pulse_width.h

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#pragma once
 
#include "esphome/core/component.h"
#include "esphome/core/hal.h"
#include "esphome/components/sensor/sensor.h"
 
namespace esphome::pulse_width {
 
class PulseWidthSensorStore {
 public:
  void setup(InternalGPIOPin *pin) {
    pin->setup();
    this->pin_ = pin->to_isr();
    this->last_rise_ = micros();
    pin->attach_interrupt(&PulseWidthSensorStore::gpio_intr, this, gpio::INTERRUPT_ANY_EDGE);
  }
  static void gpio_intr(PulseWidthSensorStore *arg);
  uint32_t get_pulse_width_us() const { return this->last_width_; }
  float get_pulse_width_s() const { return this->last_width_ / 1e6f; }
  uint32_t get_last_rise() const { return last_rise_; }
 
 protected:
  ISRInternalGPIOPin pin_;
  volatile uint32_t last_width_{0};
  volatile uint32_t last_rise_{0};
};
 
class PulseWidthSensor : public sensor::Sensor, public PollingComponent {
 public:
  void set_pin(InternalGPIOPin *pin) { pin_ = pin; }
  void setup() override { this->store_.setup(this->pin_); }
  void dump_config() override;
  void update() override;
 
 protected:
  PulseWidthSensorStore store_;
  InternalGPIOPin *pin_;
};
 
}  // namespace esphome::pulse_width