Serial Communications

Communicating with Others

Arduino can use same USB cable for programming and

Serial Communications

Sends “Hello world!” to your computer
Click on “Serial Monitor” button

Arduino Communications

Is just serial communications
Arduino doesn’t really do USB
It really is

Serial Communications

“Serial” because data is broken down into bits, each sent

Arduino & USB-to-serial

A standard Arduino has a single hardware serial port
But

Arduino Mini

Arduino Mini separates the two circuits

Arduino Mini USB adapter

Arduino Mini

Arduino Mega

The Arduino Mega has four hardware serial ports
Only one of

Arduino to Computer

USB is totally optional for Arduino, but it makes

Arduino & USB

Since Arduino is all about serial, and not USB,

Serial Message Protocol

Where each message begins and ends?
Sides must agree how

Sending Debug Information from Arduino to Your Computer

This sketch prints sequential

Baud rate

First call the
Serial.begin()
The function takes a single parameter: the desired

Sending information

You can display text using the Serial.print()or Serial.println() function

println() –

Strings

String message = "This string"; //C++ type strings
message.length() //provides thenumber of

Comparing C type Strings

char str1[ ] = "left";
char str2[ ] =

String Object

charAt(n) or [n] - Access a particular character of the

Mathematical Operators

Comparing Character and Numeric Values

Logical and Bitwise operators
Logical operators
Bitwise operators

Combining Operations and Assignment

Advanced Mathematical Operators

Other Useful Operators

Functions

Functions are declared by first declaring the function type. This is

Receiving Serial Data in Arduino

Serial.available() - Get the number of bytes

Controlling Arduino

int ledPin = 13; // choose a pin for LED
int

Tasks Part 1

Concatenate two strings (Name, Surname) with space between them

Tasks Part 2

Write function that sorts array of integers
Read the number