Question

create and design the ultimate smart home using various senors, in C+ + program

Answer 1

smart home using various senors:

1)Window & door open and close:

// doors open or closed

#include <bits/stdc++.h>

using namespace std;

  

// Function to check whether 'n'

// has even number of factors or not

bool hasEvenNumberOfFactors(int n)

{

    int root_n = sqrt(n);

    // if 'n' is a perfect square

    // it has odd number of factors

    if ((root_n*root_n) == n)

        return false;

    // else 'n' has even

    // number of factors

    return true;

}

// Function to find and print

// status of each door

void printStatusOfDoors(int n)

{

    for (int i=1; i<=n; i++)

    {

        // If even number of factors

        // final status is closed

        if (hasEvenNumberOfFactors(i))

            cout << "closed" << " ";

        // else odd number of factors

        // final status is open

        else

            cout << "open" << " ";

    }

}

// Driver program

int main()

{

    nt n = 5;

    printStatusOfDoors(n);

    return 0;

}

2)WIRELESS DOORBELL:

#include <RH_ASK.h>

#include <SPI.h> // Not actually used but needed to compile

RH_ASK driver;

void setup()

{

Serial.begin(9600); // Debugging only

pinMode(5,INPUT);

if (!driver.init())

Serial.println("init failed");

}

void loop()

{

if(digitalRead(5)==HIGH){

const char *msg = "a";

driver.send((uint8_t *)msg, strlen(msg));

driver.waitPacketSent();

delay(200);

}

}

Doorbell Receiver Code

#include <RH_ASK.h>

#include <SPI.h> // Not actualy used but needed to compile

#include "pitches.h" //add Equivalent frequency for musical note

#include "themes.h" //add Note vale and duration

RH_ASK driver;

void setup()

{

Serial.begin(9600); // Debugging only

if (!driver.init())

Serial.println("init failed");

else

Serial.println("done");

}

void Play_Pirates()

{

for (int thisNote = 0; thisNote < (sizeof(Pirates_note)/sizeof(int)); thisNote++) {

int noteDuration = 1000 / Pirates_duration[thisNote];//convert duration to time delay

tone(8, Pirates_note[thisNote], noteDuration);

int pauseBetweenNotes = noteDuration * 1.05; //Here 1.05 is tempo, increase to play it slower

delay(pauseBetweenNotes);

noTone(8); //stop music on pin 8

}

}

void loop()

{

uint8_t buf[1];

uint8_t buflen = sizeof(buf);

if (driver.recv(buf, &buflen)) // Non-blocking

{

Serial.println("Selected -> 'He is a Pirate' ");  

Play_Pirates();

Serial.println("stop");

}

}

3)Turning LED on and off with C++:

#include <Arduino\SerialClass.h>
#include "Send.h"
#include "led.h"

namespace ledtest {
Serial* SP = new Serial("COM3");

[STAThread]
void main(array<String^>^ args) {

Application::EnableVisualStyles();
Application::SetCompatibleTextRenderingDefault(false);

ledtest::led form;
Application::Run(%form);
}

void sendState(int state) {
if (state == 1)
SP->WriteData("1", 1);
if (state == 0)
SP->WriteData("0", 1);
}

void readState() {
char* iState;

while (SP->IsConnected()) {
SP->ReadData(iState, 255);
printf(iState);
}
}

The button click events are as follows:

private: System::Void btnHigh_Click(System::Object^ sender, System::EventArgs^ e) {
ledtest::sendState(1);
}
private: System::Void btnLow_Click(System::Object^ sender, System::EventArgs^ e) {
ledtest::sendState(0);
}