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org.bluetooth.characteristic.weight_measurement

Last Modified: 2014-10-17 Approved: Yes

Name: Weight Measurement

Type: org.bluetooth.characteristic.weight_measurementDownload / View

Assigned Number: 0x2A9D

Value Fields

Names Field Requirement Format Minimum Value Maximum Value Additional Information
Flags
Mandatory
8bit N/A N/A
Bit Field
Bit Size Name
Definition
Key Value Requires
0 1 Measurement Units
0 SI (Weight and Mass in units of kilogram (kg) and Height in units of meter) C1
1 Imperial (Weight and Mass in units of pound (lb) and Height in units of inch (in)) C2
1 1 Time stamp present
0 False
1 True C3
2 1 User ID present
0 False
1 True C4
3 1 BMI and Height present
0 False
1 True C5
4 4 Reserved for future use
Weight - SI
Information:
Unit is in kilograms with a resolution of 0.005, and determined when bit 0 of the Flags field is set to 0.
Unit:
org.bluetooth.unit.mass.kilogram
Exponent: Decimal, -3
Multiplier: 5
C1
uint16 N/A N/A None
Weight - Imperial
Information:
Unit is in pounds with a resolution of 0.01, and determined when bit 0 of the Flags field is set to 1.
Unit:
org.bluetooth.unit.mass.pound
Exponent: Decimal, -2
C2
uint16 N/A N/A None
Time Stamp
Information:
Smallest unit in seconds
C3
org.bluetooth.characteristic.date_time N/A N/A None
User ID
Information:
Unit is unitless with a resolution of 1
Unit:
org.bluetooth.unit.unitless
Exponent: Decimal, 0
C4
uint8 N/A N/A
The special value of 0xFF (255 Decimal) for User ID represents “unknown user”.
Key Value
255 unknown user
BMI
Information:
Unit is unitless with a resolution of 0.1
Unit:
org.bluetooth.unit.unitless
Exponent: Decimal, -1
C5
uint16 N/A N/A None
Height - SI
Information:
Unit is in meters with a resolution of 0.001, and determined when bit 0 of the Flags field is set to 0.
Unit:
org.bluetooth.unit.length.meter
Exponent: Decimal, -3
C1
C5
uint16 N/A N/A None
Height - Imperial
Information:
Unit is in inches with a resolution of 0.1, and determined when bit 0 of the Flags field is set to 1
Unit:
org.bluetooth.unit.length.inch
Exponent: Decimal, -1
C2
C5
uint16 N/A N/A None

Note:

The fields in the above table are in the order of LSO to MSO. Where LSO = Least Significant Octet and MSO = Most Significant Octet.