_deck_state(r: &mut [u8; STEAM_REPORT_LEN], st: &SteamState, seq: u32) {
|
||||
r.fill(0);
|
||||
r[0] = 0x01;
|
||||
@@ -111,35 +255,72 @@ pub fn serialize_deck_state(r: &mut [u8; STEAM_REPORT_LEN], st: &SteamState, seq
|
||||
r[2] = ID_CONTROLLER_DECK_STATE;
|
||||
r[3] = 0x3C; // payload length; the kernel ignores it
|
||||
r[4..8].copy_from_slice(&seq.to_le_bytes());
|
||||
r[8] = st.b8;
|
||||
r[9] = st.b9;
|
||||
r[10] = st.b10;
|
||||
r[13] = st.b13;
|
||||
r[14] = st.b14;
|
||||
r[8..16].copy_from_slice(&st.buttons.to_le_bytes()); // bytes 8..16 (12+15 stay 0)
|
||||
r[16..18].copy_from_slice(&st.lpad_x.to_le_bytes());
|
||||
r[18..20].copy_from_slice(&st.lpad_y.to_le_bytes());
|
||||
r[20..22].copy_from_slice(&st.rpad_x.to_le_bytes());
|
||||
r[22..24].copy_from_slice(&st.rpad_y.to_le_bytes());
|
||||
r[24..26].copy_from_slice(&st.accel[0].to_le_bytes()); // accel X → IMU ABS_X
|
||||
r[26..28].copy_from_slice(&st.accel[1].to_le_bytes()); // accel Y → IMU ABS_Z (kernel negates)
|
||||
r[28..30].copy_from_slice(&st.accel[2].to_le_bytes()); // accel Z → IMU ABS_Y
|
||||
r[30..32].copy_from_slice(&st.gyro[0].to_le_bytes()); // gyro X → IMU ABS_RX
|
||||
r[32..34].copy_from_slice(&st.gyro[1].to_le_bytes()); // gyro Y → IMU ABS_RZ (kernel negates)
|
||||
r[34..36].copy_from_slice(&st.gyro[2].to_le_bytes()); // gyro Z → IMU ABS_RY
|
||||
// 36..44 quaternion — left 0 (optional; the kernel does not surface it)
|
||||
r[44..46].copy_from_slice(&st.lt.to_le_bytes()); // left trigger → ABS_HAT2Y
|
||||
r[46..48].copy_from_slice(&st.rt.to_le_bytes()); // right trigger → ABS_HAT2X
|
||||
r[48..50].copy_from_slice(&st.lx.to_le_bytes()); // left joystick X → ABS_X
|
||||
r[50..52].copy_from_slice(&st.ly.to_le_bytes()); // left joystick Y → ABS_Y (kernel negates)
|
||||
r[52..54].copy_from_slice(&st.rx.to_le_bytes()); // right joystick X → ABS_RX
|
||||
r[54..56].copy_from_slice(&st.ry.to_le_bytes()); // right joystick Y → ABS_RY (kernel negates)
|
||||
r[56..58].copy_from_slice(&st.lpad_pressure.to_le_bytes());
|
||||
r[58..60].copy_from_slice(&st.rpad_pressure.to_le_bytes());
|
||||
}
|
||||
|
||||
/// Build the `steam_get_serial` GET_REPORT reply: `[0xAE, len, ATTRIB_STR_UNIT_SERIAL, ascii…]`,
|
||||
/// padded to 64 bytes. The kernel validates `reply[0] == 0xAE && 1 <= reply[1] <= 21 &&
|
||||
/// reply[2] == 1`; the serial ASCII follows at byte 3.
|
||||
/// Build the `steam_get_serial` GET_REPORT reply. The Steam feature path is report-id-0 with a
|
||||
/// leading report-id byte the kernel strips (`steam_recv_report` does `memcpy(data, buf+1, …)`), so
|
||||
/// the wire is `[0x00, 0xAE, len, 0x01, ascii…]`; the kernel then validates `reply[0]==0xAE`,
|
||||
/// `1<=reply[1]<=21`, `reply[2]==0x01`. Non-fatal (a bad reply → the `"XXXXXXXXXX"` fallback).
|
||||
pub fn serial_reply(serial: &str) -> [u8; STEAM_REPORT_LEN] {
|
||||
let mut buf = [0u8; STEAM_REPORT_LEN];
|
||||
let bytes = serial.as_bytes();
|
||||
let len = bytes.len().clamp(1, 21);
|
||||
buf[0] = ID_GET_STRING_ATTRIBUTE;
|
||||
buf[1] = len as u8;
|
||||
buf[2] = ATTRIB_STR_UNIT_SERIAL;
|
||||
buf[3..3 + len].copy_from_slice(&bytes[..len]);
|
||||
buf[0] = 0x00; // report id 0 — stripped by steam_recv_report
|
||||
buf[1] = ID_GET_STRING_ATTRIBUTE;
|
||||
buf[2] = len as u8;
|
||||
buf[3] = ATTRIB_STR_UNIT_SERIAL;
|
||||
buf[4..4 + len].copy_from_slice(&bytes[..len]);
|
||||
buf
|
||||
}
|
||||
|
||||
/// One service pass's extracted feedback. Rumble rides the universal 0xCA plane (so any client
|
||||
/// feels it); the classic SC's trackpad-pulse haptics (`0x8F`) are a later, model-specific add.
|
||||
#[derive(Default, Debug, PartialEq, Eq)]
|
||||
pub struct SteamFeedback {
|
||||
/// `(low, high)` motor levels (left/strong, right/weak), if a rumble report carried them.
|
||||
pub rumble: Option<(u16, u16)>,
|
||||
}
|
||||
|
||||
/// Parse a feature/output report the kernel wrote to our device. The Steam feedback path is a
|
||||
/// FEATURE `SET_REPORT` whose wire data is `[0x00 report-id, cmd, len, …]`; `cmd == 0xEB`
|
||||
/// (`steam_haptic_rumble`) carries `[…, 0, intensity(2), left_speed(2), right_speed(2), gains(2)]`.
|
||||
/// We surface `(left_speed, right_speed)` as `(low, high)` for the 0xCA rumble plane.
|
||||
pub fn parse_steam_output(data: &[u8]) -> SteamFeedback {
|
||||
let mut fb = SteamFeedback::default();
|
||||
// data[0] is the stripped report-id byte (0); the command id follows.
|
||||
if data.len() >= 10 && data[1] == ID_TRIGGER_RUMBLE_CMD {
|
||||
let le = |o: usize| u16::from_le_bytes([data[o], data[o + 1]]);
|
||||
let left = le(6); // left_speed (report[5..7]) → low / strong motor
|
||||
let right = le(8); // right_speed (report[7..9]) → high / weak motor
|
||||
fb.rumble = Some((left, right));
|
||||
}
|
||||
fb
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
|
||||
/// `steam_is_valve_interface()` binds the device iff the descriptor declares ≥1 feature report,
|
||||
/// so the descriptor MUST contain a Feature main item (0xB1) — plus an Input item (0x81) for the
|
||||
/// state report. A regression here silently makes `hid-steam` treat the device as a
|
||||
/// keyboard/mouse boot interface and never create the gamepad.
|
||||
#[test]
|
||||
fn descriptor_declares_input_and_feature_reports() {
|
||||
assert!(
|
||||
@@ -154,30 +335,120 @@ mod tests {
|
||||
);
|
||||
}
|
||||
|
||||
/// The report header is exactly what `steam_raw_event` requires (`data[0]==1, data[1]==0,
|
||||
/// data[2]==0x09`), the frame counter is little-endian, and `set_a` toggles byte 8 bit 7.
|
||||
/// Every analog field lands at the exact offset `steam_do_deck_input_event` reads, the header is
|
||||
/// what `steam_raw_event` requires, and the buttons pack into bytes 8..16 (12+15 zero). A
|
||||
/// one-byte slip here turns the whole controller into noise.
|
||||
#[test]
|
||||
fn serialize_header_seq_and_button() {
|
||||
fn serialize_is_byte_exact() {
|
||||
let mut st = SteamState::neutral();
|
||||
st.set_a(true);
|
||||
st.buttons = btn::A | btn::L4 | btn::R5 | btn::QAM;
|
||||
st.lx = 0x1122;
|
||||
st.ly = 0x3344;
|
||||
st.rx = 0x5566;
|
||||
st.ry = 0x778;
|
||||
st.lt = 0xABCD;
|
||||
st.rt = 0xEF01;
|
||||
st.lpad_x = 0x0A0B;
|
||||
st.lpad_y = 0x0C0D;
|
||||
st.rpad_x = 0x0E0F;
|
||||
st.rpad_y = 0x1011;
|
||||
st.accel = [0x0102, 0x0304, 0x0506];
|
||||
st.gyro = [0x0708, 0x090A, 0x0B0C];
|
||||
st.lpad_pressure = 0x1314;
|
||||
st.rpad_pressure = 0x1516;
|
||||
let mut r = [0u8; STEAM_REPORT_LEN];
|
||||
serialize_deck_state(&mut r, &st, 0xAABB_CCDD);
|
||||
assert_eq!(&r[0..4], &[0x01, 0x00, 0x09, 0x3C]);
|
||||
assert_eq!(&r[4..8], &[0xDD, 0xCC, 0xBB, 0xAA]); // seq LE
|
||||
assert_eq!(r[8] & DECK_B8_A, DECK_B8_A);
|
||||
st.set_a(false);
|
||||
serialize_deck_state(&mut r, &st, 0);
|
||||
assert_eq!(r[8] & DECK_B8_A, 0);
|
||||
// buttons: A=bit7 (byte8), L4=bit41 (byte13.1), R5=bit16 (byte10.0), QAM=bit50 (byte14.2).
|
||||
assert_eq!(r[8], 0x80); // A
|
||||
assert_eq!(r[10], 0x01); // R5
|
||||
assert_eq!(r[12], 0x00); // unused button byte
|
||||
assert_eq!(r[13], 0x02); // L4 (bit 1)
|
||||
assert_eq!(r[14], 0x04); // QAM (bit 2)
|
||||
assert_eq!(r[15], 0x00); // unused button byte
|
||||
assert_eq!(&r[16..18], &0x0A0Bi16.to_le_bytes()); // lpad X
|
||||
assert_eq!(&r[20..22], &0x0E0Fi16.to_le_bytes()); // rpad X
|
||||
assert_eq!(&r[24..26], &0x0102i16.to_le_bytes()); // accel X
|
||||
assert_eq!(&r[26..28], &0x0304i16.to_le_bytes()); // accel Y
|
||||
assert_eq!(&r[28..30], &0x0506i16.to_le_bytes()); // accel Z
|
||||
assert_eq!(&r[30..32], &0x0708i16.to_le_bytes()); // gyro X
|
||||
assert_eq!(&r[44..46], &0xABCDu16.to_le_bytes()); // left trigger
|
||||
assert_eq!(&r[46..48], &0xEF01u16.to_le_bytes()); // right trigger
|
||||
assert_eq!(&r[48..50], &0x1122i16.to_le_bytes()); // left joy X
|
||||
assert_eq!(&r[50..52], &0x3344i16.to_le_bytes()); // left joy Y
|
||||
assert_eq!(&r[52..54], &0x5566i16.to_le_bytes()); // right joy X
|
||||
assert_eq!(&r[56..58], &0x1314u16.to_le_bytes()); // left pad pressure
|
||||
assert_eq!(&r[58..60], &0x1516u16.to_le_bytes()); // right pad pressure
|
||||
}
|
||||
|
||||
/// The serial reply passes `steam_get_serial`'s validation (`reply[0]==0xAE`, `1<=reply[1]<=21`,
|
||||
/// `reply[2]==1`) and carries the ASCII at byte 3.
|
||||
/// `from_gamepad` sets the right Deck bits + scales triggers, and a touched flag is merged when
|
||||
/// a trackpad contact arrives via `apply_rich`.
|
||||
#[test]
|
||||
fn serial_reply_passes_kernel_validation() {
|
||||
fn from_gamepad_and_rich_mapping() {
|
||||
let s = SteamState::from_gamepad(
|
||||
gs::BTN_A | gs::BTN_START | gs::BTN_GUIDE | gs::BTN_LB,
|
||||
1000,
|
||||
-2000,
|
||||
0,
|
||||
0,
|
||||
255,
|
||||
0,
|
||||
);
|
||||
assert_ne!(s.buttons & btn::A, 0);
|
||||
assert_ne!(s.buttons & btn::MENU, 0);
|
||||
assert_ne!(s.buttons & btn::STEAM, 0);
|
||||
assert_ne!(s.buttons & btn::LB, 0);
|
||||
assert_ne!(s.buttons & btn::LT_FULL, 0); // lt=255 → full-pull bit
|
||||
assert_eq!(s.lt, 255 * 128);
|
||||
assert_eq!(s.lx, 1000);
|
||||
assert_eq!(s.ly, -2000);
|
||||
|
||||
let mut s = SteamState::neutral();
|
||||
s.apply_rich(RichInput::Touchpad {
|
||||
pad: 0,
|
||||
finger: 0,
|
||||
active: true,
|
||||
x: 65535,
|
||||
y: 0,
|
||||
});
|
||||
assert_ne!(s.buttons & btn::RPAD_TOUCH, 0);
|
||||
assert_eq!(s.rpad_x, 32767); // 65535-32768
|
||||
assert_eq!(s.rpad_y, -32768); // 0-32768
|
||||
s.apply_rich(RichInput::Motion {
|
||||
pad: 0,
|
||||
gyro: [1, 2, 3],
|
||||
accel: [4, 5, 6],
|
||||
});
|
||||
assert_eq!(s.gyro, [1, 2, 3]);
|
||||
assert_eq!(s.accel, [4, 5, 6]);
|
||||
}
|
||||
|
||||
/// The serial reply carries the leading report-id byte the kernel strips, so the *stripped*
|
||||
/// view (`reply[1..]`) is what `steam_get_serial` validates: `[0xAE, len, 0x01, ascii…]`.
|
||||
#[test]
|
||||
fn serial_reply_has_stripped_prefix() {
|
||||
let r = serial_reply("PUNKTFUNK01");
|
||||
assert_eq!(r[0], ID_GET_STRING_ATTRIBUTE);
|
||||
assert!((1..=21).contains(&r[1]));
|
||||
assert_eq!(r[2], ATTRIB_STR_UNIT_SERIAL);
|
||||
assert_eq!(&r[3..3 + r[1] as usize], b"PUNKTFUNK01");
|
||||
assert_eq!(r[0], 0x00); // report id, stripped by steam_recv_report
|
||||
assert_eq!(r[1], ID_GET_STRING_ATTRIBUTE); // becomes reply[0] after strip
|
||||
assert!((1..=21).contains(&r[2]));
|
||||
assert_eq!(r[3], ATTRIB_STR_UNIT_SERIAL);
|
||||
assert_eq!(&r[4..4 + r[2] as usize], b"PUNKTFUNK01");
|
||||
}
|
||||
|
||||
/// A `0xEB` rumble feature report parses to `(left_speed, right_speed)`; other commands don't.
|
||||
#[test]
|
||||
fn parse_rumble_feedback() {
|
||||
// [report-id 0, 0xEB, len 9, 0, intensity(2), left(2), right(2), gains(2)]
|
||||
let mut d = vec![0u8; 12];
|
||||
d[1] = ID_TRIGGER_RUMBLE_CMD;
|
||||
d[2] = 9;
|
||||
d[6..8].copy_from_slice(&0x8000u16.to_le_bytes()); // left_speed
|
||||
d[8..10].copy_from_slice(&0x4000u16.to_le_bytes()); // right_speed
|
||||
assert_eq!(parse_steam_output(&d).rumble, Some((0x8000, 0x4000)));
|
||||
|
||||
let mut d = vec![0u8; 12];
|
||||
d[1] = ID_SET_SETTINGS_VALUES; // a settings write — no rumble
|
||||
assert_eq!(parse_steam_output(&d).rumble, None);
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user