Pass by reference

csv_writer.cpp

@@ -134,15 +134,11 @@ namespace csv_writer {
     return csv_file;
   }
 
-  void logIfTimeHasCome(const String &timeStamp, int16_t co2, float temp, float hum) {
-    unsigned long now = seconds();
-    //TODO: Write average since last CSV write?
-    if (now - last_written_at > config::csv_interval) {
-      last_written_at = now;
+  void log(const String &timeStamp, const int16_t &co2, const float &temperature, const float &humidity) {
     LedEffects::onBoardLEDOn();
     File csv_file = openOrCreate();
     char csv_line[42];
-      snprintf(csv_line, sizeof(csv_line), "%s;%d;%.1f;%.1f\r\n", timeStamp.c_str(), co2, temp, hum);
+    snprintf(csv_line, sizeof(csv_line), "%s;%d;%.1f;%.1f\r\n", timeStamp.c_str(), co2, temperature, humidity);
     if (csv_file) {
       size_t written_bytes = csv_file.print(csv_line);
       csv_file.close();
@@ -161,5 +157,13 @@ namespace csv_writer {
     }
     LedEffects::onBoardLEDOff();
   }
+
+  void logIfTimeHasCome(const String &timeStamp, const int16_t &co2, const float &temperature, const float &humidity) {
+    unsigned long now = seconds();
+    //TODO: Write average since last CSV write?
+    if (now - last_written_at > config::csv_interval) {
+      last_written_at = now;
+      log(timeStamp, co2, temperature, humidity);
+    }
   }
 }

csv_writer.h

@@ -19,7 +19,7 @@ namespace config {
 namespace csv_writer {
   extern String last_successful_write;
   void initialize();
-  void logIfTimeHasCome(const String &timeStamp, int16_t co2, float temp, float hum);
+  void logIfTimeHasCome(const String &timeStamp, const int16_t &co2, const float &temperature, const float &humidity);
   int getAvailableSpace();
   extern const String filename;
 }