I, too, am wondering about the best way to provide power to the board and to a device connected to USB1 as host. Here is how I learned to hook up a micro-b breakout to USB1 and also how I intend to provide power to the board. The problem is that there is no measured voltage at USB1:
<https://lh3.googleusercontent.com/-XyHjxbobnnY/Wg3xGzyvNcI/AAAAAAAAATo/u1ufBwtum9c4KA6T6zjnu38x4cwwQ3TNQCLcBGAs/s1600/PocketBeagle_microUSB_1.png> I was wondering if I could just power the USB1 device from P1_24 SYS VOUT (which does have power when board is supplied by P1_01 SYS VIN) like this: <https://lh3.googleusercontent.com/-l4RYr7WmaGU/Wg3xqYECajI/AAAAAAAAATw/ipK3CZmhG18cieC-bnMLV04PfPBl_hRRACLcBGAs/s1600/PocketBeagle_microUSB_2.png> Would it be harmful to do it this way? Are there better ways to accomplish this? Thanks! -- Will Bain On Sunday, November 5, 2017 at 6:59:39 PM UTC-7, Graham wrote: > > Further research, looking at the Eagle board and schematic files for the > PB, it appears that USB0.VIN and USB1.VIN are both directly connected to > VIN.USB > Which explains why I had no power on my USB1 host port when connected like > the Fritzing diagram, since I am powering from VIN currently. > > So the question becomes,,, > What is the best way to power USB1 VBUS as a host if I don't know in > advance whether the customer application will run from VIN or VIN.USB? > > --- Graham > > == > > On Sunday, November 5, 2017 at 6:58:06 PM UTC-6, Graham wrote: >> >> I note that there is a PocketBeagle pin P1-7 named USB1-VIN. >> >> I don't find any connection on the PB schematic, other than to P1-7. >> >> It was connected externally in all of the USB1 host discussions and >> Fritzing diagrams. >> >> The name would imply that it is a way to deliver power to the board when >> USB1 has an external 5 Volt power source. >> >> I guess the basic question is whether this needs to be used/connected >> when USB1 is functioning as a host. >> >> --- Graham >> >> == >> > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/0af0e0fc-ea86-45bc-8885-9ed6b3e789be%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
