some cleanup (comments and whitespace)

[toast/airingbutler.git] / airingbutler.ino

diff --git a/airingbutler.ino b/airingbutler.ino
index 5e33a802de0d8974a251825de1f6810b3b5b2e97..c93f4ba89dad7496c546c027c24957dd18119b7a 100644 (file)
--- a/airingbutler.ino
+++ b/airingbutler.ino
@@ -1,4 +1,5 @@
 #include <SoftwareSerial.h>
 #include <SoftwareSerial.h>

+#include <LiquidCrystal.h>

 #include "MHZ19.h"
 
 const int rx_pin = 2; // connect to TX on MHZ19
 #include "MHZ19.h"
 
 const int rx_pin = 2; // connect to TX on MHZ19


@@ -8,23 +9,38 @@ const int led_green_pin  = 4;
 const int led_yellow_pin = 5;
 const int led_red_pin    = 6;
 
 const int led_yellow_pin = 5;
 const int led_red_pin    = 6;
 

+const int buzzer_pin = 13;
+

 const int co2_warning_thr = 1000;
 const int co2_alarm_thr   = 1500;
 
 MHZ19 mhz19 = MHZ19(rx_pin,tx_pin);
 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);
+

 unsigned long time;
 unsigned long time;

+int lastppm = 0;

 
 
 void setup()
 {
 
 
 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);

 
 

-       // led
+       // LCD
+       lcd.begin(16,2);
+       lcd.setCursor(0,0);
+       lcd.print("Airing Butler");
+       lcd.setCursor(0,1);
+       lcd.print("says hello!");
+
+       // LEDs + buzzer

        pinMode(led_green_pin, OUTPUT);
        pinMode(led_yellow_pin, OUTPUT);
        pinMode(led_red_pin, OUTPUT);
        pinMode(led_green_pin, OUTPUT);
        pinMode(led_yellow_pin, OUTPUT);
        pinMode(led_red_pin, OUTPUT);

+       pinMode(buzzer_pin, OUTPUT);

        digitalWrite(led_green_pin, HIGH);
        delay(500);
        digitalWrite(led_green_pin, LOW);
        digitalWrite(led_green_pin, HIGH);
        delay(500);
        digitalWrite(led_green_pin, LOW);


@@ -34,24 +50,54 @@ void setup()
        digitalWrite(led_red_pin, HIGH);
        delay(500);
        digitalWrite(led_red_pin, LOW);
        digitalWrite(led_red_pin, HIGH);
        delay(500);
        digitalWrite(led_red_pin, LOW);

+       digitalWrite(buzzer_pin, HIGH);
+       delay(200);
+       digitalWrite(buzzer_pin, LOW);
+
+       lcd.clear();

 }
 
 
 void loop()
 {
 }
 
 
 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);
 
        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);
 

-    delay(5000);
-}
+       if (m.co2_ppm >= co2_alarm_thr && lastppm < co2_alarm_thr) {
+               digitalWrite(buzzer_pin, HIGH);
+               delay(100);
+               digitalWrite(buzzer_pin, LOW);
+               delay(100);
+               digitalWrite(buzzer_pin, HIGH);
+               delay(100);
+               digitalWrite(buzzer_pin, LOW);
+               delay(100);
+               digitalWrite(buzzer_pin, HIGH);
+               delay(100);
+               digitalWrite(buzzer_pin, LOW);
+       }
+
+       if (m.co2_ppm >= co2_warning_thr && lastppm < co2_warning_thr) {
+               digitalWrite(buzzer_pin, HIGH);
+               delay(500);
+               digitalWrite(buzzer_pin, LOW);
+       }

 
 

+       lcd.setCursor(0, 0);
+       lcd.print("CO2: ");
+       lcd.print(m.co2_ppm);
+       lcd.print(" ppm         ");
+
+       lastppm = m.co2_ppm;
+       delay(5000);
+}