I have a custom carrier board that currently uses a jetson nano module. Most peripherals that have been tested are functioning well though there are two nagging problems with the micro USB port;
When plugged into a host, the board is not recognized in the host’s USB device list.
The board will usually not boot when power is applied through the micro USB port.
The circuit is shown below. I have not routed USB_VBUS_DET to SOM pin 87. I read elsewhere on this forum that it was not necessary to use this pin, and that a more convenient GPIO could be used. I am worried that this information may be incorrect and that SOM Pin 87 is critical for a proper boot.
Has anyone else encountered this or a similar problem?
Thank you for any suggestions.
This was from a post in December of 2019… Hi tfuru2,
The USB function in recovery is fixed to the device only and does not refer to ID pin and VBUS_DET pin. Put USB0_VBUS_DET grounded will not affect the function in recovery. You can leave it unconnected or grounded.
So not using GPIO00 for USB_VBUS_DET will not affect recovery, but will prevent the board from being recognized by a host?