Controller mod for Densha de GO! Plug & Play

This mod allows you to use your Densha de GO! Plug & Play as a USB controller for other games.

Requirements

• USB flash drive
• Powered micro USB OTG adapter
• Micro USB data cable

Installation

1. Prepare the USB flash drive by formatting it with a single FAT32 partition.
2. Download the latest release from the Releases section.
3. Extract the content to the root of the USB drive.
4. Plug the USB drive to the OTG adapter, plug the adapter to the Plug & Play and plug the data cable to the adapter and a power source.
5. Turn on the Plug & Play. The door lamp will turn on to show the installation has begun. Once it has finished, the lamp will turn off. Turn off the unit and remove everything.

Uninstallation

To completely remove the mod, follow these steps. You need the backup of the original kernel created during installation.

1. Prepare the USB flash drive by formatting it with a single FAT32 partition.
2. Download the latest release from the Releases section.
3. Extract the content to the root of the USB drive.
4. Create an empty file named revert on the root of the USB drive.
5. Put the original (backup) files uImage and mali.ko into a folder named BACKUP on the root of the USB drive.
6. Plug the USB drive to the OTG adapter, plug the adapter to the Plug & Play and plug the data cable to the adapter and a power source.
7. Turn on the Plug & Play. The door lamp will turn on to show the uninstallation has begun. Once it has finished, the lamp will turn off. Turn off the unit and remove everything.

Usage

Connect the Plug & Play to a PC or console using the data cable. Press one of the following button combinations to select the controller you want to emulate:

Controller	Button combination	Notes
One handle controller (Nintendo Switch)	UP	SELECT+START=HOME, SELECT+LEFT=L, SELECT+RIGHT=R
Two handle controller (PC)	RIGHT	D-Pad is mapped to SELECT+ABCD
Two handle controller (PS1)	DOWN + Power handle at 0	Hold D to disable handles and enable D-Pad
Two handle controller (Nintendo 64)	DOWN + Power handle at 1
Two handle controller (Sega Saturn)	DOWN + Power handle at 2
Two handle controller (Sega Dreamcast)	DOWN + Power handle at 3
Two handle controller "Type 2" (PS2)	D
Shinkansen controller (PS2)	B	Power notches are mapped to P2-P4-P7-P10-P13
Multi Train Controller (PS2) - P4/B7	C + Power handle at 0	SELECT+A=A2, SELECT+D=ATS, SELECT+D-Pad=Reverser
Multi Train Controller (PS2) - P4/B2-B7	C + Power handle at 1	SELECT+A=A2, SELECT+D=ATS, SELECT+D-Pad=Reverser
Multi Train Controller (PS2) - P5/B5	C + Power handle at 2	SELECT+A=A2, SELECT+D=ATS, SELECT+D-Pad=Reverser
Multi Train Controller (PS2) - P5/B7	C + Power handle at 3	SELECT+A=A2, SELECT+D=ATS, SELECT+D-Pad=Reverser
Generic Train Controller	A

Hold the buttons until the controller vibrates to confirm selection. If no button is pressed, you can play with the Plug & Play as usual.

If you need more information regarding each controller and supported software, please check the Densha de GO! controller documentation.

Usage with emulators

The mod can be used with certain emulators and compatible games. Instructions are provided per system.

Nintendo 64 (RetroArch)

1. Use mode Two handle controller (Nintendo 64).
2. In the emulator's settings, assign the controller to port 3. The controller should map automatically.
3. Enable the setting Independent C-Buttons controls in the core's settings.
4. Select the correct controller type in-game.

Nintendo Switch (any)

1. Use mode One handle controller (Nintendo Switch).
2. In the emulator's settings, set the controller type to Pro Controller. The controller should map automatically.
3. Select the correct controller type in-game.

Sega Dreamcast (Flycast)

1. Use mode Two handle controller (Sega Dreamcast).
2. In the emulator's settings, set the controller type to Densha de GO!. The controller should map automatically.

Sega Dreamcast (RetroArch)

1. Use mode Two handle controller (Sega Dreamcast).
2. In the emulator's settings, set the controller type to Densha de GO!. The controller should map automatically.

Sega Saturn (RetroArch)

1. Use mode Two handle controller (Sega Saturn). The controller should map automatically.
2. Select the correct controller type in-game.

Sony PlayStation (DuckStation)

1. Use mode Two handle controller (PS1).
2. Add the SDL controller mappings to your PC.
3. In the emulator's settings, configure a regular digital controller (not a Densha de GO! controller). The controller should map automatically.
4. If needed, hold D to temporarily disable the controller and enable the D-Pad for navigation.

Sony PlayStation (RetroArch)

1. Use mode Two handle controller (PS1).
2. In the emulator's settings, configure a regular digital controller (not a Densha de GO! controller). The controller should map automatically.
3. If needed, hold D to temporarily disable the controller and enable the D-Pad for navigation.

Sony PlayStation 2 (PCSX2)

1. Use mode Generic Train Controller.
2. In the emulator's settings, configure a USB Type 2 Train Controller. Map the buttons/axes manually.

Sony PlayStation 3 (RPCS3)

1. Use mode Two handle controller "Type 2" (PS2).
2. Follow the OS-specific instructions in the RPCS3 wiki to make sure the emulator can see the controller.
3. No further configuration required, the emulator will communicate with the controller directly via USB.

RNDIS access (advanced users)

When no controller is selected, RNDIS access is enabled in the device. You can access SSH on the Plug & Play at 169.254.215.100. SFTP is not supported out of the box, but SCP is available. Keep in mind the root filesystem is mounted read-only by default.

Notes

• During the first installation, if no previous mods are detected, the device's original kernel is backed up to a folder named BACKUP in the root of the USB drive. Copy its contents to a safe location.
• If detected, the original mod by GMMan will be uninstalled to avoid conflicts.

Compilation

To compile the program yourself, you will need Rust and toolchain for Armv7-A. The easiest way is to install cross and run:

cross build --target arm-unknown-linux-musleabi --release

The Linux kernel source can be found here.