/*!
    \file    readme.txt
    \brief   description of the USB custom HID device for IAP demo

    \version 2025-08-08, V1.3.0, firmware for GD32E51x
*/

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*/

  This demo is based on the GD32E517Z-EVAL-V1.0 board, it provides a description of 
how to use the USB-HS-Device peripheral.

  The GD32 device is enumerated as an USB Custom HID device for IAP, that uses the 
native PC Host HID driver.

  To test the demo, you need to:
    - Download the "USB IAP Client" PC applet
    - Start the "USB IAP Client" PC applet and connect GD32 USB to PC (Note: maybe
      the driver installation is failed in the first time, try reseating again.)
    - The device should be detected and shown in the PC applet
    - Select the hex image and download it to the flash
    - After each device reset, the MCU will run the new application
    - After each device reset, hold down the KEY_B on the GD32E517Z-EVAL board 
      to enter IAP mode
      
  This demo USBHS cannot be used with internal clocks.
