25C3 - 1.4.2.3

25th Chaos Communication Congress
Nothing to hide

Speakers
Travis Goodspeed
Schedule
Day Day 3 (2008-12-29)
Room Saal 2
Start time 12:45
Duration 01:00
Info
ID 2681
Event type lecture
Track Making
Language used for presentation en
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Repurposing the TI EZ430U

with msp430static, solder, and syringe

USB devices are sometimes composed of little more than a microcontroller and a USB device controller. This lecture describes how to reprogram one such device, greatly expanding its potential.

At only twenty dollars, the Texas Instruments EZ430U is a bargain of an in-circuit debugger for the MSP430 microcontroller. The board itself is composed of little more than an MSP430 and a USB to Serial controller. The board's JTAG fuse is unblown, and full schematics are included in public documentation.

This lecture will discuss the use of the EZ430U, not as a debugging tool, but as a development platform in and of itself. Topics will include the writing of replacement firmware, analysis of the default firmware, reprogramming the USB to Serial controller, and potential target applications.