tmk.c

   1 /* 2010/08/23 noname
   2  * keyboard firmware based on PJRC USB keyboard example
   3  */
   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
   7  *
   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:
  14  *
  15  * The above copyright notice and this permission notice shall be included in
  16  * all copies or substantial portions of the Software.
  17  *
  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
  24  * THE SOFTWARE.
  25  */
  26
  27 #include <stdbool.h>
  28 #include <avr/io.h>
  29 #include <avr/interrupt.h>
  30 #include <util/delay.h>
  31 #include "usb.h"
  32 #include "matrix_skel.h"
  33 #include "key_process.h"
  34 #include "print.h"
  35 #include "debug.h"
  36 #include "util.h"
  37 #include "controller.h"
  38 #include "timer.h"
  39
  40
  41 #define CPU_PRESCALE(n)    (CLKPR = 0x80, CLKPR = (n))
  42
  43
  44 bool debug_enable = false;
  45 bool debug_matrix = false;
  46 bool debug_keyboard = false;
  47 bool debug_mouse = false;
  48
  49
  50 int main(void)
  51 {
  52     // set for 16 MHz clock
  53     CPU_PRESCALE(0);
  54
  55     // Initialize the USB, and then wait for the host to set configuration.
  56     // If the Teensy is powered without a PC connected to the USB port,
  57     // this will wait forever.
  58     usb_init();
  59     while (!usb_configured()) /* wait */ ;
  60
  61     timer_init();
  62
  63     matrix_init();
  64     matrix_scan();
  65     // debug on by pressing down any 4 or more keys during boot time.
  66     if (matrix_key_count() >= 4) {
  67         print_enable = true;
  68         debug_enable = true;
  69     }
  70
  71     /* wait for debug pipe ready */
  72     if (print_enable) {
  73 #ifdef DEBUG_LED
  74         for (int i = 0; i < 6; i++) {
  75             DEBUG_LED_CONFIG;
  76             DEBUG_LED_ON;
  77             _delay_ms(500);
  78             DEBUG_LED_OFF;
  79             _delay_ms(500);
  80         }
  81 #else
  82             _delay_ms(6000);
  83 #endif
  84     }
  85     // print description
  86     print(STR(DESCRIPTION) "\n");
  87
  88     while (1) {
  89        proc_matrix();
  90         _delay_ms(2);
  91     }
  92 }