136 lines
3.8 KiB
C++
136 lines
3.8 KiB
C++
/*
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This example uses FreeRTOS softwaretimers as there is no built-in Ticker library
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*/
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#include <WiFi.h>
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extern "C" {
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#include "freertos/FreeRTOS.h"
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#include "freertos/timers.h"
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}
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#include <AsyncMqttClient.h>
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#define WIFI_SSID "yourSSID"
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#define WIFI_PASSWORD "yourpass"
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#define MQTT_HOST IPAddress(192, 168, 1, 10)
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#define MQTT_PORT 1883
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AsyncMqttClient mqttClient;
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TimerHandle_t mqttReconnectTimer;
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TimerHandle_t wifiReconnectTimer;
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void connectToWifi() {
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Serial.println("Connecting to Wi-Fi...");
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WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
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}
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void connectToMqtt() {
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Serial.println("Connecting to MQTT...");
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mqttClient.connect();
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}
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void WiFiEvent(WiFiEvent_t event) {
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Serial.printf("[WiFi-event] event: %d\n", event);
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switch(event) {
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case SYSTEM_EVENT_STA_GOT_IP:
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Serial.println("WiFi connected");
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Serial.println("IP address: ");
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Serial.println(WiFi.localIP());
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connectToMqtt();
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break;
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case SYSTEM_EVENT_STA_DISCONNECTED:
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Serial.println("WiFi lost connection");
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xTimerStop(mqttReconnectTimer, 0); // ensure we don't reconnect to MQTT while reconnecting to Wi-Fi
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xTimerStart(wifiReconnectTimer, 0);
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break;
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}
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}
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void onMqttConnect(bool sessionPresent) {
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Serial.println("Connected to MQTT.");
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Serial.print("Session present: ");
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Serial.println(sessionPresent);
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uint16_t packetIdSub = mqttClient.subscribe("test/lol", 2);
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Serial.print("Subscribing at QoS 2, packetId: ");
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Serial.println(packetIdSub);
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mqttClient.publish("test/lol", 0, true, "test 1");
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Serial.println("Publishing at QoS 0");
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uint16_t packetIdPub1 = mqttClient.publish("test/lol", 1, true, "test 2");
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Serial.print("Publishing at QoS 1, packetId: ");
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Serial.println(packetIdPub1);
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uint16_t packetIdPub2 = mqttClient.publish("test/lol", 2, true, "test 3");
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Serial.print("Publishing at QoS 2, packetId: ");
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Serial.println(packetIdPub2);
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}
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void onMqttDisconnect(AsyncMqttClientDisconnectReason reason) {
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Serial.println("Disconnected from MQTT.");
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if (WiFi.isConnected()) {
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xTimerStart(mqttReconnectTimer, 0);
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}
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}
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void onMqttSubscribe(uint16_t packetId, uint8_t qos) {
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Serial.println("Subscribe acknowledged.");
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Serial.print(" packetId: ");
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Serial.println(packetId);
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Serial.print(" qos: ");
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Serial.println(qos);
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}
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void onMqttUnsubscribe(uint16_t packetId) {
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Serial.println("Unsubscribe acknowledged.");
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Serial.print(" packetId: ");
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Serial.println(packetId);
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}
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void onMqttMessage(char* topic, char* payload, AsyncMqttClientMessageProperties properties, size_t len, size_t index, size_t total) {
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Serial.println("Publish received.");
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Serial.print(" topic: ");
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Serial.println(topic);
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Serial.print(" qos: ");
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Serial.println(properties.qos);
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Serial.print(" dup: ");
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Serial.println(properties.dup);
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Serial.print(" retain: ");
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Serial.println(properties.retain);
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Serial.print(" len: ");
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Serial.println(len);
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Serial.print(" index: ");
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Serial.println(index);
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Serial.print(" total: ");
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Serial.println(total);
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}
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void onMqttPublish(uint16_t packetId) {
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Serial.println("Publish acknowledged.");
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Serial.print(" packetId: ");
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Serial.println(packetId);
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}
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void setup() {
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Serial.begin(115200);
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Serial.println();
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Serial.println();
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mqttReconnectTimer = xTimerCreate("mqttTimer", pdMS_TO_TICKS(2000), pdFALSE, (void*)0, reinterpret_cast<TimerCallbackFunction_t>(connectToMqtt));
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wifiReconnectTimer = xTimerCreate("wifiTimer", pdMS_TO_TICKS(2000), pdFALSE, (void*)0, reinterpret_cast<TimerCallbackFunction_t>(connectToWifi));
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WiFi.onEvent(WiFiEvent);
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mqttClient.onConnect(onMqttConnect);
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mqttClient.onDisconnect(onMqttDisconnect);
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mqttClient.onSubscribe(onMqttSubscribe);
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mqttClient.onUnsubscribe(onMqttUnsubscribe);
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mqttClient.onMessage(onMqttMessage);
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mqttClient.onPublish(onMqttPublish);
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mqttClient.setServer(MQTT_HOST, MQTT_PORT);
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connectToWifi();
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}
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void loop() {
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}
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