main.cpp

00001 #include "mbed.h"
00002 #include "DHT.h"
00003 #include"Air_Quality.h"
00004 
00005 AirQuality airqualitysensor;
00006 int current_quality = -1;
00007 PinName analogPin = A0;
00008 
00009 DHT sensor(D4, DHT11);
00010 InterruptIn motion(D3);
00011 AnalogIn luminance(A1);
00012 
00013 DigitalOut led_R(LED_RED);
00014 DigitalOut led_G(LED_GREEN);
00015 DigitalOut led_B(LED_BLUE);
00016 
00017 int motion_detected = 0;
00018 
00019 // Interrupt Handler
00020 void AirQualityInterrupt()
00021 {
00022     AnalogIn sensor(analogPin);
00023     airqualitysensor.last_vol = airqualitysensor.first_vol;
00024     airqualitysensor.first_vol = sensor.read()*1000;
00025     airqualitysensor.timer_index = 1;
00026 }
00027 
00028 void irq_handler(void)
00029 {
00030     motion_detected = 1;
00031 }
00032 
00033 int main()
00034 {
00035     int error = 0;
00036     float hum = 0.0f;
00037     float cel = 0.0f;
00038     
00039     airqualitysensor.init(analogPin, AirQualityInterrupt);
00040     
00041     motion.rise(&irq_handler);
00042     
00043     while(1)
00044     {
00045         wait(0.3);
00046         error = sensor.readData();
00047         
00048         if (0 == error) {
00049             hum = sensor.ReadHumidity();
00050             cel = sensor.ReadTemperature(CELCIUS);
00051             printf("1. Humidity : %4.2f\r\n\n", hum);
00052             wait(0.3);
00053             printf("2. Temperature in Celcius : %2.2f\r\n\n", cel);
00054             wait(0.3);
00055         }
00056         else {
00057             //printf("Error : %d\n", error);
00058         }
00059         
00060         if(motion_detected) {
00061             motion_detected = 0;
00062 
00063             printf("3. Something move!\r\n\n");
00064             wait(0.3); 
00065         }
00066         
00067         if(luminance.read()){
00068             
00069             if(0.1<=luminance.read()&&luminance.read()<=0.3){
00070                 led_R=0; led_G=0; led_B=1;}   // yellow LED on
00071                 
00072             else{
00073                 led_R=1; led_G=1; led_B=1;}   // led off
00074              
00075             printf("4. Luminance: %f\r\n\n", luminance.read());    
00076             wait(0.3);
00077         }
00078         else {
00079             led_R=0; led_G=0; led_B=0;    // white LED on 
00080             printf("4. Luminance: %f\r\n\n", luminance.read());
00081             wait(0.3);         
00082         }
00083         //air quality sensor
00084         current_quality=airqualitysensor.slope();
00085         if (current_quality >= 0) { // if a valid data returned.
00086             if (current_quality == 0)
00087                 printf("  High pollution! Force signal active\n\r\n");
00088             else if (current_quality == 1)
00089                 printf("  High pollution!\n\r\n");
00090             else if (current_quality == 2)
00091                 printf("  Low pollution!\n\n\r");
00092             else if (current_quality == 3)
00093                 printf("  Fresh air!\n\r\n");
00094         }
00095     }
00096 }