Eridani is a LM3S3651 based general purpose development board with USB Host/Device/OTG. You can buy one here. This documentation should help you use it effectively. All of the details on how to setup toolchains for this board are filed under getting started.

LM3S3651 Manual
LM3S3651 Rev A0 Errata
StellarisWare Driver Library User's Guide
LM3S3651 Luminary Micro info page (All docs relevant to LM3S3651)
StellarisWare Downloads (All StellarisWare Documents are downloads currently can be found here in a more centralized fashion than Ti's main site, a copy of SW-LM3S-6734 and LMFlashProgrammer-1154 are the most important).

products knowledge docs

Texas Instruments Resources: