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FullyFeaturedSSL_ESP32.ino
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FullyFeaturedSSL_ESP32.ino
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/****************************************************************************************************************************
FullyFeatureSSL_ESP32.ino
AsyncMqttClient_Generic is a library for ESP32, ESP8266, Protenta_H7, STM32F7, etc. with current AsyncTCP support
Based on and modified from :
1) async-mqtt-client (https://github.com/marvinroger/async-mqtt-client)
Built by Khoi Hoang https://github.com/khoih-prog/AsyncMqttClient_Generic
*****************************************************************************************************************************/
// Example project which can be built with SSL enabled or disabled.
// The espressif8266_stage platform must be installed.
// Refer to platformio.ini for the build configuration and platform installation.
#include "defines.h"
#include <WiFi.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_Generic.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_SSL_Pub"; // Topic to publish
#define MQTT_PORT 8883
#else
const char *PubTopic = "async-mqtt/ESP32_Pub"; // Topic to publish
#define MQTT_PORT 1883
#endif
AsyncMqttClient mqttClient;
TimerHandle_t mqttReconnectTimer;
TimerHandle_t wifiReconnectTimer;
void connectToWifi()
{
Serial.println("Connecting to Wi-Fi...");
WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
}
void connectToMqtt()
{
Serial.println("Connecting to MQTT...");
mqttClient.connect();
}
void WiFiEvent(WiFiEvent_t event)
{
switch (event)
{
#if USING_CORE_ESP32_CORE_V200_PLUS
case ARDUINO_EVENT_WIFI_READY:
Serial.println("WiFi ready");
break;
case ARDUINO_EVENT_WIFI_STA_START:
Serial.println("WiFi STA starting");
break;
case ARDUINO_EVENT_WIFI_STA_CONNECTED:
Serial.println("WiFi STA connected");
break;
case ARDUINO_EVENT_WIFI_STA_GOT_IP6:
case ARDUINO_EVENT_WIFI_STA_GOT_IP:
Serial.println("WiFi connected");
Serial.print("IP address: "); Serial.println(WiFi.localIP());
connectToMqtt();
break;
case ARDUINO_EVENT_WIFI_STA_LOST_IP:
Serial.println("WiFi lost IP");
break;
case ARDUINO_EVENT_WIFI_STA_DISCONNECTED:
Serial.println("WiFi lost connection");
xTimerStop(mqttReconnectTimer, 0); // ensure we don't reconnect to MQTT while reconnecting to Wi-Fi
xTimerStart(wifiReconnectTimer, 0);
break;
#else
case SYSTEM_EVENT_STA_GOT_IP:
Serial.println("WiFi connected");
Serial.println("IP address: "); Serial.println(WiFi.localIP());
connectToMqtt();
break;
case SYSTEM_EVENT_STA_DISCONNECTED:
Serial.println("WiFi lost connection");
xTimerStop(mqttReconnectTimer, 0); // ensure we don't reconnect to MQTT while reconnecting to Wi-Fi
xTimerStart(wifiReconnectTimer, 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 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 (WiFi.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 on "); Serial.println(ARDUINO_BOARD);
Serial.println(ASYNC_MQTT_GENERIC_VERSION);
mqttReconnectTimer = xTimerCreate("mqttTimer", pdMS_TO_TICKS(2000), pdFALSE, (void*)0, reinterpret_cast<TimerCallbackFunction_t>(connectToMqtt));
wifiReconnectTimer = xTimerCreate("wifiTimer", pdMS_TO_TICKS(2000), pdFALSE, (void*)0, reinterpret_cast<TimerCallbackFunction_t>(connectToWifi));
WiFi.onEvent(WiFiEvent);
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
connectToWifi();
}
void loop()
{
}