How to enable USB OTG mode on a Pi Zero | Yet another Raspberry Blog …

In order to boot into USB OTG mode, connect your Pi Zero through the OTG socket with your host PC. If everything was configured correctly, the usb0 ethernet device should pop-up during boot (check it with ‘dmesg’):

[ 4.541481] dwc2 20980000.usb: DWC OTG Controller
[ 4.541600] dwc2 20980000.usb: new USB bus registered, assigned bus number 1
[ 4.541707] dwc2 20980000.usb: irq 33, io mem 0x00000000
[ 4.542289] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 4.542321] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 4.542344] usb usb1: Product: DWC OTG Controller
[ 4.542362] usb usb1: Manufacturer: Linux 4.4.21+ dwc2_hsotg
[ 4.542381] usb usb1: SerialNumber: 20980000.usb
[ 4.543838] hub 1-0:1.0: USB hub found
[ 4.543970] hub 1-0:1.0: 1 port detected
[ 4.743067] using random self ethernet address
[ 4.743122] using random host ethernet address
[ 4.743151] using host ethernet address: AA:BB:CC:DD:EE:FF
[ 4.744726] usb0: HOST MAC aa:bb:cc:dd:ee:ff
[ 4.744876] usb0: MAC 8e:fd:db:d9:2a:f7
[ 4.744969] using random self ethernet address
[ 4.745009] using random host ethernet address
[ 4.745172] g_ether gadget: Ethernet Gadget, version: Memorial Day 2008
[ 4.745199] g_ether gadget: g_ether ready

On your host-PC, a new network device, named usb0 should also appear (sudo ifconfig):

usb0 Link encap:Ethernet HWaddr AA:BB:CC:DD:EE:FF
 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
 RX packets:463 errors:0 dropped:0 overruns:0 frame:0
 TX packets:3491 errors:0 dropped:0 overruns:0 carrier:0
 collisions:0 txqueuelen:1000
 RX bytes:120418 (117.5 Kb) TX bytes:1696381 (1.6 Mb)

To configure the USB ethernet connection, open NetworkManager’s connection editor and chose usb0 (AA:BB:CC:DD:EE:FF) from the drop-down menu. On the IPv4 tab, select ‘Link-Local’. Pressing ‘connect’ establishes a connection to the Pi Zero and you should see that usb0 has an IP address (‘sudo ifconfig’):

usb0 Link encap:Ethernet HWaddr AA:BB:CC:DD:EE:FF
 inet addr 169.254.9.176 Bcast:169.254.255.255 Mask:255.255.0.0
 inet6 addr: fe60::84b:81ff:fed7:b55f/64 Scope:Link
 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
 RX packets:472 errors:0 dropped:0 overruns:0 frame:0
 TX packets:3578 errors:0 dropped:0 overruns:0 carrier:0
 collisions:0 txqueuelen:1000
 RX bytes:123658 (120.7 Kb) TX bytes:1717736 (1.6 Mb)

Now you can login to your Pi Zero with:

ssh pi@raspberrypi.local
or
ssh pi@169.254.64.64

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