psx2usb

PSX to USB HID controller converter

rp2040 (raspberry-pi pico) based device to convert PSX controllers to USB HID gamepads.

Components

• one rp2040 board with 5 GPIO available
• one PSX controller connector (female)

Selected pinout

The PSX connector controller port has the following pinout:

1. Data
2. Command
3. 7.5V Rumble motor
4. GND (also connected to the shield)
5. 3.3V
6. Attention
7. Clock
8. Not connected
9. Acknowledge

[Image from consoledev.net]

PSX signal	rp2040 GPIO	Direction	Description
Data	13	IN	Receive ID, buttons and adc data from controller
Command	12	OUT	Send read commands to controller
Attention	6	OUT	Chip select (active low) for controller
Clock	5	OUT	Clock serial communication for DATA/CMD lines
Acknowledge	3	IN	Acknowledge command RX, active low

Installation

• Run cmake && make
• Start rp2040 in usb storage mode. Copy psx2usb.u2f to the device.
• Reboot rp2040