Revision 3:f9378196889c, committed 2018-12-07

Comitter:

coryburke

Date:

Fri Dec 07 21:26:00 2018 +0000

Parent:

2:30db7d0108c1

Commit message:

MICRO_FINAL_PRJ_CBURKE

Changed in this revision

--- a/main.cpp	Fri Dec 07 07:08:02 2018 +0000
+++ b/main.cpp	Fri Dec 07 21:26:00 2018 +0000
@@ -1,13 +1,16 @@
+
   #include "mbed.h"
   #include "Keypad.h"
 #include "TextLCD.h"
 
 //pin selection for keypad matrix
 
- Keypad kpad(PTE2,PTE3,PTE4,PTE5,PTB8,PTB9,PTB10,PTB11);
+ Keypad kpad(PTE2,PTE3,PTE4,PTE5,PTB8,PTB9,PTB10,PTB11); 
  
+// all digital inputs
+
  /*
-col1, col2, col3, col4, row1, row2, row3, row4
+Keypad kpad(col1, col2, col3, col4, row1, row2, row3, row4)
 */
 
 // serial connection to pc for debugging and troubleshooting
@@ -15,23 +18,25 @@
  
 //define passwords of for individual users
 const uint32_t number_of_chars = 5; //password length
-const char pass_user1[number_of_chars] = {'1','2','3','4','*'}; //
-const char pass_user2[number_of_chars] = {'1','4','7','4','*'}; //
-const char pass_user3[number_of_chars] = {'0','0','0','0','0'}; //
-const char pass_user4[number_of_chars] = {'6','5','4','C','*'}; //
-const char pass_user5[number_of_chars] = {'A','A','A','A','A'}; //
+const char pass_user1[number_of_chars] = {'1','2','3','4','*'}; //password user 1
+const char pass_user2[number_of_chars] = {'1','4','7','4','*'}; // password user 2
+const char pass_user3[number_of_chars] = {'0','0','0','0','0'}; // password user 3
+const char pass_user4[number_of_chars] = {'6','5','4','C','*'}; // password user 4
+const char pass_user5[number_of_chars] = {'A','A','A','A','A'}; // password user 5
 
 //choose the character length of valid passwords
-char enterd_pass[number_of_chars] = {' ',' ',' ',' ',' '};
+char enterd_pass[number_of_chars] = {' ',' ',' ',' ',' '}; 
+
+// each (‘ ‘) represents a location for inputs from keypad
 
 
 //initialize outputs
-DigitalOut led_red(LED_RED);
-DigitalOut led_green(LED_GREEN);
-DigitalOut active_buzzer(PTA4);
-DigitalOut output1(PTA5);
-  //Buzzer on pin PTD4
-
+DigitalOut led_red(LED_RED);       //red led turned on                                    
+DigitalOut led_green(LED_GREEN);   //green led turned on     
+DigitalOut output2(PTA4);          // normally off digital output   
+DigitalOut output1(PTA5);          // normally on  digital output
+  
+  
 PwmOut beep(PTD4); // buzzer
 
 int main()
@@ -43,41 +48,67 @@
     int user_index3=0;
     int user_index4=0;
     int user_index5=0;
-    int j=0;
-    int flag=0;
+    int j=0;        // incorrect entry counter
+    int flag=0;         //lockout flag
     
 printf("\n \n PASSWORD REQUIRED \n \n ");
 
-    int released =1;
+    int released =1;    // variable to detect if a key is being  pressed on keypad
   
-    output1=1;
+    output1=0;      // digital output
     printf("\r\n Password Entered:");
-    led_green = 0;
-    led_red = 0;
-    active_buzzer = 0;
+    led_green = 0;  //LED green on
+    led_red = 0;        //LED red on
+//red and green led turned on to create yellow
+
+    output2 = 1;  // buzzer alarm off
+
+//buzzer period select,                 
+    beep.period(0.001); // determines pitch and sound frequency
+    
+    wait(0.001);    //off time
+
+
+
 
-//buzzer period select
-    beep.period(0.001);
-    
-    wait(0.001);
+
+
+
+
+
+
+
+
 
-    
+
+
+
+
+////beginning of do-while loop to activate system lockout after too many login attemps   
 do{
+
     while(1) {
+
         led_green = 0;
         led_red = 0;
         printf("Enter Password:");
         
         // Reading the password characters
         for(i=0; i<number_of_chars; i++) {
-            key = kpad.ReadKey();
-        
-    if(key == '\0')
-             released = 1;                       //set the flag when all keys are released
-           if((key != '\0') && (released == 1)) {  //if a key is pressed AND previous key was released
-        enterd_pass[i]=key; 
-        printf("%c ",enterd_pass[i]);           
-              released = 0;                       //clear the flag to indicate that key is still pressed
+
+            key = kpad.ReadKey();       // for loop reads each character entered up to 
+                                        // number of chars in a password
+
+
+    if(key == '\0')                          // if no character is being typed
+             released = 1;                   //set the flag when all keys are released
+
+      if((key != '\0') && (released == 1))   //if key pressed AND previous key released
+       { 
+
+       enterd_pass[i]=key;      
+       printf("%c ",enterd_pass[i]);           
+       released = 0;              //flag to indicate that key is pressed
               }
 else
 i--;
@@ -87,14 +118,15 @@
         }
         
         wait(0.003);
-        
-        // comparing password entered via keypad to valid user passwords
+
+        //// prompts entered passcode and is compared to preset user passcodes 
+        //// comparing password entered via keypad to valid user passwords
 
       /////////    user 1    ///////////////
         for(i=0; i<number_of_chars; i++) {
             if( enterd_pass[i] == pass_user1[i] ) {
                 user_index1 = 1;
-                active_buzzer = 0;
+               output2 = 1;
             } else {
                 user_index1 = 0;
                 break;
@@ -140,86 +172,94 @@
             }
         }
         
+        // if passcode matches a user passcode
+        // continue to grant user accress and activate outputs
        
-////// correct password prompts and outputs
-        if( (1 == user_index1)||(2 == user_index2)||(3 == user_index3)||(4 == user_index4)||(5 == user_index5) ) {
-            printf("\r\n Passcode recognized \n \n ");
-            led_red = 1;
-            active_buzzer = 0;
+    ////// correct password prompts and outputs  //////
+
+        if( (1 == user_index1)||(2 == user_index2)||(3 == user_index3)||(4 == user_index4)||(5 == user_index5) )  
+
+// if user index is between 1 and 5 and not 0
+{
+            printf("\r\n Passcode recognized \n \n ");          // correct passcode prompt
+            led_red = 1;                           // red led has 0V, leaving green led on
+            output2 = 0;                     // activates short buzzer
+            output1=1;                              // activates short buzzer 
             printf("\r\n Welcome Cory Burke \n \n" );
            
-          output1=0;
+          output1=1;                               // output 1 activated
 
             if(1 == user_index1) {
-                printf("\r Access granted User 1 \n \n");
-            led_red = 1;
-            active_buzzer = 0;
+                printf("\r Access granted User 1 \n \n");              // User 1’s name can be entered her      
+            led_red = 1;                        //red led turned off
+            output2 = 1;                  // activates short buzzer 
             printf("\r\n Welcome User 1 \n" );
             printf("\r User numer: 1 \n");
             output1=0;
             }
             if(2 == user_index2) {
                 printf("\r\n Access granted: User 2 \n \n ");
-            led_red = 1;
-            active_buzzer = 0;
+            led_red = 1;                        //red led turned off
+            output2 = 1;                  // activates short buzzer 
             printf("\r\n Welcome User 2 \n" );
             printf("\r User numer: 2 \n");
-            output1=0;
+            output1=0;                      // output1 turned off
             }
             if(3 == user_index3) {
                 printf("\r\n Access granted: User 3  \n ");
-            led_red = 1;
-            active_buzzer = 0;
+            led_red = 1;                        //red led turned off
+            output2 = 1;                  // activates short buzzer 
             printf("\r\n Welcome User 3 \n" );
             printf("\r User numer: 3 \n ");
-            output1=0;
+            output1=0;                      // output1 turned off
             }
             if(4 == user_index4) {
                 printf("\r\n Access granted: User 4   \n ");
-            led_red = 1;
-            active_buzzer = 0;
+            led_red = 1;                        //red led turned off
+            output2 = 1;                  // activates short buzzer 
             printf("\r\n Welcome User 4 \n" );
             printf("\r User numer: 4 \n");
-            output1=0;
+            output1=0;                      // output1 turned off
             }
             if(5 == user_index5) {
                 printf("\r Access granted: User 5 \n ");
-            led_red = 1;
-            active_buzzer = 0;
+            led_red = 1;                        //red led turned off
+            output2 = 1;                  // activates short buzzer 
             printf("\r\n Welcome User 5 \n " );
             printf("\r User numer: 5 \n");
-            output1=0;
+            output1=0;                      // output1 turned off
             }
 
             wait(1);
-            active_buzzer = 0;
-            beep = 25.0/100.0;
-            led_red = 0;
-            led_green=0;
-            output1=1;
+            output2 = 0;
+            beep = 25.0/100.0;          // beep duty cycle to control volume and pitch
+            led_red = 0;                //  
+            led_green=0;                //red and green led turned on to create yellow
+            output1=1;              // output1 turned off
             wait(1);
       
 
 
         }
-// indicates that an incorrect passwords was entered with leds and buzzer
+///// when an incorrect password was entered 
         else {
             printf("\r\n \n Incorrect password \n \n Access denied!  \n \n  ");
-            led_green = 1;
-            led_red=0;
+            led_green = 1;              //green led turned off
+            led_red=0;              //red led turned on
             wait(1);
-            active_buzzer = 1;
+            output2 = 0;          // buzzer off
              beep = 50.0/100.0;
-            j=j+1;
-            
+            j=j+1;                  //  records access attempt
+            //// too many attempts made
+
             if(j==4){printf("\r\n \n TOO MANT ATTEMPTS, SYSTEM LOCKOUT  \n \n  ");
-            led_green = 1;
-            led_red=0;
-            flag=1;
+            led_green = 1;      //green led turned off
+            led_red=0;      //red led turned on
+            flag=1;         //lockout flag activated
             wait(1);
-            active_buzzer = 1;
-             beep = 50.0/100.0;
-               output1=1;
+            output2 = 1;       // long buzzer when system lockout occurs
+             beep = 50.0/100.0; 
+               output1=0;       // output1 turned on
             wait(1);
              output1=0;
             wait(1);
@@ -228,26 +268,58 @@
              output1=0;
             wait(1);
              output1=1;
-            wait(1);   
+            wait(1);    //long buzzer ends
                                                                             }
             
                                                                     }
         
-        beep = 0.0/100.0;
-        led_green = 0;
-            led_red=0;
+        beep = 0.0/100.0;   // buzzer turned off by duty cycle = 0
+        led_green = 0;      //green led turned on
+            led_red=0;      //red led turned on
+                            //red and green led turned on to create yellow
+        output2 = 0;                  
+        output1=1; 
+
     }
     
     
     
     
     
-    } while(flag==0);
+ } while(flag==0); ////end of do-while loop, continues until flag =1 from too many attempts 
+                
     
     
-    
-    
+    ////end of program
     
     
 }
 
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