1 files changed, 62 insertions, 0 deletions
diff --git a/co2.h b/co2.h
new file mode 100644
index 0000000..ac963f4
--- /dev/null
+++ b/co2.h
@@ -0,0 +1,62 @@
+#pragma once
+
+#include <Arduino.h>
+
+#include <SensirionI2CScd4x.h>
+#include <Wire.h>
+
+#include "data.h"
+
+class CO2 {
+private:
+  SensirionI2CScd4x scd4x;
+
+public:
+  CO2() : scd4x() {}
+
+  void start() {
+    uint16_t error;
+    char errorMessage[256];
+
+    scd4x.begin(Wire);
+
+    // stop potentially previously started measurement
+    error = scd4x.stopPeriodicMeasurement();
+    if (error) {
+        Serial.print("CO2 stopPeriodicMeasurement() error: ");
+        errorToString(error, errorMessage, 256);
+        Serial.println(errorMessage);
+    }
+
+    error = scd4x.setAutomaticSelfCalibration(1);
+    if (error) {
+        Serial.print("CO2 setAutomaticSelfCalibration() error: ");
+        errorToString(error, errorMessage, 256);
+        Serial.println(errorMessage);
+    }
+    
+    // Start Measurement
+    error = scd4x.startPeriodicMeasurement();
+    if (error) {
+        Serial.print("CO2 startPeriodicMeasurement() error: ");
+        errorToString(error, errorMessage, 256);
+        Serial.println(errorMessage);
+    }
+  }
+
+  bool dataReady() {
+    return true;
+  }
+  
+  void read(SensorData *data) {
+    uint16_t error;
+    char errorMessage[256];
+
+    error = scd4x.readMeasurement(data->co2, data->temperature, data->humidity);
+    if (error) {
+        Serial.print("CO2 readMeasurement() error: ");
+        errorToString(error, errorMessage, 256);
+        Serial.println(errorMessage);
+    }
+  }
+};