On Tue, Nov 18, 2014 at 12:13 PM, Charles Steinkuehler <[email protected]> wrote: > I'm confused by the GPIO pin numbering shown on the Bone101 support page: > > http://beagleboard.org/Support/bone101 > > P9 pins 28-31 are listed as GPIO_120 through GPIO_123, which seems to be > off by 10. The schematic shows these as GPIO bank 3, pins 14-17, which > by my understanding should be: > > ( 32 * 3 ) + 14 = 96 + 14 = 110 > ...to... > ( 32 * 3 ) + 17 = 96 + 17 = 113 > > Other GPIO bank 3 pins (like P9 pin 27) are labeled as I would expect > (GPIO3 pin 19 = GPIO_115). > > Is the documentation on the Bone101 page wrong, or am I confused about > the kernel GPIO numbering scheme? > > Note: This all started with a bug report about pin numbers for the > universal overlay: > > https://github.com/cdsteinkuehler/beaglebone-universal-io/issues/18
Double check against these: https://github.com/derekmolloy/boneDeviceTree/tree/master/docs At one time i had the equation down, but derek's eye chart works better. ;) Regards, -- Robert Nelson http://www.rcn-ee.com/ -- 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.
