Tinyusb

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TinyUSB is an open-source, cross-platform USB stack for embedded systems. It provides memory-safe and thread-safe USB connectivity across 50+ MCU families, supporting various device and host classes.

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At a glance

Pricing

Open Source

Free tier

Yes

API

Skill level

Technical

About

What is tinyusb?

TinyUSB is an open-source, cross-platform USB Host/Device stack specifically designed for embedded systems. It prioritizes memory safety by avoiding dynamic allocation and ensuring thread safety by deferring all interrupts to non-ISR task functions. This robust stack offers extensive portability across more than 50 MCU families and supports a comprehensive range of USB device classes, including Audio, CDC, HID, MSC, MIDI, and Network, as well as host classes like CDC-ACM, HID, MSC, and MIDI. It is RTOS-friendly, working seamlessly with bare metal, FreeRTOS, RT-Thread, and Mynewt, making it a versatile solution for developers building embedded applications requiring reliable USB communication.

Best used for

Ideal for developers who need to integrate reliable USB host and device capabilities into embedded systems, and require a memory-safe and thread-safe solution. Especially valuable for projects targeting a wide range of MCU families and requiring support for various USB classes like HID, MSC, and CDC.

Common actions

implement USB connectivity

develop embedded systems

manage USB devices

integrate USB host

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Capabilities

Key features

Cross-platform USB stack
Memory-safe operation
Thread-safe design
Supports 50+ MCU families
Comprehensive USB classes
RTOS-friendly

Target Audience

developer

Integrations

Not yet documented

Pricing & Plans

Open Source

Free

FAQs

What embedded systems does TinyUSB support?

TinyUSB is designed to be highly portable and supports over 50 MCU families from manufacturers like Allwinner, Analog, Artery, Espressif, MicroChip, NXP, Raspberry Pi, Renesas, ST, and TI. It provides drivers for various USB controllers found in these MCUs.

What USB device and host classes are supported by TinyUSB?

TinyUSB supports a wide array of device classes including Audio, CDC, HID, MSC, MIDI, MTP/PTP, Network (RNDIS, ECM, NCM), and Vendor-specific. For host functionality, it supports CDC-ACM, HID, MSC, MIDI, and multi-level Hubs.

How does TinyUSB ensure thread and memory safety?

TinyUSB achieves thread safety by deferring all USB interrupt service routine (ISR) events to a central queue, which are then processed in a non-ISR task context. Memory safety is ensured by avoiding dynamic memory allocation, using only static buffers for all operations.

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