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gerLedArdFinal.ino

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+#include <Arduino.h>
+
+#include <FastLED.h>
+
+void buttonPressed();
+
+// How many leds in your strip?
+#define NUM_LEDS 300
+
+//defining locations of pins
+#define DATA_PIN 2
+#define BUTTON_PIN 4
+
+// Define the array of leds
+CRGB leds[NUM_LEDS];
+
+//assigning locations of pins
+int buttonPin = 4;
+int ledPin = 13;
+
+//file object to store csv
+//File dataFile;
+
+unsigned volatile long buttonPressTime = millis();
+bool volatile buttonFlag = false;
+
+void buttonPressed() {
+  unsigned long current = millis();
+
+  if(buttonPressTime + 100 < current){
+    buttonFlag = true;
+    buttonPressTime = current;
+  }
+}
+
+void setup() {
+
+  FastLED.addLeds<NEOPIXEL, DATA_PIN>(leds, NUM_LEDS);  // GRB ordering is assumed
+  Serial.begin(9600);
+  pinMode(BUTTON_PIN, INPUT_PULLUP);  //use internal pullup resistor
+  attachInterrupt(buttonPin, buttonPressed, FALLING);
+
+}  //void setup
+
+int maxRounds = 5;     // max loop
+int roundCounter = 0;  // initialized counter
+
+double loopDelay = 1;
+int correctLED = 88;
+unsigned long startTime = 0;
+unsigned long loopTime = 0;
+unsigned long correctTime = 0;
+
+
+void loop() {
+  if (roundCounter > maxRounds - 1) {
+    fill_solid(leds, NUM_LEDS, CRGB::Black);  // turn LEDs off
+    FastLED.show();
+    Serial.println("Max rounds reached. Stopping program.");
+    while (true) {
+      // Program is effectively stopped here
+    }
+      //return; // Exit the loop function and stop further execution
+  }
+
+  for (int i = 0; i < NUM_LEDS; i++) {
+
+    //turns light on to white, delays, turns it off(black)
+    leds[i] = CRGB::White;
+    FastLED.show();
+    //delay(loopDelay);
+    delayMicroseconds(loopDelay);
+    leds[i] = CRGB::Black;
+    if (i == correctLED) correctTime = millis();
+    FastLED.show();
+  }
+
+  if (buttonFlag) {
+    long timeDiff = correctTime - buttonPressTime;
+    if (abs(timeDiff) < 10){
+      Serial.println("Perfect timing!");
+      Serial.println(correctTime);
+    } else if (timeDiff > 0) {
+      Serial.print("Too early! Time difference: ");
+      Serial.println(correctTime - buttonPressTime);
+    } else if (timeDiff < 0) {
+      Serial.print("Too late! Time difference: ");
+      Serial.println(buttonPressTime - correctTime);
+    }
+    buttonFlag = false;
+  }
+
+  roundCounter++;
+  }  //loop