User`s guide

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Virtual

COM Port

Storage

Volume

HID

Interface

MSP430-Based

USB Device

USB Host

PC, Mobile, etc.

Your Host Application

MSP430's USB API

API Functional

Reference

MSP430 USB

Descriptor Tool

Generates your

USB interfaces...

USB API

3URJUDPPHU¶V

Guide

Describes the API, Desc

Tool, and design decisions

Your MSP430 Application

Functional reference

for API calls

USB Host: Windows,

Linux, Mac, Other

MSP430-Based

USB Device

CDC

Interface

Mass Storage

Interface

HID

Interface

Software

Documentation

Provided by TI

www.ti.com

Software

If your application will only use USB for updating the MSP430 firmware, you can jump to Section 3.6. Most

of the software components in the package, about to be described, apply to applications using USB as

part of their main function.

Figure 2. USB System and USB Developers Package Components

The items marked with purple text are provided by TI and correspond with items in Table 3.

The Descriptor Tool generates the USB interfaces you need. You then write an MSP430 application that

communicates with the host through these interfaces.

On the host, you can either write an application or, perhaps, use an existing one. In some cases for

example, an existing COM port or storage-based application might serve your purposes.

Examples are very useful during development. On the MSP430 MCU side, TI provides more than 25

examples of USB applications in the developers package.

On the host side, COM ports and storage are very common, and large amounts of information about these

are found online. In contrast, HID is not as common. For that reason, TI provides the Java HID Demo App

as an example and as a utility.

SLAA457A–September 2013–Revised May 2014 Starting a USB Design Using MSP430™ MCUs

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