When I manually wire a pull up resistor, I still am not able to detect a high signal using the methods I listed, though I can verify with a multimeter that P9.13 is high.
On Monday, May 11, 2020 at 3:17:36 PM UTC-6, John Allwine wrote: > > I'm trying to configure P9.13 on the Beaglebone AI as an input pull up, > but am not having any success. In the System Manual > <https://github.com/beagleboard/beaglebone-ai/wiki/System-Reference-Manual#p9.11-p9.13> > > it lists P9.13a as not being bound to a GPIO port, but P9.13b is bound to > GPIO6_12. This is the device tree overlay I'm using > <https://github.com/PocketNC/BeagleBoard-DeviceTrees/blob/pocketnc-ai-test/src/arm/am5729-beagleboneai-pocketnc-pro.dts#L56> > with > line 56 showing how I'm attempting to configure P9.13b (and P9.13a the line > above it). Am I doing something wrong in my device tree overlay? I've had > success configuring many other pins, but P9.13 is giving me trouble for > some reason. > > I'm testing it a couple ways: > 1) with sysfs > echo 172 > /sys/class/gpio/export > cat /sys/class/gpio/gpio172/value > > 2) with libgpio > gpioget gpiochip5 12 > > Both return a value of 0, when I'd expect it to be 1 (I don't have > anything wired to it). Any idea what I'm doing wrong? > -- 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]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/90909b3d-3482-494b-98db-4f1e342360ea%40googlegroups.com.
