#include <Wire.h>
#include <Adafruit_GFX.h> 
#include <Adafruit_SSD1306.h>

#define RED_PIN 25 #define GREEN_PIN 26 #define BLUE_PIN 27

#define SCREEN_WIDTH 128 #define SCREEN_HEIGHT 64 Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

String emotion = ""; 

void setup() {
Serial.begin(115200);

pinMode(RED_PIN, OUTPUT); 
pinMode(GREEN_PIN, OUTPUT); 
pinMode(BLUE_PIN, OUTPUT);

digitalWrite(RED_PIN, LOW); digitalWrite(GREEN_PIN, LOW); digitalWrite(BLUE_PIN, LOW);

if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C))
{ Serial.println(F("OLED failed to start!")); for(;;); }

display.clearDisplay(); 
display.setTextSize(1); 
display.setTextColor(SSD1306_WHITE); 
display.setCursor(0, 0); 
display.println(F("Waiting for emotion...")); 
display.display(); }

void loop() {
    if (Serial.available() > 0) { emotion = Serial.readStringUntil('\n');
   emotion.trim();

display.clearDisplay();
display.setCursor(0, 0);


display.println(F("Emotion:"));
display.println(emotion);
display.display();


if (emotion == "Happy") {
 
  digitalWrite(RED_PIN, LOW);
  digitalWrite(GREEN_PIN, HIGH);
  digitalWrite(BLUE_PIN, LOW);
} else if (emotion == "Sad") {
  
  digitalWrite(RED_PIN, LOW);
  digitalWrite(GREEN_PIN, LOW);
  digitalWrite(BLUE_PIN, HIGH);
} else if (emotion == "Angry") {
  
  digitalWrite(RED_PIN, HIGH);
  digitalWrite(GREEN_PIN, LOW);
  digitalWrite(BLUE_PIN, LOW);
} 
} }