sometimes strange partial response are given by serial

Avoid publishing them

ZgatewayBT.ino

@@ -28,6 +28,7 @@ Thanks to wolass https://github.com/wolass for suggesting me HM 10 and dinosd ht
 #define STRING_MSG "OK+DISC:"
 #define QUESTION_MSG "AT+DISI?"
 #define RESPONSE_MSG "OK+DISIS"
+#define RESP_END_MSG "OK+DISCE"
 #define SETUP_MSG "OK+RESET"
 #define TimeBtw_Read 10000
 
@@ -47,16 +48,17 @@ void setupBT() {
 
 boolean BTtoMQTT() {
   while (softserial.available() > 0) {
+    String discResult = softserial.readString();
+    if (discResult.indexOf(STRING_MSG)>=0){
+      discResult.replace(RESPONSE_MSG,"");
+      discResult.replace(RESP_END_MSG,"");
+      float device_number = discResult.length()/78.0;
+      if (device_number == (int)device_number){ // to avoid publishing partial values we detect if the serial data as been fully read = a multiple of 78
+        trc(F("Sending BT data to MQTT"));
         #ifdef ESP8266
           yield();
         #endif
-
-    String discResult = softserial.readString();
-    if (discResult.indexOf(STRING_MSG)>=0){
-      trc(F("Sending BT data to MQTT"));
-      discResult.replace(RESPONSE_MSG,"");
-      int device_number = discResult.length()/78;     
-      for (int i=0;i<device_number;i++){
+        for (int i=0;i<(int)device_number;i++){
              String onedevice = discResult.substring(0,78);
              onedevice.replace(STRING_MSG,"");
              /*String company = onedevice.substring(0,8);
@@ -74,6 +76,7 @@ boolean BTtoMQTT() {
           }
           return true;
         }
+      }
     if (discResult.indexOf(SETUP_MSG)>=0)
     {
       trc(F("Connection OK to HM-10"));