I'm thinking of migrating from AT90USB82 to an ATxmega32A4U. In order for the AT90USB82's factory-installed DFU bootloader to work, the part has to be given an 8 or 16MHz external crystal; nothing else. I understand from some feeble searching in this forum that the Xmega parts don't have preinstalled bootloaders, even if they have on-board USB. That's kind of disappointing, but I can install Atmel's DFU bootloader via ISP. I'd like to take advantage of the Xmega's higher clockrate capability, though. The introductory overview for the Xmega version of Atmel's DFU application speaks about customizing the app, but only in the sense of configuring it for which pin to use for its Vulcan Nerve Pinch on restart. Is it fairly easy to configure it for a particular clock speed?
Joined: Thu. Dec 20, 2007
Posts: 966 View posts
Location: Portland, Oregon, USA