Question

#include <Keypad.h> const byte ROWS = 4;const byte COLS = 3;char hexaKeys[ROWS][COLS] = { {'1', '2', '3'}, {'4', '5', '6'}, {'7', '8', '9'}, {'*', '0', '#'}};int index = 0;char password[4] = {'1', '2', '3', '4'};char userPassword[4] = {};bool alarm = false;bool guardOn = false;byte rowPins[ROWS] = {11, 10, 9, 8};byte colPins[COLS] = {7, 6, 5};Keypad customKeypad = Keypad(makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);bool checkPass() { for (int i = 0; i < sizeof(password); i++) { if (password[i] != userPassword[i]) { return false; } } return true;}void setup() { pinMode(2, OUTPUT); pinMode(3, INPUT); Serial.begin(9600);}void loop() { char customKey = customKeypad.getKey(); if (customKey) { if (customKey == '#') { guardOn = true; } else if (customKey == '*') { // Handle '*' key press if needed } else { userPassword[index] = customKey; index++; Serial.println(checkPass()); if (checkPass()) { alarm = false; guardOn = false; index = 0; for (int i = 0; i < sizeof(userPassword); i++) { userPassword[i] = '*'; } } } } if (guardOn) { digitalWrite(2, HIGH); if (digitalRead(3)) { tone(A0, 100); } } else { digitalWrite(2, LOW); noTone(A0); } сделайте чтоб код скидывался при нажатии на * на клавиатуре 4×4 в тинкеркад срочно нужно помогите умоляю ​

Answer 1

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Answer 2

To modify the code so that it resets when the "*" key is pressed on a 4x4 keypad in Tinkercad, you can make the following changes:

#include

const byte ROWS = 4;
const byte COLS = 4;
char hexaKeys[ROWS][COLS] = {
  {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'}
};
int index = 0;
char password[4] = {'1', '2', '3', '4'};
char userPassword[4] = {};
bool alarm = false;
bool guardOn = false;
byte rowPins[ROWS] = {11, 10, 9, 8};
byte colPins[COLS] = {7, 6, 5, 4};
Keypad customKeypad = Keypad(makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);

bool checkPass() {
  for (int i = 0; i < sizeof(password); i++) {
    if (password[i] != userPassword[i]) {
      return false;
    }
  }
  return true;
}

void setup() {
  pinMode(2, OUTPUT);
  pinMode(3, INPUT);
  Serial.begin(9600);
}

void loop() {
  char customKey = customKeypad.getKey();
  if (customKey) {
    if (customKey == '#') {
      guardOn = true;
    } else if (customKey == '*') {
      // Reset the user password and index
      for (int i = 0; i < sizeof(userPassword); i++) {
        userPassword[i] = '\0';
      }
      index = 0;
    } else {
      userPassword[index] = customKey;
      index++;
      Serial.println(checkPass());
      if (checkPass()) {
        alarm = false;
        guardOn = false;
        index = 0;
        for (int i = 0; i < sizeof(userPassword); i++) {
          userPassword[i] = '*';
        }
      }
    }
  }

if (guardOn) {
    digitalWrite(2, HIGH);
    if (digitalRead(3)) {
      tone(A0, 100);
    }
  } else {
    digitalWrite(2, LOW);
    noTone(A0);
  }
}

In this modified code, the "*" key is detected in the `loop()` function using the `customKeypad.getKey()` function. If the "*" key is pressed, the user password and index are reset to their initial values. The user password is reset by setting each element of the `userPassword` array to `'\0'`, and the index is set to 0. This ensures that the password input starts from the beginning.

Please note that this modified code assumes that you are using a 4x4 keypad with the "*" key in the fourth column and fourth row. If your keypad layout is different, you may need to adjust the `hexaKeys` array accordingly.

I hope this helps! Let me know if you have any further questions.