2 * keyboard firmware based on PJRC USB keyboard example
4 /* Keyboard example with debug channel, for Teensy USB Development Board
5 * http://www.pjrc.com/teensy/usb_keyboard.html
6 * Copyright (c) 2008 PJRC.COM, LLC
8 * Permission is hereby granted, free of charge, to any person obtaining a copy
9 * of this software and associated documentation files (the "Software"), to deal
10 * in the Software without restriction, including without limitation the rights
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 * copies of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
29 #include <avr/interrupt.h>
30 #include <util/delay.h>
32 #include "matrix_skel.h"
33 #include "key_process.h"
37 #include "controller.h"
41 #define CPU_PRESCALE(n) (CLKPR = 0x80, CLKPR = (n))
44 bool debug_enable = false;
45 bool debug_matrix = false;
46 bool debug_keyboard = false;
47 bool debug_mouse = false;
55 // set for 16 MHz clock
58 // Initialize the USB, and then wait for the host to set configuration.
59 // If the Teensy is powered without a PC connected to the USB port,
60 // this will wait forever.
62 while (!usb_configured()) /* wait */ ;
68 // debug on by pressing down any 4 or more keys during boot time.
69 if (matrix_key_count() >= 4) {
74 /* wait for debug pipe ready */
77 for (int i = 0; i < 6; i++) {
89 print(STR(DESCRIPTION) "\n");