Arduino - Functions - Functions allow structuring the programs in segments of code to perform individual tasks. The typical case for creating a function is when one needs to perform.

Description

1. Serial: serial port object. See the list of available serial ports for each board on the Serial main page. Speed: in bits per second (baud). Allowed data types: long. Config: sets data, parity, and stop bits. Valid values are: SERIAL5N1 SERIAL6N1 SERIAL7N1 SERIAL8N1 (the default) SERIAL5N2 SERIAL6N2 SERIAL7N2 SERIAL8N2 SERIAL5E1: even.
2. IJTSRD, Development of Android Controlled AC Dim Light, by Zaw Min Min Htun.

Serial); // Wait until Serial is ready - Leonardo Serial.println('Enter LED Number 0 to 7 or 'x' to clear'); Firstly, we have the command 'Serial.begin(9600)'. This starts serial communication, so that the Arduino can send out commands through the USB connection. As of Arduino IDE 1.0, serial transmission is asynchronous. If there is enough empty space in the transmit buffer, Serial.write will return before any characters are transmitted over serial. If the transmit buffer is full then Serial.write will block until there is enough space in the buffer.

Writes binary data to the serial port. This data is sent as a byte or series of bytes; to send the characters representing the digits of a number use the print() function instead.

Syntax

Serial.write(val)
Serial.write(str)
Serial.write(buf, len)

Serial In Arduino

Parameters

Serial: serial port object. See the list of available serial ports for each board on the Serial main page.
val: a value to send as a single byte.
str: a string to send as a series of bytes.
buf: an array to send as a series of bytes.
len: the number of bytes to be sent from the array.

Returns

Serial Output Arduino

write() will return the number of bytes written, though reading that number is optional. Data type: size_t.