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	<title>Voltamp Media</title>
	
	<link>http://blog.voltampmedia.com</link>
	<description>Imagine. Design. Launch.</description>
	<lastBuildDate>Wed, 28 Dec 2011 07:27:17 +0000</lastBuildDate>
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		<title>Compiling Sphinx on Mac OS X</title>
		<link>http://feedproxy.google.com/~r/VoltampMedia/~3/ONTpCbVppAA/</link>
		<comments>http://blog.voltampmedia.com/2011/12/27/compiling-sphinx-on-mac-os-x/#comments</comments>
		<pubDate>Tue, 27 Dec 2011 10:42:23 +0000</pubDate>
		<dc:creator>Eric Cope</dc:creator>
				<category><![CDATA[Mac]]></category>
		<category><![CDATA[MySQL]]></category>
		<category><![CDATA[Sphinx]]></category>

		<guid isPermaLink="false">http://blog.voltampmedia.com/?p=189</guid>
		<description><![CDATA[We are looking into using Sphinx on a project and needed to get it installed on our local machines, Macbook Pros, for exploration. Sphinx does not ship Mac binaries, so we had to compile it. We had XCode previously installed. If you want the MySQL to connect, you need to download the source files to [...]]]></description>
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		<item>
		<title>PHP Implementation of Haversine Computation</title>
		<link>http://feedproxy.google.com/~r/VoltampMedia/~3/QHFdvDy1KB0/</link>
		<comments>http://blog.voltampmedia.com/2011/12/17/php-implementation-of-haversine-computation/#comments</comments>
		<pubDate>Sun, 18 Dec 2011 03:57:47 +0000</pubDate>
		<dc:creator>Eric Cope</dc:creator>
				<category><![CDATA[geocoding]]></category>
		<category><![CDATA[haversine]]></category>
		<category><![CDATA[PHP]]></category>

		<guid isPermaLink="false">http://blog.voltampmedia.com/?p=180</guid>
		<description><![CDATA[We needed to compute the distance between two points on the Earth using longitude and latitude from Google&#8217;s Geocode API service. We use PHP, but there was no reference to a PHP implementation of the Haversine Equation, so I made one. I needed miles, but if you need another unit, just replace $earth_radius with the [...]]]></description>
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		<item>
		<title>Making a Push Notification Server</title>
		<link>http://feedproxy.google.com/~r/VoltampMedia/~3/fHbMylt2V_c/</link>
		<comments>http://blog.voltampmedia.com/2011/12/08/making-a-push-notification-server/#comments</comments>
		<pubDate>Thu, 08 Dec 2011 07:57:24 +0000</pubDate>
		<dc:creator>Eric Cope</dc:creator>
				<category><![CDATA[PHP]]></category>
		<category><![CDATA[Push Notifications]]></category>

		<guid isPermaLink="false">http://blog.voltampmedia.com/?p=177</guid>
		<description><![CDATA[We had a need to test locally an endpoint of a SaaS Push Service. We did not want to rely on the SaaS for testing, so we needed a way to generate an equivalent push locally. This method requires a PECL extension, pecl_http. On a side note, I had to download the PHP source files [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>PHP Exceptions and CodeIgniter</title>
		<link>http://feedproxy.google.com/~r/VoltampMedia/~3/NIL9AJqeiKc/</link>
		<comments>http://blog.voltampmedia.com/2011/12/08/php-exceptions-and-codeigniter/#comments</comments>
		<pubDate>Thu, 08 Dec 2011 04:44:39 +0000</pubDate>
		<dc:creator>Eric Cope</dc:creator>
				<category><![CDATA[CodeIgniter]]></category>
		<category><![CDATA[exceptions]]></category>
		<category><![CDATA[PHP]]></category>

		<guid isPermaLink="false">http://blog.voltampmedia.com/?p=165</guid>
		<description><![CDATA[I&#8217;ve been toying around with PHP&#8217;s Exceptions for a number of years now. I never found a clean way to integrate them into my CodeIgniter codebases, until now. I learned about PHP&#8217;s SPL Exception library recently as well, so it was a bit of a motivator. I updated my models and libraries to throw exceptions, [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>PHPUnit’s CodeCoverage and CodeIgniter</title>
		<link>http://feedproxy.google.com/~r/VoltampMedia/~3/R3OGuYsfZko/</link>
		<comments>http://blog.voltampmedia.com/2011/12/04/phpunits-codecoverage-and-codeigniter/#comments</comments>
		<pubDate>Sun, 04 Dec 2011 08:07:58 +0000</pubDate>
		<dc:creator>Eric Cope</dc:creator>
				<category><![CDATA[Code Coverage]]></category>
		<category><![CDATA[PHP]]></category>
		<category><![CDATA[PHPUnit]]></category>

		<guid isPermaLink="false">http://blog.voltampmedia.com/?p=163</guid>
		<description><![CDATA[We have not figured out how to integrate PHPUnit well into our projects, especially when CI&#8217;s unit test library is so handy. However, I did take the time to try using PHPUnit&#8217;s CodeCoverage metric. However, in order to get it to work, I had to blacklist the CI system directory (the application directory is outside [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>Using ARM’s CMSIS DSP Library: arm_sqrt_q15</title>
		<link>http://feedproxy.google.com/~r/VoltampMedia/~3/mhqfZ_8A--w/</link>
		<comments>http://blog.voltampmedia.com/2011/09/27/using-arm%e2%80%99s-cmsis-dsp-library-arm_sqrt_q15/#comments</comments>
		<pubDate>Tue, 27 Sep 2011 04:40:52 +0000</pubDate>
		<dc:creator>Eric Cope</dc:creator>
				<category><![CDATA[ARM]]></category>
		<category><![CDATA[CMSIS]]></category>
		<category><![CDATA[DSP]]></category>

		<guid isPermaLink="false">http://blog.voltampmedia.com/?p=158</guid>
		<description><![CDATA[I continue the ARM CMSIS DSP series, this time demonstrating arm_sqrt_q15. This function takes the sqrt of a fractional input, and returns the value (by reference) and some error detection. Here is the function definition: &#8220;in&#8221; really is a Q Format of 1.15. 0 is represented as 0&#215;0000. 1 is represented as 0x7FFF. This means [...]]]></description>
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		<item>
		<title>Using ARM’s CMSIS DSP Library: arm_recip_q15</title>
		<link>http://feedproxy.google.com/~r/VoltampMedia/~3/G99h5cs6y-s/</link>
		<comments>http://blog.voltampmedia.com/2011/09/27/using-arms-cmsis-dsp-library-arm_recip_q15/#comments</comments>
		<pubDate>Tue, 27 Sep 2011 04:04:04 +0000</pubDate>
		<dc:creator>Eric Cope</dc:creator>
				<category><![CDATA[ARM]]></category>
		<category><![CDATA[CMSIS]]></category>
		<category><![CDATA[DSP]]></category>

		<guid isPermaLink="false">http://blog.voltampmedia.com/?p=152</guid>
		<description><![CDATA[I&#8217;ve begun using ARM&#8217;s free CMSIS DSP library on a project, but the documentation is quite sparse. So, I&#8217;ve started documenting how to use these functions as I learn by trial and error. The first function is: arm_recipt_q15. This function takes the reciprocal of a fixed point variable, in. The format of the input, in, [...]]]></description>
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		<slash:comments>0</slash:comments>
		<feedburner:origLink>http://blog.voltampmedia.com/2011/09/27/using-arms-cmsis-dsp-library-arm_recip_q15/</feedburner:origLink></item>
		<item>
		<title>Eliminating Facebook App Scroll Bars</title>
		<link>http://feedproxy.google.com/~r/VoltampMedia/~3/-uBkM1_w7Hk/</link>
		<comments>http://blog.voltampmedia.com/2011/09/07/eliminating-facebook-app-scroll-bars/#comments</comments>
		<pubDate>Wed, 07 Sep 2011 21:32:13 +0000</pubDate>
		<dc:creator>Eric Cope</dc:creator>
				<category><![CDATA[facebook development]]></category>
		<category><![CDATA[javascript]]></category>

		<guid isPermaLink="false">http://blog.voltampmedia.com/?p=144</guid>
		<description><![CDATA[Facebook makes it difficult to remove scroll bars from an App iFrame. Here is how I did it. I was posting a table, so I estimated what each row required, 55 pixels, what the header required: 225 pixels, and the 50 pixels of safety. Then, when I was done generating the content (using jquery), I [...]]]></description>
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		<slash:comments>0</slash:comments>
		<feedburner:origLink>http://blog.voltampmedia.com/2011/09/07/eliminating-facebook-app-scroll-bars/</feedburner:origLink></item>
		<item>
		<title>Git Error and File Rename</title>
		<link>http://feedproxy.google.com/~r/VoltampMedia/~3/O_ow3dDBkMw/</link>
		<comments>http://blog.voltampmedia.com/2011/09/07/git-error-and-file-rename/#comments</comments>
		<pubDate>Wed, 07 Sep 2011 05:00:03 +0000</pubDate>
		<dc:creator>Eric Cope</dc:creator>
				<category><![CDATA[git]]></category>

		<guid isPermaLink="false">http://blog.voltampmedia.com/?p=139</guid>
		<description><![CDATA[We use Git here to manage all file versioning, mostly because its awesome. However, every once in a while we get an error message that is too cryptic, even for us. We recently got this message while trying to commit a file: It took some googling and some introspection, but we finally figured it out. [...]]]></description>
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		<item>
		<title>Upgrading Samba</title>
		<link>http://feedproxy.google.com/~r/VoltampMedia/~3/b_qb_Tn5Sg0/</link>
		<comments>http://blog.voltampmedia.com/2011/08/22/upgrading-samba/#comments</comments>
		<pubDate>Tue, 23 Aug 2011 03:42:40 +0000</pubDate>
		<dc:creator>Eric Cope</dc:creator>
				<category><![CDATA[freebsd]]></category>
		<category><![CDATA[samba]]></category>

		<guid isPermaLink="false">http://blog.voltampmedia.com/?p=136</guid>
		<description><![CDATA[I recently upgraded our file server&#8217;s version of Samba to 3.5.x. I was running a much older version (I think 3.3.x). Anyways, this upgrade forced a regeneration of Samba passwords. The FreeBSD handbook shows the use of  smbpasswd&#8230; but notes the new way to generate passwords using pdbedit. to solve my problem, I moved the [...]]]></description>
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