1 /* Copyright (C) 2011 by Jacob Alexander
3 * Permission is hereby granted, free of charge, to any person obtaining a copy
4 * of this software and associated documentation files (the "Software"), to deal
5 * in the Software without restriction, including without limitation the rights
6 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
7 * copies of the Software, and to permit persons to whom the Software is
8 * furnished to do so, subject to the following conditions:
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
18 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23 #include <avr/pgmspace.h>
24 #include <avr/interrupt.h>
25 #include <util/delay.h>
26 #include "usb_keyboard.h"
28 #define CPU_PRESCALE(n) (CLKPR = 0x80, CLKPR = (n))
32 // set for 16 MHz clock
38 // Initialize the USB, and then wait for the host to set configuration.
39 // If the Teensy is powered without a PC connected to the USB port,
40 // this will wait forever.
42 while ( !usb_configured() ) /* wait */ ;
44 // Wait an extra second for the PC's operating system to load drivers
45 // and do whatever it does to actually be ready for input
48 // Main Detection Loop
50 // usb_keyboard_press(KEY_B, KEY_SHIFT);