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S
AT Command Reference
Release r02
www.stollmann.de
Page 26 of 33
The characteristic properties are coded as a hexadecimal bitmask as defined in
Bluetooth Core Spec 4.0 Volume3 Part G Chapter 3.3.1.1 [3]
.
Value
Properties
02
Read
04
Write without response
08
Write
10
Notify
20
Indicate
The values can be combined, for example read & notify result in 12.
The attribute permissions (parameter perm=<
permissions
>) are bit coded in a 16 bit
hexadecimal value.
Bit
Value
Function
0,1
0
1
2
3
Read not permitted
Read permitted
Read with authentication permitted
Read with authentication and MITM protection permitted
2..3
-
Reserved
4,5
0
1
2
3
Write not permitted
Write permitted
Write with authentication permitted
Write with authentication and MITM protection permitted
6..15
-
Reserved
Example: value for read only is 0001.
The complete service/s is/are defined through repeated submissions of the
LEATTRIB
command (see example below).