This example does not work out-of-the-box. You need to copy a network example for your development board using Pack Installer. Then, you need to change some settings and add user code, to be able to connect your network enabled device to a Windows hosts using USB.

Note: The following description is based on the HTTP Server for a MCB1800 development board.

The following picture shows an exemplary connection of the development board (in this case a MCB1800) to a host PC.

Create the "USB Web Server" project

Copy the HTTP Server example using Pack Installer
Change following settings in RTE:
- Disable CMSIS Driver:Ethernet MAC (API)
- Disable CMSIS Driver:Ethernet PHY (API)
- Enable CMSIS Driver:Ethernet (API):RNDIS
- Enable an appropriate CMSIS Driver:USB Device (API)
- Set USB:Device = 1
- Enable USB:CORE (in the Release variant)
- Set USB:Device:CDC = 1
Enable the selected USB port in RTE_Device.h or using external tools (for example STM32CubeMX for STMicroelectronics devices)
Disable the Ethernet port in RTE_Device.h or using external tools (for example STM32CubeMX for STMicroelectronics devices)
Add a user code template to your sources (right-click on Source group in Project window -> Add New Item to Group 'Source' -> User Code Template -> USB:USB Device:CDC: USB Device CDC ACM RNDIS Virtual Ethernet -> Add)
Disable DHCP in network settings (open Network:Net_Config_ETH_0.h and disable Dynamic Host Configuration)
Open USB:USBD_Config_0.c and check/change settings:
- Set the correct hardware driver interface number
- Enable high-speed operation (if available)
- Device Settings:
  - Max Endpoint 0 Packet Size = 64 Bytes
- Product ID = set to required (if you are using Windows 7, set it to 0x3709 for Keil MCB boards)
- Microsoft OS Descriptors Settings:OS String = enable
Open USB:USBD_Config_CDC_0.h and check/change settings:
- USB Device: Communication Device Class (CDC) 0:
  - Communication Class Subclass = Abstract Control Model (ACM)
  - Communication Class Protocol = Vendor-specific (RNDIS)
  - Interrupt Endpoint Settings:
    - Endpoint Settings:
      - Full/Low-speed:
        
        Maximum Endpoint Packet Size In bytes) = 16
      - High-speed:
        
        Maximum Endpoint Packet Size In bytes) = 16
  - Bulk Endpoint Settings:
    - Endpoint Settings:
      - Full/Low-speed:
        
        Maximum Endpoint Packet Size In bytes) = 64
      - High-speed:
        
        Maximum Endpoint Packet Size In bytes) = 512
  - Communication Device Class Settings: Abstract Control Model Settings:
    - Communication Class Interface String = USB Remote NDIS6 based Device
    - Call Management Capabilities:
      - Call Management channel = Communication Class Interface only
      - Device Call Management handling = None
  - Abstract Control Management Capabilities:
    - all disabled
  - Maximum Communication Device Send Buffer Size = 2048
  - Maximum Communication Device Receive Buffer Size = 2048
If RTX v5 is used no changes to RTX settings are necessary as all resources are allocated statically. If RTX v4 is used you need to change following settings in RTX_Conf_CM.c file:
- Increase Number of concurrent running user threads by 3
- Increase Number of threads with user-provided stack size by 3
- Increase Total stack size [bytes] for threads with user-provided stack size by 2048
Add this include to the main module:
#include "rl_usb.h"
Add these lines of code to the HTTP_Server.c module before endless loop in main or app_main function:
USBD_Initialize (0U); // USB Device 0 Initialization

USBD_Connect (0U); // USB Device 0 Connect

Build the project and download to the target.

Using the "USB Web Server" project

Hardware Setup

Verify all jumper settings on the target hardware.
Connect the development board to a host PC attaching a Micro-USB cable to the USB0 port.
Make sure that the board is not powered using this USB port. An external power supply is recommended.
After the device is recognized on the Windows PC:
- If the high-speed port is used, the driver should install on Windows 7 and later automatically
- If not, please use the provided .inf file from the USB RNDIS example (for example for MCB4300 evaluation board), but change .inf file Product ID according to one set in USBD_Config_0.c file
- Set your computer's IP address to 192.168.0.101 to match the settings of the embedded device:
  - Go to Control Panel -> Network and Sharing Center -> Change Adapter Settings
  - Right-click on Local Area Connection n (Remote NDIS56 based Device):
  - Select properties -> Internet Protocol Version 4 (TCP/IPv4) properties and use the following address:
    - IP address: 192.168.0.101
    - Subnet mask: 255.255.255.0 OK and close all dialogs
- Open a web browser and enter the address 192.168.0.100
- Use "admin" without a password to log in: