In addition to turning ports on and off, the USBHub3+ can also independently enable and disable Voltage and Data:
USBHub3c, combined with the External Load Feature, allows easy load testing and battery discharge of a variety of USB devices, including legacy Lightning, USB-OTG and USB-C ports, with and without USB Power Delivery (PD).
This guide is intended for users who need to:
Among other properties, we can view:
If you haven't already, install HubTool, which is part of the Brainstem Dev Kit.
Power on the hub and connect one of the host ports to your computer
The USBHub3+ can set each of its downstream ports to several power modes to support a range of devices.
The supported modes are part of BC1.2 USB charging specification:
The USBHub3+ can also independently enable and disable Voltage and Data:
We'll be working interactively using the Brainstem API in a Python console so you can see the results line-by-line.
Among other properties, using the USBHub3+ we can view:
Per-port Voltage
Per-port Current
Input Voltage
Input Current
The USBHub3+ can set each of its downstream ports to several power modes to support a range of devices.
The supported modes are part of BC1.2 USB charging specification:
A primary feature of Acroname hubs is the ability to turn a USB port on and off. Looking more closely, Acroname hubs also have the more granular ability to disable power/VBUS on a given port, independently from the USB D+/D- data lines on the same port.