No way for me to tell what you may have done, but 1.8V is not good. Any chance you can provide more information like the pin number and connector you are using? What do you have connected to this pin? How is that device powered?
Gerald On Tue, Mar 22, 2016 at 6:47 AM, Walker Archer <warcher...@gmail.com> wrote: > I've been building a custom cape for a robotics project and one of the > chips I'm using is controlled via SPI. I've used an oscilloscope to > validate that the SPI is working as expected. However, two days ago I > noticed that the chip stopped responding and after scoping the SPI signal I > can see that the BBB is sending the SPI data pulses at 1.8v. The SPI > signal is still happening... and the clock signal is still at 3.3v. It's > just the SPI data line that is only peaking at 1.8v. > > So, I'm wondering if I've done something bad to my BBB or if I've somehow > triggered a feature that I don't know about yet. I'm attaching a photo of > the oscilloscope screen that shows the issue. > > -- > 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 beagleboard+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- Gerald ger...@beagleboard.org http://beagleboard.org/ gcol...@emprodesign.com -- 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 beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
