User's Guide

www.lm-technologies.com

LM074 SPP with GAP Central Application v1.1

3.6 BLE Services/characteristic scan commands:

3.6.1 “AT*FINDSERV”\r\n

i. Execution only command

ii. Command is used to scan services supported on connected BLE

device.

iii. User needs to state connection ID for the device whose services

are to be scanned. E. g. “at*findserv=1” finds services on 1st

connected device.

iv. Module provides a detailed report for the services supported by

the remote device.

v. If the BLE device has any service with 128-bit UUID then it is

indicated with all bytes.

vi. IN below report the row mentions “ 1 : 1800 : 0001 : 0005 ”

where “1” is serial number, “1800” is 16bit UUID for service,

“0001” is start handle of the service and “0005” is end handle of

the service.

vii. Report is marked for start and end.

viii. For e.g refer below report.

at*findserv=1at*findserv=1

REP*:SERVICE START: =3333-33-333333

= 1 : 1800 : 0001 : 0005

= 2 : 180a : 0006 : 0016

= 3 : 00005500d10211e19b2300025b00a5a5 : 0017 : 001a

= 4 : 180f : 001b : ffff

REP*:SERVICE END: =3333-33-333333

3.6.2 “AT*FINDCHAR”\r\n

i. Execution only command

ii. Command used to scan characteristics supported by services on

the BLE device.

iii. User needs to mention connection ID for the device whose

services are to be scanned. And start and end handle of the

services for which scan is to be performed.

iv. User can scan characteristics for only one service or multiple