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https://github.com/esphome/esphome.git
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101 lines
3 KiB
C++
101 lines
3 KiB
C++
#include "remote_transmitter.h"
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#include "esphome/core/log.h"
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#include "esphome/core/application.h"
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#ifdef USE_ESP8266
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namespace esphome {
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namespace remote_transmitter {
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static const char *const TAG = "remote_transmitter";
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void RemoteTransmitterComponent::setup() {
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this->pin_->setup();
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this->pin_->digital_write(false);
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}
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void RemoteTransmitterComponent::dump_config() {
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ESP_LOGCONFIG(TAG, "Remote Transmitter...");
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ESP_LOGCONFIG(TAG, " Carrier Duty: %u%%", this->carrier_duty_percent_);
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LOG_PIN(" Pin: ", this->pin_);
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}
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void RemoteTransmitterComponent::calculate_on_off_time_(uint32_t carrier_frequency, uint32_t *on_time_period,
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uint32_t *off_time_period) {
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if (carrier_frequency == 0) {
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*on_time_period = 0;
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*off_time_period = 0;
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return;
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}
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uint32_t period = (1000000UL + carrier_frequency / 2) / carrier_frequency; // round(1000000/freq)
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period = std::max(uint32_t(1), period);
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*on_time_period = (period * this->carrier_duty_percent_) / 100;
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*off_time_period = period - *on_time_period;
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}
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void RemoteTransmitterComponent::await_target_time_() {
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const uint32_t current_time = micros();
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if (this->target_time_ == 0) {
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this->target_time_ = current_time;
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} else if (this->target_time_ > current_time) {
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delayMicroseconds(this->target_time_ - current_time);
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}
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}
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void RemoteTransmitterComponent::mark_(uint32_t on_time, uint32_t off_time, uint32_t usec) {
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this->await_target_time_();
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this->pin_->digital_write(true);
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const uint32_t target = this->target_time_ + usec;
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if (this->carrier_duty_percent_ < 100 && (on_time > 0 || off_time > 0)) {
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while (true) { // Modulate with carrier frequency
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this->target_time_ += on_time;
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if (this->target_time_ >= target)
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break;
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this->await_target_time_();
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this->pin_->digital_write(false);
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this->target_time_ += off_time;
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if (this->target_time_ >= target)
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break;
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this->await_target_time_();
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this->pin_->digital_write(true);
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}
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}
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this->target_time_ = target;
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}
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void RemoteTransmitterComponent::space_(uint32_t usec) {
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this->await_target_time_();
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this->pin_->digital_write(false);
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this->target_time_ += usec;
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}
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void RemoteTransmitterComponent::send_internal(uint32_t send_times, uint32_t send_wait) {
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ESP_LOGD(TAG, "Sending remote code...");
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uint32_t on_time, off_time;
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this->calculate_on_off_time_(this->temp_.get_carrier_frequency(), &on_time, &off_time);
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this->target_time_ = 0;
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for (uint32_t i = 0; i < send_times; i++) {
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for (int32_t item : this->temp_.get_data()) {
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if (item > 0) {
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const auto length = uint32_t(item);
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this->mark_(on_time, off_time, length);
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} else {
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const auto length = uint32_t(-item);
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this->space_(length);
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}
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App.feed_wdt();
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}
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this->await_target_time_(); // wait for duration of last pulse
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this->pin_->digital_write(false);
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if (i + 1 < send_times)
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this->target_time_ += send_wait;
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}
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}
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} // namespace remote_transmitter
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} // namespace esphome
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#endif
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