<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""><div><blockquote type="cite" class=""><div class="">On 2015-July-28, at 23:31, Angelo Fraietta <<a href="mailto:newsgroups@smartcontroller.com.au" class="">newsgroups@smartcontroller.com.au</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">I just tried writing to the pins using the methods in the interrupt example<div class=""><br class=""></div><div class="">What is very strange is that pin P9-15 toggles whether I write to GPIO1_16 or GPIO2_0, which may be why the read is not correct on it</div><div class=""><br class=""></div><div class="">So in short, </div><div class=""><div style="font-size:12.8000001907349px" class="">I found that GPIO1_0 to GPIO1_3 did not read or write</div><div style="font-size:12.8000001907349px" class="">I found that GPIO1_30 and GPIO1_31 <span style="font-size:12.8000001907349px" class="">did not read or write</span><br class=""></div></div></div></div></blockquote><div><br class=""></div><div>All routed to the eMMC chip U13. It is strange that GPIO1_4 through 7 work, perhaps the eMMC has been programmed in 4-bit mode.</div><br class=""><blockquote type="cite" class=""><div class=""><div dir="ltr" class=""><div class=""><div style="font-size:12.8000001907349px" class="">I found that GPIO0_4 and GPIO0_5 <span style="font-size:12.8000001907349px" class="">did not read or write</span></div></div><div style="font-size:12.8000001907349px" class=""><span style="font-size:12.8000001907349px" class=""><br class=""></span></div></div></div></blockquote>Connected to I2C board id chip U7<br class=""><div><br class=""></div><br class=""><blockquote type="cite" class=""><div class=""><div dir="ltr" class=""><div style="font-size:12.8000001907349px" class=""><span style="font-size:12.8000001907349px" class="">P9-15 writes whether writing to </span><span style="font-size:small" class="">GPIO1_16 or GPIO2_0</span></div></div></div></blockquote><br class=""></div><div>Yes, this makes sense. According to the schematics, 1_16 and 2_0 are wire-or-ed together with R160 and R161 and routed to P9-15.</div><div><br class=""></div><div><br class=""></div>A</body></html>