Store the time on HC-06

Projects Programming
1

Hi, I'm on a school project and my task is to create an app on appinventor to see when a cat entered or left the house, I did the code to see if the cat is in or out of the house but now i have to show the time when he entered/left the house but i don't know how to do it, can you help me please ?
On arduino i did this code to see if the cat is in/out :

#include <SoftwareSerial.h>
 const int BPRiri = 8;
 const int BPFifi = 9;

int dataFromBt;
 
SoftwareSerial bluetooth(3, 2);
 
void setup()
{
 Serial.begin(9600); // Begin the serial monitor at 9600bps

 bluetooth.begin(9600); // Start bluetooth serial at 9600
  bluetooth.print("Bluetooth connecte !");
}
 
void loop()
{
  
  int CRiri = digitalRead(BPRiri);
  int CFifi = digitalRead(BPFifi);
  
  if (CRiri == HIGH && CFifi == HIGH){
   bluetooth.print("1");
   Serial.println("Riri, Fifi"); } 
   
 if (CRiri == LOW && CFifi == LOW) {
   bluetooth.print("0");
   Serial.println("Personne"); }
   
 if (CRiri == HIGH && CFifi == LOW){
   bluetooth.print("2");
   Serial.println("Riri"); } 
   
 if (CRiri == LOW && CFifi == HIGH){
   bluetooth.print("3");
   Serial.println("Fifi"); }
}

"Riri" and "Fifi" are the cats

2

Have you got a Real Time Clock (RTC) module ?

3

No I only have a HC-06 and an USB Serial

4

Without an RTC you are going to have to rely on the internal timing of the Arduino.

The first step is to print the value of millis() when you print the in/out messages. millis() is the number of milliseconds since the Arduino was powered up or reset so you can derive the elapsed time from it, but you need a start time to work with.

5

Hi,
You should just send a message from the arduino to the app and get the current time within the app.
It can be done with the Clock component (Sensors) in app inventor.