On Tuesday, April 7, 2015 at 5:36:55 PM UTC-4, Graham wrote: > The GPIO pins on most processors, are open inputs until configured. > So a weak pull up resistor to +3.3V (not the switched +3.3V) on the TX > line between the Sitara pin and the MAX3232 input would likely fix your > problem. > Once configured, the TX line will overpower the weak pull up resistor. >
That's what I was afraid of. Sadly, the connected peripheral doesn't respond well to the break (I'm guessing it's missing it's pullups for the RX line). I did try rebuilding u-boot with UART5 enabled in the hope that it would get configured sooner, but it appears the break happens immediately at power up before *anything* has happened. I shall try a 10K pulllup on the TX line. Thanks for the feedback! -W -- 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.
