Diff: main.cpp

Revision:

17:02676e9bbc73

Parent:

16:af15244242c2

--- a/main.cpp	Fri Feb 04 16:29:33 2022 +0000
+++ b/main.cpp	Fri Feb 04 18:30:13 2022 +0000
@@ -11,8 +11,8 @@
 * and back buttons it is sent to the specific start and back functions which sets
 * the flags which are then used in other functions.
 *
-* the Ultrasonic.startUpdates() is where the ultrasonic sensor is told to start measuring
-* the distances.
+* the Ultrasonic.startUpdates() is where the ultrasonic sensor is told to start 
+* measuring the distances.
 * the joystick and lcd are then initialised and the main menu function is then
 * called.
 *
@@ -58,7 +58,7 @@
 /***************************************************************************//**
 *
 * this function is the main menu for the program, it is called at the start and 
-* depending on what string is selected, clicking the start uton will send the
+* depending on what string is selected, clicking the start button will send the
 * user to the specified function.
 *
 *******************************************************************************/      
@@ -68,13 +68,13 @@
     // printf("main menu");
     
     lcd.clear();
-    Start_flag = 0;
-    int select = 0;
+    Start_flag = 0; // make sure this is set to 0 to begin with so that it doesnt operate erroneously
+    int select = 0; // always want the main menu to start on the same value on reset/ returning from a different screen
     LEDS = 63; // 63 on the bus output sets all LEDs to off
 
     while (1) {
         
-    Direction d = joystick.get_direction();   
+    Direction d = joystick.get_direction();  
     // printf("Direction = %i\n",d);
     
         switch(select) {
@@ -137,7 +137,11 @@
 
 /***************************************************************************//**
 *
-* this function is for sensing the object
+* this function is for sensing the object, a switch statement is utilised here 
+* just as it was in the main menu but here it is used for indicating the six 
+* seperate readings that are to be taken.
+* the start button is used to take the measuement and the R button is used to
+* rotate the object
 *
 *******************************************************************************/ 
 
@@ -150,8 +154,8 @@
     
     while(1)
     {
-    LEDS = fsm[state];  // output current state
-     printf("state = %d\r\n",state);
+    LEDS = fsm[state];  // this sets the LED bus output current state of the FSM
+     //printf("state = %d\r\n",state);
     
     // check which state we are in and see which the next state should be
     switch(state) {
@@ -327,7 +331,10 @@
 
 /***************************************************************************//**
 *
-* this is where the magic happens
+* these functions are called when the start button is pressed oin the sense object
+* function, the purpose of these is to store the measured values for comparison
+* and to make a buzzer sound to indicate to the user that the value has been
+* measured
 *
 *******************************************************************************/
 
@@ -341,7 +348,7 @@
         wait(0.5);
         buzzer.beep(0,0);
         
-        printf("distance at sense 1 = %d\r\n", Distance1);
+        //printf("distance at sense 1 = %d\r\n", Distance1);
 
         }
 
@@ -355,7 +362,7 @@
         wait(0.5);
         buzzer.beep(0,0);
 
-        printf("distance at sense 2 = %d\r\n", Distance2);
+        //printf("distance at sense 2 = %d\r\n", Distance2);
 
         }
         
@@ -369,7 +376,7 @@
         wait(0.5);
         buzzer.beep(0,0);
 
-        printf("distance at sense 3 = %d\r\n", Distance3);
+        //printf("distance at sense 3 = %d\r\n", Distance3);
   
         }
         
@@ -383,7 +390,7 @@
         wait(0.5);
         buzzer.beep(0,0);
 
-        printf("distance at sense 4 = %d\r\n", Distance4);
+        //printf("distance at sense 4 = %d\r\n", Distance4);
      
         }
         
@@ -397,7 +404,7 @@
         wait(0.5);
         buzzer.beep(0,0);
         
-        printf("distance at sense 5 = %d\r\n", Distance5);
+        //printf("distance at sense 5 = %d\r\n", Distance5);
      
         }
         
@@ -411,10 +418,20 @@
         wait(0.5);
         buzzer.beep(0,0);
         
-        printf("distance at sense 6 = %d\r\n", Distance6);
+        //printf("distance at sense 6 = %d\r\n", Distance6);
  
         }
-        
+
+/***************************************************************************//**
+*
+* the object detection function is where the comparison between the measured
+* values and the defined object arrays occurs, if the measured values match the
+* arrays then the program will see it as an object found and will display this on
+* the screen, otherwise it will ask the user to try again. a +/- 5mm deadband has
+* been added to allow for minor erros in the measured values.
+*
+*******************************************************************************/
+
 void object_detection(){
             
             lcd.clear();
@@ -423,25 +440,25 @@
             //printf("glass[0] = %d\n", glass[0]);
             //printf("glass[6] = %d\n", glass[6]);
             if (abs(Distance1 - glass[0]) <= 5 and abs(Distance2 - glass[1]) <= 5 and abs(Distance3 - glass[2]) <= 5 and abs(Distance4 - glass[3]) <= 5 and abs(Distance5 - glass[4]) <= 5 and abs(Distance6 - glass[5]) <= 5){       
-            printf("glass\n");
+            //printf("glass\n");
             lcd.printString(" Object Found!",0,1);
             lcd.printString("  Pint Glass",0,3);
             lcd.refresh();}
             
             else if (abs(Distance1 - firestick_box[0]) <= 5 and abs(Distance2 - firestick_box[1]) <= 5 and abs(Distance3 - firestick_box[2]) <= 5 and abs(Distance4 - firestick_box[3]) <= 5 and abs(Distance5 - firestick_box[4]) <= 5 and abs(Distance6 - firestick_box[5]) <= 5){       
-            printf("Firestick Box\n");
+            //printf("Firestick Box\n");
             lcd.printString(" Object Found!",0,1);
             lcd.printString(" Firestick Box",0,3);
             lcd.refresh();}
             
             else if (abs(Distance1 - Disaronno_bottle[0]) <= 5 and abs(Distance2 - Disaronno_bottle[1]) <= 5 and abs(Distance3 - Disaronno_bottle[2]) <= 5 and abs(Distance4 - Disaronno_bottle[3]) <= 5 and abs(Distance5 - Disaronno_bottle[4]) <= 5 and abs(Distance6 - Disaronno_bottle[5]) <= 5){       
-            printf("Firestick Box\n");
+            //printf("Disaronno Bottle\n");
             lcd.printString(" Object Found!",0,1);
-            lcd.printString(" Firestick Box",0,3);
+            lcd.printString("  Disaronno!",0,3);
             lcd.refresh();}
                      
             else{
-            printf("nothing\n");
+            //printf("nothing\n");
             lcd.printString("  No Object!",0,1);
             lcd.printString("  Please Try",0,3);
             lcd.printString("Again",24,4);