midea_protocol.h

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#pragma once
 
#include <array>
#include <vector>
 
#include "esphome/core/component.h"
#include "esphome/core/hal.h"
#include "esphome/core/helpers.h"
#include "remote_base.h"
 
namespace esphome::remote_base {
 
class MideaData {
 public:
  // Make default
  MideaData() {}
  // Make from initializer_list
  MideaData(std::initializer_list<uint8_t> data) {
    std::copy_n(data.begin(), std::min(data.size(), this->data_.size()), this->data_.begin());
  }
  // Make from vector
  MideaData(const std::vector<uint8_t> &data) {
    std::copy_n(data.begin(), std::min(data.size(), this->data_.size()), this->data_.begin());
  }
  MideaData(const uint8_t *data, size_t len) {
    progmem_memcpy(this->data_.data(), data, std::min(len, this->data_.size()));
  }
 
  uint8_t *data() { return this->data_.data(); }
  const uint8_t *data() const { return this->data_.data(); }
  uint8_t size() const { return this->data_.size(); }
  bool is_valid() const { return this->data_[OFFSET_CS] == this->calc_cs_(); }
  void finalize() { this->data_[OFFSET_CS] = this->calc_cs_(); }
  bool is_compliment(const MideaData &rhs) const;
  static constexpr size_t TO_STR_BUFFER_SIZE = format_hex_pretty_size(6);
  const char *to_str(char *buffer) const {
    format_hex_pretty_to(buffer, TO_STR_BUFFER_SIZE, this->data_.data(), this->data_.size(), '.');
    return buffer;
  }
  // compare only 40-bits
  bool operator==(const MideaData &rhs) const {
    return std::equal(this->data_.begin(), this->data_.begin() + OFFSET_CS, rhs.data_.begin());
  }
  enum MideaDataType : uint8_t {
    MIDEA_TYPE_CONTROL = 0xA1,
    MIDEA_TYPE_SPECIAL = 0xA2,
    MIDEA_TYPE_FOLLOW_ME = 0xA4,
  };
  MideaDataType type() const { return static_cast<MideaDataType>(this->data_[0]); }
  template<typename T> T to() const { return T(*this); }
  uint8_t &operator[](size_t idx) { return this->data_[idx]; }
  const uint8_t &operator[](size_t idx) const { return this->data_[idx]; }
 
 protected:
  uint8_t get_value_(uint8_t idx, uint8_t mask = 255, uint8_t shift = 0) const {
    return (this->data_[idx] >> shift) & mask;
  }
  void set_value_(uint8_t idx, uint8_t value, uint8_t mask = 255, uint8_t shift = 0) {
    this->data_[idx] &= ~(mask << shift);
    this->data_[idx] |= (value << shift);
  }
  void set_mask_(uint8_t idx, bool state, uint8_t mask = 255) { this->set_value_(idx, state ? mask : 0, mask); }
  static constexpr uint8_t OFFSET_CS = 5;
  // 48-bits data
  std::array<uint8_t, 6> data_;
  // Calculate checksum
  uint8_t calc_cs_() const;
};
 
class MideaProtocol : public RemoteProtocol<MideaData> {
 public:
  void encode(RemoteTransmitData *dst, const MideaData &src);
  optional<MideaData> decode(RemoteReceiveData src);
  void dump(const MideaData &data);
};
 
DECLARE_REMOTE_PROTOCOL(Midea)
 
}  // namespace esphome::remote_base