d2322083aa
WiFi sometimes fails and cannot reconnect without a sleep cycle. To fix this, we can fully disconnect from the WiFi connection before our reconnection attempt
89 lines
2.7 KiB
C++
89 lines
2.7 KiB
C++
#include <PubSubClient.h>
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#include <lvgl.h>
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#include "hardware/mqtt.h"
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#include "gui_general_and_keys/guiBase.h"
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#include "secrets.h"
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#include "commandHandler.h"
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#ifdef ENABLE_WIFI_AND_MQTT
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WiFiClient espClient;
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PubSubClient mqttClient(espClient);
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// WiFi status event
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void WiFiEvent(WiFiEvent_t event){
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//Serial.printf("[WiFi-event] event: %d\r\n", event);
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if(event == ARDUINO_EVENT_WIFI_STA_GOT_IP){
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// connection to MQTT server will be done in checkMQTTconnection()
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// mqttClient.setServer(MQTT_SERVER, 1883); // MQTT initialization
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// mqttClient.connect("OMOTE"); // Connect using a client id
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}
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// Set status bar icon based on WiFi status
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if (event == ARDUINO_EVENT_WIFI_STA_GOT_IP || event == ARDUINO_EVENT_WIFI_STA_GOT_IP6) {
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if (WifiLabel != NULL) {lv_label_set_text(WifiLabel, LV_SYMBOL_WIFI);}
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} else if (event == ARDUINO_EVENT_WIFI_STA_DISCONNECTED) {
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if (WifiLabel != NULL) {lv_label_set_text(WifiLabel, "");}
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// automatically try to reconnect
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Serial.printf("WiFi got disconnected. Will try to reconnect.\r\n");
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WiFi.disconnect();
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WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
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} else {
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// e.g. ARDUINO_EVENT_WIFI_STA_CONNECTED or many others
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// connected is not enough, will wait for IP
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if (WifiLabel != NULL) {lv_label_set_text(WifiLabel, "");}
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}
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}
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void init_mqtt(void) {
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// Setup WiFi
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WiFi.setHostname("OMOTE"); //define hostname
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WiFi.onEvent(WiFiEvent);
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WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
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WiFi.setSleep(true);
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}
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bool checkMQTTconnection() {
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if (WiFi.isConnected()) {
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if (mqttClient.connected()) {
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return true;
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} else {
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// try to connect to mqtt server
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mqttClient.setServer(MQTT_SERVER, MQTT_SERVER_PORT); // MQTT initialization
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if (mqttClient.connect(MQTT_CLIENTNAME, MQTT_USER, MQTT_PASS)) {
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Serial.printf(" Successfully connected to MQTT broker\r\n");
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} else {
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Serial.printf(" MQTT connection failed (but WiFi is available). Will try later ...\r\n");
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}
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return mqttClient.connected();
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}
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} else {
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Serial.printf(" No connection to MQTT server, because WiFi ist not connected.\r\n");
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return false;
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}
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}
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bool publishMQTTMessage(const char *topic, const char *payload){
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if (checkMQTTconnection()) {
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// Serial.printf("Sending mqtt payload to topic \"%s\": %s\r\n", topic, payload);
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if (mqttClient.publish(topic, payload)) {
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// Serial.printf("Publish ok\r\n");
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return true;
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}
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else {
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Serial.printf("Publish failed\r\n");
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}
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} else {
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Serial.printf(" Cannot publish mqtt message, because checkMQTTconnection failed (WiFi or mqtt is not connected)\r\n");
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}
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return false;
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}
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#endif
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