main.cpp

00001 
00002   #include "mbed.h"
00003   #include "Keypad.h"
00004 #include "TextLCD.h"
00005 
00006 //pin selection for keypad matrix
00007 
00008  Keypad kpad(PTE2,PTE3,PTE4,PTE5,PTB8,PTB9,PTB10,PTB11); 
00009  
00010 // all digital inputs
00011 
00012  /*
00013 Keypad kpad(col1, col2, col3, col4, row1, row2, row3, row4)
00014 */
00015 
00016 // serial connection to pc for debugging and troubleshooting
00017  Serial pc(USBTX, USBRX);
00018  
00019 //define passwords of for individual users
00020 const uint32_t number_of_chars = 5; //password length
00021 const char pass_user1[number_of_chars] = {'1','2','3','4','*'}; //password user 1
00022 const char pass_user2[number_of_chars] = {'1','4','7','4','*'}; // password user 2
00023 const char pass_user3[number_of_chars] = {'0','0','0','0','0'}; // password user 3
00024 const char pass_user4[number_of_chars] = {'6','5','4','C','*'}; // password user 4
00025 const char pass_user5[number_of_chars] = {'A','A','A','A','A'}; // password user 5
00026 
00027 //choose the character length of valid passwords
00028 char enterd_pass[number_of_chars] = {' ',' ',' ',' ',' '}; 
00029 
00030 // each (‘ ‘) represents a location for inputs from keypad
00031 
00032 
00033 //initialize outputs
00034 DigitalOut led_red(LED_RED);       //red led turned on                                    
00035 DigitalOut led_green(LED_GREEN);   //green led turned on     
00036 DigitalOut output2(PTA4);          // normally off digital output   
00037 DigitalOut output1(PTA5);          // normally on  digital output
00038   
00039   
00040 PwmOut beep(PTD4); // buzzer
00041 
00042 int main()
00043 {
00044     char key;
00045     int i;
00046    int user_index1=0;
00047     int user_index2=0;
00048     int user_index3=0;
00049     int user_index4=0;
00050     int user_index5=0;
00051     int j=0;        // incorrect entry counter
00052     int flag=0;         //lockout flag
00053     
00054 printf("\n \n PASSWORD REQUIRED \n \n ");
00055 
00056     int released =1;    // variable to detect if a key is being  pressed on keypad
00057   
00058     output1=0;      // digital output
00059     printf("\r\n Password Entered:");
00060     led_green = 0;  //LED green on
00061     led_red = 0;        //LED red on
00062 //red and green led turned on to create yellow
00063 
00064     output2 = 1;  // buzzer alarm off
00065 
00066 //buzzer period select,                 
00067     beep.period(0.001); // determines pitch and sound frequency
00068     
00069     wait(0.001);    //off time
00070 
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00085 
00086 
00087 ////beginning of do-while loop to activate system lockout after too many login attemps   
00088 do{
00089 
00090     while(1) {
00091 
00092         led_green = 0;
00093         led_red = 0;
00094         printf("Enter Password:");
00095         
00096         // Reading the password characters
00097         for(i=0; i<number_of_chars; i++) {
00098 
00099             key = kpad.ReadKey();       // for loop reads each character entered up to 
00100                                         // number of chars in a password
00101 
00102 
00103     if(key == '\0')                          // if no character is being typed
00104              released = 1;                   //set the flag when all keys are released
00105 
00106       if((key != '\0') && (released == 1))   //if key pressed AND previous key released
00107        { 
00108 
00109        enterd_pass[i]=key;      
00110        printf("%c ",enterd_pass[i]);           
00111        released = 0;              //flag to indicate that key is pressed
00112               }
00113 else
00114 i--;
00115           
00116 
00117            
00118         }
00119         
00120         wait(0.003);
00121 
00122         //// prompts entered passcode and is compared to preset user passcodes 
00123         //// comparing password entered via keypad to valid user passwords
00124 
00125       /////////    user 1    ///////////////
00126         for(i=0; i<number_of_chars; i++) {
00127             if( enterd_pass[i] == pass_user1[i] ) {
00128                 user_index1 = 1;
00129                output2 = 1;
00130             } else {
00131                 user_index1 = 0;
00132                 break;
00133             }
00134         }
00135         
00136         
00137 
00138         /////////    user 2    ///////////////
00139         for(i=0; i<number_of_chars; i++) {
00140             if( enterd_pass[i] == pass_user2[i] ) {
00141                 user_index2 = 2;
00142             } else {
00143                 user_index2 = 0;
00144                 break;
00145             }
00146         }
00147         /////////    user 3    ///////////////
00148         for(i=0; i<number_of_chars; i++) {
00149             if( enterd_pass[i] == pass_user3[i] ) {
00150                 user_index3 = 3;
00151             } else {
00152                 user_index3 = 0;
00153                 break;
00154             }
00155         }
00156         /////////    user 4    ///////////////
00157         for(i=0; i<number_of_chars; i++) {
00158             if( enterd_pass[i] == pass_user4[i] ) {
00159                 user_index4 = 4;
00160             } else {
00161                 user_index4 = 0;
00162                 break;
00163             }
00164         }
00165         /////////    user 5    ///////////////
00166         for(i=0; i<number_of_chars; i++) {
00167             if( enterd_pass[i] == pass_user5[i] ) {
00168                 user_index5 = 5;
00169             } else {
00170                 user_index5 = 0;
00171                 break;
00172             }
00173         }
00174         
00175         // if passcode matches a user passcode
00176         // continue to grant user accress and activate outputs
00177        
00178     ////// correct password prompts and outputs  //////
00179 
00180         if( (1 == user_index1)||(2 == user_index2)||(3 == user_index3)||(4 == user_index4)||(5 == user_index5) )  
00181 
00182 // if user index is between 1 and 5 and not 0
00183 {
00184             printf("\r\n Passcode recognized \n \n ");          // correct passcode prompt
00185             led_red = 1;                           // red led has 0V, leaving green led on
00186             output2 = 0;                     // activates short buzzer
00187             output1=1;                              // activates short buzzer 
00188             printf("\r\n Welcome Cory Burke \n \n" );
00189            
00190           output1=1;                               // output 1 activated
00191 
00192             if(1 == user_index1) {
00193                 printf("\r Access granted User 1 \n \n");              // User 1’s name can be entered her      
00194             led_red = 1;                        //red led turned off
00195             output2 = 1;                  // activates short buzzer 
00196             printf("\r\n Welcome User 1 \n" );
00197             printf("\r User numer: 1 \n");
00198             output1=0;
00199             }
00200             if(2 == user_index2) {
00201                 printf("\r\n Access granted: User 2 \n \n ");
00202             led_red = 1;                        //red led turned off
00203             output2 = 1;                  // activates short buzzer 
00204             printf("\r\n Welcome User 2 \n" );
00205             printf("\r User numer: 2 \n");
00206             output1=0;                      // output1 turned off
00207             }
00208             if(3 == user_index3) {
00209                 printf("\r\n Access granted: User 3  \n ");
00210             led_red = 1;                        //red led turned off
00211             output2 = 1;                  // activates short buzzer 
00212             printf("\r\n Welcome User 3 \n" );
00213             printf("\r User numer: 3 \n ");
00214             output1=0;                      // output1 turned off
00215             }
00216             if(4 == user_index4) {
00217                 printf("\r\n Access granted: User 4   \n ");
00218             led_red = 1;                        //red led turned off
00219             output2 = 1;                  // activates short buzzer 
00220             printf("\r\n Welcome User 4 \n" );
00221             printf("\r User numer: 4 \n");
00222             output1=0;                      // output1 turned off
00223             }
00224             if(5 == user_index5) {
00225                 printf("\r Access granted: User 5 \n ");
00226             led_red = 1;                        //red led turned off
00227             output2 = 1;                  // activates short buzzer 
00228             printf("\r\n Welcome User 5 \n " );
00229             printf("\r User numer: 5 \n");
00230             output1=0;                      // output1 turned off
00231             }
00232 
00233             wait(1);
00234             output2 = 0;
00235             beep = 25.0/100.0;          // beep duty cycle to control volume and pitch
00236             led_red = 0;                //  
00237             led_green=0;                //red and green led turned on to create yellow
00238             output1=1;              // output1 turned off
00239             wait(1);
00240       
00241 
00242 
00243         }
00244 ///// when an incorrect password was entered 
00245         else {
00246             printf("\r\n \n Incorrect password \n \n Access denied!  \n \n  ");
00247             led_green = 1;              //green led turned off
00248             led_red=0;              //red led turned on
00249             wait(1);
00250             output2 = 0;          // buzzer off
00251              beep = 50.0/100.0;
00252             j=j+1;                  //  records access attempt
00253             //// too many attempts made
00254 
00255             if(j==4){printf("\r\n \n TOO MANT ATTEMPTS, SYSTEM LOCKOUT  \n \n  ");
00256             led_green = 1;      //green led turned off
00257             led_red=0;      //red led turned on
00258             flag=1;         //lockout flag activated
00259             wait(1);
00260             output2 = 1;       // long buzzer when system lockout occurs
00261              beep = 50.0/100.0; 
00262                output1=0;       // output1 turned on
00263             wait(1);
00264              output1=0;
00265             wait(1);
00266              output1=1;
00267             wait(1);
00268              output1=0;
00269             wait(1);
00270              output1=1;
00271             wait(1);    //long buzzer ends
00272                                                                             }
00273             
00274                                                                     }
00275         
00276         beep = 0.0/100.0;   // buzzer turned off by duty cycle = 0
00277         led_green = 0;      //green led turned on
00278             led_red=0;      //red led turned on
00279                             //red and green led turned on to create yellow
00280         output2 = 0;                  
00281         output1=1; 
00282 
00283     }
00284     
00285     
00286     
00287     
00288     
00289  } while(flag==0); ////end of do-while loop, continues until flag =1 from too many attempts 
00290                 
00291     
00292     
00293     ////end of program
00294     
00295     
00296 }
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