#define RPin 11
#define GPin 10      
#define BPin 9
#define RvalPin A0
#define GValPin A1
#define BValPin A2

void setup() {
  Serial.begin(115200);
  Serial.println("Hello, STM32 RGB Control!");
  
  pinMode(RPin, OUTPUT);
  pinMode(GPin, OUTPUT);
  pinMode(BPin, OUTPUT);
  
  digitalWrite(RPin, LOW);
  digitalWrite(GPin, LOW);
  digitalWrite(BPin, LOW);
}

void loop() {
  // Read potentiometer values (0-1023)
  int rVal = analogRead(RvalPin);
  int gVal = analogRead(GValPin);
  int bVal = analogRead(BValPin);
  
  // Print values to Serial Monitor
  Serial.print("R:"); Serial.print(rVal);
  Serial.print(" G:"); Serial.print(gVal);
  Serial.print(" B:"); Serial.println(bVal);
  
  // Auto-control LEDs: ON if pot > 200 (~1V threshold)
  digitalWrite(RPin, rVal > 200 ? HIGH : LOW);
  digitalWrite(GPin, gVal > 200 ? HIGH : LOW);
  digitalWrite(BPin, bVal > 200 ? HIGH : LOW);
  
  // Handle serial commands (r/g/b for manual override)
  if (Serial.available() > 0) {
    char cmd = Serial.read();
    Serial.print("Cmd: ");
    Serial.println(cmd);
    
    switch (cmd) {
      case 'r':  // Red only
        digitalWrite(RPin, HIGH);
        digitalWrite(GPin, LOW);
        digitalWrite(BPin, LOW);
        break;
      case 'g':  // Green only
        digitalWrite(RPin, LOW);
        digitalWrite(GPin, HIGH);
        digitalWrite(BPin, LOW);
        break;
      case 'b':  // Blue only
        digitalWrite(RPin, LOW);
        digitalWrite(GPin, LOW);
        digitalWrite(BPin, HIGH);
        break;
      case '0':  // All off
        digitalWrite(RPin, LOW);
        digitalWrite(GPin, LOW);
        digitalWrite(BPin, LOW);
        break;
    }
  }
  
  delay(100);  // Responsive update rate
}