compile with esp mqtt lib

lib/espMqttClient/examples/tls-esp32/tls-esp32.ino

@@ -0,0 +1,145 @@
+#include <WiFi.h>
+#include <Ticker.h>
+#include <espMqttClient.h>
+
+#define WIFI_SSID "yourSSID"
+#define WIFI_PASSWORD "yourpass"
+
+#define MQTT_HOST "mqtt.yourhost.com"
+#define MQTT_PORT 8883
+#define MQTT_USER "username"
+#define MQTT_PASS "password"
+
+const char rootCA[] = \
+  "-----BEGIN CERTIFICATE-----\n" \
+  " add your certificate here \n" \
+  "-----END CERTIFICATE-----\n";
+
+espMqttClientSecure mqttClient;
+Ticker reconnectTimer;
+
+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) {
+  Serial.printf("[WiFi-event] event: %d\n", event);
+  switch(event) {
+    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");
+      reconnectTimer.once(5, connectToWiFi);
+      break;
+    default:
+      break;
+  }
+}
+
+void onMqttConnect(bool sessionPresent) {
+  Serial.println("Connected to MQTT.");
+  Serial.print("Session present: ");
+  Serial.println(sessionPresent);
+
+  uint16_t packetIdSub0 = mqttClient.subscribe("foo/bar/0", 0);
+  Serial.print("Subscribing at QoS 0, packetId: ");
+  Serial.println(packetIdSub0);
+
+  uint16_t packetIdPub0 = mqttClient.publish("foo/bar/0", 0, false, "test");
+  Serial.println("Publishing at QoS 0, packetId: ");
+  Serial.println(packetIdPub0);
+}
+
+void onMqttDisconnect(espMqttClientTypes::DisconnectReason reason) {
+  Serial.printf("Disconnected from MQTT: %u.\n", static_cast<uint8_t>(reason));
+
+  if (WiFi.isConnected()) {
+    reconnectTimer.once(5, connectToMqtt);
+  }
+}
+
+void onMqttSubscribe(uint16_t packetId, const espMqttClientTypes::SubscribeReturncode* codes, size_t len) {
+  Serial.println("Subscribe acknowledged.");
+  Serial.print("  packetId: ");
+  Serial.println(packetId);
+  for (size_t i = 0; i < len; ++i) {
+    Serial.print("  qos: ");
+    Serial.println(static_cast<uint8_t>(codes[i]));
+  }
+}
+
+void onMqttUnsubscribe(uint16_t packetId) {
+  Serial.println("Unsubscribe acknowledged.");
+  Serial.print("  packetId: ");
+  Serial.println(packetId);
+}
+
+void onMqttMessage(const espMqttClientTypes::MessageProperties& properties, const char* topic, const uint8_t* payload, size_t len, size_t index, size_t total) {
+  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(uint16_t packetId) {
+  Serial.println("Publish acknowledged.");
+  Serial.print("  packetId: ");
+  Serial.println(packetId);
+}
+
+void setup() {
+  Serial.begin(115200);
+  Serial.println();
+  Serial.println();
+
+  WiFi.onEvent(WiFiEvent);
+
+  //mqttClient.setInsecure();
+  mqttClient.setCACert(rootCA);
+  mqttClient.setCredentials(MQTT_USER, MQTT_PASS);
+  mqttClient.onConnect(onMqttConnect);
+  mqttClient.onDisconnect(onMqttDisconnect);
+  mqttClient.onSubscribe(onMqttSubscribe);
+  mqttClient.onUnsubscribe(onMqttUnsubscribe);
+  mqttClient.onMessage(onMqttMessage);
+  mqttClient.onPublish(onMqttPublish);
+  mqttClient.setServer(MQTT_HOST, MQTT_PORT);
+  mqttClient.setCleanSession(true);
+
+  connectToWiFi();
+}
+
+void loop() {
+  static uint32_t lastMillis = 0;
+  if (millis() - lastMillis > 5000) {
+    lastMillis = millis();
+    Serial.printf("heap: %u\n", ESP.getFreeHeap());
+  }
+
+  static uint32_t millisDisconnect = 0;
+  if (millis() - millisDisconnect > 60000) {
+    millisDisconnect = millis();
+    mqttClient.disconnect();
+  }
+}