I'm designing a USB device for a data transfer and I want to make the circuit as simple and small footprints as possible.
And to achieve this, I need to know if 2 self-powered USB UFP devices won't die when I connect them to each other.
For more details,
The system is a USB device(Slave only) using USB C connectors, but this is an only USB 2.0 device so SS pins are not used.
So I was planning to use SPI peripherals over SS pins(Tx,Rx) to have devices send and receive data without having all of my devices connect to host.
Currently, I have set a USB C controller in UFP mode and I know if I make the controller to be in a DRP mode, this system won't have any problem.
But If I make the device in DRP mode, I need to add a load switch, which I don't want to use since this system is a self-powered USB slave device.
So I'm wondering if I'm ok to connect 2 self-powered USB UFP Devices without blowing anything up.