commit 8d4238fe3e48cc340bca7032cd06ce691dc63daf
Author: John <j@soft.fish>
Date:   Sat Aug 2 02:27:58 2025 -0400

    Initial commit

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..e91aa0c
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,65 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "cc"
+version = "1.2.31"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3a42d84bb6b69d3a8b3eaacf0d88f179e1929695e1ad012b6cf64d9caaa5fd2"
+dependencies = [
+ "shlex",
+]
+
+[[package]]
+name = "libc"
+version = "0.2.174"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1171693293099992e19cddea4e8b849964e9846f4acee11b3948bcc337be8776"
+
+[[package]]
+name = "libusb1-sys"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da050ade7ac4ff1ba5379af847a10a10a8e284181e060105bf8d86960ce9ce0f"
+dependencies = [
+ "cc",
+ "libc",
+ "pkg-config",
+ "vcpkg",
+]
+
+[[package]]
+name = "pkg-config"
+version = "0.3.32"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7edddbd0b52d732b21ad9a5fab5c704c14cd949e5e9a1ec5929a24fded1b904c"
+
+[[package]]
+name = "procon2"
+version = "0.1.0"
+dependencies = [
+ "rusb",
+]
+
+[[package]]
+name = "rusb"
+version = "0.9.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ab9f9ff05b63a786553a4c02943b74b34a988448671001e9a27e2f0565cc05a4"
+dependencies = [
+ "libc",
+ "libusb1-sys",
+]
+
+[[package]]
+name = "shlex"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
+
+[[package]]
+name = "vcpkg"
+version = "0.2.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..0263a3d
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "procon2"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+rusb = "0.9.4"
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..b4f3f4d
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,192 @@
+//! Library for initializing a pro controller
+//!
+//! Code stolen from https://handheldlegend.github.io/procon2tool/
+#![allow(non_upper_case_globals)]
+#![allow(dead_code)]
+
+use rusb::DeviceHandle;
+use std::time::Duration;
+
+pub mod descriptor {
+    pub const VID: u16 = 0x057e;
+
+    pub mod pid {
+        pub const JOYCON2_R: u16 = 0x2066;
+        pub const JOYCON2_L: u16 = 0x2067;
+        pub const PROCON2: u16 = 0x2069;
+        pub const GCNSO: u16 = 0x2073;
+        pub const PIDS: [u16; 4] = [JOYCON2_L, JOYCON2_R, PROCON2, GCNSO];
+    }
+}
+
+pub struct Controller<'t, Ctx: rusb::UsbContext> {
+    device: &'t DeviceHandle<Ctx>,
+}
+
+impl<'t, Ctx: rusb::UsbContext> Controller<'t, Ctx> {
+    pub fn new(device: &'t DeviceHandle<Ctx>) -> Self {
+        Self { device }
+    }
+
+    pub fn init(&self) -> rusb::Result<usize> {
+        let Self { device } = self;
+        let mut out: usize = 0;
+        let timeout = Duration::from_millis(100);
+        let endpoint: u8 = 2;
+        out += device.write_bulk(endpoint, INIT_COMMAND_0x03, timeout)?;
+        out += device.write_bulk(endpoint, UNKNOWN_COMMAND_0x07, timeout)?;
+        out += device.write_bulk(endpoint, UNKNOWN_COMMAND_0x16, timeout)?;
+        out += device.write_bulk(endpoint, REQUEST_CONTROLLER_MAC, timeout)?;
+        // out += device.write_bulk(endpoint, LTK_REQUEST, timeout)?;
+        out += device.write_bulk(endpoint, UNKNOWN_COMMAND_0x15_ARG_0x03, timeout)?;
+        out += self.set_player_led(0)?;
+        out += device.write_bulk(endpoint, IMU_COMMAND_0x02, timeout)?;
+        out += device.write_bulk(endpoint, OUT_UNKNOWN_COMMAND_0x11, timeout)?;
+        out += device.write_bulk(endpoint, UNKNOWN_COMMAND_0x0A, timeout)?;
+        out += device.write_bulk(endpoint, IMU_COMMAND_0x04, timeout)?;
+        out += device.write_bulk(endpoint, ENABLE_HAPTICS, timeout)?;
+        out += device.write_bulk(endpoint, OUT_UNKNOWN_COMMAND_0x10, timeout)?;
+        out += device.write_bulk(endpoint, OUT_UNKNOWN_COMMAND_0x01, timeout)?;
+        out += device.write_bulk(endpoint, OUT_UNKNOWN_COMMAND_0x03, timeout)?;
+        out += device.write_bulk(endpoint, OUT_UNKNOWN_COMMAND_0x0A_ALT, timeout)?;
+
+        Ok(out)
+    }
+
+    pub fn set_player_led(&self, pattern: u8) -> rusb::Result<usize> {
+        let Self { device } = self;
+
+        #[rustfmt::skip]
+        let buf: [u8; 16] = [
+            0x09, 0x91, 0x00, 0x07, 0x00, 0x08, 0x00, 0x00,
+            pattern, // LED bitfield - replace 0x00 with desired LED pattern
+            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        ];
+
+        device.write_bulk(2, &buf, Duration::from_millis(16))
+    }
+}
+
+// --- Here there be raw USB bullshit --- \\
+
+/// Initialization Command 0x03 - Starts HID output at 4ms intervals
+#[rustfmt::skip]
+const INIT_COMMAND_0x03: &[u8] = &[
+      0x03, 0x91, 0x00, 0x0d, 0x00, 0x08,
+      0x00, 0x00, 0x01, 0x00,
+      0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF  // Console MAC Address (Little Endian)
+];
+
+#[rustfmt::skip]
+const UNKNOWN_COMMAND_0x07: &[u8] = &[
+    0x07, 0x91, 0x00, 0x01,
+    0x00, 0x00, 0x00, 0x00,
+];
+
+#[rustfmt::skip]
+const UNKNOWN_COMMAND_0x16: &[u8] = &[
+    0x16, 0x91, 0x00, 0x01,
+    0x00, 0x00, 0x00, 0x00,
+];
+
+/// LTK Request Command 0x15 Arg 0x02
+#[rustfmt::skip]
+const LTK_REQUEST: &[u8] = &[
+    0x15, 0x91, 0x00, 0x02, 0x00, 0x11,
+    0x00, 0x00, 0x00,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,  // LTK - 16 byte key
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
+];
+
+/// Unknown Command 0x15 Arg 0x03
+#[rustfmt::skip]
+const UNKNOWN_COMMAND_0x15_ARG_0x03: &[u8] = &[
+    0x15, 0x91, 0x00, 0x03, 0x00, 0x01,
+    0x00, 0x00, 0x00
+];
+
+/// Unknown Command 0x09
+    #[rustfmt::skip]
+const UNKNOWN_COMMAND_0x09: &[u8] = &[
+    0x09, 0x91, 0x00, 0x07, 0x00, 0x08,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+];
+
+/// IMU Command 0x0C Arg 0x02 - No ACK needed
+    #[rustfmt::skip]
+const IMU_COMMAND_0x02: &[u8] = &[
+    0x0c, 0x91, 0x00, 0x02, 0x00, 0x04,
+    0x00, 0x00, 0x27,
+    0x00, 0x00, 0x00
+];
+/// Request Controller MAC Command 0x15 Arg 0x01
+#[rustfmt::skip]
+const REQUEST_CONTROLLER_MAC: &[u8] = &[
+    0x15, 0x91, 0x00, 0x01, 0x00, 0x0e,
+    0x00, 0x00, 0x00, 0x02,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,  // Console MAC Address (Little Endian)
+    0xFF,  // Byte 14 with bit 0 masked off
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF  // Remainder of Console MAC Address
+];
+
+/// OUT Unknown Command 0x11
+#[rustfmt::skip]
+const OUT_UNKNOWN_COMMAND_0x11: &[u8] = &[
+    0x11, 0x91, 0x00, 0x03,
+    0x00, 0x00, 0x00, 0x00
+];
+
+/// Unknown Command 0x0A
+#[rustfmt::skip]
+const UNKNOWN_COMMAND_0x0A: &[u8] = &[
+    0x0a, 0x91, 0x00, 0x08, 0x00, 0x14,
+    0x00, 0x00, 0x01,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0x35, 0x00, 0x46,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+];
+
+/// IMU Command 0x0C Arg 0x04
+#[rustfmt::skip]
+const IMU_COMMAND_0x04: &[u8] = &[
+    0x0c, 0x91, 0x00, 0x04, 0x00, 0x04,
+    0x00, 0x00, 0x27,
+    0x00, 0x00, 0x00
+];
+
+/// Enable Haptics (Probably) 0x03
+#[rustfmt::skip]
+const ENABLE_HAPTICS: &[u8] = &[
+    0x03, 0x91, 0x00, 0x0a, 0x00, 0x04,
+    0x00, 0x00, 0x09,
+    0x00, 0x00, 0x00
+];
+
+/// OUT Unknown Command 0x10 - No ACK
+#[rustfmt::skip]
+const OUT_UNKNOWN_COMMAND_0x10: &[u8] = &[
+    0x10, 0x91, 0x00, 0x01,
+    0x00, 0x00, 0x00, 0x00
+];
+
+/// OUT Unknown Command 0x01
+#[rustfmt::skip]
+const OUT_UNKNOWN_COMMAND_0x01: &[u8] = &[
+    0x01, 0x91, 0x00, 0x0c,
+    0x00, 0x00, 0x00, 0x00
+];
+
+/// OUT Unknown Command 0x03 (different from init command)
+#[rustfmt::skip]
+const OUT_UNKNOWN_COMMAND_0x03: &[u8] = &[
+    0x03, 0x91, 0x00, 0x01,
+    0x00, 0x00, 0x00
+];
+
+/// OUT Unknown Command 0x0A (different from earlier 0x0A)
+#[rustfmt::skip]
+const OUT_UNKNOWN_COMMAND_0x0A_ALT: &[u8] = &[
+    0x0a, 0x91, 0x00, 0x02, 0x00, 0x04,
+    0x00, 0x00, 0x03,
+    0x00, 0x00
+];
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..77d94e4
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,60 @@
+use std::{thread::sleep, time::Duration};
+
+use procon2::{
+    Controller,
+    descriptor::{VID, pid},
+};
+use rusb::Result;
+
+#[rustfmt::skip]
+const PLAYER: [u8; 16] = [
+    0b0000,
+    0b0001,
+    0b0011,
+    0b0111,
+    0b1111,
+    0b1110,
+    0b1100,
+    0b1000,
+    0b0010,
+    0b0110,
+    0b0100,
+    0b0101,
+    0b1001,
+    0b1011,
+    0b1101,
+    0b1010,
+];
+
+fn main() -> Result<()> {
+    let mut devices = vec![];
+
+    for device in rusb::devices()?.iter() {
+        let desc = device.device_descriptor()?;
+
+        if desc.vendor_id() == VID && pid::PIDS.contains(&desc.product_id()) {
+            println!("Found player {}: {device:?}!", devices.len() + 1);
+            let device = device.open()?;
+            let controller = Controller::new(&device);
+
+            controller.init()?;
+
+            devices.push(device);
+        }
+    }
+
+    // Play a shmancy pattern in-sync on all controllers
+    for pattern in &PLAYER[0..8] {
+        for device in devices.iter() {
+            Controller::new(device).set_player_led(*pattern)?;
+        }
+        sleep(Duration::from_millis(100));
+    }
+
+    // Set the controller IDs
+    for (count, device) in devices.iter().enumerate() {
+        Controller::new(device).set_player_led(PLAYER[(count + 1) & 0xf])?;
+    }
+
+    Ok(())
+}