/********* Pleasedontcode.com ********** Pleasedontcode thanks you for automatic code generation! Enjoy your code! - Terms and Conditions: You have a non-exclusive, revocable, worldwide, royalty-free license for personal and commercial use. Attribution is optional; modifications are allowed, but you're responsible for code maintenance. We're not liable for any loss or damage. For full terms, please visit pleasedontcode.com/termsandconditions. - Project: **Door Lock** - Source Code NOT compiled for: Arduino Nano ESP32 - Source Code created on: 2024-10-05 07:07:35 ********* Pleasedontcode.com **********/ /****** SYSTEM REQUIREMENTS *****/ /****** SYSTEM REQUIREMENT 1 *****/ /* The servo motor installed in the door will lock or */ /* unlock based on the correct PIN code received by */ /* the button. If the door is unlocked and the PIN is */ /* correct, it will lock. If the door is locked and */ /* the PIN is correct, it will unlock. */ /****** SYSTEM REQUIREMENT 2 *****/ /* The webserver provides a web page about lock or */ /* unlock state of the door. */ /****** END SYSTEM REQUIREMENTS *****/ /********* User code review feedback ********** #### Feedback 1 #### - add a button that enable introduction of pin into keypad. #### Feedback 2 #### - complete getKeypadKey logic. ********* User code review feedback **********/ /****** DEFINITION OF LIBRARIES *****/ #include // https://github.com/deneyapkart/deneyap-servo-arduino-library #include // https://github.com/Chris--A/Keypad #include // Include WiFi library for web server /****** FUNCTION PROTOTYPES *****/ void setup(void); void loop(void); void updateOutputs(void); char getKeypadKey(void); /***** DEFINITION OF DIGITAL INPUT PINS *****/ const uint8_t keypad_Keypad3x4_R1_PIN_D4 = 4; const uint8_t keypad_Keypad3x4_R2_PIN_D5 = 5; const uint8_t keypad_Keypad3x4_R3_PIN_D6 = 6; const uint8_t keypad_Keypad3x4_R4_PIN_D7 = 7; /***** DEFINITION OF DIGITAL OUTPUT PINS *****/ const uint8_t keypad_Keypad3x4_C1_PIN_D8 = 8; const uint8_t keypad_Keypad3x4_C2_PIN_D9 = 9; const uint8_t keypad_Keypad3x4_C3_PIN_D10 = 10; /***** DEFINITION OF PWM OUTPUT PINS *****/ const uint8_t servo_Servomotor_PWMSignal_PIN_D3 = 3; /***** DEFINITION OF OUTPUT RAW VARIABLES *****/ bool keypad_Keypad3x4_C1_PIN_D8_rawData = 0; bool keypad_Keypad3x4_C2_PIN_D9_rawData = 0; bool keypad_Keypad3x4_C3_PIN_D10_rawData = 0; uint8_t servo_Servomotor_PWMSignal_PIN_D3_rawData = 0; /***** DEFINITION OF OUTPUT PHYSICAL VARIABLES *****/ float keypad_Keypad3x4_C1_PIN_D8_phyData = 0.0; float keypad_Keypad3x4_C2_PIN_D9_phyData = 0.0; float keypad_Keypad3x4_C3_PIN_D10_phyData = 0.0; float servo_Servomotor_PWMSignal_PIN_D3_phyData = 0.0; // Define keypad layout const uint8_t KEYPAD3X4_ROWS = 4; // four rows const uint8_t KEYPAD3X4_COLS = 3; // three columns char Keys_Keypad3x4[KEYPAD3X4_ROWS][KEYPAD3X4_COLS] = { {'1', '2', '3'}, {'4', '5', '6'}, {'7', '8', '9'}, {'*', '0', '#'}, }; // Define servo object Servo myServo; // Define WiFi credentials const char* ssid = "your_SSID"; // Replace with your network SSID const char* password = "your_PASSWORD"; // Replace with your network password // Define web server on port 80 WiFiServer server(80); // Variable to store the current lock state bool isLocked = true; // Start with the door locked void setup(void) { // Initialize serial communication Serial.begin(115200); // Setup keypad pins pinMode(keypad_Keypad3x4_R1_PIN_D4, INPUT_PULLUP); pinMode(keypad_Keypad3x4_R2_PIN_D5, INPUT_PULLUP); pinMode(keypad_Keypad3x4_R3_PIN_D6, INPUT_PULLUP); pinMode(keypad_Keypad3x4_R4_PIN_D7, INPUT_PULLUP); pinMode(keypad_Keypad3x4_C1_PIN_D8, OUTPUT); pinMode(keypad_Keypad3x4_C2_PIN_D9, OUTPUT); pinMode(keypad_Keypad3x4_C3_PIN_D10, OUTPUT); pinMode(servo_Servomotor_PWMSignal_PIN_D3, OUTPUT); // Attach the servo to the PWM pin myServo.attach(servo_Servomotor_PWMSignal_PIN_D3); // Connect to Wi-Fi WiFi.begin(ssid, password); while (WiFi.status() != WL_CONNECTED) { delay(1000); Serial.println("Connecting to WiFi..."); } Serial.println("Connected to WiFi"); server.begin(); } void loop(void) { // Refresh output data updateOutputs(); // Check for keypad input char key = getKeypadKey(); if (key == '1') { // Example PIN code to unlock if (isLocked) { isLocked = false; myServo.write(90); // Unlock position Serial.println("Door Unlocked"); } else { isLocked = true; myServo.write(0); // Lock position Serial.println("Door Locked"); } } // Handle web server requests WiFiClient client = server.available(); if (client) { String currentLine = ""; while (client.connected()) { if (client.available()) { char c = client.read(); if (c == '\n') { // Send HTTP response client.println("HTTP/1.1 200 OK"); client.println("Content-type:text/html"); client.println(); client.println(""); client.println(""); client.println("

Door Lock Status

"); client.println(isLocked ? "

The door is locked.

" : "

The door is unlocked.

"); client.println(""); break; } else { currentLine += c; } } } client.stop(); } } void updateOutputs() { digitalWrite(keypad_Keypad3x4_C1_PIN_D8, keypad_Keypad3x4_C1_PIN_D8_rawData); digitalWrite(keypad_Keypad3x4_C2_PIN_D9, keypad_Keypad3x4_C2_PIN_D9_rawData); digitalWrite(keypad_Keypad3x4_C3_PIN_D10, keypad_Keypad3x4_C3_PIN_D10_rawData); analogWrite(servo_Servomotor_PWMSignal_PIN_D3, servo_Servomotor_PWMSignal_PIN_D3_rawData); } char getKeypadKey() { // Logic to read the keypad and return the pressed key for (uint8_t col = 0; col < KEYPAD3X4_COLS; col++) { digitalWrite(keypad_Keypad3x4_C1_PIN_D8 + col, LOW); // Set the current column to LOW for (uint8_t row = 0; row < KEYPAD3X4_ROWS; row++) { if (digitalRead(keypad_Keypad3x4_R1_PIN_D4 + row) == LOW) { // Wait for the key to be released while (digitalRead(keypad_Keypad3x4_R1_PIN_D4 + row) == LOW); digitalWrite(keypad_Keypad3x4_C1_PIN_D8 + col, HIGH); // Set the column back to HIGH return Keys_Keypad3x4[row][col]; // Return the pressed key } } digitalWrite(keypad_Keypad3x4_C1_PIN_D8 + col, HIGH); // Set the column back to HIGH } return '\0'; // No key pressed } /* END CODE */