FullyFeaturedSSL_ESP32_W5500.ino

/****************************************************************************************************************************
  FullyFeatureSSL_ESP32_W5500.ino

  AsyncMQTT_ESP32 is a library for ESP32 boards using WiFi or LwIP W5500, LAN8720 or ENC28J60

  Based on and modified from :

  1) async-mqtt-client (https://github.com/marvinroger/async-mqtt-client)
  2) async-mqtt-client (https://github.com/khoih-prog/AsyncMQTT_Generic)

  Built by Khoi Hoang https://github.com/khoih-prog/AsyncMQTT_ESP32
 *****************************************************************************************************************************/

#include "defines.h"

extern "C"
{
#include "freertos/FreeRTOS.h"
#include "freertos/timers.h"
}

#define ASYNC_TCP_SSL_ENABLED       true
//#define ASYNC_TCP_SSL_ENABLED       false

#include <AsyncMQTT_ESP32.h>

//#define MQTT_HOST         IPAddress(192, 168, 2, 110)
#define MQTT_HOST         "broker.emqx.io"        // Broker address

#if ASYNC_TCP_SSL_ENABLED

#define MQTT_SECURE     true

const uint8_t MQTT_SERVER_FINGERPRINT[] = {0x7e, 0x36, 0x22, 0x01, 0xf9, 0x7e, 0x99, 0x2f, 0xc5, 0xdb, 0x3d, 0xbe, 0xac, 0x48, 0x67, 0x5b, 0x5d, 0x47, 0x94, 0xd2};
const char *PubTopic  = "async-mqtt/ESP32_W5500_SSL_Pub";               // Topic to publish

#define MQTT_PORT       8883

#else

const char *PubTopic  = "async-mqtt/ESP32_W5500_Pub";                   // Topic to publish

#define MQTT_PORT       1883

#endif

AsyncMqttClient mqttClient;
TimerHandle_t mqttReconnectTimer;

void connectToMqtt()
{
  Serial.println("Connecting to MQTT...");
  mqttClient.connect();
}

void ETH_event(WiFiEvent_t event)
{
  switch (event)
  {
#if USING_CORE_ESP32_CORE_V200_PLUS

    case ARDUINO_EVENT_ETH_START:
      Serial.println("ETH starting");
      break;

    case ARDUINO_EVENT_ETH_CONNECTED:
      Serial.println("ETH connected");
      break;

    case ARDUINO_EVENT_ETH_GOT_IP:
      Serial.println("ETH got IP");
      Serial.print("IP address: ");
      Serial.println(ETH.localIP());
      connectToMqtt();
      break;

    case ARDUINO_EVENT_ETH_DISCONNECTED:
      Serial.println("ETH lost connection");

      // ensure we don't reconnect to MQTT when no ETH
      xTimerStop(mqttReconnectTimer, 0);

      break;

    case ARDUINO_EVENT_ETH_STOP:
      Serial.println("ETH stops");

      // ensure we don't reconnect to MQTT when no ETH
      xTimerStop(mqttReconnectTimer, 0);

      break;
#else

    case SYSTEM_EVENT_ETH_CONNECTED:
      erial.println(F("ETH Connected"));
      break;

    case SYSTEM_EVENT_ETH_GOT_IP:
      Serial.println("ETH connected");
      Serial.println("IP address: ");
      Serial.println(ETH.localIP());
      connectToMqtt();
      break;

    case SYSTEM_EVENT_ETH_DISCONNECTED:
    case SYSTEM_EVENT_ETH_STOP:
      Serial.println("ETH lost connection");

      // ensure we don't reconnect to MQTT when no ETH
      xTimerStop(mqttReconnectTimer, 0);

      break;
#endif

    default:
      break;
  }
}

void printSeparationLine()
{
  Serial.println("************************************************");
}

void onMqttConnect(bool sessionPresent)
{
  Serial.print("Connected to MQTT broker: ");
  Serial.print(MQTT_HOST);
  Serial.print(", port: ");
  Serial.println(MQTT_PORT);
  Serial.print("PubTopic: ");
  Serial.println(PubTopic);

  printSeparationLine();
  Serial.print("Session present: ");
  Serial.println(sessionPresent);

  uint16_t packetIdSub = mqttClient.subscribe(PubTopic, 2);
  Serial.print("Subscribing at QoS 2, packetId: ");
  Serial.println(packetIdSub);

  mqttClient.publish(PubTopic, 0, true, "ESP32_W5500 Test");
  Serial.println("Publishing at QoS 0");

  uint16_t packetIdPub1 = mqttClient.publish(PubTopic, 1, true, "test 2");
  Serial.print("Publishing at QoS 1, packetId: ");
  Serial.println(packetIdPub1);

  uint16_t packetIdPub2 = mqttClient.publish(PubTopic, 2, true, "test 3");
  Serial.print("Publishing at QoS 2, packetId: ");
  Serial.println(packetIdPub2);

  printSeparationLine();
}

void onMqttDisconnect(AsyncMqttClientDisconnectReason reason)
{
  (void) reason;

  Serial.println("Disconnected from MQTT.");

  if (ESP32_W5500_isConnected())
  {
    xTimerStart(mqttReconnectTimer, 0);
  }
}

void onMqttSubscribe(const uint16_t& packetId, const uint8_t& qos)
{
  Serial.println("Subscribe acknowledged.");
  Serial.print("  packetId: ");
  Serial.println(packetId);
  Serial.print("  qos: ");
  Serial.println(qos);
}

void onMqttUnsubscribe(const uint16_t& packetId)
{
  Serial.println("Unsubscribe acknowledged.");
  Serial.print("  packetId: ");
  Serial.println(packetId);
}

void onMqttMessage(char* topic, char* payload, const AsyncMqttClientMessageProperties& properties,
                   const size_t& len, const size_t& index, const size_t& total)
{
  (void) payload;

  Serial.println("Publish received.");
  Serial.print("  topic: ");
  Serial.println(topic);
  Serial.print("  qos: ");
  Serial.println(properties.qos);
  Serial.print("  dup: ");
  Serial.println(properties.dup);
  Serial.print("  retain: ");
  Serial.println(properties.retain);
  Serial.print("  len: ");
  Serial.println(len);
  Serial.print("  index: ");
  Serial.println(index);
  Serial.print("  total: ");
  Serial.println(total);
}

void onMqttPublish(const uint16_t& packetId)
{
  Serial.println("Publish acknowledged");
  Serial.print("  packetId: ");
  Serial.println(packetId);
}

void setup()
{
  Serial.begin(115200);

  while (!Serial && millis() < 5000);

  Serial.print("\nStarting FullyFeatureSSL_ESP32_W5500 on ");
  Serial.print(ARDUINO_BOARD);
  Serial.println(" with " + String(SHIELD_TYPE));
  Serial.println(WEBSERVER_ESP32_W5500_VERSION);
  Serial.println(ASYNC_MQTT_ESP32_VERSION);

  AMQTT_LOGWARN(F("Default SPI pinout:"));
  AMQTT_LOGWARN1(F("SPI_HOST:"), ETH_SPI_HOST);
  AMQTT_LOGWARN1(F("MOSI:"), MOSI_GPIO);
  AMQTT_LOGWARN1(F("MISO:"), MISO_GPIO);
  AMQTT_LOGWARN1(F("SCK:"),  SCK_GPIO);
  AMQTT_LOGWARN1(F("CS:"),   CS_GPIO);
  AMQTT_LOGWARN1(F("INT:"),  INT_GPIO);
  AMQTT_LOGWARN1(F("SPI Clock (MHz):"), SPI_CLOCK_MHZ);
  AMQTT_LOGWARN(F("========================="));

  mqttReconnectTimer = xTimerCreate("mqttTimer", pdMS_TO_TICKS(2000), pdFALSE, (void*)0,
                                    reinterpret_cast<TimerCallbackFunction_t>(connectToMqtt));

  mqttClient.onConnect(onMqttConnect);
  mqttClient.onDisconnect(onMqttDisconnect);
  mqttClient.onSubscribe(onMqttSubscribe);
  mqttClient.onUnsubscribe(onMqttUnsubscribe);
  mqttClient.onMessage(onMqttMessage);
  mqttClient.onPublish(onMqttPublish);

  mqttClient.setServer(MQTT_HOST, MQTT_PORT);

#if ASYNC_TCP_SSL_ENABLED
  mqttClient.setSecure(MQTT_SECURE);

  if (MQTT_SECURE)
  {
    //mqttClient.addServerFingerprint((const uint8_t[])MQTT_SERVER_FINGERPRINT);
    mqttClient.addServerFingerprint((const uint8_t *)MQTT_SERVER_FINGERPRINT);
  }

#endif

  ///////////////////////////////////

  // To be called before ETH.begin()
  WiFi.onEvent(ETH_event);

  // start the ethernet connection and the server:
  // Use DHCP dynamic IP and random mac
  //bool begin(int MISO_GPIO, int MOSI_GPIO, int SCLK_GPIO, int CS_GPIO, int INT_GPIO, int SPI_CLOCK_MHZ,
  //           int SPI_HOST, uint8_t *W5500_Mac = W5500_Default_Mac);
  ETH.begin( MISO_GPIO, MOSI_GPIO, SCK_GPIO, CS_GPIO, INT_GPIO, SPI_CLOCK_MHZ, ETH_SPI_HOST );
  //ETH.begin( MISO_GPIO, MOSI_GPIO, SCK_GPIO, CS_GPIO, INT_GPIO, SPI_CLOCK_MHZ, ETH_SPI_HOST, mac[millis() % NUMBER_OF_MAC] );

  // Static IP, leave without this line to get IP via DHCP
  //bool config(IPAddress local_ip, IPAddress gateway, IPAddress subnet, IPAddress dns1 = 0, IPAddress dns2 = 0);
  //ETH.config(myIP, myGW, mySN, myDNS);

  ESP32_W5500_waitForConnect();

  ///////////////////////////////////
}

void loop()
{
}