#include <Adafruit_NeoPixel.h>

#define IROUTPUTPIN D0 // IR diode on my custom PCB

// Made for RP2040
#define NEOPOWERPIN 11 // Provides voltage for the built-in NeoPixel
#define NEOPIXELPIN 12 // Datapin for the the built-in NeoPixel

#define NUMPIXELS 1 //Amount of NeoPixels

Adafruit_NeoPixel pixel(NUMPIXELS, NEOPIXELPIN, NEO_RGB + NEO_KHZ800);

#define DELAYVAL 100

bool led_on = false;

void setup() {
  pinMode(LED_BUILTIN, OUTPUT); // Initialize digital pin LED_BUILTIN as an output.
  pinMode(IROUTPUTPIN, OUTPUT); // Initialize the IR pin as an output.

  pinMode(NEOPOWERPIN, OUTPUT); // Initialize digital pin NEOPOWERPIN as an output.
  digitalWrite(NEOPOWERPIN, HIGH); // Power for the NeoPixel
  pixel.begin();

  Serial.begin(9600);
}

void loop() {
  if (Serial.available()) {
    char char_in = Serial.read(); // Read one character
    //Serial.write(char_in); // Return the character for debug

    if (char_in == '1') {
      // Turn led on
      pixel.clear();
      pixel.setPixelColor(0, 150,100,50);
      pixel.show();
      led_on = true;
      Serial.println("LED,0,1"); // Send confirm
    } else if (char_in == '0') {
      // Turn led off
      pixel.clear();
      pixel.show();
      led_on = false;
      Serial.println("LED,0,0"); // Send confirm
    } else if (char_in == '\n') {
      // Send status of the led
      if (led_on) {
        Serial.println("LED,0,1");
      } else {
        Serial.println("LED,0,0");
      }
    } else {
      // Blink only the small built-led
      digitalWrite(LED_BUILTIN, LOW);
      delay(DELAYVAL);
      digitalWrite(LED_BUILTIN, HIGH);
      Serial.println("Not recognised");
    }
  }
  delay(DELAYVAL);
  
  /*
    To meet the requirements, I added this to blink
    the IR led I have on the PCB I made in week 8.
  */
  if (!led_on) {
    digitalWrite(IROUTPUTPIN, !digitalRead(IROUTPUTPIN));
  }
}