daydream-catcher

Reverse-engineered Daydream and GearVR Controller Protocols and Hardware!

Index of contents:

Writeups:

1. Snapping out of a Daydream
   • My account of the journey I went through while reverse-engineering the Daydream Controller's Firmware and Hardware!
2. A brief peek inside GearVR's Controller
   • A less-thorough but still-fruitful expedition through Samsung's GearVR Controller.

References:

Detailed descriptions of controller hardware, Bluetooth packet types and contents, and other firmware oddities.

• Daydream Controller (a.k.a. Paprika)

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• GearVR Controller (a.k.a. Gochugaru)

Crates:

• daydream-catcher
  • Parsing Daydream and GearVR controller packets.
  • Parsing and generating Daydream MTP Serial packets.
  • no_std and no_alloc compatible!
• daydream-airmouse
  • WIP Crate for generating mouse movement commands based on the IMU + touchpad + button inputs of the Daydream/GearVR controllers.
  • no_std and no_alloc compatible!
• daydream-airmouse-uinput
  • Linux-only uinput-enabled client for controlling the mouse via daydream-airmouse.
  • Primarily a testbed to speed up development, not intended for daily use.
• daydream-airmouse-esp
  • WIP ESP32-S3 firmware to connect to Daydream/GearVR controllers and output mouse/keyboard events over native USB HID.
  • Very early (non-functional ATM), ironing out BLE connection issues with the still-blossoming esp-rs toolchain.
  • Uses no_std.
• gamepad-motion-helpers
  • A from-scratch native Rust port of Jibb Smart's original C++ GamepadMotionHelpers.
  • Tests compare against the original library via gamepad_motion!
  • no_std and no_alloc compatible!

Special thanks:

• MuffinTastic for their encouragment, assistance, and knowledge.
• deku for making working with bitfields a pleasure rather than a pain.
• ImHex for being excellent overall, especially with it's support for visualizing patterns.