BT740-SA Datasheet, PDF (134/155 Pages) Laird Tech Smart Technology – Enhanced Class 1 Bluetooth v2.1 Module

Enhanced Class 1 Bluetooth v2.1 Module
Firmware User’s Guide
Attribute Tag
MDC_ATTR_METRIC_SPEC_SMALL
MDC_ATTR_UNIT_CODE
MDC_ATTR_ATTRIBUTE_VAL_MAP
MDC_ATTR_TIME_STAMP_ABS
MDC_ATTR_NU_VAL_OBS_BASIC
MDC_ATTR_NU_ACCUR_MSMT
MDC_ATTR_MSMT_STAT
2630
2454
2645
2448
2636
2378
2375
Data Type
METRIC_SPEC_SMALL
OID_TYPE
ATTR_VAL_MAP
ABSOLUTE_TIME
BASIC_NU_OBS_VAL
FLOAT_TYPE
MEASUREMENT_STATUS
Comments
Const
Var:Weight Units
2646,2448
Var:Time
Var:temperature
Always: 1
Var:Meas. Stat.
The attributes commented as ‘variables’ expose to the host for reading and writing via the UART interface
using AT+HAG and AT+HAS commands respectively and are described in detail elsewhere in this document.
The host identifies the variable attributes mentioned above on the UART interface using an attribute ID and
an additional sub ID. The concept of ‘sub ID’ is a Laird artefact and is not part of any IEEE standard, but the
attribute ID is the same as those defined in the IEEE standard in most cases. The complete list for the
Glucometer specialization is as per the table below and should be used with the agent attribute read/write
commands AT+HAG and AT+HAS.
Note:
The attribute values passed back and forth from the host are NOT validated in any way by the
firmware in the Laird module. It is up to the host to ensure that the correct data is written into an
attribute. Any illegal values are picked up at time of Continua Alliance certification testing which
prevents certification.
Table 9-3: Variable Attributes in Glucometer Specialization
Attribute Name
(See IEEE spec for format)
Blood Glucose
Blood Glucose Units
Absolute Time
Power Status
Battery Charge
Time Battery Remain – value
Time Battery Remain – unit
Measurement Status
System ID
System Model – product name
System Model – model name
Serial Number
Attr ID
2636
2454
2448
2389
2460
2440
2440
2375
2436
2344
2344
2349
Sub ID
0
0
0
0
0
0
1
0
0
0
1
0
Size in bytes
2
2
8
2
2
4
2
2
8
12
16
8
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
134
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