Datasheet

Codebase Revision: 0.3.0

Parameters: This command accepts a set of comma-separated key-value pairs that are used

to define the characteristic properties. The following key-value pais can be used:

UUID: The 16-bit UUID to use for the characteristic (which will be insert in the 3rd and

4th bytes of the parent services 128-bit UUID). This value should be entered in

hexadecimal format (ex. 'UUID=0x1234'). This value must be unique, and should not

conflict with bytes 3+4 of the parent service's 128-bit UUID.

PROPERTIES: The 8-bit characteristic properties field, as defined by the Bluetooth SIG.

The following values can be used:

0x02 - Read

0x04 - Write Without Response

0x08 - Write

0x10 - Notify

0x20 - Indicate

MIN_LEN: The minimum size of the values for this characteristic (in bytes, min = 1, max =

20, default = 1)

MAX_LEN: The maximum size of the values for the characteristic (in bytes, min = 1, max

= 20, default = 1)

VALUE: The initial value to assign to this characteristic (within the limits of 'MIN_LEN'

and 'MAX_LEN'). Value can be an integer ("-100", "27"), a hexadecimal value

("0xABCD"), a byte array ("aa-bb-cc-dd") or a string ("GATT!").

>=0.7.0 - DATATYPE: This argument indicates the data type stored in the

characteristic, and is used to help parse data properly. It can be one of the following

values:

AUTO (0, default)

STRING (1)

BYTEARRAY (2)

INTEGER (3)

>=0.7.0 - DESCRIPTION: Adds the specified string as the characteristic description

entry

>=0.7.0 - PRESENTATION: Adds the specified value as the characteristic presentation

format entry

description.