ArduinoJson v7 support

src/fdrs_gateway_filesystem.h

@@ -100,7 +100,7 @@ void sendLog()
   DBG("Logging to buffer");
   for (int i = 0; i < ln; i++)
   {
-    StaticJsonDocument<96> doc;
+    JsonDocument doc;
     JsonObject doc_0 = doc.createNestedObject();
     doc_0["id"] = theData[i].id;
     doc_0["type"] = theData[i].t;

src/fdrs_gateway_mqtt.h

@@ -119,7 +119,7 @@ void mqtt_callback(char *topic, byte *message, unsigned int length)
     {
         incomingString += (char)message[i];
     }
-    StaticJsonDocument<2048> doc;
+    JsonDocument doc;
     DeserializationError error = deserializeJson(doc, incomingString);
     if (error)
     { // Test if parsing succeeds.
@@ -180,7 +180,7 @@ void mqtt_publish(const char *payload)
 void sendMQTT()
 {
     DBG("Sending MQTT.");
-    DynamicJsonDocument doc(24576);
+    JsonDocument doc;
     for (int i = 0; i < ln; i++)
     {
         doc[i]["id"] = theData[i].id;

src/fdrs_gateway_serial.h

@@ -32,7 +32,7 @@ void getSerial() {
   else if (Serial.available()){
    incomingString =  Serial.readStringUntil('\n');
   }
-  DynamicJsonDocument doc(24576);
+  JsonDocument doc;
   DeserializationError error = deserializeJson(doc, incomingString);
   if (error) {    // Test if parsing succeeds.
     //    DBG("json parse err");
@@ -55,7 +55,7 @@ void getSerial() {
 
 void sendSerial() {
   DBG("Sending Serial.");
-  DynamicJsonDocument doc(24576);
+  JsonDocument doc;
   for (int i = 0; i < ln; i++) {
     doc[i]["id"]   = theData[i].id;
     doc[i]["type"] = theData[i].t;