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104 lines
4.5 KiB
Markdown
104 lines
4.5 KiB
Markdown
| Supported Targets | ESP32-S2 | ESP32-S3 |
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| ----------------- | -------- | -------- |
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# TinyUSB Network Control Model Device Example
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(See the README.md file in the upper level 'examples' directory for more information about examples.)
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Network Control Model (NCM) is a sub-class of Communication Device Class (CDC) USB Device for Ethernet-over-USB applications.
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In this example, we implemented the ESP development board to transmit WiFi data to the Linux or Windows host via USB, so that the host could access the Internet.
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As a USB stack, a TinyUSB component is used.
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## How to use example
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### Hardware Required
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Any ESP board that have USB-OTG supported.
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#### Pin Assignment
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_Note:_ In case your board doesn't have micro-USB connector connected to USB-OTG peripheral, you may have to DIY a cable and connect **D+** and **D-** to the pins listed below.
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See common pin assignments for USB Device examples from [upper level](../../README.md#common-pin-assignments).
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### Configure the project
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Open the project configuration menu (`idf.py menuconfig`).
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In the `Example Configuration` menu:
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* Set the Wi-Fi configuration.
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* Set `WiFi SSID`.
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* Set `WiFi Password`.
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### Build, Flash, and Run
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Build the project and flash it to the board, then run monitor tool to view serial output:
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```
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idf.py -p PORT build flash monitor
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```
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(Replace PORT with the name of the serial port to use.)
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(To exit the serial monitor, type ``Ctrl-]``.)
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See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
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## Example Output
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After the flashing you should see the output at idf monitor:
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```
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I (399) main_task: Calling app_main()
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I (429) USB_NCM: USB NCM device initialization
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W (429) TinyUSB: The device's configuration descriptor is not provided by user, using default.
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W (429) TinyUSB: The device's string descriptor is not provided by user, using default.
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W (439) TinyUSB: The device's device descriptor is not provided by user, using default.
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I (449) tusb_desc:
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┌─────────────────────────────────┐
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│ USB Device Descriptor Summary │
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├───────────────────┬─────────────┤
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│bDeviceClass │ 239 │
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├───────────────────┼─────────────┤
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│bDeviceSubClass │ 2 │
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├───────────────────┼─────────────┤
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│bDeviceProtocol │ 1 │
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├───────────────────┼─────────────┤
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│bMaxPacketSize0 │ 64 │
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├───────────────────┼─────────────┤
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│idVendor │ 0x303a │
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├───────────────────┼─────────────┤
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│idProduct │ 0x4001 │
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├───────────────────┼─────────────┤
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│bcdDevice │ 0x100 │
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├───────────────────┼─────────────┤
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│iManufacturer │ 0x1 │
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├───────────────────┼─────────────┤
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│iProduct │ 0x2 │
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├───────────────────┼─────────────┤
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│iSerialNumber │ 0x3 │
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├───────────────────┼─────────────┤
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│bNumConfigurations │ 0x1 │
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└───────────────────┴─────────────┘
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I (619) TinyUSB: TinyUSB Driver installed
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I (619) USB_NCM: WiFi initialization
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I (619) pp: pp rom version: e7ae62f
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I (629) net80211: net80211 rom version: e7ae62f
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I (689) wifi_init: rx ba win: 6
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I (699) wifi_init: tcpip mbox: 32
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I (699) wifi_init: udp mbox: 6
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I (699) wifi_init: tcp mbox: 6
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I (709) wifi_init: tcp tx win: 5744
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I (709) wifi_init: tcp rx win: 5744
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I (719) wifi_init: tcp mss: 1440
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I (719) wifi_init: WiFi IRAM OP enabled
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I (719) wifi_init: WiFi RX IRAM OP enabled
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I (729) phy_init: phy_version 600,8dd0147,Mar 31 2023,16:34:12
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I (779) USB_NCM: USB NCM and WiFi initialized and started
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I (779) main_task: Returned from app_main()
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I (849) USB_NCM: WiFi STA connected
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```
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