Diff: main.cpp

Revision:

0:819b4e0e0ae6

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Nov 16 04:41:13 2017 +0000
@@ -0,0 +1,64 @@
+
+#include "mbed.h"
+#include "Keypad.h"
+#include "TextLCD.h"
+#include "string.h"
+TextLCD display(D8, D9, D4, D5, D6, D7); // rs, e, d4-d7
+
+char kpdLayout[4][4] = {{'1' ,'2' ,'3' ,'A'},  //row0
+                        {'4' ,'5' ,'6' ,'B'},  //row1
+                        {'7' ,'8' ,'9' ,'C'},  //row2
+                        {'*' ,'0' ,'#' ,'D'}}; //row3
+
+Keypad kpad(PB_14, PB_15, PB_1, PB_2, PB_11, PB_12, PA_11, PA_12);
+char password[20];
+const char code1[]="12345678";
+int main() {
+     char key;
+     int released = 1,count=0;
+     display.locate(0,0);
+     display.printf("insert password");
+     while(1){
+         key = kpad.ReadKey();                   //read the current key pressed
+         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
+             if(key!='#')
+             {  password[count]=key;    // add pasword
+                password[count+1]='\0';  // put end of password
+                count++;   //counter
+                if(count>8)  //max count
+                    count=0;
+                display.cls();
+                display.locate(0,0);
+                display.printf("insert password");
+                display.locate(2,1);
+                display.printf("pass:%s",password);
+              }
+              else if(key=='#')
+              { bool accept=1;
+                for(int i=0;password[i]!='\0';i++)
+                {   if(password[i]!=code1[i])
+                    {   accept=0;
+                        break;
+                    }
+                }
+                display.cls();
+                if(accept==0)
+                {    display.locate(0,0);
+                    display.printf("wrong password ");
+                }
+                else
+                {    display.locate(0,0);
+                    display.printf("accept password");
+                }
+                count=0; // reset password counter
+              }
+              
+                   
+            
+             released = 0;                       //clear the flag to indicate that key is still pressed
+         }
+     }
+}