Hipboi at 08:39, 24 November 2020

2020-11-24T08:39:59Z

Zzl: Created page with "{{rockpiE_header}} {{Languages|rockpiE/dev/adb}} ROCK Pi E > Development > USB Device Network] === Requirement ==..."

2020-10-12T03:45:55Z

Created page with "{{rockpiE_header}} {{Languages|rockpiE/dev/adb}} ROCK Pi E > Development > USB Device Network] === Requirement ==..."

New page

{{rockpiE_header}}
{{Languages|rockpiE/dev/adb}}
[[rockpiE | ROCK Pi E]] > [[rockpiE/dev | Development]] > [[rockpiE/dev/usbnet | USB Device Network]]]

=== Requirement ===
* ROCK Pi E mainboard
* eMMC module
* Power adapter
* USB Male A to Dupont cable.
** One port is Male A type and the other includes three Dupont lines.
** Hardware connection
{| class="wikitable"
|-
! ROCK Pi E 40-pin Header || USB Interface || USB Male A to Dupont Cable
|-
| PIN#18 || Data+ || Green wire
|-
| PIN#16 || Data- || White wire
|-
| PIN#14 || GND || Black wire
|}

[[File:rock-pi-e-usb-mala-a-to-dupont-cable.jpg | 500px ]]

=== Software preparation ===

* Kernel version

USB gadget driver must be enabled to configure usb net. You need to update the kernel to at least version 4.4.194-16 rockchip.

* Stop conflicting services

So far, Dupont cable OTG port only supports one Gadget function. To use use USB net, here need to stop rockchip-adbd service.

<pre>
root@rockpie:~# systemctl stop rockchip-adbd
root@rockpie:~# systemctl disable rockchip-adbd
root@rockpie:~# reboot
</pre>

=== Load kernel module===

* Connect the ROCK Pi E to PC with a Male A type and the other includes three Dupont lines cable.
* Install kernel module on ROCK Pi S

<pre>
root@rockpis:~# modprobe g_ether
</pre>

dmesg shoule output the folowing:
<pre>
root@rockpis:~# dmesg -c
[ 25.792177] using random self ethernet address
[ 25.792239] using random host ethernet address
[ 25.794179] usb0: HOST MAC fe:fc:51:10:b2:fa
[ 25.794444] usb0: MAC 82:21:a8:1b:f3:4a
[ 25.794539] using random self ethernet address
[ 25.794589] using random host ethernet address
[ 25.794787] g_ether gadget: Ethernet Gadget, version: Memorial Day 2008
[ 25.794819] g_ether gadget: g_ether ready
[ 25.797133] dwc2 ff400000.usb: bound driver g_ether
[ 25.988410] dwc2 ff400000.usb: new device is high-speed
[ 26.068210] dwc2 ff400000.usb: new device is high-speed
[ 26.132742] dwc2 ff400000.usb: new address 39
[ 26.154634] g_ether gadget: high-speed config #1: CDC Ethernet (ECM)
</pre>

Bring up the usb0 device

<pre>
root@rockpie:~# ifconfig usb0 up
</pre>

Now you should have usb0 on ROCK Pi E enabled.

On the host PC Ubuntu 16.04, the '''dmesg''' gives something like below:

<pre>
radxa@x86_64_pc:~$ sudo dmesg -c
[974637.533636] usb 1-4.1: new high-speed USB device number 121 using xhci_hcd
[974637.635515] usb 1-4.1: New USB device found, idVendor=0525, idProduct=a4a2
[974637.635520] usb 1-4.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[974637.635523] usb 1-4.1: Product: RNDIS/Ethernet Gadget
[974637.635525] usb 1-4.1: Manufacturer: Linux 4.4.143-46-rockchip-gef70dd2c725e with ff400000.usb
[974637.636655] cdc_subset: probe of 1-4.1:1.0 failed with error -22
[974637.637971] cdc_ether 1-4.1:1.0 usb0: register 'cdc_ether' at usb-0000:00:14.0-4.1, CDC Ethernet Device, 8a:11:bc:e7:60:26
[974637.650141] cdc_ether 1-4.1:1.0 enp0s20f0u4u1: renamed from usb0
[974637.678705] IPv6: ADDRCONF(NETDEV_UP): enp0s20f0u4u1: link is not ready
[974637.694633] IPv6: ADDRCONF(NETDEV_UP): enp0s20f0u4u1: link is not ready
</pre>

'''enp0s20f0u4u1''' is the "USB network card" for ROCK Pi E. '''ifconfig enp0s20f0u4u1''' gives us the info about it.

=== Setup USB Network ===

On ROCK Pi E.

<pre>
root@rockpie:~# IP=10.0.1.1
root@rockpie:~# HOST_IP=10.0.1.2
root@rockpie:~# ifconfig usb0 $IP netmask 255.255.255.0
root@rockpie:~# route
</pre>

On host PC

<pre>
radxa@x86_64_pc:~$ HOST_IP=10.0.1.2
radxa@x86_64_pc:~$ sudo ifconfig enp0s20f0u4u1 $HOST_IP netmask 255.255.255.0
</pre>

Test the network, on ROCK Pi E

<pre>
root@rockpie:~# ping $HOST_IP
</pre>

Test network traffic, on host PC

<pre>
radxa@x86_64_pc:~$ iperf -s
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 128 KByte (default)
------------------------------------------------------------
[ 4] local 10.0.1.2 port 5001 connected with 10.0.1.1 port 48264
[ ID] Interval Transfer Bandwidth
[ 4] 0.0-10.0 sec 113 MBytes 94.6 Mbits/sec
</pre>

Test network traffic, on ROCK Pi E:

<pre>
root@rockpie:~# iperf -c $HOST_IP
------------------------------------------------------------
Client connecting to 10.0.1.2, TCP port 5001
TCP window size: 85.0 KByte (default)
------------------------------------------------------------
[ 3] local 10.0.1.1 port 48264 connected with 10.0.1.2 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 113 MBytes 94.8 Mbits/sec
</pre>

=== Troubleshooting ===

* Refer [[RockpiE/getting_started/troubleshooting | Troubleshooting page]]
* Post your issue on the forum: https://forum.radxa.com/c/rockpiE

@@ Line 1: / Line 1: @@
 {{rockpiE_header}}
 {{Languages|rockpiE/dev/adb}}
-     [[rockpiE | ROCK Pi E]] > [[rockpiE/dev | Development]] > [[rockpiE/dev/usbnet | USB Device Network]]]
+     [[rockpiE | ROCK Pi E]] > [[rockpiE/dev | Development]] > [[rockpiE/dev/usbnet | USB Device Network]]
 === Requirement ===

RockpiE/dev/usbnet - Revision history

Hipboi at 08:39, 24 November 2020

Zzl: Created page with "{{rockpiE_header}} {{Languages|rockpiE/dev/adb}} ROCK Pi E > Development > USB Device Network] === Requirement ==..."