| title | categories | subCategories | ||
|---|---|---|---|---|
bitWrite() |
|
|
Writes a bit of a numeric variable.
bitWrite(x, n, b)
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).
x: the value of the numeric variable after the bit at position n is written.
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);
while (!Serial) {} // wait for serial port to connect. Needed for native USB port only
byte x = 0b10000000; // the 0b prefix indicates a binary constant
Serial.println(x, BIN); // 10000000
bitWrite(x, 0, 1); // write 1 to the least significant bit of x
Serial.println(x, BIN); // 10000001
Serial.println(bitWrite(x, 1, 1), BIN); // 10000011
}
void loop() {}