Code below set third pin to HIGH without changing the state of any of the other pins
bitSet syntax: bitSet(x, n)
- x: the numeric variable whose bit to set
- n: which bit to set, starting at 0 for the least-significant (rightmost) bit
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//initialized all pins to LOW |
Code below set third pin to LOW without changing the state of any of the other pins
bitClear syntax: bitClear(x, n)
- x: the numeric variable whose bit to clear
- n: which bit to clear, starting at 0 for the least-significant (rightmost) bit
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//initialized all pins to HIGH //set the third pin LOW |
Code below set each pin as LOW or HIGH without changing the state of any of the other pins
bitWrite Syntax: 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)
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byte pinState= 0; //initialized all pins to LOW (B00000000)
bitWrite(pinState, 0, HIGH); //set first pin to HIGH, pinState = B00000001 bitWrite(pinState, 3, HIGH); //set third pin to HIGH, pinState = B00001001 bitWrite(pinState, 0, LOW); //set first pin to LOW, pinState = B00001000
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Reads a bit of a number.
bitRead Syntax: bitRead(x, n)
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x: the number from which to read
-
n: which bit to read, starting at 0 for the least-significant (rightmost) bit
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byte pinState = B10101010;
for (int i=0; i<8; i++) {
theBit = bitRead(pinState, i);
}
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