1. Lecture 2-2: Arduino Programming
Dr. Kyung Eun Park
Summer 2017
Arduino Language Reference:

2. Arduino Programming Environment

3. Board Type Setting

4. Serial Port / COM Port

5. Arduino IDE Components

6. Parts of the Sketch

7. Operators Assignment Operator Equal Sign = : used to assign a value
== : used to compare values
if (a == 5)

8. Boolean Operators AND OR NOT && if ((a == 5) && (b == 10)) ||!
if (!isCompleted)

9. Variable Declaration Syntax: Example: type variable_identifier;
type variable_identifier = value;
Example:
int num;
int sum = 0;
int i = j = 0;
int count = 0;
double avg = sum/count ;
char ch;
char chSep = ',';
boolean flag = false;

10. Arduino Function: setup()
This setup() function comes before the loop function
Need for all Arduino sketches
Syntax:
void setup() { … }

11. Arduino Function: pinMode(13,OUTPUT)
Digital pins can be used as INPUT, INPUT_PULLUP, or OUTPUT
Outputs are declared in setup().
Pin 13 is specified to behave as an output
Syntax:
pinMode(13, OUTPUT);
Declares digital pin #13 as an output

12. Arduino Function: Serial.begin(9600)
Serial communication begins in setup()
Syntax:
Serial.begin(9600);
Declares Serial communication at a baud (bit per second) rate of 9600.

13. Digital I/O Function: digitalWrite(12,HIGH)
Write a HIGH or a LOW value to a digital pin
5V (or 3.3V on 3.3V boards) for HIGH,
0V (ground) for LOW
Syntax:
digitalWrite(12, HIGH);
Sets pin #12 to HIGH

14. LED Program
Sets pin 13 to HIGH, makes a one-second-long delay, and sets the pin back to LOW

15. Use Examples_Basics_Blink

16. Blink Example: verify and upload

17. Arduino MEGA Board with Blink Example

18. Digital I/O Function: digitalRead(inPin)
Reads the value from a specified digital pin, either HIGH or LOW
Sets pin #13 to the same value as pin #7, declared as an input