Wondering if anyone has tested setting up the RPi4 USB-C connector for data and power out?
I read that the RPi4 does not have “USB-C power delivery” logic but can be configured to do both USB-C data transfer, and supply 5v through the connector.
What current can it deliver 5v at while doing data transfer?
Do you configure it in raspi-config or have to manually add to the config.txt
dtoverlay=dwc2,dr_mode=host
(The data transfer is only USB 2.0 speed. For better throughput connect to the USB-3 connector of the Pi4.)
Without better information, I wouldn’t pull any more than minimal current, (i.e. keyboard, mouse, flash-drive.)
I know it can sink several amps, but the converse is not always true. (ie Just because the circuit can accept 3 amps, doesn’t mean that the same circuitry can safely provide 3 amps.) So I’d be really careful about the current I pull from that connector.
I do not remember seeing anything about USB-C in raspi-config. (Maybe they’ve updated it recently?)
Absent a setting in raspi-config, the dtoverlay spec might do it.
@cyclicalobsessive, do you have links to better or more complete information?
