main.cpp

00001 
00002 #include "mbed.h"
00003 #include "Keypad.h"
00004 #include "TextLCD.h"
00005 #include "string.h"
00006 TextLCD display(D8, D9, D4, D5, D6, D7); // rs, e, d4-d7
00007 
00008 char kpdLayout[4][4] = {{'1' ,'2' ,'3' ,'A'},  //row0
00009                         {'4' ,'5' ,'6' ,'B'},  //row1
00010                         {'7' ,'8' ,'9' ,'C'},  //row2
00011                         {'*' ,'0' ,'#' ,'D'}}; //row3
00012 
00013 Keypad kpad(PB_14, PB_15, PB_1, PB_2, PB_11, PB_12, PA_11, PA_12);
00014 char password[20];
00015 const char code1[]="12345678";
00016 int main() {
00017      char key;
00018      int released = 1,count=0;
00019      display.locate(0,0);
00020      display.printf("insert password");
00021      while(1){
00022          key = kpad.ReadKey();                   //read the current key pressed
00023          if(key == '\0')
00024              released = 1;                       //set the flag when all keys are released            
00025          if((key != '\0') && (released == 1))
00026          {  //if a key is pressed AND previous key was released
00027              if(key!='#')
00028              {  password[count]=key;    // add pasword
00029                 password[count+1]='\0';  // put end of password
00030                 count++;   //counter
00031                 if(count>8)  //max count
00032                     count=0;
00033                 display.cls();
00034                 display.locate(0,0);
00035                 display.printf("insert password");
00036                 display.locate(2,1);
00037                 display.printf("pass:%s",password);
00038               }
00039               else if(key=='#')
00040               { bool accept=1;
00041                 for(int i=0;password[i]!='\0';i++)
00042                 {   if(password[i]!=code1[i])
00043                     {   accept=0;
00044                         break;
00045                     }
00046                 }
00047                 display.cls();
00048                 if(accept==0)
00049                 {    display.locate(0,0);
00050                     display.printf("wrong password ");
00051                 }
00052                 else
00053                 {    display.locate(0,0);
00054                     display.printf("accept password");
00055                 }
00056                 count=0; // reset password counter
00057               }
00058               
00059                    
00060             
00061              released = 0;                       //clear the flag to indicate that key is still pressed
00062          }
00063      }
00064 }