On Thursday, March 12, 2015 at 12:36:33 PM UTC-4, Enoch wrote: > Is there some /etc/init.d script or equivalent to manipulate the pin mux? > If not, links to where to start dealing with the source would be > appreciated. >
You need a DTB with the UARTs enabled. See: https://github.com/RobertCNelson/dtb-rebuilder/tree/3.14-ti In particular, for ttyO4 you'll want to look at: https://github.com/RobertCNelson/dtb-rebuilder/blob/3.14-ti/src/arm/am335x-boneblack-ttyO4.dts The steps are: git clone https://github.com/RobertCNelson/dtb-rebuilder.git cd dtb-rebuilder git checkout 3.14-ti make src/arm/am335x-boneblack-ttyO4.dtb cp src/arm/am335x-boneblack-ttyO4.dtb /boot/dtbs/`uname -r`/ Then you'll need to edit /boot/uEnv.txt and add: dtb=am335x-boneblack-ttyO4.dtb Then reboot; check dmesg to make sure that the pinmux-helper has properly set up the pins for uart mode. -W -- 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 [email protected]. For more options, visit https://groups.google.com/d/optout.
