User's Guide

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LM074 SPP with GAP Central Application v1.1
ii. Dynamic PIN query command: “AT*DPIN=?”\r\n
iii. Dynamic PIN query report: “REP*:DPIN=OFF” (module uses
default DPIN as off)
iv. Dynamic PIN set enable or disable command: “AT*DPIN=ON” or
“AT*DPIN=off”.
v. When module has DPIN setting as OFF, Module uses a fixed PIN
provided default as 1234.
vi. When module has DPIN setting as ON, module expects the
dynamic PIN from customer as per the MITM and IO-Type
settings.
vii. For further on BT2.1 pairing and MITM, DPIN, PASSKEY messages
refer “LM951/LM074 Pairing document”.
4.4.3 “AT*MITM”\r\n
i. Query and set command
ii. (Man IN The Middle) MITM query command: “AT*MITM=?”\r\n
iii. MITM query report: “REP*:MITM=OFF” (module uses default
MITM as off)
iv. MITM set enable or disable command: “AT*MITM=ON” or
“AT*MITM=off”.
4.4.4 “AT*IOTYPE”\r\n
i. Query and set command
ii. (Input Output type for Dynamic PIN) IOTYPE query command:
“AT*IOTYPE=?”\r\n
iii. IOTYPE query report: “REP*:IOTYPE=NO_InOut” (module uses
default IOTYPE as “no input output”)
iv. IOTYPE modify command: “AT*IOTYPE=KB_ONLY” or
“AT*IOTYPE=kB_OnLy”.
v. Following IO-types are supported:
Sr
No
IO type
LM951 /
LM074
String
for
IOTYPE
LM951/LM074
IOTYPE set
command
LM951/LM074
IOTYPE query
response
1
No input
output
NO_InOut
at*iotype=no_inout
REP*:IOTYPE=NO_InOut
2
Key Board
only
KB_Only
at*iotype=Kb_OnLy
REP*:IOTYPE=KB_Only
3
Display only
Disp_Only
at*iotype=DISP_only
REP*:IOTYPE=Disp_Only
4
Display and
confirmation
for Yes / No
Disp_YN
at*iotype=DISP_YN
REP*:IOTYPE=Disp_YN