// ==================================================== // ArduExams Copyright(C) 2018 Furkan Türkal // This program comes with ABSOLUTELY NO WARRANTY; This is free software, // and you are welcome to redistribute it under certain conditions; See // file LICENSE, which is part of this source code package, for details. // ==================================================== #define PIN_BUTTON 5 #define PIN_LED1 14 #define PIN_LED2 15 #define PIN_LED3 16 #define PIN_LED4 17 #define PIN_LED5 18 int LED_CAR_Data = 0; //0-RED, 1-YELLOW, 2-GREEN void setup() { pinMode(PIN_BUTTON, INPUT); pinMode(PIN_LED1, OUTPUT); pinMode(PIN_LED2, OUTPUT); pinMode(PIN_LED3, OUTPUT); pinMode(PIN_LED4, OUTPUT); pinMode(PIN_LED5, OUTPUT); randomSeed(analogRead(0)); Serial.begin(9600); } void turnOnLED(int led){ digitalWrite(PIN_LED1, LOW); digitalWrite(PIN_LED2, LOW); digitalWrite(PIN_LED3, LOW); digitalWrite(PIN_LED4, LOW); digitalWrite(PIN_LED5, LOW); if(led == 1){ digitalWrite(PIN_LED1, HIGH); } else if(led == 2){ digitalWrite(PIN_LED2, HIGH); } else if(led == 3){ digitalWrite(PIN_LED3, HIGH); } else if(led == 4){ digitalWrite(PIN_LED4, HIGH); } else if(led == 5){ digitalWrite(PIN_LED5, HIGH); } } void loop() { if(digitalRead(PIN_BUTTON) == HIGH){ turnOnLED(random(1, 5 + 1)); } }