Dear Gerald, Isn't it possible to set the IO's in the U-boot? before the kernel is started. This would be fast enough.
Regards, Maarten Op maandag 14 april 2014 16:40:16 UTC+2 schreef Gerald: > > Read the datasheet for the default state of each pin on power up. > > http://www.ti.com/product/am3358 > > These cannot be changed. Once the SW is loaded, it can set the pins to > whatever function it supports. > > Gerald > > > > On Mon, Apr 14, 2014 at 9:37 AM, <[email protected] <javascript:>>wrote: > >> Dear Reader, >> >> I have a question about the following problem. >> On the PCB I designed I use the BBB for setting some pumps and valves. >> When the system starts up the first seconds the IO pins are not logic 1 >> or 0. >> Is it possible to set the GPIO's in U-boot before starting up the kernel >> and how can I do this? >> >> Thanks, >> >> Maarten >> >> -- >> 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] <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 [email protected]. For more options, visit https://groups.google.com/d/optout.
