When the Pi Zero came out, one of the downsides (!) of the low-cost design was swapping the 'standard' USB A-port for a micro-B port. Now you have to use an 'OTG' cable instead of just plugging in a device.
WARN::dwc_otg_handle_mode_mismatch_intr:68: Mode Mismatch Interrupt: currently in Device mode
Basically, the Pi sorta-trying to become a usb device rather than a usb host
Some awesome people on github sorted out that if you used the DWC2 USB driver, and patched a few files, you could get the Pi to act like a USB device (in linux-land this is called the USB Gadget system)
This tutorial is basically just a writeup of how you can follow along and turn your Pi zero into a USB Serial device or Ethernet device. That's two whole ways of being able to connect to your Pi zero just by plugging in a micro B cable! You don't even need to power your Pi seperately, as power is provided from your computer.
Yeah the gadget system can do a lot more, but these are the two modules we've tested so far. The compiled kernel package has just about every USB gadget compiled in as a module if you'd like to try others
Before You BeginThis tutorial isn't terribly difficult but you should have some raspberry Pi experience. In particular you will want to do the following before anything else
For Gadget serial you'll also want
While you don't need a console cable, it's a lot easier to copy & paste the commands into a terminal than to type into a keyboard + monitor.
Basically, get your Pi zero to a point you can log in. Power it from the Power USB port, leave the Data USB port 'empty'
OK now you can continue!
Page last edited April 19, 2024
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