Improve SCD30 readout flow

src/main.cpp

@@ -9,18 +9,24 @@ void initSCD30(void)
 {
 	// Try to initialize!
 	if (!scd30.begin()) {
-		Serial.println("Failed to find SCD30 chip");
+		Serial.println("scd30: Failed to find SCD30 chip");
 		while (1) { delay(10); }
 	}
-	Serial.println("SCD30 Found!");
+	Serial.println("scd30: SCD30 Found!");
 
-	if (!scd30.setMeasurementInterval(2)){
-		Serial.println("Failed to set measurement interval");
+	scd30.reset();
+
+	if (!scd30.setMeasurementInterval(15)){ // seconds
+		Serial.println("scd30: Failed to set measurement interval");
 		while(1) {delay(10);}
 	}
-	Serial.print("Measurement Interval: "); 
+	Serial.print("scd30: Measurement Interval: "); 
 	Serial.print(scd30.getMeasurementInterval()); 
 	Serial.println(" seconds");
+
+	if(!scd30.startContinuousMeasurement()) {
+		Serial.println("scd30: Could not start continuous measurement");
+	}
 }
 
 
@@ -34,13 +40,23 @@ void setup(void)
 
 void loop(void)
 {
-	if (!scd30.read()) {
-		Serial.println("Error reading sensor data");
-		return;
+	if(scd30.dataReady()) {
+		if (!scd30.read()) {
+			Serial.println("Error reading sensor data");
+			return;
+		}
+
+		Serial.print("CO2: ");
+		Serial.print(scd30.CO2, 3);
+		Serial.println(" ppm");
+		Serial.print("Temperature: ");
+		Serial.print(scd30.temperature, 3);
+		Serial.println(" °C");
+		Serial.print("Rel. humidity: ");
+		Serial.print(scd30.relative_humidity, 2);
+		Serial.println(" %");
+		Serial.println("");
 	}
 
-	Serial.print("CO2: ");
-	Serial.print(scd30.CO2, 3);
-	Serial.println(" ppm");
-	Serial.println("");
+	delay(1000);
 }