https://wiki.geekworm.com/index.php?action=history&feed=atom&title=CommentStreams%3AE49eb39029ab700b21d69c0b0bb60b87CommentStreams:E49eb39029ab700b21d69c0b0bb60b87 - Revision history2026-07-27T03:38:30ZRevision history for this page on the wikiMediaWiki 1.43.8https://wiki.geekworm.com/index.php?title=CommentStreams:E49eb39029ab700b21d69c0b0bb60b87&diff=33566&oldid=prev82.68.20.62: Migrated comment #40812023-10-17T04:30:31Z<p>Migrated comment #4081</p>
<p><b>New page</b></p><div>Is there any documentation available for the GPIOs used by this board. Specifically, I would like to know the functions of the GPIOs related to power management. As far as I can tell, it's something along these lines:<br />
<br />
GPIO17 [OUT, active high] - Set to indicated OS boot complete?<br />
GPIO27 [OUT, active high] - Request power off.<br />
GPIO4 [IN, active high] - Shutdown requested.<br />
<br />
It seems like GPIO17 needs to be set for GPIO4 to have any function. GPIO27 seems to have different behaviour depending on whether the power button has been pushed.<br />
<br />
Could someone clarify exactly how the power management GPIO interface is supposed to work? There are clearly power LED blink sequences involved as well that aren't document anywhere. A datasheet for the power management IC would be greatly appreciated.<!-- migrated from Comments; original IP: 82.68.20.62 --></div>82.68.20.62