When I wanted to automate some of my tests and prevent myself from having to reach the power supply, I looked for a product which would allow me to switch off the power of the device remotely. I then found Cleware which provides some really useful USB-Switches.
Archive for the ‘Linux’ Category
Controlling power supplies with USB
Wednesday, May 12th, 2010Maemo USB are going open source
Thursday, October 15th, 2009We are moving towards an open source development style so instead of pushing our code to mainline kernel tree after the project has finished, we will start working straight with linux-usb community and push our changes to mainline much more frequently.
Let's hope this new model helps us keeping more in touch with the USB community.
Our tree is available at http://gitorious.org/usb
USB Composite Gadget Framework
Sunday, May 25th, 2008Hi all,
Let's take a look at the brand new, yet-to-be-merged USB Composite Gadget Framework.
The framework was introduced by Linux USB Developer David Brownell and, thanks to his great work, we're gonna be able to reuse what we now call usb function drivers into another entities, combining them to create a usb composite gadget.
Quoting Dave himself:
We want to split most of the current gadget drivers into reusable/combinable "usb_function" entities, making it easier to set up composite and multi-configuration gadgets.
Musb driver is going to mainline
Saturday, May 24th, 2008Hello all,
Finally musb/tusb driver is going to mainline 
We still have a few stuff to fix and I'm taking care of that but we're planning to push it to release 2.6.26 . From the day musb gets merged to mainline, the main development of it will be moved from linux-omap to linux-usb mailing list, which will allow more usb gurus to review the patches.
Most likely the driver will get more and more improvements.
Again,
Thanks to everybody that have been helping musb so far. Here's a git shortlog of those who have been helping us:
1 Alan Stern
2 Anand Gadiyar
2 Andrzej Zaborowski
4 Bryan Wu
51 David Brownell
5 Dirk Behme
28 Felipe Balbi
2 Hunyue Yau
7 Kevin Hilman
182 Tony Lindgren
3 Vikram Pandita
Please follow this thread in linux-usb mailing list for more details.
Upgrading U-boot via serial
Thursday, December 6th, 2007U-boot is an open source bootloader. This post is here because I had a problem with U-boot where I couldn't update it using ethernet.
It's not that difficult to use serial line for u-boot upgrading, as long as you have a "working" u-boot flashed in your board, you can always use loady or loadb to download binary image into your board's RAM.
UWB Security and OMAP
Wednesday, November 14th, 2007Hello all,
When dealing with wireless communications we must protect our information by using cryptographic techniques. UWB is not different from any other wireless connection and we must take care of its security as well. There are already a bunch of cryptographic algorithms out there but which algorithm was chosen to be used with UWB ? Is it fast and secure enough ? Let's take a look at UWB Security features.
HNP: Host Negotiation Protocol
Thursday, November 8th, 2007We already discussed a bit about it and we know this is a feature to allow role switching in otg sessions without changing the cable. But what does this really mean? Who handle this? Which device(s) already support it? How should I know that my device supports HNP? Is there any public code for that?
That's what we're taking a look today. Take a look by clicking at the next link 
Linux-UWB Project
Thursday, November 8th, 2007Linux-UWB Project aims to develop a complete Ultra-Wide-Band stack for Linux Kernel. They're also working on WUSB and WiNET.
Part of the code is already done and hosted in a Mercurial Tree (it should be git :-p) available in: http://bughost.org/repos.hg/uwb.hg
Anyone is invited to join this work by pointing to http://linuxuwb.org, checking out the code and looking for TODO and FIXME strings in source code.
The person who's in front of the Project is Iñaky Perez-Gonzales from Intel.
There's not much to say here about the project, all you should do now is point to their website, clone the code and start contributing.
SRP Overview
Wednesday, November 7th, 2007Hello all,
What's SRP or Session Request Protocol? What is this for? How does this happen? How to implement it? How can I see it working?
These are the questions we're trying to answer in this post. Our first piece of code will come in this post. Like I said before, all codes are based on Linux OMAP git tree and MUSB driver.
OTG Overview
Wednesday, November 7th, 2007Hi all,
Let's start to take a look in USB OTG (On-the-go) functionalities. Of course, I'll focus on linux and MUSB driver which you can find in linux-omap git tree. In this first post, just a quick overview of the specs and its features.