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.
