mykey.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/pgmspace.h>
  30 #include <avr/interrupt.h>
  31 #include <util/delay.h>
  32
  33 #include "usb.h"
  34 #include "usb_keyboard.h"
  35 #include "usb_mouse.h"
  36 #include "print.h"
  37 #include "matrix.h"
  38 #include "keymap.h"
  39 #include "jump_bootloader.h"
  40
  41 #define LED_CONFIG    (DDRD |= (1<<6))
  42 #define LED_ON        (PORTD &= ~(1<<6))
  43 #define LED_OFF        (PORTD |= (1<<6))
  44 #define CPU_PRESCALE(n)    (CLKPR = 0x80, CLKPR = (n))
  45
  46 static void print_matrix(void);
  47
  48
  49 uint16_t idle_count=0;
  50
  51
  52
  53 int main(void)
  54 {
  55     // set for 16 MHz clock
  56     CPU_PRESCALE(0);
  57
  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.
  61     usb_init();
  62     while (!usb_configured()) /* wait */ ;
  63
  64     // Wait an extra second for the PC's operating system to load drivers
  65     // and do whatever it does to actually be ready for input
  66     _delay_ms(1000);
  67
  68     // Configure timer 0 to generate a timer overflow interrupt every
  69     // 256*1024 clock cycles, or approx 61 Hz when using 16 MHz clock
  70     // This demonstrates how to use interrupts to implement a simple
  71     // inactivity timeout.
  72     TCCR0A = 0x00;
  73     TCCR0B = 0x05;
  74     TIMSK0 = (1<<TOIE0);
  75
  76
  77     matrix_init();
  78     print("firmware 0.2 for t.m.k.\n");
  79
  80     bool modified = false;
  81     bool has_ghost = false;
  82     int key_index = 0;
  83     int loop_count = 0;
  84     int layer = 0;
  85     while (1) {
  86         matrix_scan();
  87         layer = get_layer();
  88         modified = matrix_is_modified();
  89         has_ghost = matrix_has_ghost();
  90
  91         // print matrix state for debug
  92         if (modified) {
  93             print_matrix();
  94
  95             // LED flush
  96             DDRD |= 1<<PD6;
  97             PORTD |= 1<<PD6;
  98         }
  99
 100         // set matrix state to keyboard_keys, keyboard_modifier_keys
 101         key_index = 0;
 102         keyboard_modifier_keys = 0;
 103         for (int i = 0; i < 6; i++) keyboard_keys[i] = KB_NO;
 104         for (int row = 0; row < MATRIX_ROWS; row++) {
 105             for (int col = 0; col < MATRIX_COLS; col++) {
 106                 if (matrix[row] & 1<<col) continue;
 107
 108                 uint8_t code = get_keycode(layer, row, col);
 109                 if (code == KB_NO) {
 110                     continue;
 111                 } else if (KB_LCTRL <= code && code <= KB_RGUI) {
 112                     // modifier keycode: 0xE0-0xE7
 113                     keyboard_modifier_keys |= 1<<(code & 0x07);
 114                 } else {
 115                     if (key_index < 6)
 116                         keyboard_keys[key_index] = code;
 117                     key_index++;
 118                 }
 119             }
 120         }
 121
 122         if (!has_ghost)  {
 123             // when 4 left modifier keys down
 124             if (keyboard_modifier_keys == (MOD_LCTRL | MOD_LSHIFT | MOD_LALT | MOD_LGUI)) {
 125                 // cancel all keys
 126                 keyboard_modifier_keys = 0;
 127                 for (int i = 0; i < 6; i++) keyboard_keys[i] = KB_NO;
 128                 usb_keyboard_send();
 129
 130                 /*
 131                 print("jump to bootloader...\n");
 132                 _delay_ms(1000);
 133                 jump_bootloader();
 134                 */
 135
 136                 // mouse
 137                 print("usb_mouse_move\n");
 138                 usb_mouse_move(10, 0, 0);
 139
 140                 _delay_ms(100);
 141                 continue;
 142             }
 143
 144
 145             // send keys to host
 146             if (modified) {
 147                 if (key_index > 6) {
 148                     //Rollover
 149                 }
 150                 usb_keyboard_send();
 151             }
 152         }
 153         loop_count++;
 154         _delay_ms(2);
 155     }
 156 }
 157
 158 static void print_matrix(void) {
 159             print("\nr/c 01234567\n");
 160             for (int row = 0; row < MATRIX_ROWS; row++) {
 161                 phex(row); print(": ");
 162                 pbin_reverse(matrix[row]);
 163                 if (matrix_has_ghost_in_row(row)) {
 164                     print(" <ghost");
 165                 }
 166                 print("\n");
 167             }
 168             print("keys: ");
 169             for (int i = 0; i < 6; i++) { phex(keyboard_keys[i]); print(" "); }
 170             print("\n");
 171             print("mod: "); phex(keyboard_modifier_keys); print("\n");
 172 }
 173
 174 // This interrupt routine is run approx 61 times per second.
 175 // A very simple inactivity timeout is implemented, where we
 176 // will send a space character and print a message to the
 177 // hid_listen debug message window.
 178 ISR(TIMER0_OVF_vect)
 179 {
 180     idle_count++;
 181 }