mqtt reserve #2

platformio.ini

@@ -1,7 +1,16 @@
+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; https://docs.platformio.org/page/projectconf.html
 
 [platformio]
-default_envs = esp8266_01_1m
-;=============================================================================================================================================
+default_envs = esp8266
+
 [common_env_data]
 lib_deps_external = 
 	bblanchon/ArduinoJson @5.*
@@ -15,7 +24,7 @@ lib_deps_internal =
 	ESP Async WebServer
 	GyverFilters
 	OneWire
-;=============================================================================================================================================
+
 [env:esp32]
 framework = arduino
 board = esp32dev
@@ -32,15 +41,11 @@ upload_speed = 921600
 monitor_speed = 115200
 board_build.filesystem = littlefs
 extra_scripts = ./tools/littlefsbuilder.py
-;=============================================================================================================================================
+
 [env:esp8266_01_1m]
 framework = arduino
 board = nodemcuv2
-;board = esp01_1m
-;board = esp12e
 board_build.ldscript = eagle.flash.1m512.ld
-;board_build.filesystem.spiffs_blocksize = 4096
-board_build.spiffs_blocksize = 4096
 platform = https://github.com/platformio/platform-espressif8266.git
 lib_deps = 
 	${common_env_data.lib_deps_external}
@@ -53,7 +58,7 @@ monitor_filters = esp8266_exception_decoder
 upload_speed = 921600
 monitor_speed = 115200
 board_build.filesystem = littlefs
-;=============================================================================================================================================
+
 [env:esp8266]
 framework = arduino
 board = nodemcuv2
@@ -70,4 +75,3 @@ monitor_filters = esp8266_exception_decoder
 upload_speed = 921600
 monitor_speed = 115200
 board_build.filesystem = littlefs
-;=============================================================================================================================================

src/MqttClient.cpp

@@ -6,7 +6,8 @@
 #include "Global.h"
 #include "Init.h"
 
-enum MqttBroker {MQTT_PRIMARY, MQTT_RESERVE};
+enum MqttBroker { MQTT_PRIMARY,
+                  MQTT_RESERVE };
 MqttBroker activeBroker = MQTT_PRIMARY;
 
 String mqttPrefix;
@@ -16,10 +17,10 @@ String mqttServer;
 String mqttUser;
 uint16_t mqttPort{0};
 uint16_t reconnectionCounter{0};
-bool primaryExist = false;
+uint16_t fallbackCounter{0};
 
 const String getParamName(const char* param, MqttBroker broker) {
-    return String("mqtt") + param + (broker == MQTT_RESERVE? "2": "");
+    return String("mqtt") + param + (broker == MQTT_RESERVE ? "2" : "");
 }
 
 bool checkBrokerParams(MqttBroker broker) {
@@ -41,10 +42,20 @@ void mqttInit() {
             if (WiFi.status() == WL_CONNECTED) {
                 SerialPrint("I", "WIFI", "OK");
                 if (mqtt.connected()) {
-                    SerialPrint("I", "MQTT", "OK");
-                    setLedStatus(LED_OFF);
-                }
-                else {
+                    if (activeBroker == MQTT_RESERVE) {
+                        // при 20 cекундных интервалах проверки, каждые 100 сек
+                        if (fallbackCounter++ > 5) {
+                            if (checkBrokerParams(MQTT_PRIMARY)) {
+                                activeBroker = MQTT_PRIMARY;
+                                fallbackCounter = 0;
+                                mqttReconnect();
+                            }
+                        }
+                    } else {
+                        SerialPrint("I", "MQTT", "OK");
+                        setLedStatus(LED_OFF);
+                    }
+                } else {
                     SerialPrint("E", "MQTT", "lost connection");
                     if (reconnectionCounter++ > 5) {
                         if (activeBroker == MQTT_PRIMARY) {
@@ -58,8 +69,7 @@ void mqttInit() {
                     }
                     mqttConnect();
                 }
-            }
-            else {
+            } else {
                 SerialPrint("E", "WIFI", "Lost WiFi connection");
                 ts.remove(WIFI_MQTT_CONNECTION_CHECK);
                 startAPMode();
@@ -105,7 +115,7 @@ void mqttSubscribe() {
 }
 
 bool readBrokerParams(MqttBroker broker) {
-    if(!checkBrokerParams(broker)) {
+    if (!checkBrokerParams(broker)) {
         return false;
     }
     mqttServer = jsonReadStr(configSetupJson, getParamName("Server", broker));
@@ -117,7 +127,7 @@ bool readBrokerParams(MqttBroker broker) {
 }
 
 boolean mqttConnect() {
-    SerialPrint("I", "MQTT", String("use ") + (activeBroker == MQTT_PRIMARY? "primary": "reserve"));    
+    SerialPrint("I", "MQTT", String("use ") + (activeBroker == MQTT_PRIMARY ? "primary" : "reserve"));
     if (!checkBrokerParams(activeBroker)) {
         SerialPrint("E", "MQTT", "empty broker address");
         return false;
@@ -137,8 +147,7 @@ boolean mqttConnect() {
             setLedStatus(LED_OFF);
             mqttSubscribe();
             res = true;
-        }
-        else {
+        } else {
             SerialPrint("E", "MQTT", "could't connect, retry in " + String(MQTT_RECONNECT_INTERVAL / 1000) + "s");
             setLedStatus(LED_FAST);
         }
@@ -166,7 +175,6 @@ void mqttCallback(char* topic, uint8_t* payload, size_t length) {
     }
 
     else if (topicStr.indexOf("control") != -1) {
-
         String key = selectFromMarkerToMarker(topicStr, "/", 3);
 
         String order;
@@ -326,38 +334,38 @@ void publishState() {
 
 const String getStateStr() {
     switch (mqtt.state()) {
-    case -4:
-        return F("no respond");
-        break;
-    case -3:
-        return F("connection was broken");
-        break;
-    case -2:
-        return F("connection failed");
-        break;
-    case -1:
-        return F("client disconnected");
-        break;
-    case 0:
-        return F("client connected");
-        break;
-    case 1:
-        return F("doesn't support the requested version");
-        break;
-    case 2:
-        return F("rejected the client identifier");
-        break;
-    case 3:
-        return F("unable to accept the connection");
-        break;
-    case 4:
-        return F("wrong username/password");
-        break;
-    case 5:
-        return F("not authorized to connect");
-        break;
-    default:
-        return F("unspecified");
-        break;
+        case -4:
+            return F("no respond");
+            break;
+        case -3:
+            return F("connection was broken");
+            break;
+        case -2:
+            return F("connection failed");
+            break;
+        case -1:
+            return F("client disconnected");
+            break;
+        case 0:
+            return F("client connected");
+            break;
+        case 1:
+            return F("doesn't support the requested version");
+            break;
+        case 2:
+            return F("rejected the client identifier");
+            break;
+        case 3:
+            return F("unable to accept the connection");
+            break;
+        case 4:
+            return F("wrong username/password");
+            break;
+        case 5:
+            return F("not authorized to connect");
+            break;
+        default:
+            return F("unspecified");
+            break;
     }
 }