X-Git-Url: https://git.toastfreeware.priv.at/toast/airingbutler.git/blobdiff_plain/b4d3ce956ec69c81f240e37aa4f381533c4b6c73..e9898a8dd32afa327d954ebe4adbeb9c856f3b23:/airingbutler.ino

diff --git a/airingbutler.ino b/airingbutler.ino
index c05a737..c93f4ba 100644
--- a/airingbutler.ino
+++ b/airingbutler.ino
@@ -11,20 +11,11 @@ const int led_red_pin    = 6;
 
 const int buzzer_pin = 13;
 
-/*
-const int lcd_pin = 7;
-const int lcd_pin = 8;
-const int lcd_pin = 9;
-const int lcd_pin = 10;
-const int lcd_pin = 11;
-const int lcd_pin = 12;
-*/
-
 const int co2_warning_thr = 1000;
 const int co2_alarm_thr   = 1500;
 
 MHZ19 mhz19 = MHZ19(rx_pin,tx_pin);
-LiquidCrystal lcd(7,8,9,10,11,12);
+LiquidCrystal lcd(7, 8, 9, 10, 11, 12);
 
 unsigned long time;
 int lastppm = 0;
@@ -32,9 +23,11 @@ int lastppm = 0;
 
 void setup()
 {
-    Serial.begin(115200);
-    Serial.println("Time,CO2,Temp");
-    mhz19.begin(rx_pin, tx_pin);
+	Serial.begin(115200);
+	Serial.println("Time,CO2,Temp");
+
+	// MH-Z19
+	mhz19.begin(rx_pin, tx_pin);
 
 	// LCD
 	lcd.begin(16,2);
@@ -43,7 +36,7 @@ void setup()
 	lcd.setCursor(0,1);
 	lcd.print("says hello!");
 
-	// led+buzzer
+	// LEDs + buzzer
 	pinMode(led_green_pin, OUTPUT);
 	pinMode(led_yellow_pin, OUTPUT);
 	pinMode(led_red_pin, OUTPUT);
@@ -60,22 +53,22 @@ void setup()
 	digitalWrite(buzzer_pin, HIGH);
 	delay(200);
 	digitalWrite(buzzer_pin, LOW);
-	
+
 	lcd.clear();
 }
 
 
 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);
-    
+	time = millis();
+	measurement_t m = mhz19.getMeasurement();
+
+	Serial.print(time);
+	Serial.print(",");
+	Serial.print(m.co2_ppm);
+	Serial.print(",");
+	Serial.println(m.temperature);
+
 	digitalWrite(led_red_pin, m.co2_ppm >= co2_alarm_thr);
 	digitalWrite(led_yellow_pin, m.co2_ppm >= co2_warning_thr && m.co2_ppm < co2_alarm_thr);
 	digitalWrite(led_green_pin, m.co2_ppm < co2_warning_thr);
@@ -100,11 +93,11 @@ void loop()
 		digitalWrite(buzzer_pin, LOW);
 	}
 
-	lcd.setCursor(0,0);
+	lcd.setCursor(0, 0);
 	lcd.print("CO2: ");
 	lcd.print(m.co2_ppm);
 	lcd.print(" ppm         ");
 
-    lastppm = m.co2_ppm;
-    delay(5000);
+	lastppm = m.co2_ppm;
+	delay(5000);
 }