Mercurial > louis > kiibohd-controller

annotate main.c @ 24:2d65da455ef3

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Formalizing code module structure and inheritance (Large Commit) - Commenting cleaned up - usb_keyboard_debug is not finished yet in terms of cleanup (needs DEBUB_PRINT #ifdef's) - Added LoadFile script generation - Formalized KeyIndex and USBKeys data containers - Split parts of scan_loop into Macro, USB, and main.c - Added interface to USB modules - Added interface to Macro modules - Added proper Debug module enable/disable
author Jacob Alexander <triplehaata@gmail.com>
date Thu, 29 Sep 2011 22:22:19 -0700
parents 7a95e742a31f
children c2ef3daf39e1
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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/pgmspace.h>
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27 #include <avr/interrupt.h>
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28
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29 // Project Includes
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30 //#include "usb_keys.h"
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31 #include "scan_loop.h"
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32 //#include "layouts.h"
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33 //#include "usb_keyboard.h"
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34
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35 #include "usb_keyboard_debug.h"
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36 #include "print.h"
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37 #include "led.h"
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40
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41 // ----- Defines -----
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42
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43 // Verified Keypress Defines
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44 #define USB_TRANSFER_DIVIDER 10 // 1024 == 1 Send of keypresses per second, 1 == 1 Send of keypresses per ~1 millisecond
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45
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47
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48 // ----- Macros -----
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49 #define CPU_PRESCALE(n) (CLKPR = 0x80, CLKPR = (n))
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50
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51
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52
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53 // ----- Variables -----
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54
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55 // Timer Interrupt for flagging a send of the sampled key detection data to the USB host
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56 uint16_t sendKeypressCounter = 0;
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57
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58 // Flag generated by the timer interrupt
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59 volatile uint8_t sendKeypresses = 0;
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60
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61
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62
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63 // ----- Functions -----
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64
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65 // Initial Pin Setup, make sure they are sane
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66 inline void pinSetup(void)
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67 {
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68 // For each pin, 0=input, 1=output
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69 DDRA = 0x00;
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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 PORTA = 0x00;
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79 PORTB = 0x00;
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80 PORTC = 0x00;
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81 PORTD = 0x00;
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82 PORTE = 0x00;
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83 PORTF = 0x00;
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84 }
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85
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86 int main(void)
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87 {
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88 // Setup with 16 MHz clock
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89 CPU_PRESCALE( 0 );
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90
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91 // Configuring Pins
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92 pinSetup();
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93
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94 // Setup USB Module
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95 usb_setup();
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96
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97 // Setup ISR Timer for flagging a kepress send to USB
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98 // Set to 256 * 1024 (8 bit timer with Clock/1024 prescalar) timer
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99 TCCR0A = 0x00;
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100 TCCR0B = 0x03;
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101 TIMSK0 = (1 << TOIE0);
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102
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103 // Main Detection Loop
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104 while ( 1 ) {
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105 //scan_loop();
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106
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107 // Loop should never get here (indicate error)
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108 errorLED( 1 );
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109
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110 // HID Debug Error message
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111 erro_print("Detection loop error, this is very bad...bug report!");
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112
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113 // Send keypresses over USB if the ISR has signalled that it's time
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114 if ( !sendKeypresses )
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115 continue;
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116
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117 // Send USB Data
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118 usb_send();
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119
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120 // Clear sendKeypresses Flag
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121 sendKeypresses = 0;
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122 }
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123 }
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124
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125 ISR( TIMER0_OVF_vect )
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126 {
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127 sendKeypressCounter++;
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128 if ( sendKeypressCounter > USB_TRANSFER_DIVIDER ) {
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129 sendKeypressCounter = 0;
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130 sendKeypresses = 1;
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131 }
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132 }
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133