Security Panel using lcd 1602 and 4x4 keypad

Projects General Guidance
1

I am having difficulty with my security panel project. I'm getting a error saying that 'setLocked' was not declared in the scope. I don't know what my next step should be. There was a topic on this same thing and i read it but i'm still confused on what's wrong and jut can't figure it out. please help.

#include <LiquidCrystal.h>
#include <Keypad.h>

int RED = 10;
int GREEN = 11;


char* password = "1234";
int posit = 0;

const byte ROWS = 4;
const byte COLS = 4;
char keys[ROWS][COLS] = {
  {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'}
};

byte rowPins[ROWS] = {9, 8, 7, 6};
byte colPins[COLS] = {5, 4, 3, 2};
Keypad myKeypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);

const int rs = 0, en = 1, d4 = 2, d5 = 3, d6 = 4, d7 = 5;
LiquidCrystal lcd (rs, en, d4, d5, d6, d7);

void setup() {
  lcd.begin(16, 2);
  pinMode(RED, OUTPUT);
  pinMode(GREEN, OUTPUT);
  setLocked(true);

}

void loop() {
  char whichKey = myKeypad.getKey();

  lcd.setCursor(2, 0);
  lcd.print("Good Evening");
  lcd.setCursor(5, 1);
  lcd.print("Master");
  delay(2000);
  lcd.clear();
  delay(1000);
  lcd.setCursor(1, 0);
  lcd.print("Please enter");
  lcd.setCursor(1, 1);
  lcd.print("your PW:");
  lcd.blink();

  if (whichKey == '*' || whichKey == '#' || whichKey == 'A' || whichKey == 'B' || whichKey == 'C' || whichKey == 'D') {
    posit = 0;
    setLocked (true);
    lcd.clear();
    lcd.setCursor(3, 0);
    lcd.print("Invalid key!");
    delay(1000);
    lcd.clear();
  }

  if (whichKey == password[posit]) {
    posit ++;
  }

  if (posit == 4) {
    setLocked(false);
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("***Verified***");
    delay(3000);
    lcd.clear();
    delay(1000);
  }

  void setLocked(int locked) {
    if (locked) {
      digitalWrite(RED, HIGH);
      digitalWrite(GREEN, LOW);
    }
    else {
      digitalWrite(RED, HIGH);
      digitalWrite(GREEN, LOW);
    }
  }
}
2

The closing brace at the end of the loop() function is missing

3

As @UKHeliBob has said... although rather than missing it looks like it has taken a walk to the end of your program... :slight_smile:

4

I see where it is supposed to go. And it works now. Thank you so much!

5

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