hathach/tinyusb

Features

• USB Device Stacks - Adds USB device functionality to microcontrollers so they can act as keyboards, drives, or serial ports.
• USB Endpoint Transfers - Provides the fundamental USB data transfer mechanism via endpoint read/write operations.
• USB Class Driver Plugin Interfaces - Provides a fixed callback table for registering custom USB class drivers without modifying core stack code.
• Embedded USB Host Stacks - Drives USB peripherals like keyboards, mice, and storage devices directly from a microcontroller without a host computer.
• USB Class Implementations - Implements standard USB device classes such as HID, CDC, MSC, and Audio without dynamic allocation.
• USB Host Class Implementations - Implements host-side USB class drivers for HID, MSC, CDC-ACM, and serial adapters.
• Multi-Architecture MCU Stacks - Compiles and runs a single USB stack across a wide range of MCU architectures from different manufacturers.
• USB Device Communication - Implements low-level USB device communication for host enumeration and class protocol exchanges.
• Custom USB Class Driver Registrations - Ships a plugin interface for registering custom USB class drivers without modifying core stack code.
• Standard USB Device Emulations - Emulates standard USB device classes like HID, MSC, and CDC for host enumeration.
• USB Device Stack Initializations - Provides initialization routines for USB device controllers across supported microcontrollers.
• USB Host Communications - Provides host-mode USB communication to drive peripherals like keyboards and storage devices.
• USB Host Emulations - Emulates a USB host controller to drive peripherals like keyboards and mass storage devices.
• USB Host Stack Initializations - Provides initialization routines for USB host controllers across supported microcontrollers.
• USB Power Delivery Contract Negotiations - Implements USB Power Delivery 3.0 contract negotiation for power sourcing and sinking.
• USB Power Delivery Managers - Negotiates and manages power contracts over USB Type-C using the Power Delivery 3.0 protocol on embedded hardware.
• USB Power Delivery Protocol Engines - Implements USB PD 3.0 message passing and state machine for negotiating power contracts over Type-C connections.
• USB Power Delivery Stacks - Provides an embedded USB Power Delivery 3.0 stack that negotiates and manages power contracts over USB Type-C.
• Hardware Abstraction Layers - Wraps MCU-specific USB controller registers behind a hardware abstraction layer for portability across architectures.
• Microcontroller USB Libraries - Provides a portable USB library that compiles across diverse microcontroller architectures from different manufacturers.
• Runtime Descriptor Switches - Switches between multiple USB device descriptor sets at runtime to present different device profiles.
• Runtime USB Configuration Switches - Supports runtime switching between multiple USB device configurations via descriptor changes.
• Custom Class Driver Registrations - Enables writing and registering custom USB class drivers for device or host mode without modifying core stack code.
• USB Low-Power State Handlings - Handles USB suspend, resume, and remote wakeup signals for power conservation.
• RTOS-Agnostic Implementations - Works on bare metal or with FreeRTOS, RT-Thread, or Mynewt without changing the USB code.
• RTOS-Agnostic Interrupt Handlers - Delegates interrupt handling to a central queue and uses semaphores to work without an OS or with FreeRTOS, RT-Thread, or Mynewt.
• Centralized Interrupt Queues - Delegates USB interrupt service routines to a central queue processed by the application thread.
• Compile-Time Buffer Allocations - Pre-allocates all endpoint buffers and control structures at compile time for deterministic memory usage.
• C Object-Oriented Frameworks - Organises USB protocol handling into device and host stacks using C structs with function pointers for polymorphism.
• Embedded Systems - Embedded USB stack.
• Hardware Drivers - Cross-platform USB stack for embedded systems.

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