From: Dhruv Vyas <[email protected]> Reply-To: <[email protected]> Date: Sunday, May 18, 2014 at 2:42 AM To: <[email protected]> Subject: [beagleboard] Can "allocated pins" on BBB be used as GPIOs ?
> Hello, > > I recently started working on my BBB A6A. I went through necessary getting > started guides and it works like a charm. Now as a part of my project, I need > to use some of the GPIOs on P8/P9 header. While googling how to use them as a > GPIO, and how to set pinmux and etc, I went through this guide. > http://derekmolloy.ie/gpios-on-the-beaglebone-black-using-device-tree-overlays > / and he explained everything very clearly. > > Now my question is : is there any way i can use allocated pins as GPIOs other > than available pins ? If yes, how ? If no, why ? > > For example, P9_19 and P9_20 are Allocated to (Group: pinmux_i2c2_pins) and > hence it can not be used as GPIOs ? If pins are also connected to circuitry on the board that cannot be disabled then you cannot use those pins for GPIO. For example, pins used for the eMMC can be used for GPIO as long as eMMC is disabled. Same for LCD pins, but then you cannot use LCD or HDMI. I2C2 isn¹t connected to other circuity on the board so you can use it for GPIO. Regards, John > > > Thanks. > > > > > -- > 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. -- 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.
