I made a small modification to one of my Red’s. I modified the Raspberry connector, routing the D+/D- signals of the USB_IOT. I need to connect to another microcontroller.
Could anyone provide me a hint about how to activate that connection? I have already tested, but seems that when connecting that USB port to a USB on a linux machine, nothing happens.
I’m unsure if I have to also connect the V_IOT signal, or just leave the VBUS pin unconnected.
Moreover, do I need to further configure the HSIC hub?
Yes, that exactly what we did.
It is more convenient for us to use the Raspberry connector.
The question is whether we should do any kernel modification, or if we connect a USB device, it should get indexed right away?
Right now we are not getting any result (we are double-checking from the electrical point of view).
Hello,
Back from a few days of vacations I tested a number of things.
First, I checked a USB pen and it worked.
Then, I checked the modification we implemented on the USB_IOT connection. I’m trying to connect that USB port directly to a PC. For this connection I’m using a modified USB cable with its end modified to connect to the raspberry connector. No results seen from the dmesg command.
From there I tried you suggestion to use the IOT connector. I soldered a USB cable to the IOT breakout board and tested and retested the continuity of the connections.