bitRead()

Description

Reads a bit of a number.

Syntax

bitRead(x, n)

Parameter Values

  • x: the number from which to read.
  • n: which bit to read, starting at 0 for the least-significant (rightmost) bit.

Return Values

  • The value of the bit (0 or 1).

Example Code

void setup() { Serial.begin(9600); byte x = 0b10000101; // the 0b prefix indicates a binary constant Serial.println(x, BIN); // 10000101 for (int i = 0; i < 8; i++) Serial.print(bitRead(x, i)); // print bits one by one } void loop() {}

The result in Serial Monitor:

Newbiely | Arduino IDE 2.3.8
──
File
Edit
Sketch
Tools
Help
Arduino Uno
Newbiely.ino
···
8 Serial.println("Hello World!");
Output
Serial Monitor
Message (Enter to send message to 'Arduino Uno' on 'COM15')
New Line
9600 baud
10000101 10100001
Ln 11, Col 1
Arduino Uno on COM15
2

See Also

ARDUINO BUY RECOMMENDATION

Arduino UNO R3
Arduino Starter Kit
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