1 | #include <Adafruit_NeoPixel.h>
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2 | #include <avr/io.h>
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3 | #include <avr/interrupt.h>
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4 |
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5 | #define NUMPIXELSA 5
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6 | #define NUMPIXELSB 5
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7 | #define NUMPIXELSC 5
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8 |
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9 | Adafruit_NeoPixel strip_A = Adafruit_NeoPixel(NUMPIXELSA, 0, NEO_GRB + NEO_KHZ800); // 3 Strips designed to be offset by 120 degrees on a wheel
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10 | Adafruit_NeoPixel strip_B = Adafruit_NeoPixel(NUMPIXELSB, 1, NEO_GRB + NEO_KHZ800);
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11 | Adafruit_NeoPixel strip_C = Adafruit_NeoPixel(NUMPIXELSC, 3, NEO_GRB + NEO_KHZ800);
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12 |
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13 | //uint32_t whiteA = strip_A.Color(255, 255, 255); disabled for testing purposes
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14 | //uint32_t whiteB = strip_B.Color(255, 255, 255);
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15 | //uint32_t whiteC = strip_C.Color(255, 255, 255);
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16 |
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17 | uint32_t offA = strip_A.Color(0, 0, 0);
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18 | uint32_t offB = strip_B.Color(0, 0, 0);
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19 | uint32_t offC = strip_C.Color(0, 0, 0);
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20 |
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21 | uint32_t whiteA = strip_A.Color(0, 0, 255); //Testcolor to better see it in the simulator ;)
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22 | uint32_t whiteB = strip_B.Color(0, 0, 255);
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23 | uint32_t whiteC = strip_C.Color(0, 0, 255);
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24 |
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25 | volatile unsigned long time = 0;
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26 | volatile unsigned long time_last = 0;
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27 | volatile unsigned int rpm_array[3] = {0, 0, 0}; // 3 samples averaged
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28 | unsigned long refreshInterval = 10; // in ms, for LCD refresh timing
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29 | unsigned long previousMillis = 0;
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30 | volatile unsigned int rpm = 0;
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31 | volatile unsigned int last_rpm = 0;
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32 | unsigned int rotDelay = 0; // Calculated time based variable to control the duration and delay between LEDs switching on and off, integer instead of float to test and save processing time
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33 | unsigned int rotDelayA = 0;
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34 | void setup()
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35 | {
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36 | GIMSK = 0b01000000; // Enable INT0 External Interrupt
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37 | MCUCR = 0b00000011; // Rising-Edge Triggered INT0
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38 |
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39 | DDRB &= ~(1<<PB5); //Set unused pins as input.
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40 | DDRB &= ~(1<<PB4);
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41 | PORTB |= (1 << PB5); // Enable pullup resistor
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42 | PORTB |= (1 << PB4);
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43 |
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44 | strip_A.begin(); // Initialize Neopixel Strips
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45 | strip_B.begin();
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46 | strip_C.begin();
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47 | strip_A.setBrightness(230); // Set Strips to approx 90% Brightness
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48 | strip_B.setBrightness(230);
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49 | strip_C.setBrightness(230);
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50 | strip_A.show(); // Send empty data to strips to reset floating output turning all Neopixels off
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51 | strip_B.show();
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52 | strip_C.show();
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53 |
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54 | // for (int a = 0; a < NUMPIXELSA; a++) { // Strip Test
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55 | // strip_A.setPixelColor(a, whiteA );
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56 | // strip_A.show(); // Send data
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57 | // delay(100); // Delay to test each strip
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58 | // }
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59 | // for (int a = 0; a < NUMPIXELSA; a++) {
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60 | // strip_A.setPixelColor(a, offA );
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61 | // strip_A.show();
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62 | // }
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63 | // for (int b = 0; b < NUMPIXELSB; b++) {
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64 | // strip_B.setPixelColor(b, whiteB);
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65 | // strip_B.show();
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66 | // delay(100);
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67 | // }
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68 | // for (int b = 0; b < NUMPIXELSA; b++) {
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69 | // strip_B.setPixelColor(b, offB );
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70 | // strip_B.show();
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71 | // }
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72 | // for (int c = 0; c < NUMPIXELSC; c++) {
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73 | // strip_C.setPixelColor(c, whiteC);
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74 | // strip_C.show();
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75 | // delay(100);
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76 | // }
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77 | // for (int c = 0; c < NUMPIXELSA; c++) {
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78 | // strip_C.setPixelColor(c, offC );
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79 | // strip_C.show();
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80 | // }
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81 | sei(); // Enable Interrupts
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82 | }
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83 | void update_rpm() {
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84 | rpm = 60 * (1000000 / (time * 1));
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85 | rotDelay = 360000 / (rpm * 20);
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86 | rotDelayA = ((rotDelay / 3) / 3);
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87 | }
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88 | void strips () {
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89 | for (int a = 0; a < NUMPIXELSA; a++) {
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90 | strip_A.setPixelColor(a, whiteA );
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91 | strip_A.show();
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92 | delay(rotDelay);
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93 | }
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94 | for (int a = 0; a < NUMPIXELSA; a++) {
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95 | strip_A.setPixelColor(a, offA );
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96 | strip_A.show();
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97 | delay(rotDelay); for (int a = 0; a < NUMPIXELSA; a++) {
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98 | strip_A.setPixelColor(a, whiteA );
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99 | strip_A.show();
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100 | delay(rotDelay);
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101 | }
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102 | for (int a = 0; a < NUMPIXELSA; a++) {
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103 | strip_A.setPixelColor(a, offA );
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104 | strip_A.show();
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105 | delay(rotDelay);
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106 | }
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107 | delay(rotDelayA);
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108 | for (int b = 0; b < NUMPIXELSB; b++) {
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109 | strip_B.setPixelColor(b, whiteB );
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110 | strip_B.show();
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111 | delay(rotDelay);
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112 | }
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113 | for (int b = 0; b < NUMPIXELSB; b++) {
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114 | strip_B.setPixelColor(b, offB );
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115 | strip_B.show();
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116 | delay(rotDelay);
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117 | }
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118 | delay(rotDelayA);
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119 | for (int c = 0; c < NUMPIXELSC; c++) {
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120 | strip_C.setPixelColor(c, whiteC );
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121 | strip_C.show();
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122 | delay(rotDelay);
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123 | }
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124 | for (int c = 0; c < NUMPIXELSC; c++) {
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125 | strip_C.setPixelColor(c, offC );
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126 | strip_C.show();
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127 | delay(rotDelay);
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128 | }
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129 | delay(rotDelayA);
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130 | }
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131 | delay(rotDelayA);
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132 | for (int b = 0; b < NUMPIXELSB; b++) {
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133 | strip_B.setPixelColor(b, whiteB );
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134 | strip_B.show();
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135 | delay(rotDelay);
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136 | }
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137 | for (int b = 0; b < NUMPIXELSB; b++) {
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138 | strip_B.setPixelColor(b, offB );
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139 | strip_B.show();
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140 | delay(rotDelay);
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141 | }
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142 | delay(rotDelayA);
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143 | for (int c = 0; c < NUMPIXELSC; c++) {
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144 | strip_C.setPixelColor(c, whiteC );
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145 | strip_C.show();
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146 | delay(rotDelay);
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147 | }
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148 | for (int c = 0; c < NUMPIXELSC; c++) {
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149 | strip_C.setPixelColor(c, offC );
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150 | strip_C.show();
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151 | delay(rotDelay);
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152 | }
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153 | delay(rotDelayA);
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154 | }
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155 | void loop() {
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156 | update_rpm(); // sensor ISR will look for time period
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157 | if (last_rpm - rpm != 0 ) { // update LCD only if there is a change of rpm
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158 | last_rpm = rpm;
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159 | // need to check the case that there is 0 rpm (full stop)
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160 | unsigned long currentMillis = millis();
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161 | if (currentMillis - previousMillis > refreshInterval) { // at a decent refresh rate
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162 | previousMillis = currentMillis;
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163 | }
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164 | }
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165 |
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166 | }
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167 |
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168 | ISR(INT0_vect) //Capture Hall via Interrupt
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169 | {
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170 | time = (micros() - time_last);
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171 | time_last = micros();
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172 | strips();
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173 |
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174 | }
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