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Related

error in code, please help

jingi016
jingi016 over 6 years ago

Can anyone please help me with below error

 

error: 'myKeypad' was not declared in this scope

 

#include <Keypad.h>
int buzzer=12;
int CorrectLED=13;
String password="1234";
String tempPassword="";
const byte ROWS = 4; //four rows
const byte COLS = 4; //four columns
char keypressed;
//define the cymbols on the buttons of the keypad
char keymap [ROWS][COLS] = {
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}
};

byte rowPins[ROWS] = {3, 4, 5, 6}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {7,8,9,10}; //connect to the column pinouts of the keypad

Keypad mykeypad = Keypad( makeKeymap(keymap), rowPins, colPins, ROWS, COLS );
void setup ()
{
   Serial.begin(9600);
   pinMode(buzzer,OUTPUT);
   pinMode(CorrectLED,OUTPUT);
}

void loop (){

   keypressed = myKeypad.getKey();
  if (keypressed != NO_KEY);
  {
    Serial.print(keypressed);
  }
}
   {
     if  (keypressed == '0'|| keypressed == '1' || keypressed == '2' || keypressed =='3' ||
          keypressed == '4'|| keypressed == '5' || keypressed == '6' || keypressed =='7' ||
          keypressed == '8'|| keypressed == '9' || )
     {
      temppPassword += keypressed
     }
      
   if ( keypressed =='*' )
   
     {
      if ( tempPassword == password )
      digitalWrite(CorrectLED,HIGH);
      else
      digitalWrite(buzzer,HIGH);
     }
    if ( keypressed == '#')
          {
      tempPassword="";
      digitalWrite(CorrectLED,LOW);
      digitalWrite(buzzer,LOW);
    }
    }

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  • beacon_dave
    beacon_dave over 6 years ago +3
    You appear to have declared it as 'mykeypad' and not as 'myKeypad' Keypad mykeypad = Keypad( makeKeymap(keymap), rowPins, colPins, ROWS, COLS ); keypressed = myKeypad .getKey(); You have some more errors…
Parents
  • beacon_dave
    beacon_dave over 6 years ago

    You appear to have declared it as 'mykeypad' and not as 'myKeypad'

     

    Keypad mykeypad = Keypad( makeKeymap(keymap), rowPins, colPins, ROWS, COLS );

     

    keypressed = myKeypad.getKey();

     

     

    You have some more errors to fix as well.

     

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  • jingi016
    jingi016 over 6 years ago in reply to beacon_dave

    still am not able to fix this error only image

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  • jingi016
    jingi016 over 6 years ago in reply to beacon_dave

    still am not able to fix this error only image

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