Possibly. Not sure if Linux would like that or not. I would think it would have to be a custom UBoot just for your use in that case.
Gerald On Mon, Apr 14, 2014 at 10:09 AM, <[email protected]> wrote: > 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]> 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]. >>> >>> 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. > -- 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.
