sfa40.h

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#pragma once
 
#include "esphome/core/component.h"
#include "esphome/components/sensor/sensor.h"
#include "esphome/components/sensirion_common/i2c_sensirion.h"
 
namespace esphome::sfa40 {
 
// SFA40 Datasheet: https://sensirion.com/media/documents/5B06EDD9/69F84BD8/Sensirion_Datasheet_SFA40.pdf
 
class SFA40Component final : public PollingComponent, public sensirion_common::SensirionI2CDevice {
 public:
  void setup() override;
  void dump_config() override;
  void update() override;
 
  void set_formaldehyde_sensor(sensor::Sensor *formaldehyde) { this->formaldehyde_sensor_ = formaldehyde; }
  void set_temperature_sensor(sensor::Sensor *temperature) { this->temperature_sensor_ = temperature; }
  void set_humidity_sensor(sensor::Sensor *humidity) { this->humidity_sensor_ = humidity; }
  void set_wait_for_ready(bool wait_for_ready) { this->wait_for_ready_ = wait_for_ready; }
 
 protected:
  enum ProtocolVersion : uint8_t {
    UNKNOWN = 0,
    PRODUCTION = 1,
    PROTOTYPE = 2,
  };
  enum ErrorCode : uint8_t {
    UNKNOWN_ERROR = 0,
    PROTOCOL_DETECTION_FAILED,
    MEASUREMENT_INIT_FAILED,
  };
  bool detect_protocol_();
  ProtocolVersion protocol_version_{UNKNOWN};
  ErrorCode error_code_{UNKNOWN_ERROR};
  char device_marking_[11]{};
  bool initialized_{false};
  bool wait_for_ready_{true};
  uint64_t serial_number_{0};
 
  sensor::Sensor *formaldehyde_sensor_{nullptr};
  sensor::Sensor *temperature_sensor_{nullptr};
  sensor::Sensor *humidity_sensor_{nullptr};
};
 
}  // namespace esphome::sfa40