AirCare_AirPurifier.ino

#include <esp_now.h>
#include <WiFi.h>

// Replace with your network credentials (STATION)
const char* ssid = "olleh_WiFi_215A";
const char* password = "000000486a";

typedef struct esp_struct {
  int x;
  int y;
} esp_struct;
//Create a struct_message called myData
esp_struct esp_received;

// callback function that will be executed when data is received
void OnDataRecv(const uint8_t * mac_addr, const uint8_t *incomingData, int len) { 
  // Copies the sender mac address to a string
  char macStr[18];
  Serial.print("Packet received from: ");
  snprintf(macStr, sizeof(macStr), "%02x:%02x:%02x:%02x:%02x:%02x",
           mac_addr[0], mac_addr[1], mac_addr[2], mac_addr[3], mac_addr[4], mac_addr[5]);
  Serial.println(macStr);
  
  memcpy(&esp_received, incomingData, sizeof(esp_received));
  Serial.print("Bytes received: ");
  Serial.println(len);
  Serial.print("x: ");
  Serial.println(esp_received.x);
  Serial.print("y: ");
  Serial.println(esp_received.y);
  Serial.println();

  if(esp_received.x == 1) {
    Serial.print("HIGH");
    digitalWrite(27, HIGH);
  } else {
    digitalWrite(27, LOW);
  }
}

void setup() {
  // Initialize Serial Monitor
  Serial.begin(115200);

  // Set the device as a Station and Soft Access Point simultaneously
  WiFi.mode(WIFI_AP_STA);
  
  // Set device as a Wi-Fi Station
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Setting as a Wi-Fi Station..");
  }
  Serial.print("Station IP Address: ");
  Serial.println(WiFi.localIP());
  Serial.print("Wi-Fi Channel: ");
  Serial.println(WiFi.channel());

  // Init ESP-NOW
  if (esp_now_init() != ESP_OK) {
    Serial.println("Error initializing ESP-NOW");
    return;
  }
  
  // Once ESPNow is successfully Init, we will register for recv CB to
  // get recv packer info
  esp_now_register_recv_cb(OnDataRecv);
  pinMode(27,OUTPUT);
}
 
void loop() {
  static unsigned long lastEventTime = millis();
  static const unsigned long EVENT_INTERVAL_MS = 5000;
  if ((millis() - lastEventTime) > EVENT_INTERVAL_MS) {
    lastEventTime = millis();
  }
}