some cleanup (comments and whitespace)

diff --git a/airingbutler.ino b/airingbutler.ino
index c05a73738fce381080623ea4ee39d85a0ff4d4d8..c93f4ba89dad7496c546c027c24957dd18119b7a 100644 (file)
--- 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);
 }