ble_rssi_sensor.h

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#pragma once
 
#include "esphome/core/component.h"
#include "esphome/components/esp32_ble_tracker/esp32_ble_tracker.h"
#include "esphome/components/sensor/sensor.h"
 
#ifdef USE_ESP32
 
namespace esphome::ble_rssi {
 
class BLERSSISensor final : public sensor::Sensor, public esp32_ble_tracker::ESPBTDeviceListener, public Component {
 public:
  void set_address(uint64_t address) {
    this->match_by_ = MATCH_BY_MAC_ADDRESS;
    this->address_ = address;
  }
  void set_irk(uint8_t *irk) {
    this->match_by_ = MATCH_BY_IRK;
    this->irk_ = irk;
  }
  void set_service_uuid16(uint16_t uuid) {
    this->match_by_ = MATCH_BY_SERVICE_UUID;
    this->uuid_ = esp32_ble_tracker::ESPBTUUID::from_uint16(uuid);
  }
  void set_service_uuid32(uint32_t uuid) {
    this->match_by_ = MATCH_BY_SERVICE_UUID;
    this->uuid_ = esp32_ble_tracker::ESPBTUUID::from_uint32(uuid);
  }
  void set_service_uuid128(uint8_t *uuid) {
    this->match_by_ = MATCH_BY_SERVICE_UUID;
    this->uuid_ = esp32_ble_tracker::ESPBTUUID::from_raw(uuid);
  }
  void set_ibeacon_uuid(uint8_t *uuid) {
    this->match_by_ = MATCH_BY_IBEACON_UUID;
    this->ibeacon_uuid_ = esp32_ble_tracker::ESPBTUUID::from_raw(uuid);
  }
  void set_ibeacon_major(uint16_t major) {
    this->check_ibeacon_major_ = true;
    this->ibeacon_major_ = major;
  }
  void set_ibeacon_minor(uint16_t minor) {
    this->check_ibeacon_minor_ = true;
    this->ibeacon_minor_ = minor;
  }
  void on_scan_end() override {
    if (!this->found_)
      this->publish_state(NAN);
    this->found_ = false;
  }
  bool parse_device(const esp32_ble_tracker::ESPBTDevice &device) override {
    switch (this->match_by_) {
      case MATCH_BY_MAC_ADDRESS:
        if (device.address_uint64() == this->address_) {
          this->publish_state(device.get_rssi());
          this->found_ = true;
          return true;
        }
        break;
      case MATCH_BY_IRK:
        if (device.resolve_irk(this->irk_)) {
          this->publish_state(device.get_rssi());
          this->found_ = true;
          return true;
        }
        break;
      case MATCH_BY_SERVICE_UUID:
        for (auto uuid : device.get_service_uuids()) {
          if (this->uuid_ == uuid) {
            this->publish_state(device.get_rssi());
            this->found_ = true;
            return true;
          }
        }
        break;
      case MATCH_BY_IBEACON_UUID:
        auto maybe_ibeacon = device.get_ibeacon();
        if (!maybe_ibeacon.has_value()) {
          return false;
        }
 
        auto ibeacon = *maybe_ibeacon;
 
        if (this->ibeacon_uuid_ != ibeacon.get_uuid()) {
          return false;
        }
 
        if (this->check_ibeacon_major_ && this->ibeacon_major_ != ibeacon.get_major()) {
          return false;
        }
 
        if (this->check_ibeacon_minor_ && this->ibeacon_minor_ != ibeacon.get_minor()) {
          return false;
        }
 
        this->publish_state(device.get_rssi());
        this->found_ = true;
        return true;
    }
    return false;
  }
  void dump_config() override;
 
 protected:
  enum MatchType { MATCH_BY_MAC_ADDRESS, MATCH_BY_IRK, MATCH_BY_SERVICE_UUID, MATCH_BY_IBEACON_UUID };
  MatchType match_by_;
 
  bool found_{false};
 
  uint64_t address_;
  uint8_t *irk_;
 
  esp32_ble_tracker::ESPBTUUID uuid_;
 
  esp32_ble_tracker::ESPBTUUID ibeacon_uuid_;
  uint16_t ibeacon_major_;
  uint16_t ibeacon_minor_;
 
  bool check_ibeacon_major_;
  bool check_ibeacon_minor_;
};
 
}  // namespace esphome::ble_rssi
 
#endif