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bitWrite()
Description
Writes a bit of a numeric variable.
Syntax
bitWrite(x, n, b)
Parameter Values
- x: the numeric variable to which to write.
- n: which bit of the number to write, starting at 0 for the least-significant (rightmost) bit.
- b: the value to write to the bit (0 or 1).
Return Values
- Nothing
Example Code
Demonstrates the use of bitWrite by printing the value of a variable to the Serial Monitor before and after the use of bitWrite().
void setup() {
Serial.begin(9600);
byte x = 0b10000000; // the 0b prefix indicates a binary constant
Serial.print("BEFORE: ");
Serial.println(x, BIN); // 10000000
bitWrite(x, 0, 1); // write 1 to the least significant bit of x
Serial.print("AFTER: ");
Serial.println(x, BIN); // 10000001
}
void loop() {}
The result in Serial Monitor:
COM6
BEFORE: 10000000
AFTER: 10000001
Autoscroll
Clear output
9600 baud
Newline
See Also
- Language : bit()
- Language : bitClear()
- Language : bitRead()
- Language : bitSet()
- Language : highByte()
- Language : lowByte()
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