M26-BT3.0 AT命令及使用流程

GSM BT

Application Note

GSM/GPRS Module Series

Rev. GSM_BT_Application_Note_V1.2

Date: 2015-06-25

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About the Document ................................................................................................................................... 2

Contents ....................................................................................................................................................... 3

Table Index ................................................................................................................................................... 6

1 Introduction .......................................................................................................................................... 7

1.1. General Introduction ................................................................................................................ 7

1.2. BT Profiles ............................................................................................................................... 7

1.3. BT Address .............................................................................................................................. 7

1.4. AT Interface for BT Function ................................................................................................... 8

1.5. Independence of BT ................................................................................................................ 8

2 BT Operation ........................................................................................................................................ 9

2.3.1. Change BT Name ........................................................................................................ 11

2.3.2. Set BT Visibility............................................................................................................ 11

2.3.3. Read Address .............................................................................................................. 11

2.4. Scan BT Devices ................................................................................................................... 11

2.4.1. Scan until Timeout ....................................................................................................... 12

2.4.2. Cancel Scan ................................................................................................................ 12

2.5. Pair/Unpair BT Device ........................................................................................................... 12

2.5.1. Originated Pair SSP (Numeric Compare Mode) ......................................................... 13

2.5.2. Originated Pair PINCODE ........................................................................................... 13

2.5.3. Terminated Pair SSP (Numeric Compare Mode) ........................................................ 13

2.7.1.2. Initiate Connection (AT Command Mode) ....................................................... 15

2.7.1.3. Initiate Connection (Transparent Access Mode) ............................................. 15

2.7.1.4. Accept Connection (Buffer Access Mode) ....................................................... 15

2.7.1.5. Accept Connection (AT Command Mode) ....................................................... 16

2.7.1.6. Accept Connection (Transparent Access Mode) ............................................. 16

2.7.1.7. Initiate Disconnection (Buffer Access Mode and AT Command Mode) .......... 16

2.7.1.8. Initiate Disconnection (Transparent Access Mode) ......................................... 16

2.7.1.9. Disconnect Indication (Buffer Access Mode and AT Command Mode) .......... 17

2.7.1.10. Disconnect Indication (Transparent Access Mode) ......................................... 17

2.7.2. HFP Connect /Disconnect ........................................................................................... 17

2.7.2.1. Initiate Connection with HF Device ................................................................. 17

2.7.2.6. Disconnect Indication with AG device ............................................................. 18

2.7.3. Use BT Device Address to Connect SPP Directly ...................................................... 18

2.10.2. Send Data .................................................................................................................... 21

2.11. SPP Transparent Access Mode ............................................................................................ 21

2.12. HFP Connection .................................................................................................................... 23

2.12.1. Module Acts as AG Device .......................................................................................... 23

2.12.2. Module Acts as HF Device .......................................................................................... 24

3 BT Commands Description ............................................................................................................... 25

3.1. AT Command Syntax ............................................................................................................ 25

3.2. Description of AT Command ................................................................................................. 25

3.2.1. AT+QBTPWR Power On/Off BT ............................................................................... 25

3.2.2. AT+QBTNAME Read/Write BT Device Local Name ................................................ 26

3.2.3. AT+QBTADDR Read BT Device Local Address ....................................................... 27

3.2.4. AT+QBTVISB Set BT Visibility .................................................................................. 27

3.2.12. AT+QBTGPROF Get the Supported Profile ............................................................. 33

3.2.13. AT+QBTCONN Connect BT Device ......................................................................... 34

3.2.14. AT+QBTCONND Use BT Device Address to Connect SPP Directly ....................... 35

3.2.15. +QBTIND: "conn" Connecting Indication .................................................................. 37

3.2.16. AT+QBTACPT Accept Connection ........................................................................... 37

3.2.17. AT+QBTDISCONN Disconnect ................................................................................ 38

3.2.18. +QBTIND: "disc" Disconnect Indication ................................................................... 39

3.2.19. AT+QSPPSEND Send Data ..................................................................................... 39