Lean on Arduino log library instead of custom logging methods (#546)

* Lean on Arduino log library instead of custom logging methods

main/ZsensorADC.ino

@@ -37,6 +37,11 @@ ADC_MODE(ADC_TOUT);
 //Time used to wait for an interval before resending adc value
 unsigned long timeadc = 0;
 
+void setupADC()
+{
+  Log.notice(F("Reading ADC on pin: %d" CR), ADC_PIN);
+}
+
 void MeasureADC()
 {
   if (millis() > (timeadc + TimeBetweenReadingADC))
@@ -49,13 +54,13 @@ void MeasureADC()
     int val = analogRead(ADC_PIN);
     if (isnan(val))
     {
-      trc(F("Failed to read from ADC !"));
+      Log.error(F("Failed to read from ADC !" CR));
     }
     else
     {
       if (val >= persistedadc + ThresholdReadingADC || val <= persistedadc - ThresholdReadingADC)
       {
-        trc(F("Creating ADC buffer"));
+        Log.trace(F("Creating ADC buffer" CR));
         const int JSON_MSG_CALC_BUFFER = JSON_OBJECT_SIZE(1);
         StaticJsonBuffer<JSON_MSG_CALC_BUFFER> jsonBuffer;
         JsonObject &ADCdata = jsonBuffer.createObject();