Human interface on SAME70-Xplained:
Introduction
This example shows how to implement a USB Device HID Keyboard on Atmel MCU with USB module. The application note AVR4904 http://ww1.microchip.com/downloads/en/appnotes/doc8446.pdf provides information about this implementation.
Startup
The example uses the buttons or sensors available on the board to simulate a standard keyboard. After loading firmware, connect the board (EVKxx,Xplain,...) to the USB Host. When connected to a USB host system this application provides a keyboard application in the Unix/Mac/Windows operating systems. This example uses the native HID driver for these operating systems.
- Led 0 blinks when USB host has checked and enabled HID Keyboard interface
- The SW0 opens a notepad application on Windows O.S. and sends key sequence "Atmel ARM"
- SW0 can be used to wakeup 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/keyboard/
- 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)