Input Event Monitor - getevent

Features

• 🖱️ Mouse event monitoring (clicks/movement/wheel)
• 👆 Multi-touch event capture (coordinates/pressure/timestamps)
• ⌨️ Keyboard key press detection (key codes/event types)
• 🔍 Automatic input device detection in /dev
• ⚙️ Command-line device path specification
• 🚦 Non-blocking I/O with 500ms timeout
• 🔒 Resource-safe memory management

Build Configuration

Enable in NuttX configuration:

# Enable getevent utility
CONFIG_GRAPHICS_INPUT_GETEVENT=y

# Optional debug details (requires recompilation)
CONFIG_GRAPHICS_INPUT_GETEVENT_DETAIL_INFO=y

Usage

# Auto-detect all input devices
getevent

# Monitor specific mouse device
getevent -m /dev/mouse0

# Monitor specific touch device
getevent -t /dev/input0

# Monitor specific keyboard
getevent -k /dev/kbd0

# Combine multiple devices
getevent -m /dev/mouse0 -t /dev/input0

Requirements

NuttX Input Subsystem

The application is built with NuttX input subsystem support, which is required for input event handling.

Kernel Syslog Output

The kernel must be configured to output syslog messages for enhanced debugging capabilities.

Termination

Press Ctrl+C to safely terminate the monitoring process.