<div dir="ltr"><br><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature" data-smartmail="gmail_signature">---<br>crowd-funded eco-conscious hardware: <a href="https://www.crowdsupply.com/eoma68" target="_blank">https://www.crowdsupply.com/eoma68</a><br></div></div>
<br><div class="gmail_quote">On Wed, Feb 22, 2017 at 6:35 PM, Internet <span dir="ltr"><<a href="mailto:internet@devpi.de" target="_blank">internet@devpi.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p>The power issue is pretty tough I think. Do you want to allow
charging from both sides (12v dc jack and eoma-5v0)</p></div></blockquote><div><br></div><div>yes. </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div bgcolor="#FFFFFF" text="#000000"><p>or does the
power from the card only act as additional power for the system
(without charging and just taking the load off the battery)?</p></div></blockquote><div><br></div><div>no. an OTG cable into the EOMA68 Card should be capable of charging (not necessarily *running* the system as it's far too much current required). </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div bgcolor="#FFFFFF" text="#000000"><p> How
do you want to control the power switch (SY6280) and detect
whether the card is passive or active (taking power/providing
power)?</p></div></blockquote><div> usual OTG software detection, then communicated (quickly) to avoid any current bun-fights. OTG generates IRQs from the cable being plugged in (usual way) - the extra bit will be to ensure that the required GPIOs are pulled high/low - there's quite a few.</div><div><br></div><div>l.</div></div></div></div>