main.cpp

00001   #include "mbed.h"
00002   #include "Keypad.h"
00003 #include "TextLCD.h"
00004  Keypad kpad(PTC8, PTC1, PTB19, PTB18, PTC5, PTC7, PTC0, PTC9);
00005  Serial pc(USBTX, USBRX);
00006  TextLCD lcd(PTA1, PTB23, PTA2, PTC2, PTC3, PTC12, TextLCD::LCD16x2); 
00007 /*
00008 col1, col2, col3, col4,
00009 row1, row2, row3, row4
00010 */
00011 
00012 const int number_of_chars = 4;
00013 const char pass_user1[number_of_chars] = {'1','2','3','A'};  //HA
00014 const char pass_user2[number_of_chars] = {'2','2','3','A'};  //FA
00015 const char pass_user3[number_of_chars] = {'5','2','3','A'};  //AA
00016 const char pass_user4[number_of_chars] = {'6','2','3','A'};  //MA
00017 const char pass_user5[number_of_chars] = {'7','2','3','A'};  //FF
00018 
00019 char enterd_pass[number_of_chars] = {' ', ' ',' ',' '};
00020 
00021 DigitalOut led_red(LED_RED);
00022 DigitalOut led_green(LED_GREEN);
00023 DigitalOut active_buzzer(PTC4);  //Buzzer on pin PTC4=D9
00024 
00025 PwmOut beep(PTC4); // buzzer
00026 
00027 //Serial pc(USBTX, USBRX);
00028 
00029 int main()
00030 {
00031     char key;
00032     int i;
00033    int user_index1=0;
00034     int user_index2=0;
00035     int user_index3=0;
00036     int user_index4=0;
00037     int user_index5=0;
00038  
00039     int released =1;;
00040     
00041 
00042     led_green = 0;
00043     led_red = 0;
00044     active_buzzer = 0;
00045 
00046     beep.period(0.001);
00047 
00048     lcd.cls();
00049     wait(0.001);
00050 
00051     
00052 
00053     while(true) {
00054         
00055         lcd.locate(0,0); // col, row 
00056         lcd.printf("Enter Password:");
00057 
00058         // Reading the password characters
00059         for(i=0; i<number_of_chars; i++) {
00060             key = kpad.ReadKey();
00061         
00062     if(key == '\0')
00063              released = 1;                       //set the flag when all keys are released
00064            if((key != '\0') && (released == 1)) {  //if a key is pressed AND previous key was released
00065         enterd_pass[i]=key; 
00066         lcd.locate(i,1); // col, row             
00067         lcd.printf("*"); 
00068                     
00069               released = 0;                       //clear the flag to indicate that key is still pressed
00070               }
00071 else
00072 i--;
00073           
00074 
00075            
00076         }
00077         
00078         wait(0.5);
00079         
00080         lcd.locate(0,1); // col, row             
00081         lcd.printf("    " ); 
00082         
00083         // comparing passwords
00084 
00085       /////////    user 1    ///////////////
00086         for(i=0; i<number_of_chars; i++) {
00087             if( enterd_pass[i] == pass_user1[i] ) {
00088                 user_index1 = 1;
00089             } else {
00090                 user_index1 = 0;
00091                 break;
00092             }
00093         }
00094         
00095         
00096 
00097         /////////    user 2    ///////////////
00098         for(i=0; i<number_of_chars; i++) {
00099             if( enterd_pass[i] == pass_user2[i] ) {
00100                 user_index2 = 2;
00101             } else {
00102                 user_index2 = 0;
00103                 break;
00104             }
00105         }
00106         /////////    user 3    ///////////////
00107         for(i=0; i<number_of_chars; i++) {
00108             if( enterd_pass[i] == pass_user3[i] ) {
00109                 user_index3 = 3;
00110             } else {
00111                 user_index3 = 0;
00112                 break;
00113             }
00114         }
00115         /////////    user 4    ///////////////
00116         for(i=0; i<number_of_chars; i++) {
00117             if( enterd_pass[i] == pass_user4[i] ) {
00118                 user_index4 = 4;
00119             } else {
00120                 user_index4 = 0;
00121                 break;
00122             }
00123         }
00124         /////////    user 5    ///////////////
00125         for(i=0; i<number_of_chars; i++) {
00126             if( enterd_pass[i] == pass_user5[i] ) {
00127                 user_index5 = 5;
00128             } else {
00129                 user_index5 = 0;
00130                 break;
00131             }
00132         }
00133 //////////////////////////////////////////////////
00134         if( (1 == user_index1)||(2 == user_index2)||(3 == user_index3)||(4 == user_index4)||(5 == user_index5) ) {
00135             pc.printf("Access granted    ");
00136             led_red = 1;
00137             active_buzzer = 1;
00138             lcd.locate(0,1); // col, row
00139             lcd.printf("User: ");
00140 
00141             if(1 == user_index1) {
00142                 lcd.locate(6,1); // col, row
00143                 lcd.printf("HA");
00144             }
00145             if(2 == user_index2) {
00146                 lcd.locate(6,1); // col, row
00147                 lcd.printf("FA");
00148             }
00149             if(3 == user_index3) {
00150                 lcd.locate(6,1); // col, row
00151                 lcd.printf("AA");
00152             }
00153             if(4 == user_index4) {
00154                 lcd.locate(6,1); // col, row
00155                 lcd.printf("MA");
00156             }
00157             if(5 == user_index5) {
00158                 lcd.locate(6,1); // col, row
00159                 lcd.printf("FF");
00160             }
00161 
00162             wait(1);
00163             active_buzzer = 1;
00164             beep = 80.3/100.0;
00165             led_red = 0;
00166             wait(1);
00167        lcd.cls();
00168 
00169 
00170         }
00171 
00172         else {
00173             lcd.locate(0,0); // col, row  
00174             lcd.printf("Access denied     ");
00175             led_green = 1;
00176             wait(1);
00177             led_green = 0;
00178             active_buzzer = 0;
00179             beep = 0.0/100.0;
00180         }
00181         
00182         beep = 0.0/100.0;
00183 
00184     }
00185 }
00186