Skip to main content

​
GPIO Toolkit

Control Raspberry Pi GPIO pins with read, write, edge watching, and software PWM. Compatible with Pi 5 (chip 4) and Pi 4 (chip 0). Requires node-libgpiod as an optional peer dependency.

​
Quick Start

import { Agent, ollama } from "@radaros/core";
import { GpioToolkit } from "@radaros/edge";

const gpio = new GpioToolkit({
  chipNumber: 4,         // Pi 5
  allowedPins: [17, 27, 22],
  maxPwmFrequency: 1000,
});

const agent = new Agent({
  name: "gpio-agent",
  model: ollama("llama3.2:1b"),
  instructions: "Control GPIO pins on the Raspberry Pi. Only use pins 17, 27, and 22.",
  tools: [...gpio.getTools()],
});

​
Config

​
chipNumber
number
default:"0"
GPIO chip number. Use 4 for Pi 5, 0 for Pi 4 and earlier.
​
allowedPins
number[]
default:"[]"
Allowlist of pin numbers. Empty array = all pins allowed.
​
maxPwmFrequency
number
default:"1000"
Maximum software PWM frequency in Hz.

​
Tools

ToolDescription
gpio_readRead the current state (0 or 1) of a pin
gpio_writeSet a pin to HIGH (1) or LOW (0)
gpio_watchWatch for rising/falling edge changes
gpio_pwmSoftware PWM for LEDs, buzzers, or servos

​
Safety

The allowedPins config restricts which pins the agent can access, preventing accidental writes to system-critical pins.