Files
riojoy/README.md
T
CydandClaude Opus 4.8 b3cb764f4d Phase 2: serial + RIO protocol core (RioJoy.Core) with unit tests
Port the RIO wire protocol from legacy/riovjoy2.cpp into testable C#:

- Protocol/: command + length table, 7-bit checksum, packet builder, and a
  streaming receive-side framing state machine (PacketParser) that mirrors the
  legacy ReadCommBlock framing/resync (high-bit-mid-packet abort). Typed RIO->PC
  decodes: AnalogReport (14-bit sign-extend), VersionInfo, CheckStatus; lamp-state
  composition.
- Serial/: RioSerialLink drives an async receive loop with ACK/NAK reply policy
  (legacy force-accept vs. opt-in VerifyInboundChecksum), the analog poll timer,
  and the >5s reset-recovery watchdog. IRioTransport abstracts the COM port; the
  SerialPort-backed transport does 9600 8N1 + DTR reset pulse, and acquire/release
  is just create/dispose (foundation for native-game serial yield).
- tests/RioJoy.Core.Tests: 54 xUnit tests covering checksum, framing/resync,
  builder round-trips, analog sign-extension + sentinel rejection, lamp combos,
  and the read loop driven against an in-memory fake transport.

Hardware verification (version/check/analog against a cabinet) remains; it can't
be done off-device.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-26 13:04:03 -05:00

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Markdown

# RIOJoy
Modern Windows 10/11 interface between the cockpit **RIO** (Remote Input/Output)
board and Windows, as a virtual **joystick / keyboard / mouse** — the successor
to the legacy vJoy-based app, with **no vJoy dependency**.
The RIO has 72 digital inputs and outputs (lighted buttons) and 5 analog axes
(joystick X/Y, throttle, left pedal, right pedal), connected over RS-232 at
9600 8N1. RIOJoy exposes these to games that don't natively know about the
cockpit hardware, with **per-game profiles**. (The native games — Firestorm,
Red Planet — talk to the RIO directly and do not use this app.)
## Repository layout
| Path | Contents |
|------|----------|
| [`src/RioJoy.Core`](src/RioJoy.Core/) | Protocol, profile model, input mapper, HID feeder (class library) |
| [`src/RioJoy.Tray`](src/RioJoy.Tray/) | Background tray application |
| [`tests/RioJoy.Core.Tests`](tests/RioJoy.Core.Tests/) | xUnit tests for the protocol core |
| [`driver/`](driver/) | `RioGamepad` virtual HID driver (KMDF + VHF) — replaces vJoy |
| [`docs/PLAN.md`](docs/PLAN.md) | Full modernization plan (7 phases) |
| [`docs/PROTOCOL.md`](docs/PROTOCOL.md) | RIO wire format + `iRIO` input-map reference |
| [`docs/reference/`](docs/reference/) | Cockpit overlay art & the legacy labeling pipeline |
| [`legacy/`](legacy/) | Original C++/vJoy implementation, kept as reference |
## Building
Requires the **.NET 8 SDK** and Windows. The driver builds separately with the
**WDK** (see [`driver/README.md`](driver/README.md)).
```sh
dotnet build RioJoy.sln -c Release
dotnet test RioJoy.sln
```
## Status
Phase 2 (serial + RIO protocol core) is code-complete and unit-tested; hardware
verification is pending. See [`docs/PLAN.md`](docs/PLAN.md) for the full roadmap.