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1 #include <Arduino.h>
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2 #include <LiquidCrystal.h>
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3
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4 const int pinLogicMain = 8;
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5 const int pinLogicSecondary = 9;
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6 const int pinNextGate = 10;
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7 const int pinEnter = 11;
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8 const int pinLed = 12;
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9
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10 int stateLogicMain = 0;
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11 int stateLogicSecondary = 0;
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12 int stateNextGate = 0;
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13 int stateEnter = 0;
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14 int stateLed = 0;
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15
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16 int logicModeEnabled = 0;
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17
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18 #define GATES_SIZE 7
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19 const char* gates[GATES_SIZE] = {"AND", "OR", "NOT", "NAND", "NOR", "XOR", "XNOR"};
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20 int gateSelected = -1;
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21
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22 const int rs = 2, en = 3, d4 = 4, d5 = 5, d6 = 6, d7 = 7;
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23 LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
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24
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25 void setup()
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26 {
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27 Serial.begin(9600);
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28
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29 pinMode(pinLogicMain, INPUT);
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30 pinMode(pinLogicSecondary, INPUT);
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31 pinMode(pinNextGate, INPUT);
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32 pinMode(pinEnter, INPUT);
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33 pinMode(pinLed, OUTPUT);
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34
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35 lcd.begin(16, 2);
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36 lcd.print("Select gate");
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37 }
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38
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39 void ledControl(int enabled)
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40 {
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41 if (enabled) {
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42 digitalWrite(pinLed, HIGH);
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43 } else {
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44 digitalWrite(pinLed, LOW);
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45 }
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46 }
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47
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48 void loop()
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49 {
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50 stateLogicMain = digitalRead(pinLogicMain);
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51 stateLogicSecondary = digitalRead(pinLogicSecondary);
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52 stateNextGate = digitalRead(pinNextGate);
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53 stateEnter = digitalRead(pinEnter);
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54 stateLed = digitalRead(pinLed);
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55
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56 if (stateNextGate == HIGH) {
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57 logicModeEnabled = 0;
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58
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59 if (gateSelected + 1 < GATES_SIZE) {
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60 gateSelected++;
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61 } else {
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62 gateSelected = 0;
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63 }
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64
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65 lcd.clear();
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66
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67 char msg[16];
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68 sprintf(msg, "%i -> %s", gateSelected, gates[gateSelected]);
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69 lcd.setCursor(0, 0);
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70 lcd.print(msg);
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71 delay(500);
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72 }
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73
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74 if (stateEnter == HIGH && logicModeEnabled == 0) {
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75 logicModeEnabled = 1;
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76 }
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77
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78 if (logicModeEnabled == 1) {
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79 lcd.setCursor(0, 1);
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80 lcd.print("Enabled");
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81 lcd.setCursor(0, 0);
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82
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83 switch (gateSelected) {
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84 case 0:
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85 ledControl(stateLogicMain && stateLogicSecondary);
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86 break;
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87 case 1:
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88 ledControl(stateLogicMain || stateLogicSecondary);
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89 break;
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90 case 2:
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91 ledControl(!stateLogicMain);
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92 break;
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93 case 3:
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94 ledControl(!(stateLogicMain && stateLogicSecondary));
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95 break;
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96 case 4:
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97 ledControl(!(stateLogicMain || stateLogicSecondary));
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98 break;
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99 case 5:
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100 ledControl(stateLogicMain != stateLogicSecondary);
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101 break;
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102 case 6:
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103 ledControl(stateLogicMain == stateLogicSecondary);
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104 break;
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105 }
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106 } else {
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107 digitalWrite(pinLed, LOW);
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108 }
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109 }
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