/************************************************************************************************* 
                                      PROGRAMMINFO                                      
************************************************************************************************** 
Funktion: ESP32 NOW Empfänger
**************************************************************************************************
Version: 18.09.2021
**************************************************************************************************
Board: ESP32vn IoT UNO V1.0.4
**************************************************************************************************
C++ Arduino IDE V1.8.13
**************************************************************************************************
Einstellungen:
https://dl.espressif.com/dl/package_esp32_index.json
http://dan.drown.org/stm32duino/package_STM32duino_index.json
https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_dev_index.json
**************************************************************************************************
Librarys
- WiFi.h V0.16.1
**************************************************************************************************
 
 **************************************************************************************************/
#include <esp_now.h>
#include <WiFi.h>

typedef struct struct_message {
    char character[100];
    int integer;
    float floating_value;
    bool bool_value;
} struct_message;


struct_message message;

void data_receive(const uint8_t * mac, const uint8_t *incomingData, int len) {
  memcpy(&message, incomingData, sizeof(message));
  Serial.print("Bytes received: ");
  Serial.println(len);
  Serial.print("Char: ");
  Serial.println(message.character);
  Serial.print("Int: ");
  Serial.println(message.integer);
  Serial.print("Float: ");
  Serial.println(message.floating_value);
  Serial.print("Bool: ");
  Serial.println(message.bool_value);
  Serial.println();
}
 
void setup() {
  Serial.begin(115200);
  WiFi.mode(WIFI_STA);

  if (esp_now_init() != ESP_OK) {
    Serial.println("Error initializing ESP-NOW");
    return;
  }
  
  esp_now_register_recv_cb(data_receive);
}
 
void loop() {

}