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		<title>LeafLabs Garden &#187; Topic: Possible to use JTAG pins as GPIOs?</title>
		<link>http://forums.leaflabs.com/topic.php?id=3019</link>
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		<pubDate>Fri, 22 Jan 2016 00:06:49 +0000</pubDate>
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		<item>
			<title>Mars Saxman on "Possible to use JTAG pins as GPIOs?"</title>
			<link>http://forums.leaflabs.com/topic.php?id=3019#post-13747</link>
			<pubDate>Wed, 12 Sep 2012 16:47:40 +0000</pubDate>
			<dc:creator>Mars Saxman</dc:creator>
			<guid isPermaLink="false">13747@http://forums.leaflabs.com/</guid>
			<description>&#60;p&#62;Of course it's no problem if I'm coding on the bare metal, which is why I am thinking to do it - I just don't know enough about libmaple's internals to know whether it would find such usage problematic.
&#60;/p&#62;</description>
		</item>
		<item>
			<title>x893 on "Possible to use JTAG pins as GPIOs?"</title>
			<link>http://forums.leaflabs.com/topic.php?id=3019#post-13743</link>
			<pubDate>Wed, 12 Sep 2012 16:20:13 +0000</pubDate>
			<dc:creator>x893</dc:creator>
			<guid isPermaLink="false">13743@http://forums.leaflabs.com/</guid>
			<description>&#60;p&#62;What's a problem ? Use gpio remap.
&#60;/p&#62;</description>
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		<item>
			<title>Mars Saxman on "Possible to use JTAG pins as GPIOs?"</title>
			<link>http://forums.leaflabs.com/topic.php?id=3019#post-13738</link>
			<pubDate>Wed, 12 Sep 2012 14:36:40 +0000</pubDate>
			<dc:creator>Mars Saxman</dc:creator>
			<guid isPermaLink="false">13738@http://forums.leaflabs.com/</guid>
			<description>&#60;p&#62;I am working on a project which would be well suited for the STM32F103. I would like to use a bunch of Maple boards, since the programming environment is so nice, but the Maple board itself only offers access to 37 of the STM's GPIOs, and my project needs at least 40 (41 would be nice).&#60;/p&#62;
&#60;p&#62;My idea is to use the JTAG pins as additional IOs: PA13-PA15 and PB3-PB4.&#60;/p&#62;
&#60;p&#62;Before I go digging around in libmaple trying to figure out how it would react to such a usage, has anyone tried this? Any stories of success or failure to relate?
&#60;/p&#62;</description>
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