It is in the Datasheet. Regards, John
> On Dec 15, 2015, at 12:52 PM, Bill Gray <[email protected]> wrote: > > Gerald, > > Thanks so much. > > How interesting! I suppose I can just cold boot the BBB and see which pins > are where to figure out where things start, but I would love to read up more > on this given that my hardware could get bricked if something were to change. > > Since I got your reply I've been pouring over the Technical Reference Manual, > but I am not able to find a discussion of default pin states anywhere... > could you throw me another clue to where I can find this info? > > Thanks again. > > Bill > > On Tuesday, December 15, 2015 at 11:35:20 AM UTC-8, Gerald wrote: > The datasheet tells you the default for all the pins on power up. Some are > high and some are low. Until the SW changes that, they stay and the preset > levels. > > http://www.ti.com/product/am3358 <http://www.ti.com/product/am3358> > > > Gerald > > On Tue, Dec 15, 2015 at 12:04 PM, Bill Gray <[email protected] <javascript:>> > wrote: > Hi, > > I'm developing a system that uses PRU 1 to send a PWM to a switched mode > power converter. > > When I first turn the system on, I want the PWM signal to be low. If the pin > is high, I will pretty much surely blow my mosfets as current surges through > my circuit. > > For some reason, when I first turn things on the pin runs to high... I'm not > sure why. > > This is before I start messing around with the device tree or anything. Cold > boot. I apply power and even before the LEDs light up I can see that the pin > in question runs high. > > Is there anyway I can control this behavior? > > Thanks, > > Bill > > -- > For more options, visit http://beagleboard.org/discuss > <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 > <https://groups.google.com/d/optout>. > > > > -- > Gerald > > [email protected] <javascript:> > http://beagleboard.org/ <http://beagleboard.org/> > > -- > For more options, visit http://beagleboard.org/discuss > <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] > <mailto:[email protected]>. > For more options, visit https://groups.google.com/d/optout > <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.
