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Re: [Paparazzi-devel] USB bootloader

From: Dirk-Willem van Gulik
Subject: Re: [Paparazzi-devel] USB bootloader
Date: Sat, 28 Jun 2008 19:02:27 +0200

On 28 jun 2008, at 08:06, Scott Morken wrote:

The reason I want to do this is because my application code starting at 0x4000 also has USB functionality, and currently the only way to get it running is to unplug the device, change the bootload/application jumper and plug it back in. I was hoping to make an application where I can jump back to the bootloader for program updates, and then after the update the bootloader jumps to application and the application's USB stack initializes properly.

Any tips?

You should be able to have the device (not the host) ask for an (re)enumeration. I think that is possible without any further hardware. Basically that makes it drop off the bus for a short amount of time.


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