1 files changed, 85 insertions, 0 deletions

diff --git a/src/main/main.ino b/src/main/main.ino
new file mode 100644
index 0000000..bdab190
--- /dev/null
+++ b/src/main/main.ino
@@ -0,0 +1,85 @@
+#define TEMP_SENSOR_PIN 14
+#define HUMIDITY_SENSOR_PIN 14
+#define FAN_PIN 15
+#define CO2_PIN 16
+#define ULTRASONIC_PIN 17
+
+#define CHECK_FREQUENCY 1      // check sensors every second
+#define HUMIDITY_DESIRED 75
+#define HUMIDITY_VARIATION 3   // ultrasonic turns on at (75 - 3 = 72) and off
+                               // at (75 + 3 = 78)
+
+
+// Tempature + Humidity Sensor
+#include <Adafruit_Sensor.h>
+#include <DHT.h>
+#include <DHT_U.h>
+#define DHTTYPE DHT11
+#define DHTPIN TEMP_SENSOR_PIN
+DHT_Unified dht(DHTPIN, DHTTYPE);
+
+int get_humidity () {
+  // Get temperature event and print its value.
+  sensors_event_t event;
+  dht.temperature().getEvent(&event);
+  if (isnan(event.temperature)) {
+    Serial.println(F("Error reading temperature!"));
+  }
+  else {
+    return event.temperature;
+    /* Serial.print(F("Temperature: ")); */
+    /* Serial.print(event.temperature); */
+    /* Serial.println(F("°C")); */
+  }
+}
+
+int get_tempature () {
+  sensors_event_t event;
+  // Get humidity event and print its value.
+  dht.humidity().getEvent(&event);
+  if (isnan(event.relative_humidity)) {
+    Serial.println(F("Error reading humidity!"));
+  }
+  else {
+    return event.relative_humidity;
+    /* Serial.print(F("Humidity: ")); */
+    /* Serial.print(event.relative_humidity); */
+    /* Serial.println(F("%")); */
+  }
+}
+
+int get_co2 () { ; }
+bool start_ultrasonic () { ; }
+bool stop_ultrasonic () { ; }
+bool start_fan () { ; }
+bool stop_fan () { ; }
+
+
+bool log ( int humidity, int temp, int co2 ) {
+  Serial.printf("Tempature: %d\tHumidity: %d\tCO2: %d\n",
+                humidity, temp, co2);
+}
+
+void setup () {
+  Serial.begin(115200);
+  dht.begin();                  /* temp/humidity sensor */
+}
+
+void loop() {
+  delay(CHECK_FREQUENCY * 1000);
+  int humidity = get_humidity();
+  int temp = get_tempature();
+  int co2 = get_co2();
+
+  if ( humidity < (HUMIDITY_DESIRED - HUMIDITY_VARIATION) ) {
+    start_ultrasonic();
+    stop_fan();
+  } else if ( humidity > (HUMIDITY_DESIRED + HUMIDITY_VARIATION) ) {
+    start_fan();
+    stop_ultrasonic();
+  } else {
+    ; // keep doing the same
+  }
+
+  log(humidity, temp, co2);
+}