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DYIRDaikinSend.cpp
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DYIRDaikinSend.cpp
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#include "DYIRDaikinSend.h"
void DYIRDaikinSend::begin()
{
IRpin = -1;
enableIROut(DYIRDAIKIN_FREQUENCY);
}
void DYIRDaikinSend::begin(int IRsendPin)
{
IRpin = IRsendPin;
enableIROut(DYIRDAIKIN_FREQUENCY);
pinMode(IRpin, OUTPUT);
digitalWrite(IRpin, LOW); // When not sending PWM, we want it low
}
void DYIRDaikinSend::sendDaikin(unsigned char buf[], int len, int start) {
int data2;
sendIRWarm();
enableIROut(DYIRDAIKIN_FREQUENCY);
mark(DYIRDAIKIN_HDR_MARK);
space(DYIRDAIKIN_HDR_SPACE);
for (int i = start; i < start+len; i++) {
data2=buf[i];
for (int j = 0; j < 8; j++) {
if ((1 << j & data2)) {
mark(DYIRDAIKIN_ONE_MARK);
space(DYIRDAIKIN_ONE_SPACE);
}
else {
mark(DYIRDAIKIN_ZERO_MARK);
space(DYIRDAIKIN_ZERO_SPACE);
}
}
}
mark(DYIRDAIKIN_ONE_MARK);
space(DYIRDAIKIN_ZERO_SPACE);
}
void DYIRDaikinSend::sendDaikinWake() {
enableIROut(38);
space(DYIRDAIKIN_ZERO_MARK);
//
mark(DYIRDAIKIN_ZERO_MARK);
space(DYIRDAIKIN_ZERO_MARK);
//
mark(DYIRDAIKIN_ZERO_MARK);
space(DYIRDAIKIN_ZERO_MARK);
//
mark(DYIRDAIKIN_ZERO_MARK);
space(DYIRDAIKIN_ZERO_MARK);
//
mark(DYIRDAIKIN_ZERO_MARK);
space(DYIRDAIKIN_ZERO_MARK);
//
mark(DYIRDAIKIN_ZERO_MARK);
space(DYIRDAIKIN_ZERO_MARK);
}
void DYIRDaikinSend::sendIRWarm() {
digitalWrite(IRpin, HIGH);
delayMicrosecondsEnhance(100);
digitalWrite(IRpin, LOW);
delayMicrosecondsEnhance(5);
}
void DYIRDaikinSend::sendRaw(unsigned int buf[], int len, int hz)
{
enableIROut(hz);
for (int i = 0; i < len; i++) {
if (i & 1) {
space(buf[i]);
}
else {
mark(buf[i]);
}
}
space(0); // Just to be sure
}
void DYIRDaikinSend::mark(int time) {
if (IRpin == -1) {
//Serial.println();
//Serial.println("PWM");
TIMER_ENABLE_PWM; // Enable pin 3 PWM output
delayMicrosecondsEnhance(time);
} else {
//Serial.println();
//Serial.print("SOFT:");
//Serial.println(halfPeriodicTime);
unsigned long beginTime = micros();
unsigned long endTime = (unsigned long)time;
unsigned long nowTime = micros();
while (nowTime - beginTime < endTime) {
digitalWrite(IRpin, HIGH);
//PORTD |= B00000100;
delayMicrosecondsEnhance(halfPeriodicTimeHigh);
digitalWrite(IRpin, LOW);
//PORTD &= B11111011;
delayMicrosecondsEnhance(halfPeriodicTimeLow);
nowTime = micros();
}
}
}
/* Leave pin off for time (given in microseconds) */
void DYIRDaikinSend::space(int time) {
if (IRpin == -1) {
TIMER_DISABLE_PWM; // Disable pin 3 PWM output
delayMicrosecondsEnhance(time);
} else {
digitalWrite(IRpin, LOW);
if (time > 0) {
delayMicrosecondsEnhance(time);
}
}
}
//~ #endif
void DYIRDaikinSend::enableIROut(int khz) {
if (IRpin == -1) {
pinMode(TIMER_PWM_PIN, OUTPUT);
TIMER_CONFIG_KHZ(khz);
} else {
int halfPeriodicTime = (500/khz); // T = 1/f but we need T/2 in microsecond and f is in kHz
int periodicTime = (1000/khz);
#if (AVR_HARDWARE_PWM || defined(DY_IRDAIKIN_SOFTIR))
#if (defined(__AVR_ATmega2560__))
halfPeriodicTimeHigh = 4;
#elif (defined(__AVR_ATmega32U4__))
halfPeriodicTimeHigh = 7;
#else
halfPeriodicTimeHigh = 8;
#endif
#else
halfPeriodicTimeHigh = (periodicTime / 4) * 3;
#endif
digitalWrite(IRpin, LOW);
// 38 kHz -> T = 26.31 microsec (periodic time), half of it is 13
#if (AVR_HARDWARE_PWM || defined(DY_IRDAIKIN_SOFTIR))
#if (defined(__AVR_ATmega2560__))
halfPeriodicTimeLow = 0;
#elif (defined(__AVR_ATmega32U4__))
halfPeriodicTimeLow = 0;
#else
halfPeriodicTimeLow = 0;
#endif
#else
halfPeriodicTimeLow = (periodicTime / 4) + (periodicTime % 4);
#endif
}
}
void DYIRDaikinSend::delayMicrosecondsEnhance(uint32_t usec)
{
#if AVR_HARDWARE_PWM
if (usec > 4) {
unsigned long tStart = micros();
unsigned long tEnd = tStart + usec - 4;
#else
if (usec > 2) {
unsigned long tStart = micros();
unsigned long tEnd = tStart + usec - 2;
#endif
if (tEnd < tStart) { // Check if overflow
while ( micros() > tStart ) {} // wait until overflow
}
while ( micros() < tEnd ) {} // normal wait
}
}