esp2_keypad.ino File Reference

Keypad-based PIN entry controller with MQTT backend integration. More...

#include <Arduino.h>
#include <Keypad.h>
#include <ArduinoJson.h>
#include <WiFiMqttClient.h>

Include dependency graph for esp2_keypad.ino:

Go to the source code of this file.

Functions
void	callback (char *topic, byte *payload, unsigned int length)
	MQTT message callback handler.
void	setup ()
	Arduino setup function.
void	reset_code ()
	Resets the PIN input buffer and index.
void	publishTap ()
	Publishes keypad tap feedback via MQTT.
void	loop ()
	Arduino main loop.

Variables
WifiMqttClient	net
	WiFi + MQTT client wrapper.
constexpr char	WIFI_SSID [] = "Mathias2.4"
	WiFi SSID.
constexpr char	WIFI_PASS [] = "mrbombasticcallmefantastic"
	WiFi password.
constexpr char	MQTT_HOST [] = "maqiatto.com"
	MQTT broker hostname.
constexpr uint16_t	MQTT_PORT = 1883
	MQTT broker port.
constexpr char	MQTT_USER [] = "hectorfoss@gmail.com"
	MQTT username.
constexpr char	MQTT_PASS [] = "potter"
	MQTT password.
constexpr char	DEVICE_ID [] = "door1"
	Unique device identifier used in MQTT topics.
const byte	ROWS = 4
	Number of rows in the keypad matrix.
const byte	COLS = 4
	Number of columns in the keypad matrix.
char	keys [ROWS][COLS]
	Logical keypad layout.
byte	rowPins [ROWS] = {16, 5, 4, 0}
	GPIO pins connected to keypad rows.
byte	colPins [COLS] = {2, 14, 12, 13}
	GPIO pins connected to keypad columns.
Keypad	keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS)
	Keypad instance handling scanning and debouncing.
constexpr uint8_t	CODE_LENGTH = 4
	Required PIN length.
char	input [CODE_LENGTH+1] = {0}
	Input buffer for PIN digits.
uint8_t	currentIdx = 0
	Current index into the PIN buffer.
bool	kpEnabled = false
	Indicates whether keypad input is currently enabled.

Detailed Description

Keypad-based PIN entry controller with MQTT backend integration.

Definition in file esp2_keypad.ino.