Diff: ultrasonic.cpp

Revision:

2:184524f95eb1

Parent:

1:920749af1300

Child:

3:bbfabbbc4291

--- a/ultrasonic.cpp	Tue May 05 03:08:14 2015 +0000
+++ b/ultrasonic.cpp	Thu May 07 16:43:32 2015 +0000
@@ -3,6 +3,7 @@
 #include "beep.h"
 #include "SRF02.h"
 #include "timeMgr.h"
+#include "datafile.h"
 
 
 //    VCC,SCE,RST,D/C,MOSI,SCLK,LED
@@ -10,41 +11,34 @@
 // Can also power (VCC) directly from VOUT (3.3 V) -
 // Can give better performance due to current limitation from GPIO pin
 
-//          SDA, SCL    
+//          SDA, SCL
 SRF02 sensor(p28,p27);
 
 Beep beep1(p21);
 AnalogIn potIn (p20);
 
- DigitalOut Led1 (p24);
- DigitalOut Led2 (p14);
- DigitalOut Led3 (p25);
- DigitalOut Led4 (p23);   
+DigitalOut Led1 (p24);
+DigitalOut Led2 (p14);
+DigitalOut Led3 (p25);
+DigitalOut Led4 (p23);
 //=========================
 InterruptIn button1 (p17);
 InterruptIn button2 (p29);
 InterruptIn button3 (p30);
-
- 
- 
-
 //===============================
 int button1Flag = 0;
 int button2Flag = 0;
-int button3Flag = 0; 
+int button3Flag = 0;
 int msgFlag = 1;
 
 //function declarations
 //=========================
 void introMessage();
-void endMessage();
 void errorHandler();
 void menu();
 void demo();
 void cursorSelect(int, int, int, int);
-void cursorMove(int);
 void beeper(float, float);
-void introMessageTimer();
 void menuLevel(float);
 void startMessage();
 void displayClock();
@@ -52,479 +46,571 @@
 void distMeasure();
 void saveData();
 void adjustBrightness(float);
-void systemTest();
+void sysClock();
+void startClockMsg();
+void clearRow();
+void snapShot();
 //------------------------
 void button1Pressed();
 void button2Pressed();
 void button3Pressed();
-//Global variables initialisation
-//=================================
-//Timer introTimer;
+
 
 int menuLevelFlag = 0;
 int brightFlag = 0;
 int distFlag = 0;
 int clockFlag = 0;
-//------------------------------
+
 
 Ticker distTimer;
 int dstFlg = 0;
 void distChk()
 {
-    dstFlg = 1;      
-}    
+    dstFlg = 1;
+}
 
 
 Ticker clkTimer;
 int clkFlg = 0;
 void clkChk()
 {
-    clkFlg = 1;      
-}    
+    clkFlg = 1;
+}
+
+void buzzerRange();
 
+int distance;
+//--------------------
+
+int speedTime;
+int soundDist;
+int soundSpeed;
+int Mspeed;
+
+//--------------------
 
 
 int main()
 {
     // first need to initialise display
     lcd.init();
-   
-   // button2.rise(&button2Pressed);
-   
-    //beeper(1000, 0.5); 
- 
+
+    // beeper(1000, 0.5);
+
     serial.attach(&serialISR); // attach serial ISR
     timer2.attach(&timer2Expired,1.0);
-    
+
     set_time(1424535031); // initialise time to 1st January 1970
-    
-    
+    //1424535031
+
     introMessage();
-    
-    button1.rise(&button1Pressed); 
+
+    button1.rise(&button1Pressed);
     button3.rise(&button3Pressed);
 //-----------------------------------------------------
-   
+
 //-----------------------------------------------------
     distTimer.attach(&distChk, 1.0); //call ISR every 5 sec
     clkTimer.attach(&clkChk, 1.0); //call ISR every 5 sec
     while(1) 
-    { 
-        if (msgFlag)
+    {
+        if (msgFlag) 
         {
-            startMessage(); 
-        }  
+            startMessage();
+        }
 
-        if (button1Flag)
-        {       
+        if (button1Flag) 
+        {
             msgFlag=0;
-            menu(); 
-            menuLevelFlag = 1; 
-        } 
-        
-        if (menuLevelFlag)
+            menu();
+            menuLevelFlag = 1;
+        }
+
+        if (menuLevelFlag) 
         {
             button1Flag =0;
-            menuLevel(potIn);   
+            menuLevel(potIn);
         }
-        
-         if (distFlag)
+
+        if (distFlag) 
         {
             menuLevelFlag = 0;
-            if (dstFlg)
+            if (dstFlg) 
             {
                 dstFlg = 0;
                 distMeasure();
-                if(button1)
+
+                if(button1) 
                 {
-                    distFlag = 0;         
-                } 
-             }      
-        } 
-        
-       if (brightFlag)
-        {       
-            menuLevelFlag = 0;
-            
-                
-                adjustBrightness(potIn); 
-                if (button1)
-                {
-                    brightFlag = 0;  
+                    distFlag = 0;
                 }
-                
+            }
         }
-        if (clockFlag)
+
+        if (brightFlag) 
         {
             menuLevelFlag = 0;
-            if (clkFlg)
+            adjustBrightness(potIn);
+            if (button1) 
+            {
+                brightFlag = 0;
+            }
+
+        }
+        if (clockFlag) 
+        {
+            menuLevelFlag = 0;
+            if (clkFlg) 
             {
                 clkFlg = 0;
                 displayClock();
-                if (button1)
+                if (button1) 
                 {
-                    clockFlag = 0;   
-                } 
+                    clockFlag = 0;
                 }
-            }          
-               
-        
-     }   
+            }
+        }
+
+        sleep();
+    }
 }
 
 void introMessage()
-    {
-        //introducto text a
-        lcd.drawLine(4, 0, 79, 0, 1);
-        lcd.printString("Ultrasonic",13,1);
-        lcd.printString("Distance",18,2);
-        lcd.printString("Sensor",23,3);
-        lcd.drawLine(4, 45, 79, 45, 1);
-        
-        wait(1.3);
-        lcd.clear();
-        
-        //introductory text b
-        lcd.drawLine(4, 0, 79, 0, 1);
-        lcd.printString("University",13,1);
-        lcd.printString("Of",35,2);
-        lcd.printString("Leeds",26,3);
-        lcd.drawLine(4, 45, 79, 45, 1);
-        
-        wait(1.3);
-        lcd.clear();
-        
-        //introductory text c
-        lcd.drawLine(4, 0, 79, 0, 1);
-        lcd.printString("Ibrahim Adam",5,1);
-        lcd.printString("200789110",10,2);
-        lcd.printString("Yr2 - 2015",8,3);
-        lcd.drawLine(4, 45, 79, 45, 1);
-        
-        wait(1.3);
-        lcd.clear();
-        
-        //introductory text c
-        lcd.drawLine(4, 0, 79, 0, 1);
-        lcd.printString("Elec 2645",15,1);
-        lcd.printString("Embedded SYS",8,2);
-        lcd.printString("Project",21,3);
-        lcd.drawLine(4, 45, 79, 45, 1);
-        
-        msgFlag = 1;
-        
-        wait(1.3);
-        lcd.clear();
-    }
-    
-    void mainMenu()
-    {
-           
-    }    
+{
+    //introducto text a
+    lcd.drawLine(4, 0, 79, 0, 1);
+    lcd.printString("Ultrasonic",13,1);
+    lcd.printString("Distance",18,2);
+    lcd.printString("Sensor",23,3);
+    lcd.drawLine(4, 45, 79, 45, 1);
+
+    wait(1.3);
+    lcd.clear();
+
+    //introductory text b
+    lcd.drawLine(4, 0, 79, 0, 1);
+    lcd.printString("University",13,1);
+    lcd.printString("Of",35,2);
+    lcd.printString("Leeds",26,3);
+    lcd.drawLine(4, 45, 79, 45, 1);
+
+    wait(1.3);
+    lcd.clear();
+
+    //introductory text c
+    lcd.drawLine(4, 0, 79, 0, 1);
+    lcd.printString("Ibrahim Adam",5,1);
+    lcd.printString("200789110",10,2);
+    lcd.printString("Yr2 - 2015",8,3);
+    lcd.drawLine(4, 45, 79, 45, 1);
+
+    wait(1.3);
+    lcd.clear();
+
+    //introductory text c
+    lcd.drawLine(4, 0, 79, 0, 1);
+    lcd.printString("Elec 2645",15,1);
+    lcd.printString("Embedded SYS",8,2);
+    lcd.printString("Project",21,3);
+    lcd.drawLine(4, 45, 79, 45, 1);
+
+    msgFlag = 1;
+
+    wait(1.3);
+    lcd.clear();
+
+    startClockMsg();
+}
 
-    void endMessage()
-    {
-        //end text
-        lcd.drawLine(4, 0, 79, 0, 1);
-        lcd.printString("Thank You",12,1);
-        lcd.printString("Goodbye",19,2);
-        
-        lcd.drawLine(4, 45, 79, 45, 1);
-        
-        wait(1);
-        lcd.clear();   
-    }    
-    
-    void errorHandler()
-    {
-        //end text
-        lcd.drawLine(4, 0, 79, 0, 1);
-        lcd.printString("Error Help",12,1);
-      
-        
-        wait(0.2);
-        lcd.clear();   
-    }    
+void errorHandler()
+{
+    //end text
+    lcd.drawLine(4, 0, 79, 0, 1);
+    lcd.printString("Error Help",12,1);
+
+
+    wait(0.2);
+    lcd.clear();
+}
+
+void adjustBrightness(float x)
+{
+    if ((x >= 0) && (x < 0.2)) {
+
+        lcd.setBrightness(0);
+        lcd.printString("Light 0%",13,1);
+    }
+
+    if ((x >= 0.2) && (x < 0.4)) {
+
+        lcd.setBrightness(0.25);
+        lcd.printString("Light 25%",13,1);
+    }
+
+    if ((x >= 0.4) && (x < 0.6)) {
+
+        lcd.setBrightness(0.5);
+        lcd.printString("Light 50%",13,1);
+    }
+
+    if ((x >= 0.6) && (x < 0.8)) {
+
+        lcd.setBrightness(0.75);
+        lcd.printString("Light 75%",13,1);
+
+    }
+    if (x >= 0.8) {
+
+        lcd.setBrightness(1);
+        lcd.printString("Light 100%",13,1);
+    }
+    lcd.clear();
     
-    void adjustBrightness(float x)
-    {
-        if ((x >= 0) && (x < 0.2))
-        {   
-               
-            lcd.setBrightness(0);
-            lcd.printString("Light 0%",13,1);    
-        }
-        
-        if ((x >= 0.2) && (x < 0.4))
-        {
-               
-            lcd.setBrightness(0.25);
-            lcd.printString("Light 25%",13,1);
-        }
-        
-        if ((x >= 0.4) && (x < 0.6))
-        {
-               
-            lcd.setBrightness(0.5);
-            lcd.printString("Light 50%",13,1);  
-        }
-        
-        if ((x >= 0.6) && (x < 0.8))
-        {
-               
-            lcd.setBrightness(0.75);
-            lcd.printString("Light 75%",13,1); 
-               
-        }
-        if (x >= 0.8) 
-        {
-               
-            lcd.setBrightness(1);
-            lcd.printString("Light 100%",13,1);   
-        }
-          lcd.clear();  
-    }   
-    
+}
+
 void menu()
-{       
-    lcd.clear();             
+{
+    lcd.clear();
     lcd.printString("-MAIN MENU-",9,0);
     lcd.drawLine(4, 7, 79, 7, 1);
     lcd.printString("Dist read",15,1);
-    lcd.printString("Save data",15,2);
+    lcd.printString("Data",15,2);
     lcd.printString("brightness",15,3);
-    lcd.printString("SYS test",15,4);                               
-}  
+    lcd.printString("SYS Clock",15,4);
+}
 
 void cursorSelect(int xDimm, int xLimm, int yDimm, int yLimm)
 {
     int i,j;
-             
+
     //clear selecton column
-    for (i = 1; i < 6; i++)
+    for (i = 1; i < 6; i++) 
     {
-        for(j = 1; j < 46; j++)
+        for(j = 1; j < 46; j++) 
         {
             lcd.clearPixel(i,j);
-        }   
-    }    
-    
+        }
+    }
+
     //particular selection
-    for (i = xDimm; i < xLimm; i++)
+    for (i = xDimm; i < xLimm; i++) 
     {
-        for(j = yDimm; j < yLimm; j++)
+        for(j = yDimm; j < yLimm; j++) 
         {
-            lcd.setPixel(i,j);   
-        }       
-    } 
-    lcd.refresh();          
-}         
+            lcd.setPixel(i,j);
+        }
+    }
+    lcd.refresh();
+}
 
 void demo()
 {
     // these are default settings so not strictly needed
     lcd.normalMode();      // normal colour mode
-        lcd.setBrightness(0.5); // put LED backlight on 50%
+    lcd.setBrightness(0.5); // put LED backlight on 50%
 
-        // can directly print strings at specified co-ordinates
-        lcd.printString("Hello, World!",0,0);
+    // can directly print strings at specified co-ordinates
+    lcd.printString("Hello, World!",0,0);
 
-        char buffer[14];  // each character is 6 pixels wide, screen is 84 pixels (84/6 = 14)
-        // so can display a string of a maximum 14 characters in length
-        // or create formatted strings - ensure they aren't more than 14 characters long
-        int temperature = 27;
-        int length = sprintf(buffer,"T = %2d C",temperature); // print formatted data to buffer
-        // it is important the format specifier ensures the length will fit in the buffer
-        if (length <= 14)  // if string will fit on display
-            lcd.printString(buffer,0,1);           // display on screen
+    char buffer[14];  // each character is 6 pixels wide, screen is 84 pixels (84/6 = 14)
+    // so can display a string of a maximum 14 characters in length
+    // or create formatted strings - ensure they aren't more than 14 characters long
+    int temperature = 27;
+    int length = sprintf(buffer,"T = %2d C",temperature); // print formatted data to buffer
+    // it is important the format specifier ensures the length will fit in the buffer
+    if (length <= 14)  // if string will fit on display
+        lcd.printString(buffer,0,1);           // display on screen
 
-        float pressure = 1012.3;  // same idea with floats
-        length = sprintf(buffer,"P = %.2f mb",pressure);
-        if (length <= 14)
-            lcd.printString(buffer,0,2);
+    float pressure = 1012.3;  // same idea with floats
+    length = sprintf(buffer,"P = %.2f mb",pressure);
+    if (length <= 14)
+        lcd.printString(buffer,0,2);
 
-        // can also print individual characters at specified place
-        lcd.printChar('X',5,3);
+    // can also print individual characters at specified place
+    lcd.printChar('X',5,3);
 
-        // draw a line across the display at y = 40 pixels (origin top-left)
-        for (int i = 0; i < WIDTH; i++) 
-        {
-            lcd.setPixel(i,40);
-        }
-        // need to refresh display after setting pixels
-        lcd.refresh();
+    // draw a line across the display at y = 40 pixels (origin top-left)
+    for (int i = 0; i < WIDTH; i++) 
+    {
+        lcd.setPixel(i,40);
+    }
+    // need to refresh display after setting pixels
+    lcd.refresh();
 
-        // can also check status of pixels using getPixel(x,y)
+    // can also check status of pixels using getPixel(x,y)
 
-        wait(5.0);
-        lcd.clear();            // clear display
-        lcd.inverseMode();      // invert colours
-        lcd.setBrightness(1.0); // put LED backlight on full
+    wait(5.0);
+    lcd.clear();            // clear display
+    lcd.inverseMode();      // invert colours
+    lcd.setBrightness(1.0); // put LED backlight on full
 
-        float array[84];
+    float array[84];
 
-        for (int i = 0; i < 84; i++) 
-        {
-            array[i] = 0.5 + 0.5*sin(i*2*3.14/84);
-        }
+    for (int i = 0; i < 84; i++) 
+    {
+        array[i] = 0.5 + 0.5*sin(i*2*3.14/84);
+    }
 
-        // can also plot graphs - 84 elements only
-        // values must be in range 0.0 - 1.0
-        lcd.plotArray(array);
-        wait(5.0);
-        lcd.clear();
-        lcd.normalMode();      // normal colour mode back
-        lcd.setBrightness(0.5); // put LED backlight on 50%
+    // can also plot graphs - 84 elements only
+    // values must be in range 0.0 - 1.0
+    lcd.plotArray(array);
+    wait(5.0);
+    lcd.clear();
+    lcd.normalMode();      // normal colour mode back
+    lcd.setBrightness(0.5); // put LED backlight on 50%
 
-        // example of drawing lines
-        for (int x = 0; x < WIDTH ; x+=10) 
-        {
-            // x0,y0,x1,y1,type 0-white,1-black,2-dotted
-            lcd.drawLine(0,0,x,HEIGHT,2);
-        }
+    // example of drawing lines
+    for (int x = 0; x < WIDTH ; x+=10) 
+    {
+        // x0,y0,x1,y1,type 0-white,1-black,2-dotted
+        lcd.drawLine(0,0,x,HEIGHT,2);
+    }
 
-        wait(5.0);
-        lcd.clear();
+    wait(5.0);
+    lcd.clear();
 
-        // example of how to draw circles
-        lcd.drawCircle(WIDTH/2,HEIGHT/2,20,1);  // x,y,radius,black fill
-        lcd.drawCircle(WIDTH/2,HEIGHT/2,10,2);  // x,y,radius,white fill
-        lcd.drawCircle(WIDTH/2,HEIGHT/2,30,0);  // x,y,radius,transparent with outline
+    // example of how to draw circles
+    lcd.drawCircle(WIDTH/2,HEIGHT/2,20,1);  // x,y,radius,black fill
+    lcd.drawCircle(WIDTH/2,HEIGHT/2,10,2);  // x,y,radius,white fill
+    lcd.drawCircle(WIDTH/2,HEIGHT/2,30,0);  // x,y,radius,transparent with outline
 
-        wait(5.0);
-        lcd.clear();
+    wait(5.0);
+    lcd.clear();
 
-        // example of how to draw rectangles
-        //          origin x,y,width,height,type
-        lcd.drawRect(10,10,50,30,1);  // filled black rectangle
-        lcd.drawRect(15,15,20,10,2);  // filled white rectange (no outline)
-        lcd.drawRect(2,2,70,40,0);    // transparent, just outline
+    // example of how to draw rectangles
+    //          origin x,y,width,height,type
+    lcd.drawRect(10,10,50,30,1);  // filled black rectangle
+    lcd.drawRect(15,15,20,10,2);  // filled white rectange (no outline)
+    lcd.drawRect(2,2,70,40,0);    // transparent, just outline
 
-        wait(5.0);
-        lcd.clear();       
-}     
+    wait(5.0);
+    lcd.clear();
+}
 
 //Interrupt service routines
 //===========================
 void button1Pressed()
 {
     button1Flag = 1;
-}       
+}
 void button2Pressed()
 {
-    button2Flag = 1;   
-}    
+    button2Flag = 1;
+}
 void button3Pressed()
 {
-    button3Flag = 1;    
-}   
+    button3Flag = 1;
+}
 
-//beep sound based on beeper frequency and beeper time 
+//beep sound based on beeper frequency and beeper time
 //entered respectively
 void beeper(float beeperFreq, float beeperTime)
 {
-    beep1.beep(beeperFreq,beeperTime);       
-} 
-     
+    beep1.beep(beeperFreq,beeperTime);
+}
+
 void menuLevel(float lvl)
 {
-    if ((lvl >= 0) && (lvl < 0.25))
-    {   
+    if ((lvl >= 0) && (lvl < 0.25)) 
+    {
         cursorSelect(1, 6, 9, 14);
-        if (button2)
-        {   
+        if (button2) 
+        {
             distFlag = 1;
-            brightFlag = 0; 
+            brightFlag = 0;
             clockFlag = 0;
-        }  
-            
+        }
+
     }
     if ((lvl >= 0.25) && (lvl < 0.5))
     {
         cursorSelect(1, 6, 17, 22);
     }
-    if ((lvl >= 0.5) && (lvl < 0.75))
+    
+    if ((lvl >= 0.5) && (lvl < 0.75)) 
     {
-        cursorSelect(1, 6, 25, 30); 
-        if (button2)
+        cursorSelect(1, 6, 25, 30);
+        if (button2) 
         {
             brightFlag = 1;
-            distFlag =0; 
+            distFlag =0;
             clockFlag = 0;
-        }  
-          
+        }
+
     }
-    if ((lvl >= 0.75) && (lvl <= 1))
+    if ((lvl >= 0.75) && (lvl <= 1)) 
     {
         cursorSelect(1, 6, 33, 38);
-        if (button2)
+        if (button2) 
         {
             clockFlag = 1;
             distFlag = 0;
-            brightFlag = 0;     
-        }          
+            brightFlag = 0;
+        }
     }
-       
-                                   
-}    
-void clockA()
-{
-    lcd.printString("Set clock",35,0);       
-} 
+
+
+}
+
 void distMeasure()
 {
     lcd.clear();
     lcd.printString("Measure",15,0);
-    
+
+
     // read sensor distance in cm and print over serial port
     char buffer[14];  // each character is 6 pixels wide, screen is 84 pixels (84/6 = 14)
-        // so can display a string of a maximum 14 characters in length
-        // or create formatted strings - ensure they aren't more than 14 characters long
-    int distance = sensor.getDistanceCm();
+    // so can display a string of a maximum 14 characters in length
+    // or create formatted strings - ensure they aren't more than 14 characters long
+    
+
+    distance = sensor.getDistanceCm();
+    soundDist = distance * 2;
+
+    soundSpeed = 34029;
+    speedTime = soundDist/soundSpeed;
+    Mspeed = distance/speedTime;
+
+    //====================================================================================
+    /*
+      float Avg;
+      float k;
+      float array[10];
+      for (int a = 0;a<10;a++)
+      {
+          array[a] = ;
+          k = k + array[a];
+      }
+      Avg = k/10;
+
+       */
+    //====================================================================================
+
     int length = sprintf(buffer,"Dist = %2d cm",distance); // print formatted data to buffer
-        // it is important the format specifier ensures the length will fit in the buffer
-    if (length <= 14)  // if string will fit on display
-    {
+    // it is important the format specifier ensures the length will fit in the buffer
+
+    
+
+    if (length <= 14) { // if string will fit on display
         lcd.printString(buffer,0,1);           // display on screen
     }
+
     
-   // serial.printf("Distance = %d cm\n",distance);
+
+    serial.printf("Distance = %d cm\n",distance);
     serial.printf("\n\n\r %s, %0.2f \n",buffer, length);
-    
-}  
-  
+
+   
+
+}
+
 void saveData()
 {
     lcd.printString("Save data",36,0);
-}      
-void systemTest()
+}
+void sysClock()
 {
     lcd.printString("System test",30,0);
-}    
+}
 void startMessage()
 {
     lcd.printString("Press",25,2);
-    lcd.printString("Start Button",8,3); 
+    lcd.printString("Start Button",8,3);
     //displayClock();
-           
-} 
+
+}
 void displayClock()
 {
     //timer2.attach(&timer2Expired,1.0);
     //serial.attach(&serialISR); // attach serial ISR
     lcd.clear();
-    
+
     lcd.printString("-SYS CLOCK-",9,0);
-    
-    if (timer2Flag)
+
+    if (timer2Flag) {
+        getCurrentTime();
+    }
+
+    if (setTimeFlag) {
+        chkUpdateTime();
+    }
+
+    lcd.printString(buffer2,4,2);           // display on screen
+}
+
+void buzzerRange()
+{
+
     {
-        getCurrentTime();   
-    }    
-        
-    if (setTimeFlag) 
+        beeper(400,distance);
+    }
+}
+
+
+void startClockMsg()
+{
+    if(time(NULL)) {
+        displayClock();
+        lcd.printString("Set Clock",15,0);
+        wait(0.1);
+        clearRow();
+        wait(0.1);
+        lcd.printString("Set Clock",15,0);
+        wait(0.1);
+        clearRow();
+        wait(0.1);
+        lcd.printString("Set Clock",15,0);
+        wait(0.1);
+        clearRow();
+        wait(0.3);
+        lcd.printString("Set Clock",15,0);
+        wait(0.1);
+        clearRow();
+        wait(0.1);
+        lcd.printString("Set Clock",15,0);
+        wait(1);
+        lcd.clear();
+    } else {
+        displayClock();
+        lcd.printString("Clock Set",15,0);
+        wait(1.3);
+    }
+}
+
+void clearRow()
+{
+    int i,j;
+    //clear selecton column
+    for(j = 0; j < 7; j++)
+
     {
-        chkUpdateTime();         
-    }  
-    
-    lcd.printString(buffer2,4,2);           // display on screen
-}           
\ No newline at end of file
+
+        for (i = 0; i < 83; i++) 
+        {
+            lcd.clearPixel(i,j);
+        }
+    }
+    lcd.refresh();
+    wait(0.2);
+}
+
+void snapShot()
+{
+    Timer A;
+    A.start();
+    if (A.read_ms()==3000) 
+    {
+        beeper(1000, 0.1);
+        beeper(1000, 0.1);
+        beeper(1000, 0.1);
+        beeper(1000, 0.5);
+
+        if (button3) 
+        {
+            beeper(1000,0.5);
+
+        }
+    }
+
+}
+