X-Git-Url: https://git.toastfreeware.priv.at/toast/airingbutler.git/blobdiff_plain/b0e36cf35d995efe646e45afbb57b8a1b9e51381..a51d525b75ead2c23ef83795d8ff60b76796d72c:/airingbutler.ino

diff --git a/airingbutler.ino b/airingbutler.ino
index e348675..a446855 100644
--- a/airingbutler.ino
+++ b/airingbutler.ino
@@ -18,10 +18,19 @@ MHZ19 mhz19 = MHZ19(rx_pin,tx_pin);
 LiquidCrystal lcd(7, 8, 9, 10, 11, 12);
 
 unsigned long time;
+unsigned long warmuptime = 60000; // 1 min.
 int co2 = 0;
 int temp = 0;
 int lastppm = 0;
 
+void buzz(unsigned long pause, int count) {
+	for (int i = 0; i <= count; i++) {
+		digitalWrite(buzzer_pin, HIGH);
+		delay(pause);
+		digitalWrite(buzzer_pin, LOW);
+		if (i < count - 1) delay(pause);
+	}
+}
 
 void setup()
 {
@@ -32,17 +41,16 @@ void setup()
 	mhz19.begin(rx_pin, tx_pin);
 
 	// LCD
-	lcd.begin(16,2);
-	lcd.setCursor(0,0);
+	lcd.begin(16, 2);
+	lcd.setCursor(0, 0);
 	lcd.print("Airing Butler");
-	lcd.setCursor(0,1);
+	lcd.setCursor(0, 1);
 	lcd.print("says hello!");
 
-	// LEDs + buzzer
+	// LEDs
 	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);
@@ -52,9 +60,10 @@ void setup()
 	digitalWrite(led_red_pin, HIGH);
 	delay(500);
 	digitalWrite(led_red_pin, LOW);
-	digitalWrite(buzzer_pin, HIGH);
-	delay(200);
-	digitalWrite(buzzer_pin, LOW);
+
+	// buzzer
+	pinMode(buzzer_pin, OUTPUT);
+	buzz(200, 1);
 
 	lcd.clear();
 }
@@ -78,30 +87,21 @@ void loop()
 	digitalWrite(led_green_pin, co2 < co2_warning_thr);
 
 	if (co2 >= 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);
+		buzz(100, 3);
 	}
 
 	if (co2 >= co2_warning_thr && lastppm < co2_warning_thr) {
-		digitalWrite(buzzer_pin, HIGH);
-		delay(500);
-		digitalWrite(buzzer_pin, LOW);
+		buzz(500, 1);
 	}
 
 	lcd.setCursor(0, 0);
 	lcd.print("CO2: ");
 	lcd.print(co2);
+	if (time < warmuptime && (co2 == -1 || co2 == 410)) {
+		lcd.print (" (W)");
+	}
 	lcd.print(" ppm    ");
-	lcd.setCursor(0,1);
+	lcd.setCursor(0, 1);
 	lcd.print("Temp: ");
 	lcd.print(temp);
 	lcd.print(" C +/-  ");