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--- products:sbc:edge-2l:configurations:usb-gadget [2025/11/25 04:04]
gray created
+++ products:sbc:edge-2l:configurations:usb-gadget [2026/05/11 02:29] (current)
nick
@@ Line 1: / Line 1: @@
 {{indexmenu_n>30}}
-====== Edge-2L USB Gadget ======
+====== Edge-2L USB gadget ======
-{{page>/products/sbc/common/configurations/usb-gadget&noheader}}
+{{page>products:sbc:common:configurations:usb-gadget&noheader}}
 ===== Usage of ADB =====
-ADB is enabled by default, you can access the device directly via adb:
+ADB (Android Debug Bridge) is enabled by default. You can access the device directly via ADB:
 <code shell>
 $ adb kill-server
 $ adb devices
+</code>
+Expected output:
+```txt
 * daemon not running; starting now at tcp:5037
 * daemon started successfully
@@ Line 17: / Line 21: @@
 List of devices attached
 c819990    device
+```
+To obtain a shell on the device:
+```shell
 $ adb shell
-root@Khadas:/#
-</code>
-===== Enable Other USB Functions =====
+```
+You should see a prompt like: ''root@Khadas:/#''
-You can dynamically switch USB functions by writing to ''/tmp/.usb_config'' and restarting the ''usbdevice'' service.
+===== Enable other USB functions =====
-  * **Enable RNDIS**
+You can dynamically switch USB gadget functions by writing the desired mode to the file ''/tmp/.usb_config'' and restarting the 'usbdevice' service.
+  * **Enable RNDIS (Ethernet over USB):**
 <code shell>
 echo usb_rndis_en > /tmp/.usb_config
@@ Line 32: / Line 40: @@
 </code>
-  * **Enable ACM**
+  * **Enable ACM (Serial Port over USB):**
 <code shell>
 echo usb_acm_en > /tmp/.usb_config
@@ Line 38: / Line 46: @@
 </code>
-  * **Enable UAC**
+  * **Enable UAC (USB Audio Class):**
 <code shell>
 echo usb_uac_en > /tmp/.usb_config
@@ Line 44: / Line 52: @@
 </code>
-  * **Enable UVC**
+  * **Enable UVC (USB Video Class):**
 <code shell>
 echo usb_uvc_en > /tmp/.usb_config
@@ Line 50: / Line 58: @@
 </code>
-After enabling UVC, run:
+After enabling UVC, start the UVC gadget application:
 <code shell>
 uvc-gadget rockchip/functions/uvc.0 -d /dev/videoX
 </code>
-> Note: Replace ''X'' with the actual video node number.
+> Note: Replace ''X'' with the actual video device node number (e.g. /dev/video0).
-  * **Enable UMS**
+  * **Enable UMS (USB Mass Storage)：**
 <code shell>
 echo usb_ums_en > /tmp/.usb_config
@@ Line 63: / Line 71: @@
 </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.
+UMS mode requires an empty disk image file (''ums_shared.img'' in the example above, 1GB size). This file will be presented to the host system as a removable storage drive.
+===== RNDIS setup IP address =====
-===== RNDIS Setup IP Address =====
+After enabling the RNDIS function, you need to configure the IP address manually on both the device and the host PC.
-After enabling RNDIS, configure the IP address manually. For example, set the device IP to ''192.168.35.100'':
+Such as set the IP address for the usb0 interface (e.g., to 192.168.35.100):
 <code shell>
@@ Line 73: / Line 83: @@
 </code>
-Also configure the IP on the host PC, for example ''192.168.35.110''.
+On the host PC, configure the corresponding USB network interface with an IP address on the same subnet (e.g., 192.168.35.110).
-Test the network connection:
+Test the connection form the device to the host:
 <code shell>

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