Better sensors (#154)

* globally expose repeat functionality as advanced function

* implement repeated sends for Arduino based boards

* use String class instead of C-style arrays to benefit from dynamic allocation and avoid buffer overflows. Try to improve stability of BME280.

* replace sprintf with String class to avoid buffer overruns by dynamic allocation

* fix caps on variable

* re-add TSL2561 code that was accidentally removed

OpenMQTTGateway.ino

@@ -241,6 +241,9 @@ void setup()
   #ifdef ZsensorBH1750
     setupZsensorBH1750();
   #endif
+  #ifdef ZsensorTSL2561
+    setupZsensorTSL2561();
+  #endif
   #ifdef ZgatewayIR
     setupIR();
   #endif
@@ -373,6 +376,9 @@ void loop()
     #ifdef ZsensorBH1750
       MeasureLightIntensity(); //Addon to measure Light Intensity with a BH1750
     #endif
+    #ifdef ZsensorTSL2561
+      MeasureLightIntensityTSL2561();
+    #endif
     #ifdef ZsensorDHT
       MeasureTempAndHum(); //Addon to measure the temperature with a DHT
     #endif

ZsensorADC.ino

@@ -28,7 +28,7 @@
 */
 #ifdef ZsensorADC
 
-#if defined(ESP8266) || defined(ESP32)
+#if defined(ESP8266)
   ADC_MODE(ADC_TOUT);
 #endif
 
@@ -47,11 +47,9 @@ void MeasureADC(){
       trc(F("Failed to read from ADC !"));
     }else{
       if(val  >= persistedadc + ThresholdReadingADC || val  <= persistedadc - ThresholdReadingADC){
-        char value[4];
-        sprintf(value, "%d", val);
         trc(F("Sending analog value to MQTT"));
         trc(String(val));
-        client.publish(ADC,value);
+        client.publish(ADC,String(val).c_str());
         persistedadc = val;
        }
     }

ZsensorBH1750.ino

@@ -94,33 +94,27 @@ void MeasureLightIntensity()
 
       // Generate Lux
       if(Lux != persistedll || bh1750_always){
-        char lux[7];
-        sprintf(lux,"%u",Lux);
         trc(F("Sending Lux to MQTT"));
-        trc(String(lux));
-        client.publish(LUX,lux);
+        trc(String(Lux));
+        client.publish(LUX,String(Lux).c_str());
        }else{
         trc(F("Same lux don't send it"));
        }
 
       // Generate FtCd
       if(FtCd != persistedlf || bh1750_always){
-        char ftcd[7];
-        dtostrf(FtCd,4,2,ftcd);
         trc(F("Sending FtCd to MQTT"));
-        trc(String(ftcd));
-        client.publish(FTCD,ftcd);
+        trc(String(FtCd));
+        client.publish(FTCD,String(FtCd).c_str());
       }else{
         trc(F("Same ftcd don't send it"));
       }
 
       // Generate Watts/m2
       if(Wattsm2 != persistedlw || bh1750_always){
-        char wattsm2[7];
-        dtostrf(Wattsm2,6,4,wattsm2);
         trc(F("Sending Wattsm2 to MQTT"));
-        trc(String(wattsm2));
-        client.publish(WATTSM2,wattsm2);
+        trc(String(Wattsm2));
+        client.publish(WATTSM2,String(Wattsm2).c_str());
       }else{
         trc(F("Same wattsm2 don't send it"));
       }    

ZsensorBME280.ino

@@ -70,7 +70,7 @@ void setupZsensorBME280()
   //  5, 1000ms
   //  6, 10ms
   //  7, 20ms
-  mySensor.settings.tStandby = 0;
+  mySensor.settings.tStandby = 1;
   
   // Filter can be off or number of FIR coefficients - Values:
   // ---------------------------------------------------------
@@ -79,7 +79,7 @@ void setupZsensorBME280()
   //  2, coefficients = 4
   //  3, coefficients = 8
   //  4, coefficients = 16
-  mySensor.settings.filter = 0;
+  mySensor.settings.filter = 4;
   
   // tempOverSample - Values:
   // ------------------------
@@ -129,66 +129,54 @@ void MeasureTempHumAndPressure()
     }else{
       // Generate Temperature in degrees C
       if(BmeTempC != persisted_bme_tempc || bme280_always){
-        char bmetempc[7];
-        dtostrf(BmeTempC,4,2,bmetempc);
         trc(F("Sending Degrees C to MQTT"));
-        trc(String(bmetempc));
-        client.publish(TEMPBMEC,bmetempc);
+        trc(String(BmeTempC));
+        client.publish(TEMPBMEC, String(BmeTempC).c_str());
       }else{
         trc(F("Same Degrees C don't send it"));
       }
       
       // Generate Temperature in degrees F
       if(BmeTempF != persisted_bme_tempf || bme280_always){
-        char bmetempf[7];
-        dtostrf(BmeTempF,4,2,bmetempf);
         trc(F("Sending Degrees F to MQTT"));
-        trc(String(bmetempf));
-        client.publish(TEMPBMEF,bmetempf);
+        trc(String(BmeTempF));
+        client.publish(TEMPBMEF,String(BmeTempF).c_str());
       }else{
         trc(F("Same Degrees F don't send it"));
       }
       
       // Generate Humidity in percent
       if(BmeHum != persisted_bme_hum || bme280_always){
-        char bmehum[7];
-        dtostrf(BmeHum,4,2,bmehum);
         trc(F("Sending Humidity to MQTT"));
-        trc(String(bmehum));
-        client.publish(HUMBME,bmehum);
+        trc(String(BmeHum));
+        client.publish(HUMBME, String(BmeHum).c_str());
       }else{
         trc(F("Same Humidity don't send it"));
       }
 
       // Generate Pressure in Pa
       if(BmePa != persisted_bme_pa || bme280_always){
-        char bmepa[7];
-        dtostrf(BmePa,4,2,bmepa);
         trc(F("Sending Pressure to MQTT"));
-        trc(String(bmepa));
-        client.publish(PRESSBME,bmepa);
+        trc(String(BmePa));
+        client.publish(PRESSBME, String(BmePa).c_str());
       }else{
         trc(F("Same Pressure don't send it"));
       }
 
       // Generate Altitude in Meter
       if(BmeAltiM != persisted_bme_altim || bme280_always){
-        char bmealtim[7];
-        dtostrf(BmeAltiM,4,2,bmealtim);
         trc(F("Sending Altitude Meter to MQTT"));
-        trc(String(bmealtim));
-        client.publish(ALTIBMEM,bmealtim);
+        trc(String(BmeAltiM));
+        client.publish(ALTIBMEM, String(BmeAltiM).c_str());
       }else{
         trc(F("Same Altitude Meter don't send it"));
       }
 
       // Generate Altitude in Feet
       if(BmeAltiFt != persisted_bme_altift || bme280_always){
-        char bmealtift[7];
-        dtostrf(BmeAltiFt,4,2,bmealtift);
         trc(F("Sending Altitude Feet to MQTT"));
-        trc(String(bmealtift));
-        client.publish(ALTIBMEFT,bmealtift);
+        trc(String(BmeAltiFt));
+        client.publish(ALTIBMEFT, String(BmeAltiFt).c_str());
       }else{
         trc(F("Same Altitude Feet don't send it"));
       }

ZsensorDHT.ino

@@ -49,20 +49,16 @@ void MeasureTempAndHum(){
       trc(F("Failed to read from DHT sensor!"));
     }else{
       if(h != persistedh || dht_always){
-        char hum[6];
-        dtostrf(h,4,2,hum);
         trc(F("Sending Hum to MQTT"));
-        trc(String(hum));
-        client.publish(HUM1,hum);
+        trc(String(h));
+        client.publish(HUM1,String(h).c_str());
        }else{
         trc(F("Same hum don't send it"));
        }
       if(t != persistedt || dht_always){
-        char temp[6];
-        dtostrf(t,4,2,temp);
         trc(F("Sending Temp to MQTT"));
-        trc(String(temp));
-        client.publish(TEMP1,temp);
+        trc(String(t));
+        client.publish(TEMP1, String(t).c_str());
       }else{
         trc(F("Same temp don't send it"));
       }

ZsensorTSL2561.ino

@@ -98,17 +98,11 @@ void MeasureLightIntensityTSL2561()
       {
 	if (persisted_lux != event.light || tsl2561_always ) {
 	  persisted_lux = event.light;
-	  char lux[7];
-	  char ftcd[7];
-	  char wattsm2[7];
-	  sprintf(lux, "%s", String(event.light).c_str());
-	  sprintf(ftcd, "%s", String(event.light/10.764).c_str());
-	  sprintf(wattsm2, "%s", String(event.light/683.0).c_str());
 	  	  
 	  trc("Sending Light Intensity in Lux to MQTT " + String(event.light) + " lux");
-	  client.publish(LUX, lux);
-	  client.publish(FTCD, ftcd);
-	  client.publish(WATTSM2, wattsm2);
+	  client.publish(LUX, String(event.light).c_str());
+	  client.publish(FTCD, String((event.light)/10.764).c_str());
+	  client.publish(WATTSM2, String((event.light)/683.0).c_str());
 	} else {
 	  trc("Same lux value, do not send");
 	}