CHAPTER 5 ■ IOT PATTERNS: REALTIME CLIENTS
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Standard Functions
The code in the fifth and final section implements Arduino’s standard setup() and
loop() functions .
In the setup() function, you initialize the serial port, connect to the Internet, and
calibrate the sensor for correct readings, as shown in Listing 5-6 .
Listing 5-6. Code for Standard Arduino Function—setup()
void setup()
{
// Initialize serial port
Serial.begin(9600);
// Connect Arduino to internet
connectToInternet();
// Calibrate motion sensor
calibrateSensor();
}
In the loop() function, you only need to call the readSensorData() function , as
shown in Listing 5-7 .
Listing 5-7. Code for Standard Arduino Function—loop()
void loop()
{
//Read sensor data
readSensorData();
}
Your Arduino code is now complete.
Code (Android)
This section provides instructions for developing an Android app that will fulfill the
following two requirements:
•
Display a notification in realtime whenever motion is detected by
the sensor
•
Create a simple screen where app users can see when last motion
was detected