//=================================================================================================//
// SLAVE (RECEPTOR )                                                                                         //
// Controlling LEDs with Two ESP8266 Uses ESP-NOW Protocol                                         //
// Edited and Adapted by: Engineer Jemerson Marques, On: 22.12.2019 - FVM Learning website         //
// Available at: https://www.fvml.com.br and on Youtube channel                                    //
// https://www.youtube.com/c/FVMLearning - I hope you have fun - Good luck                         //
//-------------------------------------------------------------------------------------------------//

#include <ESP8266WiFi.h>
extern "C" {
#include <espnow.h>
#include <user_interface.h>
}
 uint8_t mac[] = {0x5C, 0xCF, 0x7F, 0x4C, 0x82, 0x5C}; //AP MAC SLAVE'S ADDRESS

//=====================================================================================================

 int Led1=0; // TROQUEI O D0 por 0 //
  int Led2=2; //TROQUEI O D1 por 2 //

void initVariant() {
  WiFi.mode(WIFI_AP);
  wifi_set_macaddr(SOFTAP_IF, &mac[0]);
}

//=====================================================================================================

#define WIFI_CHANNEL 4

// Must match the controller struct
struct __attribute__((packed))DataStruct {
  char text[32];
unsigned int time;};

DataStruct receivedData;

//=====================================================================================================
void setup() {
  Serial.begin(115200); Serial.println();
  Serial.println("Starting EspnowSlave.ino");
  Serial.print("This node AP mac: "); Serial.println(WiFi.softAPmacAddress());
  Serial.print("This node STA mac: "); Serial.println(WiFi.macAddress());
  pinMode(Led1, OUTPUT);
  pinMode(Led2, OUTPUT);


  if (esp_now_init() != 0){
    Serial.println("*** ESP_Now init failed");
    while (true) {};
  }

  esp_now_set_self_role(ESP_NOW_ROLE_SLAVE);
  esp_now_register_recv_cb(receiveCallBackFunction);
  Serial.println("End of setup - waiting for messages");
}

//======================================================================================================

void loop() {
}

//======================================================================================================
void receiveCallBackFunction(uint8_t *senderMac, uint8_t *incomingData, uint8_t len) {
  memcpy(&receivedData, incomingData, sizeof(receivedData));

  String DataCompare = String(receivedData.text);

  if(DataCompare == "Button 01 pressed"){
  digitalWrite(Led1, !digitalRead(Led1));
  Serial.println(" Message = " + DataCompare);
 }
  if(DataCompare == "Button 02 pressed"){
  digitalWrite(Led2, !digitalRead(Led2));
  Serial.println(" Message = " + DataCompare);
   
  }
}

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