User's Guide

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LM074 SPP with GAP Central Application v1.1

xii. If the LM074 has setting “AT*LESEC=OFF”, LM074 reports BLE

devices even if not present in its Whitelist. If setting is

“AT*LESEC=ON”, LM074 will only report advertising devices which

are in its whitelist.

xiii. In the discovery report, after the BD-address there is an indication

for “advertising Indication type” ranging from 0 to 5 as mentioned

below.

a. ble_adv_event_connectable_undirected = 0 =

Connectable Undirected Advert.

b. ble_adv_event_connectable_directed = 1 =

Connectable Directed Advert.

c. ble_adv_event_discoverable = 2 = Discoverable

advert.

d. ble_adv_event_non_connectable = 3 = Non-

connectable.

e. ble_adv_event_scan_response = 4 = Scan Response.

f. ble_adv_event_unknown = 5 = Unknown event type.

xiv. The LM074 SPP with GAP central application also supports SPP

connection. The module may establish a SPP connection while

performing LE discovery. When the module connects with the SPP

device, it enters in SPP-Data mode and shows data from the

remote device on UART. It treats data sent on local UART as data

to be sent to remote device. To access UART for commands and

responses, the user needs to use the escape sequence and then

continue with other AT commands.

xv. Refer to the screenshots below.

at*lefind=onat*lefind=on

REP*:BLE_SCAN_REP=START

= 1 :1032-00-5b0002 :0

= 2 :1028-00-5b0002 :0

= 3 :3333-33-333333 :0

= 0: 3333-33-333333, LM Serial Server

= 4 :8863-df-be936c :0 :LML8

IND*:CONNECTED=0012-6f-0819c2

+++OK

= 7 :2053-ca-20126e :0

= 8 :2053-ca-20126f :0

at*lefind=offat*lefind=off

xvi. Data during the SPP connection and receive of escape command is

lost in this report (data is lost as UART is given to SPP

connection).