DVK-BTM521 Laird Technologies, DVK-BTM521 Datasheet - Page 91

• Manufacturer Part Number: DVK-BTM521
• Description: BT MM DEV KIT
• Manufacturer: Laird Technologies
• Type: Transceiver, Bluetoothr

Specifications of DVK-BTM521

• Frequency: 2.4GHz
• Interface Type: RS-232
• Processor Series: BTM521
• Silicon Manufacturer: Laird Technologies
• Kit Application Type: Communication & Networking
• Application Sub Type: Bluetooth
• Kit Contents: Development Board & Software Tools
• Features: Supports CSR
• Rohs Compliant: Yes
• For Use With/related Products: BTM521
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: DVK-BTM521

BTM520/521
Bluetooth
AT COMMAND SET
REFERENCE
91 www.lairdtech.com
®
Multimedia Plus Module
Task
Disconnect HS
Disconnect HFG
Disconnect HF
Disconnect all profiles
listed in this table
Command
“AT+SPH”;”ATH1101”
“AT+APH”;”ATH110D”
“AT+AVH”;”ATH110E”
“AT+HSH”;”ATH1108”
“AT+HSGH”;”ATH1112”
5. Legacy Response Format (BISM2)
Some BISM2 responses have been slightly changed on BTM modules in order to provide enhanced
functionality. If required, a BISM2 compatible response format can be enabled by S Register 329.
Table 3.50 shows the implications of enabled/disabled legacy response format.
Task
Enable legacy response format
(BISM2 compatible)
AT-Command
ATH1108 or AT+HSH
ATH111F or AT+HFGH
ATH111E or AT+HFH
ATH*
Table 3.49: Enabling/Disabling legacy response format
Legacy response format enabled
(S329=1)
Response = “NO CARRIER”
Response = “NO CARRIER”
Response = “NO CARRIER”
Response = “NO CARRIER”
Response = “NO CARRIER”
Table 3.48: Profile release commands
S-Register
S329 [0..1]
Comment
Must be enabled by S332 because it would result in
a behavior not defined in HSP specification.
If HS(HSP) connection released: response = “NO
CARRIER 1108”; If no HSP connection has existed:
response = “NO CARRIER”
If AG(HFP) connection released: response = “NO
CARRIER 111F”; If no HSP connection has existed:
response = “NO CARRIER”
If HF(HFP) connection released: response = “NO
CARRIER 111E”; If no HSP connection has existed:
response = “NO CARRIER”
Response:
“NO CARRIER <ProfileUUID>” for each previously
connected profile or
“NO CARRIER” if no existing connection found or
HS connected but S332=0
Comment
0 = disabled (default)
1 = enabled
Legacy response format disabled (S329=0)
If SPP was connected, response =
“NO CARRIER 1101”
If SPP was not connected, response =
“NO CARRIER”
If A2DP was connected, response =
“NO CARRIER 110D”
If A2DP was not connected, response =
“NO CARRIER”
If AVRCP was connected, response =
“NO CARRIER 110E”
If AVRCP was not connected, response =
“NO CARRIER”
If HS instance was connected, response =
“NO CARRIER 110E”
If HS instance was not connected, response
= “NO CARRIER”
If HSG instance was connected, response =
“NO CARRIER 1112”
If HSG instance was not connected, re-
sponse = “NO CARRIER”
Laird Technologies