Ahtx0 detections (#695)

* Detect when sensor isn't available or read fails

* Matching code guidelines

Co-authored-by: Jonathan Michael Wells <jonathan-wells@oist.jp>

main/ZsensorAHTx0.ino

@@ -56,9 +56,13 @@ void setupZsensorAHTx0() {
 
 #  if defined(ESP32)
   Wire.begin(AHT_I2C_SDA, AHT_I2C_SCL);
-  ahtSensor.begin(&Wire);
+  if (!ahtSensor.begin(&Wire)) {
+    Log.error(F("Failed to initialize AHTx0 sensor!" CR));
+  }
 #  else
-  ahtSensor.begin();
+  if (!ahtSensor.begin()) {
+    Log.error(F("Failed to initialize AHTx0 sensor!" CR));
+  }
 #  endif
 }
 
@@ -71,9 +75,8 @@ void MeasureAHTTempHum() {
     static float persisted_aht_hum;
 
     sensors_event_t ahtTempC, ahtHum;
-    ahtSensor.getEvent(&ahtHum, &ahtTempC); // get sensor data
-
-    if (ahtTempC.temperature >= 998 || ahtHum.relative_humidity >= 998) {
+    if (!ahtSensor.getEvent(&ahtHum, &ahtTempC)) // get sensor data
+    {
       Log.error(F("Failed to read from sensor AHTx0!" CR));
       return;
     }
@@ -101,8 +104,9 @@ void MeasureAHTTempHum() {
         Log.notice(F("Same Humidity. Don't send it" CR));
       }
 
-      if (AHTx0data.size() > 0)
+      if (AHTx0data.size() > 0) {
         pub(AHTTOPIC, AHTx0data);
+      }
     }
     persisted_aht_tempc = ahtTempC.temperature;
     persisted_aht_hum = ahtHum.relative_humidity;