fix broken json mqtt message

Author: softwarecrash

platformio.ini

@@ -13,22 +13,19 @@ platform = espressif8266@4.2.1
 framework = arduino
 monitor_speed = 115200
 monitor_filters = esp8266_exception_decoder, default, time, printable, colorize
-
 custom_prog_version = 2.3.0A1
-
 build_flags = 
-			-DVERSION=${this.custom_prog_version}
-			-DPIO_SRC_NAM="EPEver2MQTT"
-			-DESP8266 -DATOMIC_FS_UPDATE
+	-DVERSION=${this.custom_prog_version}
+	-DPIO_SRC_NAM="EPEver2MQTT"
+	-DESP8266 -DATOMIC_FS_UPDATE
 extra_scripts = pre:tools/mini_html.py
-				pre:tools/pre_compile.py
-				post:tools/post_compile.py
-
+	pre:tools/pre_compile.py
+	post:tools/post_compile.py
 lib_extra_dirs = 
 	/lib
 lib_deps = 
-	knolleary/PubSubClient @ ^2.8
-	bblanchon/ArduinoJson @ ^6.21.3
+	knolleary/PubSubClient@^2.8
+	bblanchon/ArduinoJson@^6.21.3
 	ottowinter/ESPAsyncTCP-esphome@^1.2.3
 	ottowinter/ESPAsyncWebServer-esphome@^3.0.0
 	alanswx/ESPAsyncWiFiManager@^0.31
@@ -37,14 +34,16 @@ lib_deps =
 	paulstoffregen/OneWire@^2.3.7
 	milesburton/DallasTemperature@^3.11.0
 
+	bblanchon/StreamUtils@^1.8.0
+
 [env:d1_mini]
 board = d1_mini
 build_flags = ${env.build_flags}
-board_build.ldscript = eagle.flash.4m.ld	; 4MB (FS:4MB OTA:~3600KB)
-upload_speed = 921600						; faster upload to wemos d1 mini
+board_build.ldscript = eagle.flash.4m.ld
+upload_speed = 921600
 
 [env:esp01_1m]
 board = esp01_1m
 build_flags = ${env.build_flags}
-board_build.ldscript = eagle.flash.1m.ld	
-upload_speed = 115200
+board_build.ldscript = eagle.flash.1m.ld
+upload_speed = 115200

src/main.cpp

@@ -16,6 +16,9 @@
 #include <WebSerialLite.h>
 #include <OneWire.h>
 #include <DallasTemperature.h>
+
+#include <StreamUtils.h>
+
 #include "Settings.h"      //settings functions
 #include "html.h"          //the HTML content
 #include "htmlProzessor.h" // The html Prozessor
@@ -53,6 +56,8 @@ UnixTime uTime(3);
 DynamicJsonDocument liveJson(JSON_BUFFER);
 OneWire oneWire(TEMPSENS_PIN);
 DallasTemperature tempSens(&oneWire);
+
+
 #include "status-LED.h"
 ADC_MODE(ADC_VCC);
 //----------------------------------------------------------------------
@@ -767,6 +772,7 @@ bool getJsonData(int invNum)
   liveJson["DEVICE_FREE_HEAP"] = ESP.getFreeHeap();
   liveJson["DEVICE_FREE_JSON"] = (JSON_BUFFER - liveJson.memoryUsage());
   liveJson["ESP_VCC"] = (ESP.getVcc() / 1000.0) + 0.3;
+  liveJson["Runtime"] = millis() / 1000;
   liveJson["Wifi_RSSI"] = WiFi.RSSI();
   liveJson["sw_version"] = SOFTWARE_VERSION;
 
@@ -857,9 +863,20 @@ bool sendtoMQTT()
   }
   else
   {
-    mqttclient.beginPublish((topic + String("/DATA")).c_str(), measureJson(liveJson), false);
+/*     mqttclient.beginPublish((topic + String("/DATA")).c_str(), measureJson(liveJson), false);
     serializeJson(liveJson, mqttclient);
-    mqttclient.endPublish();
+    mqttclient.endPublish(); */
+
+
+
+
+
+mqttclient.beginPublish((topic + String("/DATA")).c_str(), measureJson(liveJson), false);
+BufferingPrint bufferedClient(mqttclient, 32);
+serializeJson(liveJson, bufferedClient);
+bufferedClient.flush();
+mqttclient.endPublish();
+
   }
   return true;
 }