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	<title>blog.felipebalbi.com</title>
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	<link>http://blog.felipebalbi.com</link>
	<description>Felipe Balbi&#039;s Blog</description>
	<lastBuildDate>Wed, 12 May 2010 08:59:19 +0000</lastBuildDate>
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		<title>Controlling power supplies with USB</title>
		<link>http://blog.felipebalbi.com/2010/05/12/controlling-power-supplies-with-usb/</link>
		<comments>http://blog.felipebalbi.com/2010/05/12/controlling-power-supplies-with-usb/#comments</comments>
		<pubDate>Wed, 12 May 2010 08:55:56 +0000</pubDate>
		<dc:creator>Felipe Balbi</dc:creator>
				<category><![CDATA[Linux]]></category>
		<category><![CDATA[USB]]></category>
		<category><![CDATA[cleware]]></category>
		<category><![CDATA[libusb]]></category>

		<guid isPermaLink="false">http://blog.felipebalbi.com/?p=52</guid>
		<description><![CDATA[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.

After spending some time trying to figure out how [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Maemo USB are going open source</title>
		<link>http://blog.felipebalbi.com/2009/10/15/maemo-usb-are-going-open-source/</link>
		<comments>http://blog.felipebalbi.com/2009/10/15/maemo-usb-are-going-open-source/#comments</comments>
		<pubDate>Thu, 15 Oct 2009 19:32:15 +0000</pubDate>
		<dc:creator>Felipe Balbi</dc:creator>
				<category><![CDATA[Linux]]></category>
		<category><![CDATA[maemo]]></category>
		<category><![CDATA[open source]]></category>
		<category><![CDATA[usb]]></category>

		<guid isPermaLink="false">http://blog.felipebalbi.com/?p=49</guid>
		<description><![CDATA[We 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 [...]]]></description>
		<wfw:commentRss>http://blog.felipebalbi.com/2009/10/15/maemo-usb-are-going-open-source/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>USB Composite Gadget Framework</title>
		<link>http://blog.felipebalbi.com/2008/05/25/usb-composite-gadget-framework/</link>
		<comments>http://blog.felipebalbi.com/2008/05/25/usb-composite-gadget-framework/#comments</comments>
		<pubDate>Sat, 24 May 2008 22:56:11 +0000</pubDate>
		<dc:creator>Felipe Balbi</dc:creator>
				<category><![CDATA[Linux]]></category>
		<category><![CDATA[USB]]></category>
		<category><![CDATA[composite]]></category>
		<category><![CDATA[framework]]></category>
		<category><![CDATA[gadget]]></category>
		<category><![CDATA[usb]]></category>

		<guid isPermaLink="false">http://blog.felipebalbi.com/?p=44</guid>
		<description><![CDATA[We are happy to announce the USB Composite Gadget Framework. This new framework will help us writing reusable and combinable entities (called usb_functions) for creating a usb composite gadget.]]></description>
		<wfw:commentRss>http://blog.felipebalbi.com/2008/05/25/usb-composite-gadget-framework/feed/</wfw:commentRss>
		<slash:comments>2</slash:comments>
		</item>
		<item>
		<title>Musb driver is going to mainline</title>
		<link>http://blog.felipebalbi.com/2008/05/24/musb-driver-is-going-to-mainline/</link>
		<comments>http://blog.felipebalbi.com/2008/05/24/musb-driver-is-going-to-mainline/#comments</comments>
		<pubDate>Sat, 24 May 2008 19:00:23 +0000</pubDate>
		<dc:creator>Felipe Balbi</dc:creator>
				<category><![CDATA[Linux]]></category>
		<category><![CDATA[OTG]]></category>
		<category><![CDATA[USB]]></category>
		<category><![CDATA[musb]]></category>

		<guid isPermaLink="false">http://blog.felipebalbi.com/?p=43</guid>
		<description><![CDATA[Musb driver is finally going to mailine. The plan is to merge it for 2.6.26]]></description>
		<wfw:commentRss>http://blog.felipebalbi.com/2008/05/24/musb-driver-is-going-to-mainline/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>git&#8217;s goodies: git format-patch &#8211;cover-letter</title>
		<link>http://blog.felipebalbi.com/2008/03/27/gits-goodies-git-format-patch-cover-leter/</link>
		<comments>http://blog.felipebalbi.com/2008/03/27/gits-goodies-git-format-patch-cover-leter/#comments</comments>
		<pubDate>Thu, 27 Mar 2008 13:11:37 +0000</pubDate>
		<dc:creator>Felipe Balbi</dc:creator>
				<category><![CDATA[GIT]]></category>
		<category><![CDATA[cover-leter]]></category>
		<category><![CDATA[git]]></category>
		<category><![CDATA[patch]]></category>

		<guid isPermaLink="false">http://felipebalbi.com/blog/?p=42</guid>
		<description><![CDATA[Sometimes we have to send patch series and it's always useful to add a cover letter (or cover email) explaining what your series is implementing/fixing.
Newest git (currently only on git's git tree) provides a new format-patch option to generate the cover leter for you. In the cover leter git adds shortlog and diffstat, you only [...]]]></description>
		<wfw:commentRss>http://blog.felipebalbi.com/2008/03/27/gits-goodies-git-format-patch-cover-leter/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>git-push and ssh-keys</title>
		<link>http://blog.felipebalbi.com/2008/01/03/git-push-and-ssh-keys/</link>
		<comments>http://blog.felipebalbi.com/2008/01/03/git-push-and-ssh-keys/#comments</comments>
		<pubDate>Thu, 03 Jan 2008 21:01:40 +0000</pubDate>
		<dc:creator>Felipe Balbi</dc:creator>
				<category><![CDATA[GIT]]></category>
		<category><![CDATA[git]]></category>
		<category><![CDATA[key]]></category>
		<category><![CDATA[ssh]]></category>

		<guid isPermaLink="false">http://felipebalbi.com/blog/?p=41</guid>
		<description><![CDATA[Creating several ssh accounts for allowing push access to developers on a project is, at least, a waste of time and a possible security hole.
Instead of that, let's see how to manage such users using only one user "git" and several ssh-keys for allowing such push access.
 First of all, create only one user called [...]]]></description>
		<wfw:commentRss>http://blog.felipebalbi.com/2008/01/03/git-push-and-ssh-keys/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Building an arm-cross-gnu-toolchain</title>
		<link>http://blog.felipebalbi.com/2007/12/21/building-an-arm-cross-gnu-toolchain/</link>
		<comments>http://blog.felipebalbi.com/2007/12/21/building-an-arm-cross-gnu-toolchain/#comments</comments>
		<pubDate>Fri, 21 Dec 2007 17:06:28 +0000</pubDate>
		<dc:creator>Felipe Balbi</dc:creator>
				<category><![CDATA[ARM]]></category>
		<category><![CDATA[GCC]]></category>
		<category><![CDATA[binutils]]></category>
		<category><![CDATA[cross]]></category>
		<category><![CDATA[gnu]]></category>
		<category><![CDATA[newlib]]></category>
		<category><![CDATA[toolchain]]></category>

		<guid isPermaLink="false">http://felipebalbi.com/blog/?p=40</guid>
		<description><![CDATA[Building an arm-cross-gnu-toolchain can be somewhat painful. I'm posting here how I could achieve this after reading lots of documents over the web.
This will be helping me keeping up-to-date with binutils and gcc versions when building arm kernels  

Requirements:

binutils - http://www.gnu.org/software/binutils/
GCC -  http://gcc.gnu.org/
Newlib - http://sourceware.org/newlib/

To achieve this we must start by building binutils.
Building [...]]]></description>
		<wfw:commentRss>http://blog.felipebalbi.com/2007/12/21/building-an-arm-cross-gnu-toolchain/feed/</wfw:commentRss>
		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>Housekeeping your git repository</title>
		<link>http://blog.felipebalbi.com/2007/12/19/housekeeping-your-git-repository/</link>
		<comments>http://blog.felipebalbi.com/2007/12/19/housekeeping-your-git-repository/#comments</comments>
		<pubDate>Wed, 19 Dec 2007 17:15:06 +0000</pubDate>
		<dc:creator>Felipe Balbi</dc:creator>
				<category><![CDATA[GIT]]></category>

		<guid isPermaLink="false">http://felipebalbi.com/blog/?p=39</guid>
		<description><![CDATA[Housekeeping a git repository is useful to make it smaller and faster.  Git has a lot of tools to allow you optimizing your git repository. Let's take a look on a few of them and see what they do.

First we have to check where the "problems" are. To do this we use git-fsck:
$ git-fsck
dangling [...]]]></description>
		<wfw:commentRss>http://blog.felipebalbi.com/2007/12/19/housekeeping-your-git-repository/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Upgrading U-boot via serial</title>
		<link>http://blog.felipebalbi.com/2007/12/06/upgrading-u-boot-via-serial/</link>
		<comments>http://blog.felipebalbi.com/2007/12/06/upgrading-u-boot-via-serial/#comments</comments>
		<pubDate>Thu, 06 Dec 2007 22:34:45 +0000</pubDate>
		<dc:creator>Felipe Balbi</dc:creator>
				<category><![CDATA[Linux]]></category>
		<category><![CDATA[U-boot]]></category>

		<guid isPermaLink="false">http://felipebalbi.com/blog/?p=38</guid>
		<description><![CDATA[U-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 [...]]]></description>
		<wfw:commentRss>http://blog.felipebalbi.com/2007/12/06/upgrading-u-boot-via-serial/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Efficient C for ARM processors &#8211; PART I</title>
		<link>http://blog.felipebalbi.com/2007/12/05/efficient-c-for-arm-processors-part-i/</link>
		<comments>http://blog.felipebalbi.com/2007/12/05/efficient-c-for-arm-processors-part-i/#comments</comments>
		<pubDate>Wed, 05 Dec 2007 17:33:11 +0000</pubDate>
		<dc:creator>Felipe Balbi</dc:creator>
				<category><![CDATA[ARM]]></category>

		<guid isPermaLink="false">http://felipebalbi.com/blog/?p=37</guid>
		<description><![CDATA[ARM is an architecture 32-bit RISC based. Which means you have to always load values to its internal registers before working with those values.
Also, it expects data access to be 32-bit aligned. Unaligned access in ARM aren't denied, but causes extra overhead on code execution.
On this first part of this series, we'll see that int [...]]]></description>
		<wfw:commentRss>http://blog.felipebalbi.com/2007/12/05/efficient-c-for-arm-processors-part-i/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
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