Mercurial > louis > kiibohd-controller

annotate main.c @ 40:d4552f24e4ad

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Finishing up the Epson QX-10 module - Typing and modifiers fully working - Still some features left to implement * Stop input * Diagnostic test * Setting interval before starting repeat rate * More comments * Handling LED stats
author Jacob Alexander <triplehaata@gmail.com>
date Sun, 11 Dec 2011 00:06:49 -0800
parents 8e11cdc1aee4
children 9ad7c1a28661
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1 /* Copyright (C) 2011 by Jacob Alexander
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2 *
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3 * Permission is hereby granted, free of charge, to any person obtaining a copy
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4 * of this software and associated documentation files (the "Software"), to deal
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5 * in the Software without restriction, including without limitation the rights
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6 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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7 * copies of the Software, and to permit persons to whom the Software is
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8 * furnished to do so, subject to the following conditions:
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9 *
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10 * The above copyright notice and this permission notice shall be included in
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11 * all copies or substantial portions of the Software.
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12 *
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13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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18 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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19 * THE SOFTWARE.
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20 */
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21
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22 // ----- Includes -----
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23
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24 // AVR Includes
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25 #include <avr/io.h>
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26 #include <avr/interrupt.h>
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27
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28 // Project Includes
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29 #include <macro.h>
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30 #include <scan_loop.h>
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31 #include <usb_com.h>
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32
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33 #include <led.h>
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34 #include <print.h>
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35
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37
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38 // ----- Defines -----
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39
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40 // Verified Keypress Defines
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41 #define USB_TRANSFER_DIVIDER 10 // 1024 == 1 Send of keypresses per second, 1 == 1 Send of keypresses per ~1 millisecond
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42
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44
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45 // ----- Macros -----
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46 #define CPU_PRESCALE(n) (CLKPR = 0x80, CLKPR = (n))
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48
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49
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50 // ----- Variables -----
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51
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52 // Timer Interrupt for flagging a send of the sampled key detection data to the USB host
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53 uint16_t sendKeypressCounter = 0;
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54
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55 // Flag generated by the timer interrupt
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56 volatile uint8_t sendKeypresses = 0;
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57
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58
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59
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60 // ----- Functions -----
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61
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62 // Initial Pin Setup, make sure they are sane
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63 inline void pinSetup(void)
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64 {
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65
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66 // For each pin, 0=input, 1=output
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67 #if defined(__AVR_AT90USB1286__)
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68 DDRA = 0x00;
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69 #endif
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70 DDRB = 0x00;
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71 DDRC = 0x00;
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72 DDRD = 0x00;
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73 DDRE = 0x00;
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74 DDRF = 0x00;
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75
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76
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77 // Setting pins to either high or pull-up resistor
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78 #if defined(__AVR_AT90USB1286__)
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79 PORTA = 0x00;
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80 #endif
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81 PORTB = 0x00;
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82 PORTC = 0x00;
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83 PORTD = 0x00;
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84 PORTE = 0x00;
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85 PORTF = 0x00;
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86 }
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87
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88 int main(void)
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89 {
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90 // Setup with 16 MHz clock
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91 CPU_PRESCALE( 0 );
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92
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93 // Configuring Pins
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94 pinSetup();
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95 init_errorLED();
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96
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97 // Setup USB Module
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98 usb_setup();
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99
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100 // Setup ISR Timer for flagging a kepress send to USB
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101 // Set to 256 * 1024 (8 bit timer with Clock/1024 prescalar) timer
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102 TCCR0A = 0x00;
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103 TCCR0B = 0x03;
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104 TIMSK0 = (1 << TOIE0);
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105
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106 // Main Detection Loop
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107 uint8_t ledTimer = 15; // Enable LED for a short time
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108 while ( 1 )
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109 {
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110 // Setup the scanning module
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111 scan_setup();
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112
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113 while ( 1 )
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114 {
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115 // Acquire Key Indices
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116 // Loop continuously until scan_loop returns 0
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117 cli();
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118 while ( scan_loop() );
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119 sei();
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120
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121 // Run Macros over Key Indices and convert to USB Keys
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122 process_macros();
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123
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124 // Send keypresses over USB if the ISR has signalled that it's time
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125 if ( !sendKeypresses )
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126 continue;
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127
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128 // Send USB Data
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129 usb_send();
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130
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131 // Clear sendKeypresses Flag
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132 sendKeypresses = 0;
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133
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134 // Indicate Error, if valid
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135 errorLED( ledTimer );
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136
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137 if ( ledTimer > 0 )
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138 ledTimer--;
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139 }
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140
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141 // Loop should never get here (indicate error)
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142 ledTimer = 255;
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143
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144 // HID Debug Error message
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145 erro_print("Detection loop error, this is very bad...bug report!");
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146 }
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147 }
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148
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149 // USB Keyboard Data Send Counter Interrupt
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150 ISR( TIMER0_OVF_vect )
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151 {
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152 sendKeypressCounter++;
9df636be6feb Keyboard functionally working with very very good debouncing.
Jacob Alexander <triplehaata@gmail.com>
parents: 5
diff changeset
153 if ( sendKeypressCounter > USB_TRANSFER_DIVIDER ) {
9df636be6feb Keyboard functionally working with very very good debouncing.
Jacob Alexander <triplehaata@gmail.com>
parents: 5
diff changeset
154 sendKeypressCounter = 0;
9df636be6feb Keyboard functionally working with very very good debouncing.
Jacob Alexander <triplehaata@gmail.com>
parents: 5
diff changeset
155 sendKeypresses = 1;
9df636be6feb Keyboard functionally working with very very good debouncing.
Jacob Alexander <triplehaata@gmail.com>
parents: 5
diff changeset
156 }
9df636be6feb Keyboard functionally working with very very good debouncing.
Jacob Alexander <triplehaata@gmail.com>
parents: 5
diff changeset
157 }
9df636be6feb Keyboard functionally working with very very good debouncing.
Jacob Alexander <triplehaata@gmail.com>
parents: 5
diff changeset
158