ASF USB Device HID Mouse

Human interface on SAML21-XPlain:

Introduction

This example shows how to implement a USB Device HID Mouse on Atmel MCU with USB module. The application note AVR4903 http://ww1.microchip.com/downloads/en/appnotes/doc8409.pdf provides information about this implementation.

Startup

The example uses the buttons or sensors available on the board to simulate a standard mouse. After loading firmware, connect the board (EVKxx,Xplain,...) to the USB Host. When connected to a USB host system this application provides a mouse application in the Unix/Mac/Windows operating systems. This example uses the native HID driver for these operating systems.

• Led 0 blinks when USB is connected and active
• Push button 0 (SW0) are used to move mouse up
• Only a low level on push button 0 will generate a wakeup to USB Host in remote wakeup mode.

About example

The example uses the following module groups:

• Basic modules: Startup, board, clock, interrupt, power management
• USB Device stack and HID modules:
  services/usb/
  services/usb/udc/
  services/usb/class/hid/
  services/usb/class/hid/mouse/
• Specific implementation:
  • main.c,
    initializes clock
    initializes interrupt
    manages UI
  • specific implementation for each target "./examples/product_board/":
    • conf_foo.h configuration of each module
    • ui.c implement of user's interface (buttons, leds)