Also, I'm not exactly an EE, but the one EE I do know, seems to prefer using external pull up/down resistors. Why, I'm not sure, but perhaps someone who is an EE can explain why.
On Fri, May 13, 2016 at 10:19 AM, William Hermans <[email protected]> wrote: > *Are pull up resistors required for the GPIO pins when used as inputs or >> as outputs for the beaglebone black? I am using the beaglebone to drive a >> few n-channel MOSFETs. Thanks!* > > > Pull up/down resistors are typically "required" by the circuit. In your > case where you're using a device that tends to be used as a switch. Leaving > the circuit floating can cause unexpected behavior. > > So, is it "required" ? No. Is it desired? Yes. > > On Fri, May 13, 2016 at 9:14 AM, Chad Baker <[email protected]> wrote: > >> The AM3358 has internal pullup/pulldown resistors available for GPIO >> inputs. These can be enabled using the universal-io >> "https://github.com/cdsteinkuehler/beaglebone-universal-io"; >> <https://github.com/cdsteinkuehler/beaglebone-universal-io>. If you are >> using a current version of Debian, the device tree should already be >> included. The github overview shows how to use config-pin, the command >> "config-pin -h" shows how to engage the pullup/pulldown resistors. >> Chad >> >> >> On 5/13/16 10:48 AM, [email protected] wrote: >> >> Are pull up resistors required for the GPIO pins when used as inputs or >> as outputs for the beaglebone black? I am using the beaglebone to drive a >> few n-channel MOSFETs. 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]. >> To view this discussion on the web visit >> <https://groups.google.com/d/msgid/beagleboard/81b4dd20-bdad-4034-b024-d71f1b19c71b%40googlegroups.com?utm_medium=email&utm_source=footer> >> https://groups.google.com/d/msgid/beagleboard/81b4dd20-bdad-4034-b024-d71f1b19c71b%40googlegroups.com >> . >> For more options, visit https://groups.google.com/d/optout. >> >> >> >> -- >> Chad Baker >> Professor Emeritus >> Electrical and Computer Engineering >> Christian Brothers [email protected] >> >> -- >> 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]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/beagleboard/5735FD57.7070009%40cbu.edu >> <https://groups.google.com/d/msgid/beagleboard/5735FD57.7070009%40cbu.edu?utm_medium=email&utm_source=footer> >> . >> >> 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]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CALHSORpLNKC0ch2GEoXDnrOb7dtuF37PQHOGUKw9cQgFoP%2B-5w%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
