i2c_bus_arduino.h

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#pragma once
 
#if defined(USE_ARDUINO) && !defined(USE_ESP32) && !defined(USE_LIBRETINY)
 
#include <Wire.h>
#include "esphome/core/component.h"
#include "i2c_bus.h"
 
namespace esphome::i2c {
 
enum RecoveryCode {
  RECOVERY_FAILED_SCL_LOW,
  RECOVERY_FAILED_SDA_LOW,
  RECOVERY_COMPLETED,
};
 
class ArduinoI2CBus final : public InternalI2CBus, public Component {
 public:
  void setup() override;
  void dump_config() override;
  ErrorCode write_readv(uint8_t address, const uint8_t *write_buffer, size_t write_count, uint8_t *read_buffer,
                        size_t read_count) override;
  float get_setup_priority() const override { return setup_priority::BUS; }
 
  void set_scan(bool scan) { this->scan_ = scan; }
  void set_sda_pin(uint8_t sda_pin) { this->sda_pin_ = sda_pin; }
  void set_scl_pin(uint8_t scl_pin) { this->scl_pin_ = scl_pin; }
  void set_timeout(uint32_t timeout) { this->timeout_ = timeout; }
 
  int get_port() const override { return 0; }
  void set_frequency(uint32_t frequency) { this->frequency_ = frequency; }
#ifdef I2C_PORT_FREQUENCY_COUNT
  ErrorCode switch_frequency(uint32_t frequency) override;
  uint32_t get_frequency() const override { return this->frequency_; }
#endif
 
 private:
  void recover_();
  void set_pins_and_clock_();
  RecoveryCode recovery_result_;
 
 protected:
  TwoWire *wire_;
  uint8_t sda_pin_;
  uint8_t scl_pin_;
  uint32_t frequency_;
  uint32_t timeout_ = 0;
  bool initialized_ = false;
};
 
}  // namespace esphome::i2c
 
#endif  // defined(USE_ARDUINO) && !defined(USE_ESP32)