main.cpp

00001 #include "mbed.h"
00002 #include "C12832.h"
00003 #include "tank.h"
00004 #include "HCSR04.h"
00005 #include "DHT.h"
00006 #include "Servo.h"
00007 
00008 
00009 C12832 lcd(p5, p7, p6, p8, p11);        // LCD screen
00010 PwmOut r (p23);                         // r = red LED
00011 PwmOut g (p24);                         // g = green LED
00012 HCSR04 sensor(p9, p20);                 // ultrasonic distance sensor
00013 DHT sensorB(p16,DHT11);                 // DHT11 temp & humi sensor
00014 DigitalOut fan(p18);                     //grove relay control DC fan
00015 DigitalOut myled(p14);                  //assigning greenled as digital output pin14
00016 AnalogIn ldr(p15);                      //assigning ldr as analog input p15
00017 AnalogIn soil_moisture(p19);             //soil moisture sensor
00018 Servo myservo(p21);                      //servo
00019 
00020 
00021 int main()
00022 {
00023     int error = 0;
00024     float h = 0.0f, c = 0.0f, f = 0.0f, k = 0.0f, dp = 0.0f, dpf = 0.0f;
00025     lcd.cls();
00026     char tmpString[16];
00027     int temp_format = 0;
00028     int humid_format = 0;
00029     float ldrout = 0.0;
00030     float range = 0.0005;
00031     float position = 0.5;
00032     float moisture_value = 0;
00033 
00034     while(true) {
00035 
00036                 lcd.cls();
00037                 lcd.locate(25,5);
00038                 lcd.printf("Tank Water Level");
00039                 lcd.locate(2,15);
00040                 lcd.printf("Greenhouse Control System");
00041                 wait(2.5);
00042 
00043                 lcd.cls();      //clear LCD
00044                 Timer timer;
00045                 {
00046 
00047                     sensor.setRanges(0, 500);       // water tank level 500mm
00048                     lcd.print_bm(bitmEmptyTank,80,0);     // print Empty Tank at location x=80, y=0
00049                     lcd.copy_to_lcd();
00050 
00051 
00052                     timer.reset();
00053                     timer.start();
00054                     sensor.startMeasurement();
00055 
00056                 }
00057                 lcd.locate(20,5);
00058                 lcd.printf("Distance:");
00059                 lcd.locate(20,17);
00060                 lcd.printf ("%5.1f mm\r", sensor.getDistance_mm());
00061                 timer.stop();
00062                 wait_ms(500 - timer.read_ms()); // time the loop
00063 
00064                 //turn RGB LED red if distance >400mm
00065 
00066                 if( sensor.getDistance_mm()< 400) r= 1; //red light on
00067                 else r = 0;
00068 
00069                 if( sensor.getDistance_mm()> 400) g=1; //green light on
00070                 else g=0;         //green light off
00071 
00072 
00073                 if( sensor.getDistance_mm() < 40 )  lcd.print_bm(bitmTank,80,0); //full tank
00074                 lcd.copy_to_lcd();
00075                 if( sensor.getDistance_mm() > 80 )  lcd.print_bm(bitmNinetyTank,80,0); //90% full tank
00076                 lcd.copy_to_lcd();
00077                 if( sensor.getDistance_mm() > 120  )  lcd.print_bm(bitmEightyTank,80,0); //80% full tank
00078                 lcd.copy_to_lcd();
00079                 if( sensor.getDistance_mm() > 160 )  lcd.print_bm(bitmSeventyTank,80,0); //70% full tank
00080                 lcd.copy_to_lcd();
00081                 if( sensor.getDistance_mm() > 200 )  lcd.print_bm(bitmSixtyTank,80,0); //60% full tank
00082                 lcd.copy_to_lcd();
00083                 if( sensor.getDistance_mm() > 240 )  lcd.print_bm(bitmFiftyTank,80,0); //50% full tank
00084                 lcd.copy_to_lcd();
00085                 if( sensor.getDistance_mm() > 280 )  lcd.print_bm(bitmFourtyTank,80,0); //40% full tank
00086                 lcd.copy_to_lcd();
00087                 if( sensor.getDistance_mm() > 320 )  lcd.print_bm(bitmThirtyTank,80,0); //30% full tank
00088                 lcd.copy_to_lcd();
00089                 if( sensor.getDistance_mm() > 360 )  lcd.print_bm(bitmTwentyTank,80,0); //20% full tank
00090                 lcd.copy_to_lcd();
00091                 if( sensor.getDistance_mm() > 400 )  lcd.print_bm(bitmTenTank,80,0); //10% full tank
00092                 lcd.copy_to_lcd();
00093                 if( sensor.getDistance_mm() > 440 )  lcd.print_bm(bitmEmptyTank,80,0); //empty tank
00094                 lcd.copy_to_lcd();
00095                 wait (2.5f);
00096 
00097 
00098                 lcd.cls();
00099                 lcd.locate(15,5);
00100                 lcd.printf("Temp & Humidi Level");
00101                 lcd.locate(2,15);
00102                 lcd.printf("Greenhouse Control System");
00103                 wait(2.5);
00104 
00105                 lcd.cls();      //clear LCD
00106         
00107 
00108         wait(0.5f);
00109         error = sensorB.readData();
00110 
00111         if (0 == error) {
00112 
00113             c   = sensorB.ReadTemperature(CELCIUS);
00114             f   = sensorB.ReadTemperature(FARENHEIT);
00115             k   = sensorB.ReadTemperature(KELVIN);
00116             h   = sensorB.ReadHumidity();
00117             dp  = sensorB.CalcdewPoint(c, h);
00118             dpf = sensorB.CalcdewPointFast(c, h);
00119         }
00120         lcd.cls();
00121         lcd.locate(0,0);
00122         lcd.printf("K: %4.2f, C: %4.2f, F %4.2f\n", k, c, f);
00123         lcd.locate(0,10);
00124         lcd.printf("H: %4.2f, D: %4.2f, DF: %4.2f\n", h, dp, dpf);
00125         lcd.locate(0,20);
00126         lcd.printf("Tempf: %d HumidF: %d\n", temp_format, humid_format);
00127         
00128         //turn fan on if temperature is above 26
00129         if(c > 20) fan=1;   //fan is on
00130         else fan=0;         //Fan is off
00131         wait(2.5);
00132         //wait 2 seconds and check temp again
00133 
00134 
00135         //Light Sensor System
00136 
00137         lcd.cls();
00138         lcd.locate(25,5);
00139         lcd.printf("Light Level");
00140         lcd.locate(2,15);
00141         lcd.printf("Greenhouse Control System");
00142         wait(2.5);
00143 
00144         ldrout=ldr.read();                        //read ldr value
00145 
00146         lcd.cls();
00147         lcd.locate(10,10);
00148         lcd.printf("Light Level is: %f\n :",ldrout);       //print ldr value on LCD
00149         if(ldrout < 0.6) {                                //if ldr value is smaller than 0.6 green LED turns on
00150 
00151             myled = 1;                                  //LED on
00152         } else {
00153             myled=0;                                    //LED off
00154         }
00155         wait(2.5);
00156 
00157         //Soil Moisture System
00158         lcd.cls();
00159         lcd.locate(25,5);
00160         lcd.printf("Soil Moisture Level");
00161         lcd.locate(2,15);
00162         lcd.printf("Greenhouse Control System");
00163         wait(2.5);
00164 
00165         moisture_value = soil_moisture.read () *3.3;                                               //soil moisture value
00166        
00167         lcd.cls();
00168         lcd.locate(0,0);                                                               //text location on screen
00169         lcd.printf("Moisture reading is: %1.2f\n", moisture_value );                     //display soil moisture value as a percentage
00170 
00171         if (moisture_value < 1)  {                                 //if soil moisture level is between 30 and 60 moisture level okay
00172             lcd.locate(0,10);
00173             lcd.printf("Moisture level not okay");
00174             position = 0.0;
00175         }
00176         else {
00177             lcd.locate(0,10);
00178             lcd.printf("Moisture level is okay");
00179             position = 1.0;
00180         }  
00181         myservo.write(position);
00182         wait(2.5);
00183     }
00184 }