Class: RuuviDecoder::V3Data

Inherits:
BaseData show all
Defined in:
lib/ruuvi_decoder/v3_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 = 
14
VERSION_TAG = 
0x03

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 



11
12
13
 
# File 'lib/ruuvi_decoder/v3_data.rb', line 11

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

Instance Method Details

#acceleration_x_g ⇒ Object 



40
41
42
43
44
 
# File 'lib/ruuvi_decoder/v3_data.rb', line 40

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

  @acceleration_x_g = decode_16_bits_signed(raw_data[6..7], multiplier: 0.001)
end

#acceleration_y_g ⇒ Object 



46
47
48
49
50
 
# File 'lib/ruuvi_decoder/v3_data.rb', line 46

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

  @acceleration_y_g = decode_16_bits_signed(raw_data[8..9], multiplier: 0.001)
end

#acceleration_z_g ⇒ Object 



52
53
54
55
56
 
# File 'lib/ruuvi_decoder/v3_data.rb', line 52

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

  @acceleration_z_g = decode_16_bits_signed(raw_data[10..11], multiplier: 0.001)
end

#battery_v ⇒ Object 



58
59
60
61
62
 
# File 'lib/ruuvi_decoder/v3_data.rb', line 58

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

  @battery_v = decode_16_bits_unsigned(raw_data[12..13], multiplier: 0.001)
end

#humidity_pct ⇒ Object 



15
16
17
18
19
 
# File 'lib/ruuvi_decoder/v3_data.rb', line 15

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

  @humidity_pct = raw_data[1] * 0.5
end

#inspect ⇒ Object 



64
65
66
67
68
69
70
71
72
73
74
75
76
 
# File 'lib/ruuvi_decoder/v3_data.rb', line 64

def inspect
  <<~INSPECT.chomp
    <#{self.class.name}
       temperature: #{temperature_c} C,
       humidity: #{humidity_pct} %,
       pressure: #{pressure_hpa} hPa,
       acceleration_x: #{acceleration_x_g} G,
       acceleration_y: #{acceleration_y_g} G,
       acceleration_z: #{acceleration_z_g} G,
       battery: #{battery_v} V,
    >
  INSPECT
end

#pressure_hpa ⇒ Object 



34
35
36
37
38
 
# File 'lib/ruuvi_decoder/v3_data.rb', line 34

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

  @pressure_hpa = decode_16_bits_unsigned(raw_data[4..5], offset: 50_000, multiplier: 0.01)
end

#temperature_c ⇒ Object 



21
22
23
24
25
26
27
28
29
30
31
32
 
# File 'lib/ruuvi_decoder/v3_data.rb', line 21

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

  sign = raw_data[2].nobits?(0x80) ? 1 : -1
  decimal = raw_data[2] & 0x7F
  return @temperature_c = nil if decimal > 127

  fraction = raw_data[3] * 0.01
  return @temperature_c = nil if raw_data[3] > 99

  @temperature_c = sign * (decimal + fraction)
end