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--- products:sbc:edge2:configurations:usb-gadget [2022/12/12 20:16]
nick
+++ products:sbc:edge2:configurations:usb-gadget [2025/09/18 06:07] (current)
jacobe
@@ Line 1: / Line 1: @@
+{{indexmenu_n>30}}
 ====== Edge2 USB Gadget ======
 {{page>/products/sbc/common/configurations/usb-gadget&noheader}}
+===== Usage of ADB =====
+ADB is enabled by default, you can access the device directly via adb:
+<code shell>
+$ adb kill-server
+$ adb devices
+* daemon not running; starting now at tcp:5037
+* daemon started successfully
+List of devices attached
+c819990    device
+$ adb shell
+root@Khadas:/#
+</code>
+===== Enable Other USB Functions =====
+You can dynamically switch USB functions by writing to ''/tmp/.usb_config'' and restarting the ''usbdevice'' service.
+  * **Enable RNDIS**
+<code shell>
+echo usb_rndis_en > /tmp/.usb_config
+sudo usbdevice restart
+</code>
+  * **Enable ACM**
+<code shell>
+echo usb_acm_en > /tmp/.usb_config
+sudo usbdevice restart
+</code>
+  * **Enable UAC**
+<code shell>
+echo usb_uac_en > /tmp/.usb_config
+sudo usbdevice restart
+</code>
+  * **Enable UVC**
+<code shell>
+echo usb_uvc_en > /tmp/.usb_config
+sudo usbdevice restart
+</code>
+After enabling UVC, run:
+<code shell>
+uvc-gadget rockchip/functions/uvc.0 -d /dev/videoX
+</code>
+> Note: Replace ''X'' with the actual video node number.
+  * **Enable UMS**
+<code shell>
+echo usb_ums_en > /tmp/.usb_config
+sudo mkdir -p /userdata/
+dd if=/dev/zero of=/userdata/ums_shared.img bs=1M count=1024
+</code>
+UMS mode requires the empty ''ums_shared.img'' file (1GB in the example above), which will be recognized as a storage drive by the host system.
+===== RNDIS Setup IP Address =====
+After enabling RNDIS, configure the IP address manually. For example, set the device IP to ''192.168.35.100'':
+<code shell>
+sudo ifconfig usb0 192.168.35.100 up
+</code>
+Also configure the IP on the host PC, for example ''192.168.35.110''.
+Test the network connection:
+<code shell>
+ping -I usb0 192.168.35.110
+</code>

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