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Chapter 2 – AT Commands
Multi-Tech Systems, Inc. SocketWireless Bluetooth AT Commands (S000360H) 32
IL Last Inquiry
This command repeats last inquiry.
Format: ATIL
Return Parameters: <BT Address>,<COD>
• An “OK” is returned immediately following this command. “DONE” will
appear after all devices have been found, or an inquiry timeout has
occurred while searching for the number of devices specified.
EXAMPLE MASTER:
TYPE: ATIL<cr>
REPLY: <cr_lf>OK<cr_lf>
<cr_lf>00A0961F2023,00000000<cr_lf>
<cr_lf>DONE<cr_lf>
OR
<cr_lf>ERROR<cr_lf>
Note: ATDI command string previously used is stored in flash memory.
Connect as Master Commands
This command is used to connect one module to another. Doing this will enable data transmission bi-
directionally. When performing this command, the reply is critical so as to understand where the connection
process is. A connection can take several seconds, so when making a connection, if it is not already connected,
an “OK” will be sent back immediately. Don’t mistake this for a connection being complete. A completed
connection will return “CONNECT,00,123456789012” some time after the command was sent – typically <2
seconds. PIO(2) will go high and stay high or the CD LED on the MTS2BTA will turn on and stay on while a
Bluetooth connection is established on Channel connection 00.
Note: If either the slave or the master of the connection issues a disconnect, the module will output
“DISCONNECT.” If a connection is lost unexpectedly, then “LINKLOSS” will be output.
DM Dial as Master
This command creates a connection using the Slave’s address and UUID profile code.
Format: ATDM,<BT Address>,<UUID>
Parameters:
• BT Address: Bluetooth Address, 12 hex characters MAX
• UUID: 4 digit, binary profile code (See Appendix C for more info)
Return Parameters: <BT Address> or <Channel Number><BT Address>
Point-to-Point Example:
TYPE: ATDM,123456789012,1101<cr>
REPLY: <cr_lf>OK<cr_lf>
<cr_lf>CONNECT,123456789012<cr_lf>
OR
<cr_lf>OK<cr_lf>
<cr_lf>PAIRED,123456789012<cr_lf> // if security is enabled
<cr_lf>CONNECT,123456789012<cr_lf>
OR
<cr_lf>NO ANSWER<cr_lf> // if device not present
Multi-Point Example:
TYPE: ATDM,123456789012,1101<cr>
REPLY: <cr_lf>OK<cr_lf>
<cr_lf>CONNECT,00,123456789012<cr_lf>
OR
<cr_lf>OK<cr_lf>
<cr_lf>PAIRED,123456789012<cr_lf> // if security is enabled
<cr_lf>CONNECT,00,123456789012<cr_lf>
OR
<cr_lf>NO ANSWER<cr_lf> // if device not present
- AT Commands 1
- Reference Guide 1
- Table of Contents 3
- Chapter 1 – Introduction 5
- Changing Configuration 6
- Using Multi-Point Mode 8
- Multipoint Examples 9
- Multi-Point Test Scenarios 10
- Repeater Mode 12
- Chapter 2 - AT Commands 13
- URST Reset 14
- FRST Factory Reset 14
- SI Status Information 15
- Security Commands 19
- Set and Read Device Name 20
- RSN Read Service Name 21
- SP Set PIN 22
- OP Overwrite PIN 23
- Configuration Commands 24
- SW22 Write PIO Direction 26
- SW23 Write PIO Level 27
- SW26 Lock User Settings 29
- SW27 Write LED Rate 29
- SW29 Write PIN Lock Mode 30
- SW30 Write Deep Sleep Mode 30
- Inquiry Commands 31
- Connect as Master Commands 32
- DC Dial Channel 33
- DL Dial Last 34
- LAST Read Last Address 34
- MACLR Master Address Clear 35
- Connect As Slave Command 36
- Disconnect Commands 36
- About Command/Data Mode 37
- Data Mode Commands 37
- Utilities – Cancel Command 38
- Pairing Commands 39
- Low Power Modes Using Sniff 40
- SNIFF Enable Sniff 40
- SSNIFF Enable Auto Sniff 41
- CSNIFF Clear Sniff 41
- XSNIFF Exit Sniff Mode 41
- PARK Enable Park 42
- XPARK Exit Park 42
- Golden Receive Power Range 42
- RSSI Get RSSI Value 42
- LQ Get Link Quality 43
- Max Power Command 44
- Variable Storage Commands 45
- PIO Logic Commands 46
- Commands 47
- FTP Client 48
- DHFTP Dial Hang Up FTP 49
- FTPB FTP Browse 49
- FTP Push/Pull Commands 51
- FTP Server 52
- DOPP Dial OPP 53
- DHOPP Dial Hang Up OPP 53
- OPP Push/Pull Commands 54
- Chapter 4 – Examples 59
- From Power Up 60
- Headset Point-to-Point 60
- Headset Multipoint 60
- Example Client Applications 61
- Description Requires 69
- Appendix B – Responses 72
- Appendix C -- UUID Table 79
- Consumption 80
- Command Responses Comparison 81
- Abbreviations 85
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