Pedro: I think I got lucky and the mux was already set to gpio. --Mark
On Tuesday, September 1, 2020 at 3:55:33 PM UTC-4 phfber...@gmail.com wrote: > Hi Mark. Great, thanks! > > Per my understanding, the Device Tree approach of > https://elinux.org/EBC_Exercise_17_Switching_a_GPIO_to_an_LED doesn't > include modifying user_leds_s0 (pinmux for user leds). Do you know why > isn't this needed? > > > Best Regards, > Pedro Bertoleti > > Em terça-feira, 1 de setembro de 2020 às 16:47:15 UTC-3, Mark A. Yoder > escreveu: > >> Your steps look right, but there is a simpler way to do them. Check out: >> https://elinux.org/EBC_Exercise_17_Switching_a_GPIO_to_an_LED >> >> No need to cross compile etc. >> >> --Mark >> >> On Tuesday, September 1, 2020 at 10:36:13 AM UTC-4 TJF wrote: >> >>> Hi! >>> >>> Forget about all that device tree trouble, use libpruio >>> <http://users.freebasic-portal.de/tjf/Projekte/libpruio/doc/html/index.html> >>> >>> instead. You can configure the pin and set the desired output state by a >>> single function call in your programm running at user space (no sudo >>> commands, no rebooting, ...) >>> >>> gpio_setValue(Io, P9_15, 1) // configure and set high >>>> >>> gpio_setValue(Io, P9_15, 0) // set low >>>> >>> >>> You'll have faster boot, less memory consumption, and your code executes >>> much faster (compared with sysfs GPIO control). >>> >>> You may want to check out some examples >>> <http://users.freebasic-portal.de/tjf/Projekte/libpruio/doc/html/ChaExamples.html> >>> . >>> >>> Regards >>> >> -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/5481c6eb-9b19-4efa-9028-7dbc197ae055n%40googlegroups.com.
