52 lines
1.4 KiB
C++
52 lines
1.4 KiB
C++
#include <Arduino.h>
|
|
#ifdef ESP8266
|
|
#include <IRSender.h>
|
|
|
|
// Send IR using the 'bit banging' on ESP8266 using alternative ESP.getCycleCount() method
|
|
|
|
// Cycles compensation due to while cycles and polling ESP.getCycleCount()
|
|
#define ESP8266_CYCLES_COMPENSATION 33
|
|
|
|
IRSenderESP8266Alt::IRSenderESP8266Alt(uint8_t pin) : IRSender(pin)
|
|
{
|
|
pinMode(_pin, OUTPUT);
|
|
}
|
|
|
|
|
|
void IRSenderESP8266Alt::setFrequency(int frequency)
|
|
{
|
|
// Enables IR output. The khz value controls the modulation frequency in kilohertz.
|
|
_halfPeriodicTime = F_CPU / (frequency * 1000 * 2); // This one stores half period time in CPU ticks
|
|
}
|
|
|
|
|
|
// Send an IR 'mark' symbol, i.e. transmitter ON
|
|
void IRSenderESP8266Alt::mark(int markLength)
|
|
{
|
|
long beginning = micros();
|
|
|
|
while((int)(micros() - beginning) < markLength){
|
|
uint32_t periodStart = ESP.getCycleCount();
|
|
digitalWrite(_pin, HIGH);
|
|
while (ESP.getCycleCount() - periodStart < _halfPeriodicTime - ESP8266_CYCLES_COMPENSATION);
|
|
|
|
periodStart = ESP.getCycleCount();
|
|
digitalWrite(_pin, LOW);
|
|
while (ESP.getCycleCount() - periodStart < _halfPeriodicTime - ESP8266_CYCLES_COMPENSATION);
|
|
}
|
|
}
|
|
|
|
|
|
// Send an IR 'space' symbol, i.e. transmitter OFF
|
|
void IRSenderESP8266Alt::space(int spaceLength)
|
|
{
|
|
digitalWrite(_pin, LOW);
|
|
|
|
if (spaceLength < 16383) {
|
|
delayMicroseconds(spaceLength);
|
|
} else {
|
|
delay(spaceLength/1000);
|
|
}
|
|
}
|
|
#endif
|