Class: RuuviDecoder::C5Data

Inherits:
BaseData show all
Defined in:
lib/ruuvi_decoder/c5_data.rb

Overview

Decoder for V5 formatted data. docs.ruuvi.com/communication/bluetooth-advertisements/data-format-5-rawv2

Constant Summary collapse

MANUFACTURER_ID = 
0x0499
DATA_LENGTH_BYTES = 
18
VERSION_TAG = 
0xC5

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from BaseData

#initialize

Constructor Details

This class inherits a constructor from RuuviDecoder::BaseData

Class Method Details

.detect(raw_data) ⇒ Object 



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# File 'lib/ruuvi_decoder/c5_data.rb', line 11

def self.detect(raw_data)
  raw_data.size == DATA_LENGTH_BYTES && raw_data[0] == VERSION_TAG
end

Instance Method Details

#battery_v ⇒ Object 



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# File 'lib/ruuvi_decoder/c5_data.rb', line 47

def battery_v
  return @battery_v if defined?(@battery_v)

  @battery_v = decode_bitmasked_unsigned(raw_power_info >> 5, 0x07FF, offset: 1600, multiplier: 0.001,
                                                                      invalid: 2047)
end

#humidity_pct ⇒ Object 



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# File 'lib/ruuvi_decoder/c5_data.rb', line 60

def humidity_pct
  return @humidity_pct if defined?(@humidity_pct)

  @humidity_pct = decode_16_bits_unsigned(raw_data[3..4], multiplier: 0.0025, invalid: 65_535)
end

#inspect ⇒ Object 



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# File 'lib/ruuvi_decoder/c5_data.rb', line 72

def inspect
  "    <\#{self.class.name}\n       temperature: \#{temperature_c} C,\n       humidity: \#{humidity_pct} %,\n       pressure: \#{pressure_hpa} hPa,\n       battery: \#{battery_v} V,\n       tx_power: \#{tx_power_dbm} dBm,\n       movement_counter: \#{movement_counter},\n       sequence_number: \#{sequence_number},\n       mac_address: \#{mac_address}\n    >\n  INSPECT\nend\n".chomp

#mac_address ⇒ Object 



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# File 'lib/ruuvi_decoder/c5_data.rb', line 15

def mac_address
  return @mac_address if defined?(@mac_address)

  @mac_address =
    begin
      bytes = raw_data[12..17]
      if bytes.all?(0xff)
        nil
      else
        bytes.map { |b| format('%02x', b) }.join(':')
      end
    end
end

#movement_counter ⇒ Object 



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# File 'lib/ruuvi_decoder/c5_data.rb', line 35

def movement_counter
  return @movement_counter if defined?(@movement_counter)

  @movement_counter = decode_16_bits_unsigned([0, raw_data[9]], multiplier: 1, invalid: 255)
end

#pressure_hpa ⇒ Object 



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# File 'lib/ruuvi_decoder/c5_data.rb', line 54

def pressure_hpa
  return @pressure_hpa if defined?(@pressure_hpa)

  @pressure_hpa = decode_16_bits_unsigned(raw_data[5..6], offset: 50_000, invalid: 65_535, multiplier: 0.01)
end

#sequence_number ⇒ Object 



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# File 'lib/ruuvi_decoder/c5_data.rb', line 29

def sequence_number
  return @sequence_number if defined?(@sequence_number)

  @sequence_number = decode_16_bits_unsigned(raw_data[10..11], multiplier: 1, invalid: 65_535)
end

#temperature_c ⇒ Object 



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# File 'lib/ruuvi_decoder/c5_data.rb', line 66

def temperature_c
  return @temperature_c if defined?(@temperature_c)

  @temperature_c = decode_16_bits_signed(raw_data[1..2], multiplier: 0.005, invalid: 0x8000)
end

#tx_power_dbm ⇒ Object 



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# File 'lib/ruuvi_decoder/c5_data.rb', line 41

def tx_power_dbm
  return @tx_power_dbm if defined?(@tx_power_dbm)

  @tx_power_dbm = decode_bitmasked_unsigned(raw_power_info, 0x001F, offset: -20, multiplier: 2, invalid: 31)
end