main.cpp

00001 #include "mbed.h"
00002 #include "uLCD_4DGL.h"
00003 #include "Speaker.h"
00004 #include "DS1820.h"
00005 #include "PinDetect.h"
00006 #include <time.h>
00007 
00008 //Program by: Tianhang Ren, Minsuk Chun, Richard Lee
00009 
00010 ////////////////////////////////////////////////////////
00011 //Initialize
00012 ///////////////////////////////////////////////////////
00013 
00014 DS1820 probe(p5);
00015 PinDetect pbUp(p18);          // Buttons to raise/lower/enter temperature
00016 PinDetect pbDown(p19);
00017 PinDetect pbEnter (p20);
00018 Serial pc(USBTX, USBRX);     // serial comms over usb back to console
00019 //Timer T;
00020 DigitalOut myled1(LED1);       // On when relay is engaged
00021 DigitalOut myled2(LED2);
00022 DigitalOut myled3(LED3);
00023 DigitalOut myled4(LED4);
00024 uLCD_4DGL uLCD(p28, p27, p29); // create a global uLCD object
00025 
00026 DigitalOut ctrl(p8); //relay control
00027 
00028 // setup instance of new Speaker class, mySpeaker using pin 21
00029 // the pin must be a PWM output pin
00030 Speaker mySpeaker(p26);
00031 
00032 float userTemp = 0; //user desired temperature of device
00033 int check = 0; //indicates whether enter key is pressed
00034 float timeCook = 0;
00035 
00036 
00037 ////////////////////////////////////////////////////////
00038 // Initialize pushbuttons
00039 ///////////////////////////////////////////////////////
00040 
00041 
00042 // Callback routine is interrupt activated by a debounced pb1 hit
00043 void pbUp_hit_callback (void)
00044 {
00045     // CODE HERE WILL RUN WHEN INTERUPT IS GENERATED
00046     myled1 = !myled1;
00047     mySpeaker.PlayNote(200.0,0.25,0.1);
00048     userTemp++;
00049     timeCook +=5; //TODO CHANGE TIME BACK TO 10 INTERVALS
00050 }
00051 
00052 // Callback routine is interrupt activated by a debounced pb2 hit
00053 void pbDown_hit_callback (void)
00054 {
00055     // CODE HERE WILL RUN WHEN INTERUPT IS GENERATED
00056     myled2 = !myled2;
00057     mySpeaker.PlayNote(400.0,0.25,0.1);
00058     userTemp--;
00059     if (userTemp <=0) {
00060         userTemp = 0;
00061     }
00062     timeCook-=5;
00063     if (timeCook <=0)
00064         timeCook=0;
00065 }
00066 // Callback routine is interrupt activated by a debounced pb3 hit
00067 void pbEnter_hit_callback (void)
00068 {
00069     // CODE HERE WILL RUN WHEN INTERUPT IS GENERATED
00070     myled3 = !myled3;
00071     mySpeaker.PlayNote(800.0,0.10,0.1);
00072     mySpeaker.PlayNote(1000.0,0.10,0.1);
00073     mySpeaker.PlayNote(1200.0,0.10,0.1);
00074     check++;
00075 }
00076 
00077 ////////////////////////////////////////////////////////
00078 // Main method starts here
00079 ////////////////////////////////////////////////////////
00080 
00081 int main()
00082 {
00083 //setup three SPST push buttons
00084     pbUp.mode(PullUp); //add internal pullup resistor
00085     pbDown.mode(PullUp);
00086     pbEnter.mode(PullUp);
00087 
00088 // Delay for initial pullup to take effect
00089     wait(.01);
00090 
00091 // Setup Interrupt callback functions for a pb hit
00092     pbUp.attach_deasserted(&pbUp_hit_callback);
00093     pbDown.attach_deasserted(&pbDown_hit_callback);
00094     pbEnter.attach_deasserted(&pbEnter_hit_callback);
00095 
00096 // Start sampling pb inputs using interrupts
00097     pbUp.setSampleFrequency();
00098     pbDown.setSampleFrequency();
00099     pbEnter.setSampleFrequency();
00100 
00101 // pushbuttons now setup and running
00102 
00103 ////////////////////////////////////////////////////////
00104 // Ask for temperature and time desired
00105 ////////////////////////////////////////////////////////
00106 
00107     uLCD.printf("Enter desired temperature"); //Ask for desired temperature
00108     while(check ==0) { //if check flag is 0, means enter has not been pushed
00109         if (pbUp) {
00110             uLCD.locate(0,3);
00111             uLCD.printf("%4.0f", userTemp);
00112         }
00113         if (pbDown) {
00114             uLCD.locate(0,3);
00115             uLCD.printf("%4.0f", userTemp);
00116         }
00117     }
00118 
00119     float finalTemp = userTemp; //reassign to final temp
00120     check = 0;
00121     uLCD.cls();
00122     uLCD.locate(0,0);
00123     timeCook = 0; //reset timeCook
00124     uLCD.printf("Enter cooking time"); //Cooking time in minutes
00125     while (check == 0) {
00126         if (pbUp) {
00127             uLCD.locate(0,3);
00128             uLCD.printf("%4.0f", timeCook);
00129         }
00130         if (pbDown) {
00131             uLCD.locate(0,3);
00132             uLCD.printf("%4.0f", timeCook);
00133         }
00134     }
00135     float finalTime = timeCook *60; //reassign to final time
00136     ctrl = 1;                   // Turn on relay
00137     float tempLimit = 0;        //intitialize variable to track temperature
00138     uLCD.locate(0,0);
00139     uLCD.printf("Set Temp (C)", finalTemp);  //print set temperature
00140     while (tempLimit < (finalTemp + 1)) {       //Loop while temperature is 1 degrees over destination
00141         probe.convertTemperature(true, DS1820::all_devices);         //Start temperature conversion, wait until ready
00142         tempLimit = probe.temperature();
00143         uLCD.locate(0,3);
00144         uLCD.printf("It is %3.1foC\r", probe.temperature());
00145         wait(1);
00146     }
00147 ////////////////////////////////////////////////////////
00148 // Start cooking with finalized temperatures and time
00149 ////////////////////////////////////////////////////////
00150 
00151     //PLAY SOUND FROM SPEAKER
00152     /*    T.start();  //Timer start (s)*/
00153     float time_remaining = 1;
00154     ctrl = 0;
00155     uLCD.cls();
00156     uLCD.locate(0,0);
00157     uLCD.printf("Set Temperature %4.0foC\r", finalTemp);
00158     set_time(1256729737);  // Set RTC time to Wed, 28 Oct 2009 11:35:37
00159     // time_t seconds = time(NULL);
00160 
00161     while(time_remaining > 0) { //Loop while timer has not reached desired time
00162         if (tempLimit < (finalTemp - 1)) { //If temperature is 2 degrees C lower than desired, turn relay on
00163             ctrl = 1;
00164         } else if (tempLimit >= finalTemp) {
00165             ctrl = 0;
00166         }
00167         tempLimit = probe.temperature();
00168         probe.convertTemperature(true, DS1820::all_devices);        //Start temperature conversion, wait until ready
00169         uLCD.locate(0,3);
00170         uLCD.printf("It is %3.1foC\r", probe.temperature());
00171         uLCD.locate(0,5);
00172         time_t seconds = time(NULL); //Cycle RTC
00173         time_remaining = finalTime - (seconds - 1256729737);
00174 
00175         if ((time_remaining/3600) >= 1 )
00176             uLCD.printf("Time remaining: \n%4.0f hours", time_remaining/3600);
00177         else if ((time_remaining/60) >= 1)
00178             uLCD.printf("Time remaining: %4.0f minutes", time_remaining/60);
00179         else
00180             uLCD.printf("Time remaining: %4.0f seconds", time_remaining);
00181     }
00182 
00183     ctrl = 0;
00184     
00185     //PLAY SOUND FROM SPEAKER
00186     mySpeaker.PlayNote(1567.98,0.25,0.1);
00187     mySpeaker.PlayNote(1046.50,0.25,0.1);
00188     mySpeaker.PlayNote(1174.66,0.25,0.1);
00189     mySpeaker.PlayNote(1318.51,0.25,0.1);
00190     mySpeaker.PlayNote(1396.91,0.25,0.1);
00191     mySpeaker.PlayNote(1567.98,0.25,0.1);
00192     mySpeaker.PlayNote(1046.50,0.25,0.1);
00193     mySpeaker.PlayNote(1046.50,0.25,0.1);
00194     mySpeaker.PlayNote(1760.00,0.25,0.1);
00195     mySpeaker.PlayNote(1396.91,0.25,0.1);
00196     mySpeaker.PlayNote(1567.98,0.25,0.1);
00197     mySpeaker.PlayNote(1760.00,0.25,0.1);
00198     mySpeaker.PlayNote(1975.53,0.25,0.1);
00199     mySpeaker.PlayNote(2093.00,0.25,0.1);
00200     mySpeaker.PlayNote(1046.50,0.25,0.1);
00201     mySpeaker.PlayNote(1046.50,0.25,0.1);
00202     
00203     uLCD.cls();
00204     uLCD.locate(0,0);
00205     uLCD.printf("Food is ready");
00206 }
00207