main.cpp

00001 // skeleton code for ECE 2036 thermostat lab
00002 // code must be added by students
00003 #include "mbed.h"
00004 #include "TMP36.h"
00005 #include "SDFileSystem.h"
00006 #include "uLCD_4DGL.h"
00007 #include "PinDetect.h"
00008 #include "Speaker.h"
00009 // must add your new class code to the project file Shiftbrite.h
00010 #include "Shiftbrite.h"
00011 
00012 // use class to setup temperature sensor pins
00013 TMP36 myTMP36(p15);  //Analog in
00014 
00015 // use class to setup microSD card filesystem
00016 SDFileSystem sd(p5, p6, p7, p8, "sd");
00017 
00018 // use class to setup the  Color LCD
00019 uLCD_4DGL uLCD(p28, p27, p29); // create a global uLCD object
00020 
00021 // use class to setup pushbuttons pins
00022 PinDetect pb1(p23);
00023 PinDetect pb2(p24);
00024 PinDetect pb3(p25);
00025 
00026 // use class to setup speaker pin
00027 Speaker mySpeaker(p21); //PWM out
00028 
00029 // use class to setup Shiftbrite pins
00030 Shiftbrite myShiftbrite(p9, p10, p11, p12, p13);// ei li di n/c ci
00031 
00032 // use class to setup Mbed's four on-board LEDs
00033 DigitalOut myLED1(LED1);
00034 DigitalOut myLED2(LED2);
00035 DigitalOut myLED3(LED3);
00036 DigitalOut myLED4(LED4);
00037 
00038 
00039 
00040 //also setting any unused analog input pins to digital outputs reduces A/D noise a bit
00041 //see http://mbed.org/users/chris/notebook/Getting-best-ADC-performance/
00042 DigitalOut P16(p16);
00043 DigitalOut P17(p17);
00044 DigitalOut P18(p18);
00045 DigitalOut P19(p19);
00046 DigitalOut P20(p20);
00047 
00048 
00049 
00050 
00051 // Global variables used in callbacks and main program
00052 // C variables in interrupt routines should use volatile keyword
00053 int volatile heat_setting=78; // heat to temp
00054 int volatile cool_setting=68; // cool to temp
00055 bool volatile mode=false; // heat or cool mode
00056 
00057 // Callback routine is interrupt activated by a debounced pb1 hit
00058 void pb1_hit_callback (void)
00059 {
00060 // ADD CODE HERE
00061 }
00062 // Callback routine is interrupt activated by a debounced pb2 hit
00063 void pb2_hit_callback (void)
00064 {
00065 // ADD CODE HERE
00066 }
00067 // Callback routine is interrupt activated by a debounced pb3 hit
00068 void pb3_hit_callback (void)
00069 {
00070 // ADD CODE HERE
00071 }
00072 
00073 
00074 int main()
00075 {
00076     float Current_temp=0.0;
00077 
00078     // Use internal pullups for the three pushbuttons
00079     pb1.mode(PullUp);
00080     pb2.mode(PullUp);
00081     pb3.mode(PullUp);
00082     // Delay for initial pullup to take effect
00083     wait(.01);
00084     // Setup Interrupt callback functions for a pb hit
00085     pb1.attach_deasserted(&pb1_hit_callback);
00086     pb2.attach_deasserted(&pb2_hit_callback);
00087     pb3.attach_deasserted(&pb3_hit_callback);
00088     // Start sampling pb inputs using interrupts
00089     pb1.setSampleFrequency();
00090     pb2.setSampleFrequency();
00091     pb3.setSampleFrequency();
00092     // pushbuttons now setup and running
00093 
00094 
00095     // start I/O examples - DELETE THIS IN YOUR CODE..BUT WILL USE THESE I/O IDEAS ELSEWHERE
00096     // since all this compiles - the needed *.h files for these are in the project
00097     //
00098     Current_temp = myTMP36; //Read temp sensor
00099     printf("Hello PC World\n\r"); // need terminal application running on PC to see this output
00100     uLCD.printf("\n\rHello LCD World\n\r"); // LCD
00101     mySpeaker.PlayNote(500.0, 1.0, 1.0); // Speaker buzz
00102     myShiftbrite.write( 0, 50 ,0); // Green RGB LED
00103     // SD card write file example - prints error message on PC when running until SD card hooked up
00104     // Delete to avoid run time error
00105     mkdir("/sd/mydir", 0777); // set up directory and permissions
00106     FILE *fp = fopen("/sd/mydir/sdtest.txt", "w"); //open SD
00107     if(fp == NULL) {
00108         error("Could not open file for write\n");
00109     }
00110     fprintf(fp, "Hello SD Card World!"); // write SD
00111     fclose(fp); // close SD card
00112     //
00113     // end I/O examples
00114 
00115 
00116 
00117 
00118     // State machine code below will need changes and additions
00119     while (1) {
00120         {
00121             enum Statetype { Heat_off = 0, Heat_on };
00122             Statetype state = Heat_off;
00123             while(1) {
00124                 switch (state) {
00125                     case Heat_off:
00126                         myLED4 = 0;
00127                         state = Heat_on;
00128                         break;
00129                     case Heat_on:
00130                         myLED4 = 1;
00131                         state = Heat_off;
00132                         break;
00133                 }
00134                 wait(0.33);
00135                 // heartbeat LED - common debug tool
00136                 // blinks as long as code is running and not locked up
00137                 myLED1=!myLED1;
00138             }
00139         }
00140     }
00141 }