To me, this is the best starting document: http://www.element14.com/community/community/designcenter/single-board-computers/next-gen_beaglebone/blog/2013/05/22/bbb--working-with-the-pru-icssprussv2
If I remember right, to set p8_12: SET r30.t14 // p8_12 set and to clear: CLR r30.t14 // p8_12 clear Like shabaz says from Element 14, the 0 from r30 looks like an "O" for output, while the 1 from r31 looks like an "i" for input. So, r30 is generally for output and r32 is generally input (bits 0..29). There are other things you can do with r30/31, but for gpio, they're input and output. The pinmux for the dts file is 0x034 0x6 // p8_12, mode 6, pulldown if I remember right. For pinmux/device tree info, you could see Derek Molloy's information on dts: https://github.com/derekmolloy/boneDeviceTree/tree/master/docs. Regards, Rene -- 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.