Hardware & Platform Builtins (xmop3)

Topics
	GPIO & Basic I/O
	ESP32 System
	Camera (ESP32-S3-EYE)
	LCD1602 Character Display
	1-Wire & DS18B20
	Over-the-Air Firmware Updates
	PCA9685 PWM / Servo Driver
	Platform (generic)
	Ultrasonic Sonar (HC-SR04)
	SPI Bus
	WiFi
	I2C (Wire)
	WS2812 / NeoPixel LEDs
	CUDA GPU
	HIP / ROCm GPU
	LLArduino – LambLisp's own Arduino API

Detailed Description

The C++ ll_xmop3_* builtins that expose hardware and platform features to Scheme – GPIO, buses (I2C/SPI/1-Wire), sensors, displays, LEDs, WiFi, camera, GPU, and platform control.