Keypad-No matching function

luckyboy5600 · August 31, 2023, 12:34pm

Soooo, I've just made this piece if code for an uno, it's a door lock. it doesn't compile because of a series of errors--

/home/lakshya/Downloads/locky/locky.ino:18:82: error: no matching function for call to 'Keypad::Keypad(char*, <brace-enclosed initializer list>, <brace-enclosed initializer list>, const byte&, const byte&)'
 Keypad* keypad = Keypad(makeKeymap(key), {9, 8, 7, 6 },{ 5, 4, 3, 2 }, rows, cols);
                                                                                  ^
In file included from /home/lakshya/Downloads/locky/locky.ino:3:0:
/home/lakshya/Arduino/libraries/Keypad/src/Keypad.h:78:2: note: candidate: Keypad::Keypad(char*, byte*, byte*, byte, byte)
  Keypad(char *userKeymap, byte *row, byte *col, byte numRows, byte numCols);
  ^~~~~~
/home/lakshya/Arduino/libraries/Keypad/src/Keypad.h:78:2: note:   no known conversion for argument 2 from '<brace-enclosed initializer list>' to 'byte* {aka unsigned char*}'
/home/lakshya/Arduino/libraries/Keypad/src/Keypad.h:75:7: note: candidate: constexpr Keypad::Keypad(const Keypad&)
 class Keypad : public Key {
       ^~~~~~
/home/lakshya/Arduino/libraries/Keypad/src/Keypad.h:75:7: note:   candidate expects 1 argument, 5 provided
/home/lakshya/Arduino/libraries/Keypad/src/Keypad.h:75:7: note: candidate: constexpr Keypad::Keypad(Keypad&&)
/home/lakshya/Arduino/libraries/Keypad/src/Keypad.h:75:7: note:   candidate expects 1 argument, 5 provided
/home/lakshya/Downloads/locky/locky.ino:19:18: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
 char* password = "4567";
                  ^~~~~~
/home/lakshya/Downloads/locky/locky.ino: In function 'void loop()':
/home/lakshya/Downloads/locky/locky.ino:45:22: error: request for member 'getKey' in 'keypad', which is of pointer type 'Keypad*' (maybe you meant to use '->' ?)
   char code = keypad.getKey();
                      ^~~~~~
Multiple libraries were found for "LiquidCrystal_I2C.h"
  Used: /home/lakshya/Arduino/libraries/LiquidCrystal_I2C
  Not used: /home/lakshya/Arduino/libraries/Arduino-LiquidCrystal-I2C-library-master
Using library Keypad at version 3.1.0 in folder: /home/lakshya/Arduino/libraries/Keypad 
Using library LiquidCrystal I2C at version 1.1.2 in folder: /home/lakshya/Arduino/libraries/LiquidCrystal_I2C 
Using library Wire at version 1.0 in folder: /home/lakshya/.arduino15/packages/arduino/hardware/avr/1.8.6/libraries/Wire 
exit status 1

Compilation error: no matching function for call to 'Keypad::Keypad(char*, <brace-enclosed initializer list>, <brace-enclosed initializer list>, const byte&, const byte&)'

Yes, It's long, but i figured you'd need complete info to debug dis.

this is my code-

  

#include <Keypad.h>
#include <LiquidCrystal_I2C.h>

int pos = 0;  // LCD Connections
const byte rows = 4;
const byte cols = 3;

char key[rows][cols] = {
  { '1', '2', '3' },
  { '4', '5', '6' },
  { '7', '8', '9' },
  { '*', '0', '#' }
};


Keypad* keypad = Keypad(makeKeymap(key), {9, 8, 7, 6 },{ 5, 4, 3, 2 }, rows, cols);
char* password = "4567";
int currentposition = 0;
int redled = 10;
int greenled = 11;
int buzz = 8;
int invalidcount = 12;

LiquidCrystal_I2C lcd(0x3F, 16, 2);  // I2C address 0x27, 16 column and 2 rows


void setup() {

  displayscreen();
  Serial.begin(9600);
  pinMode(redled, OUTPUT);
  pinMode(greenled, OUTPUT);
  pinMode(buzz, OUTPUT);

  lcd.begin(16, 2);
}

void loop() {
  if (currentposition == 0) {
    displayscreen();
  }
  int l;
  char code = keypad.getKey();
  if (code != NO_KEY) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("PASSWORD:");
    lcd.setCursor(7, 1);
    lcd.print(" ");
    lcd.setCursor(7, 1);
    for (l = 0; l <= currentposition; ++l) {

      lcd.print("*");
      keypress();
    }

    if (code == password[currentposition]) {
      ++currentposition;
      if (currentposition == 4) {

        unlockdoor();
        currentposition = 0;
      }

    }

    else {
      ++invalidcount;
      incorrect();
      currentposition = 0;
    }
    if (invalidcount == 5) {

      ++invalidcount;
      torture1();
    }
    if (invalidcount == 8) {
      torture2();
    }
  }
  // LOOP ENDS!!!//
}

//********OPEN THE DOOR FUNCTION!!!!***********//

void unlockdoor() {
  delay(900);

  lcd.setCursor(0, 0);
  lcd.println(" ");
  lcd.setCursor(1, 0);
  lcd.print("Access Granted");
  lcd.setCursor(4, 1);
  lcd.println("WELCOME!!");
  lcd.setCursor(15, 1);
  lcd.println(" ");
  lcd.setCursor(16, 1);
  lcd.println(" ");
  lcd.setCursor(14, 1);
  lcd.println(" ");
  lcd.setCursor(13, 1);
  lcd.println(" ");
  unlockbuzz();

  digitalWrite(13,HIGH);
  delay(2000);



  delay(1000);
  counterbeep();

  delay(1000);

  digitalWrite(13,LOW);


    currentposition = 0;

    lcd.clear();
    displayscreen();
  
}

//************WRONG CODE FUNCTION********//

void incorrect() {
  delay(500);
  lcd.clear();
  lcd.setCursor(1, 0);
  lcd.print("CODE");
  lcd.setCursor(6, 0);
  lcd.print("INCORRECT");
  lcd.setCursor(15, 1);
  lcd.println(" ");
  lcd.setCursor(4, 1);
  lcd.println("GET AWAY!!!");

  lcd.setCursor(13, 1);
  lcd.println(" ");
  Serial.println("CODE INCORRECT YOU ARE UNAUTHORIZED");
  digitalWrite(redled, HIGH);
  digitalWrite(buzz, HIGH);
  delay(3000);
  lcd.clear();
  digitalWrite(redled, LOW);
  digitalWrite(buzz, LOW);
  displayscreen();
}
//************** CLEAR THE SCREEN!!!*************//
void clearscreen() {
  lcd.setCursor(0, 0);
  lcd.println(" ");
  lcd.setCursor(0, 1);
  lcd.println(" ");
  lcd.setCursor(0, 2);
  lcd.println(" ");
  lcd.setCursor(0, 3);
  lcd.println(" ");
}
//**************KEYPRESS********************//
void keypress() {



  digitalWrite(buzz, HIGH);
  delay(50);
  digitalWrite(buzz, LOW);
}
//********DISPALAY FUNCTION!!!*************//
void displayscreen() {

  lcd.setCursor(0, 0);
  lcd.print("Don't even try,");
  lcd.setCursor(0, 1);
  lcd.print("CHINTU");
}
//*************** ARM SERVO***********//
void armservo() {

  digitalWrite(10,HIGH);
  delay(5000);
  digitalWrite(10,HIGH);
  
}
//**********UNLOCK BUZZ*************//
void unlockbuzz() {

  digitalWrite(buzz, HIGH);
  delay(80);
  digitalWrite(buzz, LOW);
  delay(80);
  digitalWrite(buzz, HIGH);
  delay(80);
  digitalWrite(buzz, LOW);
  delay(200);
  digitalWrite(buzz, HIGH);
  delay(80);
  digitalWrite(buzz, LOW);
  delay(80);
  digitalWrite(buzz, HIGH);
  delay(80);
  digitalWrite(buzz, LOW);
  delay(80);
}

//**********COUNTER BEEP**********//
void counterbeep() {
  delay(1200);


  lcd.clear();
  digitalWrite(buzz, HIGH);

  lcd.setCursor(2, 15);
  lcd.println(" ");
  lcd.setCursor(2, 14);
  lcd.println(" ");
  lcd.setCursor(2, 0);
  delay(200);
  lcd.println("GET IN WITHIN:::");

  lcd.setCursor(4, 1);
  lcd.print("5");
  delay(200);
  lcd.clear();
  lcd.setCursor(2, 0);
  lcd.println("GET IN WITHIN:");
  digitalWrite(buzz, LOW);
  delay(1000);
  //2
  digitalWrite(buzz, HIGH);
  lcd.setCursor(2, 0);
  lcd.println("GET IN WITHIN:");
  lcd.setCursor(4, 1);  //2
  lcd.print("4");
  delay(100);
  lcd.clear();
  lcd.setCursor(2, 0);
  lcd.println("GET IN WITHIN:");
  digitalWrite(buzz, LOW);
  delay(1000);
  //3
  digitalWrite(buzz, HIGH);
  lcd.setCursor(2, 0);
  lcd.println("GET IN WITHIN:");
  lcd.setCursor(4, 1);  //3
  lcd.print("3");
  delay(100);
  lcd.clear();
  lcd.setCursor(2, 0);
  lcd.println("GET IN WITHIN:");
  digitalWrite(buzz, LOW);
  delay(1000);
  //4
  digitalWrite(buzz, HIGH);
  lcd.setCursor(2, 0);
  lcd.println("GET IN WITHIN:");
  lcd.setCursor(4, 1);  //4
  lcd.print("2");
  delay(100);
  lcd.clear();
  lcd.setCursor(2, 0);
  lcd.println("GET IN WITHIN:");
  digitalWrite(buzz, LOW);
  delay(1000);
  //
  digitalWrite(buzz, HIGH);
  lcd.setCursor(4, 1);
  lcd.print("1");
  delay(100);
  lcd.clear();
  lcd.setCursor(2, 0);
  lcd.println("GET IN WITHIN::");
  digitalWrite(buzz, LOW);
  delay(1000);
  //5
  digitalWrite(buzz, HIGH);
  delay(40);
  digitalWrite(buzz, LOW);
  delay(40);
  digitalWrite(buzz, HIGH);
  delay(40);
  digitalWrite(buzz, LOW);
  delay(40);
  digitalWrite(buzz, HIGH);
  delay(40);
  digitalWrite(buzz, LOW);
  delay(40);
  digitalWrite(buzz, HIGH);
  delay(40);
  digitalWrite(buzz, LOW);
  lcd.clear();
  lcd.setCursor(2, 0);
  lcd.print("RE-LOCKING");
  delay(500);
  lcd.setCursor(12, 0);
  lcd.print(".");
  delay(500);
  lcd.setCursor(13, 0);
  lcd.print(".");
  delay(500);
  lcd.setCursor(14, 0);
  lcd.print(".");
  delay(400);
  lcd.clear();
  lcd.setCursor(4, 0);
  lcd.print("LOCKED!");
  delay(440);
}
//*********TORTURE1***********//
void torture1() {
  delay(1000);
  lcd.clear();
  lcd.setCursor(2, 0);
  lcd.print("WAIT FOR ");
  lcd.setCursor(5, 1);
  lcd.print("15 SECONDS");
  digitalWrite(buzz, HIGH);
  delay(15000);
  digitalWrite(buzz, LOW);
  lcd.clear();
  lcd.setCursor(2, 0);
  lcd.print("LOL..");
  lcd.setCursor(1, 1);
  lcd.print(" HOW WAS THAT??");
  delay(3500);
  lcd.clear();
}
//*****TORTURE2*****//
void torture2() {
  delay(1000);
  lcd.setCursor(1, 0);
  lcd.print(" ");
  lcd.setCursor(2, 0);
  lcd.print("EAR DRUMS ARE");
  lcd.setCursor(0, 1);
  lcd.print(" PRECIOUS!! ");
  delay(1500);
  lcd.clear();
  lcd.setCursor(1, 0);
  lcd.print(" WAIT FOR");
  lcd.setCursor(4, 1);
  lcd.print(" 1 MINUTE");
  digitalWrite(buzz, HIGH);
  delay(55000);
  counterbeep();
  lcd.clear();
  digitalWrite(buzz, LOW);
  lcd.setCursor(2, 0);
  lcd.print("WANT MORE");
  lcd.setCursor(1, 1);
  lcd.print("DEAR BROTHER?");
  delay(2500);
  lcd.clear();
  lcd.setCursor(2, 0);
  lcd.print("Ha Ha Ha Ha");
  delay(1700);
  lcd.clear();
}

So, yeah, that's my problem

UKHeliBob · August 31, 2023, 12:41pm

Keypad* keypad = Keypad(makeKeymap(key), { 9, 8, 7, 6 }, { 5, 4, 3, 2 }, rows, cols);

Do the examples for the Keypad library use this form of function call to create the Keypad object ?

This is more normal

const byte ROWS = 4; //four rows
const byte COLS = 3; //three columns
char keys[ROWS][COLS] = {
  {'1','2','3'},
  {'4','5','6'},
  {'7','8','9'},
  {'*','0','#'}
};
byte rowPins[ROWS] = {5, 4, 3, 2}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {8, 7, 6}; //connect to the column pinouts of the keypad

Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );

luckyboy5600 · August 31, 2023, 12:42pm

Well dang, that's fast!
I'll try it out

luckyboy5600 · August 31, 2023, 12:44pm

Problem solved! Thank you!

UKHeliBob · August 31, 2023, 12:45pm

That's good

As a matter of interest, where did you get the idea for the original syntax that you used ?

system · February 27, 2024, 12:46pm

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Keypad-No matching function

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