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44 lines
1.2 KiB
C++
44 lines
1.2 KiB
C++
#pragma once
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#include "esphome/core/component.h"
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#include "esphome/core/hal.h"
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#include "esphome/components/sensor/sensor.h"
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namespace esphome {
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namespace pulse_width {
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/// Store data in a class that doesn't use multiple-inheritance (vtables in flash)
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class PulseWidthSensorStore {
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public:
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void setup(InternalGPIOPin *pin) {
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pin->setup();
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this->pin_ = pin->to_isr();
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this->last_rise_ = micros();
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pin->attach_interrupt(&PulseWidthSensorStore::gpio_intr, this, gpio::INTERRUPT_ANY_EDGE);
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}
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static void gpio_intr(PulseWidthSensorStore *arg);
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uint32_t get_pulse_width_us() const { return this->last_width_; }
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float get_pulse_width_s() const { return this->last_width_ / 1e6f; }
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uint32_t get_last_rise() const { return last_rise_; }
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protected:
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ISRInternalGPIOPin pin_;
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volatile uint32_t last_width_{0};
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volatile uint32_t last_rise_{0};
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};
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class PulseWidthSensor : public sensor::Sensor, public PollingComponent {
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public:
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void set_pin(InternalGPIOPin *pin) { pin_ = pin; }
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void setup() override { this->store_.setup(this->pin_); }
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void dump_config() override;
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void update() override;
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protected:
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PulseWidthSensorStore store_;
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InternalGPIOPin *pin_;
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};
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} // namespace pulse_width
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} // namespace esphome
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