void x10Class::sendBits(byte cmd, byte numBits, byte isStartCode) {
byte thisBit; // byte for shifting bits
// iterate the number of bits to be shifted:
for(int i=1; i<=numBits; i++) {
// wait for a zero crossing change
waitForZeroCross(zeroCrossingPin, 1);
// shift off the last bit of the command:
thisBit = cmd & (1 << (numBits - i));
// repeat once for each phase:
for (int phase = 0; phase < 3; phase++) {
// set the data Pin:
digitalWrite(txPin, thisBit);
delayMicroseconds(BIT_LENGTH);
// clear the data pin:
digitalWrite(txPin, LOW);
delayMicroseconds(BIT_DELAY);
}
// if this command is a start code, don't
// send its complement. Otherwise do:
if(!isStartCode) {
// wait for zero crossing:
waitForZeroCross(zeroCrossingPin, 1);
for (int phase = 0; phase < 3; phase++) {
// set the data pin:
digitalWrite(txPin, !thisBit);
delayMicroseconds(BIT_LENGTH);
// clear the data pin:
digitalWrite(txPin, LOW);
delayMicroseconds(BIT_DELAY);
}
}
}
}
/*
Writes an X10 command out to the X10 modem
*/
void x10Class::sendCommand(byte houseCode, byte numberCode) {
byte startCode = 0b1110; // every X10 command starts with this
// send the three parts of the command:
sendBits(startCode, 4, true);
sendBits(houseCode, 4, false);
sendBits(numberCode, 5, false);
// if this isn't a bright or dim command, it should be followed by
// a delay of 3 power cycles (or 6 zero crossings):
if ((numberCode != BRIGHT) && (numberCode != DIM)) {
waitForZeroCross(zeroCrossingPin, 6);
}
}
/*
Writes an X10 command out to the X10 modem
*/
void x10::write(byte houseCode, byte numberCode, int numRepeats) {
byte startCode = B1110; // every X10 command starts with this
// repeat as many times as requested:
for (int i = 0; i < numRepeats; i++) {
// send the three parts of the command:
sendBits(startCode, 4, true);
sendBits(houseCode, 4, false);
sendBits(numberCode, 5, false);
}
// if this isn't a bright or dim command, it should be followed by
// a delay of 3 power cycles (or 6 zero crossings):
if ((numberCode != BRIGHT) && (numberCode != DIM)) {
waitForZeroCross(this->zeroCrossingPin, 6);
}
}
/*
Writes an X10 command out to the X10 modem
*/
void x10::write(byte houseCode, byte numberCode, int numRepeats) {
byte startCode = B1110; // every X10 command starts with this
if (rcve_pin>0) { detachInterrupt(0); }
// repeat as many times as requested:
for (int i = 0; i < numRepeats; i++) {
// send the three parts of the command:
sendBits(startCode, 4, true);
sendBits(houseCode, 4, false);
sendBits(numberCode, 5, false);
}
// if this isn't a bright or dim command, it should be followed by
// a delay of 3 power cycles (or 6 zero crossings):
if ((numberCode != BRIGHT) && (numberCode != DIM)) {
waitForZeroCross(this->zeroCrossingPin, 6);
}
if (rcve_pin>0) { attachInterrupt(0,x10_Check_Rcvr_wrapper,CHANGE); } // (pin 2) trigger zero cross
}