main.cpp

00001 #include "mbed.h"
00002 #include "uLCD_4DGL.h"
00003 #include "AnalogIn.h"
00004 
00005 #include "Speaker.h"
00006 #include "PinDetect.h"
00007 
00008 #include "SDFileSystem.h"
00009 #include <string>
00010 
00011 #include "MMA8452.h"
00012 
00013 uLCD_4DGL uLCD(p9, p10, p11);          // used in all parts
00014 
00015 Speaker mySpeaker(p21);                // used in parts 4 and 6
00016 
00017 SDFileSystem sd(p5, p6, p7, p8, "sd"); // used in part 5
00018 
00019 Serial pc(USBTX,USBRX);                // used in part 6
00020 
00021 DigitalOut myled1(LED1);
00022 DigitalOut myled2(LED2);
00023 DigitalOut myled3(LED3);
00024 DigitalOut myled4(LED4);
00025 
00026 PinDetect pb1(p16);
00027 PinDetect pb2(p17);
00028 PinDetect pb3(p18);
00029 PinDetect selector(p14);
00030 
00031 int currentPart = 1; // global placeholder
00032 
00033 void part1() // What's up mbed!
00034 {
00035     // begin transition code
00036     uLCD.cls();
00037     uLCD.printf("\nLab 2 - part 1:\n  What's up mbed!\n");
00038     wait(2);
00039     uLCD.cls();
00040     // end transition code
00041     
00042     uLCD.printf("\nWhat's up mbed!\n");
00043 }
00044 
00045 void part2() // Bouncing Ball
00046 {
00047     // begin transition code
00048     uLCD.cls();
00049     uLCD.printf("\nLab 2 - part 2:\n  Bouncing Balls\n");
00050     wait(2);
00051     uLCD.cls();
00052     // end transition code
00053     
00054     
00055     uLCD.display_control(PORTRAIT);
00056     uLCD.cls();
00057     uLCD.printf("Bouncing Ball");
00058     uLCD.baudrate(BAUD_3000000); //jack up baud rate to max for fast display
00059     wait(1.0);
00060     
00061     //Set up initial conditions
00062     float fx=50.0,fy=21.0,vx=0.4,vy=0.3;
00063     int x=50,y=21,radius=4;
00064     uLCD.background_color(BLACK);
00065     uLCD.cls();
00066     
00067     //draw borders
00068     uLCD.line(0, 0, 127, 0, WHITE);
00069     uLCD.line(127, 0, 127, 127, WHITE);
00070     uLCD.line(127, 127, 0, 127, WHITE);
00071     uLCD.line(0, 127, 0, 0, WHITE);
00072     
00073     for (int i=0; i<1500; i++)
00074     {
00075         //draw ball
00076         uLCD.circle(x, y, radius, RED);
00077         //bounce off edge walls and slow down a bit
00078         if ((x<=radius+1) || (x>=126-radius)) vx = -.95*vx;
00079         if ((y<=radius+1) || (y>=126-radius)) vy = -.95*vy;
00080         //erase old ball location
00081         uLCD.filled_circle(x, y, radius, BLACK);
00082         //calculate new ball position
00083         fx=fx+vx;
00084         fy=fy+vy;
00085         x=(int)fx;
00086         y=(int)fy;
00087     } //end for loop
00088 }
00089 
00090 void part3() // Digital Thermometer
00091 {
00092     // begin transition code
00093     uLCD.cls();
00094     uLCD.printf("\nLab 2 - part 3:\n  Digital\n  Thermometer\n");
00095     wait(2);
00096     uLCD.cls();
00097     // end transition code
00098     
00099     
00100     class TMP36
00101     {
00102         public:
00103             TMP36(PinName pin);
00104             TMP36();
00105             float read();
00106         private:
00107             AnalogIn _pin;
00108     };
00109 
00110     TMP36::TMP36(PinName pin) : _pin(pin) {} //This is an initializer list … pass pin to AnalogIn constructor
00111     float TMP36::read()
00112     {
00113         //convert sensor reading to C
00114         return ((_pin.read() * 3.3) - 0.500) * 100.0;
00115         // _pin.read() returns normalized voltage value as float
00116     }
00117 
00118     //instantiate new class to set p15 to analog input
00119     //to read and convert TMP36 sensor's voltage output
00120     TMP36 myTMP36(p15);
00121 
00122     float tempC, tempF;
00123     while(1)
00124     {
00125         tempC = myTMP36.read();
00126         // convert to F
00127         tempF = (9.0 * tempC) / 5.0 + 32.0;
00128         // print current temp
00129         uLCD.cls();
00130         uLCD.printf("\n%5.2f C\n%5.2f F\n\n", tempC, tempF);
00131         wait(0.5);
00132     }
00133 }
00134 
00135 void part4() // Jazzy Tunes
00136 {
00137     // begin transition code
00138     uLCD.cls();
00139     uLCD.printf("\nLab 2 - part 4:\n  Jazzy Tunes\n");
00140     wait(2);
00141     uLCD.cls();
00142     // end transition code
00143     
00144     
00145     void pb1_hit_callback (void)
00146     {
00147         myled1 = !myled1;
00148         mySpeaker.PlayNote(200.0,0.25,0.1);
00149     }
00150     //------------------------------------------------------------------------------
00151     // Callback routine is interrupt activated by a debounced pb2 hit
00152     // That is … this code runs with interrupt is generated by second button press
00153     void pb2_hit_callback (void)
00154     {
00155         myled2 = !myled2;
00156         mySpeaker.PlayNote(400.0,0.25,0.1);
00157     }
00158     //------------------------------------------------------------------------------
00159     // Callback routine is interrupt activated by a debounced pb3 hit
00160     // That is … this code runs with interrupt is generated by third button press
00161     void pb3_hit_callback (void)
00162     {
00163         myled3 = !myled3;
00164         mySpeaker.PlayNote(800.0,0.25,0.1);
00165     }
00166     //------------------------------------------------------------------------------
00167 
00168     //setup push buttons
00169     pb1.mode(PullUp);
00170     pb2.mode(PullUp);
00171     pb3.mode(PullUp);
00172     // Delay for initial pullup to take effect
00173     wait(.01);
00174     // Setup Interrupt callback functions for a pb hit
00175     pb1.attach_deasserted(&pb1_hit_callback);
00176     pb2.attach_deasserted(&pb2_hit_callback);
00177     pb3.attach_deasserted(&pb3_hit_callback);
00178     // Start sampling pb inputs using interrupts
00179     pb1.setSampleFrequency();
00180     pb2.setSampleFrequency();
00181     pb3.setSampleFrequency();
00182     // pushbuttons now setup and running
00183     while(1)
00184     {
00185         myled4 = !myled4;
00186         wait(0.5);
00187     }
00188 }
00189 
00190 void part5_1() // Hello Micro SD Card - Writing
00191 {
00192     // begin transition code
00193     uLCD.cls();
00194     uLCD.printf("\nLab 2 - part 5.1:\n  Hello Micro SD\n  Card - Writing\n");
00195     wait(2);
00196     uLCD.cls();
00197     // end transition code
00198     
00199     
00200     uLCD.printf("Hello Micro SD\nCard!\n");
00201     mkdir("/sd/mydir", 0777);
00202     FILE *fp = fopen("/sd/mydir/sdtest.txt", "w");
00203     if(fp == NULL) 
00204     {
00205         uLCD.printf("Error on open \n");
00206     }
00207     fprintf(fp, "I love ECE2036");
00208     fclose(fp);
00209 }
00210 
00211 void part5_2() // Hello Micro SD Card - Reading
00212 {
00213     // begin transition code
00214     uLCD.cls();
00215     uLCD.printf("\nLab 2 - part 5.2:\n  Hello Micro SD\n  Card - Reading\n");
00216     wait(2);
00217     uLCD.cls();
00218     // end transition code
00219     
00220     
00221     string inputString;
00222     uLCD.printf("Content of sdtest.txt is: \n");
00223     FILE *fp = fopen("/sd/mydir/sdtest.txt", "r");
00224     if(fp == NULL) 
00225     {
00226         uLCD.printf("Error on open \n");
00227     }
00228     else
00229     {
00230         while (fscanf(fp,"%s", inputString)!= EOF) //reads in a string delineated by white space
00231         {
00232             uLCD.printf("%s ", inputString.c_str());
00233         }
00234     }
00235     fclose(fp);
00236 }
00237 
00238 void part6() // Triple Axis Accelerometer
00239 {
00240     // begin transition code
00241     uLCD.cls();
00242     uLCD.printf("\nLab 2 - part 6:\n  Triple Axis\n  Accelerometer\n");
00243     wait(2);
00244     uLCD.cls();
00245     // end transition code
00246     
00247     
00248     // you can play around with the parameters to see the response
00249     int radius = 10;
00250     int offsetx = 63;
00251     int offsety = 63;
00252     double factor = 50;
00253     double music_factor = 200;
00254     bool MusicOn = false;
00255    
00256     //set the push buttons that control sounds
00257     pb1.mode(PullUp);
00258     pb2.mode(PullUp);
00259     //I will not use interupts like in jazzy tunes
00260  
00261    
00262     double x = 0, y = 0, z = 0;
00263  
00264     MMA8452 acc(p28, p27, 40000);  //instantiate an acc object! 
00265    
00266     //set parameters -- use these and don't change
00267     acc.setBitDepth(MMA8452::BIT_DEPTH_12);
00268     acc.setDynamicRange(MMA8452::DYNAMIC_RANGE_4G);
00269     acc.setDataRate(MMA8452::RATE_100);
00270    
00271    
00272     while(1) 
00273     {
00274         uLCD.circle(-1*y*factor+offsety, -1*x*factor+offsetx, radius, BLACK);
00275        
00276         if(!acc.isXYZReady()) 
00277         {
00278             wait(0.01);
00279         }
00280         else
00281         { 
00282             acc.readXYZGravity(&x,&y,&z); //notice this is passed by reference use pointers
00283       
00284             uLCD.circle(-1*y*factor+offsety, -1*x*factor+offsetx, radius, WHITE);
00285       
00286             if (MusicOn) mySpeaker.PlayNote(440.0+x*music_factor,0.25+0.2*y,0.05);
00287       
00288             if (pb1 == true) MusicOn = true;
00289            
00290             if (pb2 == false) MusicOn = false;
00291                  
00292             // You can uncomment this line to see the values coming off the MMA8452           
00293             uLCD.cls();
00294             uLCD.printf("\n(%.2f,%.2f,%.2f)  \n", x,y,z);
00295       
00296         } //end else
00297       
00298     } //end infinite while loop
00299 }
00300 
00301 void main_callback()
00302 {
00303     switch (currentPart)
00304     {
00305         case 1: part1();
00306                 currentPart++;
00307                 break;
00308         case 2: part2();
00309                 currentPart++;
00310                 break;
00311         case 3: part3();
00312                 currentPart++;
00313                 break;
00314         case 4: part4();
00315                 currentPart++;
00316                 break;
00317         case 5: part5_1();
00318                 part5_2();
00319                 currentPart++;
00320                 break;
00321         case 6: part6();
00322                 currentPart = 1;
00323                 break;
00324         
00325     }
00326 }
00327 
00328 int main() {
00329     selector.mode(PullUp);
00330     wait(.01);
00331     selector.attach_deasserted(&main_callback);
00332     selector.setSampleFrequency();
00333     while(1) 
00334     {
00335         continue;
00336     }
00337 }