samples: video: tcpserversink: ethernet over usb

Ethernet over USB support.

Signed-off-by: Hugues Fruchet <[email protected]>

Author: hfruchet-st

samples/drivers/video/tcpserversink/README.rst

@@ -31,7 +31,8 @@ interface. Ethernet cable must be connected to RJ45 connector.
 
 On :zephyr:board:`stm32n6570_dk`, the MB1854 IMX335 camera module must be plugged in
 the CSI-2 camera connector. A RJ45 ethernet cable must be plugged in the ethernet CN6
-connector.
+connector. When using ethernet over USB, plug an USB-C cable between CN8 USB1 connector
+and your host PC.
 
 Building and Running
 ********************
@@ -94,6 +95,16 @@ When using compression support, use this GStreamer command line:
     gst-launch-1.0 tcpclientsrc host=192.0.2.1 port=5000 \
         ! queue ! decodebin ! queue ! fpsdisplaysink sync=false
 
+When using ethernet over USB, set the ethernet interface through USB before
+starting the GStreamer command line:
+
+.. code-block:: console
+    sudo ifconfig enx00005e005301 192.0.2.2
+
+To find the right interface, search for "enx" in dmesg
+ .. code-block:: console
+    [1316045.847337] cdc_ether 3-6.3.2:1.0 enx00005e005301: renamed from eth0
+
 References
 **********
 

samples/drivers/video/tcpserversink/overlay-netusb.conf

@@ -0,0 +1,10 @@
+# USB Device settings
+CONFIG_USB_DEVICE_STACK=y
+
+# Select USB Configurations
+CONFIG_USB_DEVICE_NETWORK_ECM=y
+CONFIG_USB_DEVICE_INITIALIZE_AT_BOOT=n
+
+# Logging
+CONFIG_USB_DRIVER_LOG_LEVEL_INF=y
+CONFIG_USB_DEVICE_LOG_LEVEL_INF=y

samples/drivers/video/tcpserversink/prj.conf

@@ -35,8 +35,25 @@ CONFIG_NET_MAX_CONTEXTS=10
 # Network shell
 CONFIG_NET_SHELL=y
 
+# Network management
+CONFIG_NET_MGMT=y
+CONFIG_NET_MGMT_EVENT=y
+CONFIG_NET_MGMT_EVENT_STACK_SIZE=800
+CONFIG_NET_MGMT_EVENT_QUEUE_SIZE=5
+CONFIG_NET_CONNECTION_MANAGER=y
+
 # Network application options and configuration
+CONFIG_NET_CONFIG_INIT_TIMEOUT=1
+CONFIG_NET_CONFIG_AUTO_INIT=y
 CONFIG_NET_CONFIG_SETTINGS=y
 CONFIG_NET_CONFIG_MY_IPV4_ADDR="192.0.2.1"
+CONFIG_NET_CONFIG_PEER_IPV4_ADDR="192.0.2.2"
 
 CONFIG_VIDEO=y
+
+# USB Device settings
+CONFIG_USB_DEVICE_STACK=y
+
+# Select USB Configurations
+CONFIG_USB_DEVICE_NETWORK_ECM=y
+CONFIG_USB_DEVICE_INITIALIZE_AT_BOOT=y

samples/drivers/video/tcpserversink/src/main.c

@@ -9,7 +9,9 @@
 #include <zephyr/drivers/video-controls.h>
 #include <zephyr/kernel.h>
 #include <zephyr/logging/log.h>
+#include <zephyr/net/net_config.h>
 #include <zephyr/net/socket.h>
+#include <zephyr/usb/usb_device.h>
 
 LOG_MODULE_REGISTER(main, CONFIG_LOG_DEFAULT_LEVEL);
 
@@ -31,6 +33,14 @@ static ssize_t sendall(int sock, const void *buf, size_t len)
 	return 0;
 }
 
+void usb_init(void)
+{
+	if (usb_enable(NULL))
+		printk("usb enable error\n");
+
+	(void)net_config_init_app(NULL, "Initializing network over USB");
+}
+
 #if DT_HAS_CHOSEN(zephyr_videoenc)
 const struct device *encoder_dev = NULL;
 
@@ -166,6 +176,8 @@ int main(void)
 	}
 
 	/* Prepare Network */
+	usb_init();
+
 	(void)memset(&addr, 0, sizeof(addr));
 	addr.sin_family = AF_INET;
 	addr.sin_port = htons(MY_PORT);