From 009cddbfdb15c214fd37fe7045204f0df47351c2 Mon Sep 17 00:00:00 2001
From: gregor herrmann <gregor@toastfreeware.priv.at>
Date: Thu, 22 Oct 2020 20:49:09 +0200
Subject: [PATCH] Output time before measurements.

millis() aka time since program start.
And raise delay to a second.
---
 airingbutler.ino | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/airingbutler.ino b/airingbutler.ino
index 8ea9d41..b8ba6f5 100644
--- a/airingbutler.ino
+++ b/airingbutler.ino
@@ -6,24 +6,28 @@ const int tx_pin = 3; // connect to RX on MHZ19
 
 
 MHZ19 mhz19 = MHZ19(rx_pin,tx_pin);
+unsigned long time;
 
 
 void setup()
 {
     Serial.begin(115200);
-    Serial.println("CO2,temp");
+    Serial.println("Time,CO2,Temp");
     mhz19.begin(rx_pin, tx_pin);
 }
 
 
 void loop()
 {
+    time = millis();
     measurement_t m = mhz19.getMeasurement();
 
+    Serial.print(time);
+    Serial.print(",");
     Serial.print(m.co2_ppm);
     Serial.print(",");
     Serial.println(m.temperature);
     
-    delay(500);
+    delay(1000);
 }
 
-- 
2.39.5