Hi, I've a PocketBeagle running the Debian 9.9 2019-08-03 4GB SD IoT image, updated following the directions in https://beagleboard.org/upgrade
I've wired up USB1 on a breadboard, and when plugging in a high-speed USB device (wifi or ethernet adapter), dmesg shows:
[ 170.215041] musb-hdrc musb-hdrc.1: VBUS_ERROR in a_wait_bcon (89, <AValid), retry #1, port1 00000104
When plugging in a low-speed USB device (keyboard), dmesg shows:
[ 232.250630] usb 2-1: new low-speed USB device number 6 using musb-hdrc
[ 232.378692] usb 2-1: device descriptor read/64, error -71
[ 232.618628] usb 2-1: device descriptor read/64, error -71
When plugging in a powered USB hub, there is no response at all. There's also no change when using a USB power injector.
Could the breadboard be the issue? There's maybe six inches between the PocketBeagle and the USB plug.
Also, the first time I tried it, I wired it backwards. Is it possible I fried something on the PocketBeagle? I only have the one to try at the moment.