Would be nice if you could explain how to disable eMMC on debian. I ran out of GPIO's in my project. Tried to use P9_19 and P9_20 (both I2C's) in the device tree overlay but since i did that the overlay doesn't work correctly anymore.
Am Sonntag, 18. Mai 2014 22:19:16 UTC+2 schrieb john3909: > > > From: Dhruv Vyas <dhruv....@gmail.com <javascript:>> > Reply-To: <beagl...@googlegroups.com <javascript:>> > Date: Sunday, May 18, 2014 at 2:42 AM > To: <beagl...@googlegroups.com <javascript:>> > 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 isn’t 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 beagleboard...@googlegroups.com <javascript:>. > 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 beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
