Did you fix this problem? Because I m facing the same undesired behavior. Thanks
Am Sonntag, 28. Juni 2015 22:04:07 UTC+2 schrieb andrew otis: > > Hey Everyone, > > I'm a n00b so please excuse me, but I have been trying to get my BBB to > boot with no power on P9-pin 11. > > Controlling them through /sys/class/export works fine but even if I write > a bash script to disable power, it still stays on for about 5 seconds > before my script runs to cut power. > > So, obviously I learned bash scripts are not the way to go here. > > Next, I tried exploring making the config changes in the boot loader. I've > modified beagle.c in u-boot source and commented out this entire section: > > /* Set GPIO states before they are made outputs > writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1, > &gpio6_base->setdataout); > writel(GPIO31 | GPIO29 | GPIO28 | GPIO22 | GPIO21 | > GPIO15 | GPIO14 | GPIO13 | GPIO12, > &gpio5_base->setdataout); */ > > /* Configure GPIOs to output > writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), > &gpio6_base->oe); > writel(~(GPIO31 | GPIO29 | GPIO28 | GPIO22 | GPIO21 | > GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe); */ > > Recompiled, put MLO and u-boot.img in my /boot/uboot path but it still > doesn't seem to work. > > Again, I apologize for the n00bness, but would someone that has experience > doing this kind of thing be able to at least point me in the right > direction? > > are there other methods I can use in this $gpio5_base? > > End goal is to be able to hook up my multimeter to pin 11 on P9, boot the > device and never see voltage, until I want it (I got that part down) > -- 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. For more options, visit https://groups.google.com/d/optout.
