/*
  Rui Santos & Sara Santos - Random Nerd Tutorials
  Complete project details at https://RandomNerdTutorials.com/esp-now-esp32-arduino-ide/
  Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files.
  The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
*/
#include <esp_now.h>
#include <WiFi.h>
#include <MQ135.h>

int analogMq135 = 16;
int buzz = 19;

MQ135 mq135_sensor(analogMq135);

// REPLACE WITH YOUR RECEIVER MAC Address
uint8_t broadcastAddress[] = {0x64, 0xe8, 0x33, 0x5d, 0x0f, 0x84};

// Structure example to send data
// Must match the receiver structure
typedef struct message {
  int a; // Nilai smoke sensor
  bool b; // Apakah udh lewatin treshold rokok
  bool c; // buzzer / led nyala or nah
} message;

message airqual;

esp_now_peer_info_t peerInfo;

// callback when data is sent
void OnDataSent(const uint8_t *mac_addr, esp_now_send_status_t status) {
  Serial.print("\r\nLast Packet Send Status:\t");
  Serial.println(status == ESP_NOW_SEND_SUCCESS ? "Delivery Success" : "Delivery Fail");
}

void setup() {
  // Init Serial Monitor
  Serial.begin(115200);
  pinMode(analogMq135, INPUT);
  pinMode(buzz,OUTPUT);

  // Set device as a Wi-Fi Station
  WiFi.mode(WIFI_STA);

  // Init ESP-NOW
  if (esp_now_init() != ESP_OK) {
    Serial.println("Error initializing ESP-NOW");
    return;
  }

  esp_now_register_send_cb(OnDataSent);
  
  // Register peer
  memcpy(peerInfo.peer_addr, broadcastAddress, 6);
  peerInfo.channel = 0;  
  peerInfo.encrypt = false;
  
  // Add peer        
  if (esp_now_add_peer(&peerInfo) != ESP_OK){
    Serial.println("Failed to add peer");
    return;
  }
}
 
void loop() {
  int16_t ValuePPMSensor = analogRead(analogMq135);
  int ppmValueMapped = (ValuePPMSensor/4.095);

  if (ppmValueMapped > 100) {
    strcpy(message.a, "THIS IS A CHAR");
    message.b = true;
    message.c = true;
      
    // Kirim message via ESP-NOW
    esp_err_t result = esp_now_send(broadcastAddress, (uint8_t *) &message, sizeof(message));
  }

  delay(1000); // delya pembacaan sensor
}