How to enable serial port on the Raspberry Pi Zero USB OTG port?

Question

The Raspberry Pi Zero comes with USB OTG port. After some reading about OTG driver it seems that it could be configured as CDC device like serial port. So I was wondering if it is possible do so with the Pi Zero?

Answer 1

To enable EtherNet over USB you need to:

1- you need to edit cmdline.txt. Look for rootwait and add modules-load=dwc2,g_ether after it immediately.

sudo nano /boot/cmdline.txt

2- edit /boot/config.txt

sudo nano /boot/config.txt

3- You need to specify address in dhcpcd.config

sudo nano /etc/dhcpcd.config 

Now define IP address:

 interface usb0
           static ip_address=192.168.11.1 ## SAME AS ROUTERS 
           static routers=192.168.11.1 
           static domain_name_Servers=192.168.11.1

If you have two or more boards you want to connect to each other then you need to define same definition but with different IPs for each board.

interface usb0
       static ip_address=192.168.11.9 ### ANOTHER ADDRESS HERER
       static routers=192.168.11.1 
       static domain_name_Servers=192.168.11.1

Please check this article for detailed description