Mercurial > louis > kiibohd-controller

annotate main.c @ 67:9ad7c1a28661

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Preparing for Teensy 3 (ARM) integration, abstracting code hierarchy - Abstracted USB Module - Abstracted compiler specific includes for Scan, Macro, Debug, and USB modules - Updated CMake build files to support changes - Added abstractions necessary to main.c as well as a compiler specific include file
author Jacob Alexander <triplehaata@gmail.com>
date Sat, 26 Jan 2013 15:05:28 -0500
parents d4552f24e4ad
children 23600aaa5e15
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67
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1 /* Copyright (C) 2011-2013 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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24 // Compiler Includes
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25 #include <Lib/MainLib.h>
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27 // Project Includes
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28 #include <macro.h>
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29 #include <scan_loop.h>
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30 #include <usb_com.h>
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31
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32 #include <led.h>
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33 #include <print.h>
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36
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37 // ----- Defines -----
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39 // Verified Keypress Defines
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40 #define USB_TRANSFER_DIVIDER 10 // 1024 == 1 Send of keypresses per second, 1 == 1 Send of keypresses per ~1 millisecond
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44 // ----- Macros -----
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45 #if defined(_at90usb162_) || defined(_atmega32u4_) || defined(_at90usb646_) || defined(_at90usb1286_)
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46 #define CPU_PRESCALE(n) (CLKPR = 0x80, CLKPR = (n))
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47 #endif
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49
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50
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51 // ----- Variables -----
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52
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53 // Timer Interrupt for flagging a send of the sampled key detection data to the USB host
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54 uint16_t sendKeypressCounter = 0;
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55
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56 // Flag generated by the timer interrupt
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57 volatile uint8_t sendKeypresses = 0;
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61 // ----- Functions -----
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62
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63 // Initial Pin Setup, make sure they are sane
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64 inline void pinSetup(void)
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65 {
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67 // AVR
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68 #if defined(_at90usb162_) || defined(_atmega32u4_) || defined(_at90usb646_) || defined(_at90usb1286_)
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69
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70 // For each pin, 0=input, 1=output
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71 #if defined(__AVR_AT90USB1286__)
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72 DDRA = 0x00;
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73 #endif
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74 DDRB = 0x00;
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75 DDRC = 0x00;
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76 DDRD = 0x00;
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77 DDRE = 0x00;
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78 DDRF = 0x00;
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79
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80
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81 // Setting pins to either high or pull-up resistor
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82 #if defined(__AVR_AT90USB1286__)
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83 PORTA = 0x00;
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84 #endif
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85 PORTB = 0x00;
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86 PORTC = 0x00;
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87 PORTD = 0x00;
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88 PORTE = 0x00;
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89 PORTF = 0x00;
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90
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91 // ARM
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92 #elif defined(_mk20dx128_)
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93 // TODO
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94 #endif
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95 }
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96
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98 inline void usbTimerSetup(void)
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99 {
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100 // AVR
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101 #if defined(_at90usb162_) || defined(_atmega32u4_) || defined(_at90usb646_) || defined(_at90usb1286_)
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102
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103 // Setup with 16 MHz clock
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104 CPU_PRESCALE( 0 );
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105
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106 // Setup ISR Timer for flagging a kepress send to USB
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107 // Set to 256 * 1024 (8 bit timer with Clock/1024 prescalar) timer
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108 TCCR0A = 0x00;
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109 TCCR0B = 0x03;
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110 TIMSK0 = (1 << TOIE0);
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111
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112 // ARM
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113 #elif defined(_mk20dx128_)
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114 // TODO
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115 #endif
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116 }
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117
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118
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119 int main(void)
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120 {
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121 // Configuring Pins
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122 pinSetup();
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123 init_errorLED();
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124
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125 // Setup USB Module
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126 usb_setup();
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127
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128 // Setup ISR Timer for flagging a kepress send to USB
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129 usbTimerSetup();
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130
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131 // Main Detection Loop
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132 uint8_t ledTimer = 15; // Enable LED for a short time
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133 while ( 1 )
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134 {
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135 // Setup the scanning module
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136 scan_setup();
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137
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138 while ( 1 )
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139 {
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140 // Acquire Key Indices
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141 // Loop continuously until scan_loop returns 0
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142 cli();
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143 while ( scan_loop() );
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144 sei();
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145
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146 // Run Macros over Key Indices and convert to USB Keys
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147 process_macros();
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148
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149 // Send keypresses over USB if the ISR has signalled that it's time
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150 if ( !sendKeypresses )
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151 continue;
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152
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153 // Send USB Data
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154 usb_send();
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155
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156 // Clear sendKeypresses Flag
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157 sendKeypresses = 0;
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158
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159 // Indicate Error, if valid
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160 errorLED( ledTimer );
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161
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162 if ( ledTimer > 0 )
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163 ledTimer--;
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164 }
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165
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166 // Loop should never get here (indicate error)
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167 ledTimer = 255;
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168
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169 // HID Debug Error message
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170 erro_print("Detection loop error, this is very bad...bug report!");
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171 }
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172 }
0
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173
67
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174
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175 // ----- Interrupts -----
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176
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177 // AVR - USB Keyboard Data Send Counter Interrupt
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178 #if defined(_at90usb162_) || defined(_atmega32u4_) || defined(_at90usb646_) || defined(_at90usb1286_)
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179
6
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180 ISR( TIMER0_OVF_vect )
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181 {
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182 sendKeypressCounter++;
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183 if ( sendKeypressCounter > USB_TRANSFER_DIVIDER ) {
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184 sendKeypressCounter = 0;
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185 sendKeypresses = 1;
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186 }
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187 }
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188
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189 // ARM - USB Keyboard Data Send Counter Interrupt
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190 #elif defined(_mk20dx128_)
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191 // TODO
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192 #endif
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193