arduino-sketches/door-sensor/door-sensor.ino
2025-04-10 10:34:47 -03:00

112 lines
3.3 KiB
C++

#include <IRremote.hpp>
#include "pitches.h"
#define IR_RECEIVE_PIN 7
#include <TimerFreeTone.h>
#define TONE_PIN 8
const int DOOR_SENSOR_PIN = 13;
// notes in the melody:
int melody[] = {
NOTE_C4, NOTE_G3, NOTE_G3, NOTE_A3, NOTE_G3, 0, NOTE_B3, NOTE_C4
};
// note durations: 4 = quarter note, 8 = eighth note, etc.:
int noteDurations[] = {
4, 8, 8, 4, 4, 4, 4, 4
};
int melody2[] = { 262, 196, 196, 220, 196, 0, 247, 262 };
int duration[] = { 250, 125, 125, 250, 250, 250, 250, 250 };
int currentDoorState; // current state of door sensor
int lastDoorState; // previous state of door sensor
void setup()
{
Serial.begin(115200); // // Establish serial communication
IrReceiver.begin(IR_RECEIVE_PIN, ENABLE_LED_FEEDBACK); // Start the receiver
pinMode(DOOR_SENSOR_PIN, INPUT_PULLUP);
currentDoorState = digitalRead(DOOR_SENSOR_PIN); // read state
}
int lastCmd;
unsigned long lastTime;
void loop() {
handleDoor();
if (IrReceiver.decode()) {
// Serial.println(IrReceiver.decodedIRData.decodedRawData, HEX); // Print "old" raw data
// IrReceiver.printIRResultShort(&Serial); // Print complete received data in one line
// IrReceiver.printIRSendUsage(&Serial); // Print the statement required to send this data
// if(lastCmd == IrReceiver.decodedIRData.command && lastTime + 2000 > millis() )
// {
// IrReceiver.resume();
// return;
// }
switch(IrReceiver.decodedIRData.command)
{
case 67:
Serial.println("Play");
playTone();
break;
default:
Serial.print("unk: ");
Serial.println(IrReceiver.decodedIRData.command);
}
//IrReceiver.printIRResultShort(&Serial); // Print complete received data in one line
// lastTime = millis();
// lastCmd=IrReceiver.decodedIRData.command;
//Serial.println(IrReceiver.decodedIRData.command);
IrReceiver.resume();
}
}
void handleDoor(){
lastDoorState = currentDoorState; // save the last state
currentDoorState = digitalRead(DOOR_SENSOR_PIN); // read new state
if (lastDoorState == LOW && currentDoorState == HIGH) { // state change: LOW -> HIGH
Serial.println("The door-opening event is detected");
playTone();
}
else
if (lastDoorState == HIGH && currentDoorState == LOW) { // state change: HIGH -> LOW
Serial.println("The door-closing event is detected");
// TODO: turn off alarm, light or send notification ...
}
}
void playTone(){
// // iterate over the notes of the melody:
// for (int thisNote = 0; thisNote < 8; thisNote++) {
// // to calculate the note duration, take one second divided by the note type.
// //e.g. quarter note = 1000 / 4, eighth note = 1000/8, etc.
// int noteDuration = 1000 / noteDurations[thisNote];
// tone(8, melody[thisNote], noteDuration);
// // to distinguish the notes, set a minimum time between them.
// // the note's duration + 30% seems to work well:
// int pauseBetweenNotes = noteDuration * 1.30;
// delay(pauseBetweenNotes);
// // stop the tone playing:
// noTone(8);
// }
for (int thisNote = 0; thisNote < 8; thisNote++) { // Loop through the notes in the array.
TimerFreeTone(TONE_PIN, melody2[thisNote], duration[thisNote]); // Play thisNote for duration.
delay(50); // Short delay between notes.
}
}