Difference between revisions of "BT Shield (Master Slave)"

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(→‎10. Set/Check GIAC (General Inquire Access Code))
(→‎Overview)
 
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it can directly plug on Arduino/IFlat-32 board, use UART port for  
 
it can directly plug on Arduino/IFlat-32 board, use UART port for  
 
communication with Arduino/IFlat-32 or PC.
 
communication with Arduino/IFlat-32 or PC.
 +
 +
Go shopping [http://imall.iteadstudio.com/im120417010.html BT Shield (Master Slave) (IM120417010)]
  
 
==Specifications==
 
==Specifications==
Line 251: Line 253:
  
 
===11. Set/Check -- Query access patterns===
 
===11. Set/Check -- Query access patterns===
 +
{| class="wikitable"
 +
|-
 +
| align="center" style="background:#f0f0f0;"|'''Command'''
 +
| align="center" style="background:#f0f0f0;"|'''Respond'''
 +
| align="center" style="background:#f0f0f0;"|'''Parameter'''
 +
|-
 +
| AT+INQM=<Param>,<Param2>, <Param3> ||1.OK 2. FAIL||Param: 0——inquiry_mode_standard  1——inquiry_mode_rssi Param2: Maximum number of Bluetooth devices to respond to  Param3: Timeout (1-48 : 1.28s to 61.44s)
 +
|-
 +
| AT+ INQM? ||+INQM ：<Param>,<Param2>, <Param3> OK ||Param: 0——inquiry_mode_standard  1——inquiry_mode_rssi Param2: Maximum number of Bluetooth devices to respond to  Param3: Timeout (1-48 : 1.28s to 61.44s)
 +
|}
 +
 +
'''Example:'''
 +
 +
AT+INQM=1,9,48\r\n
 +
 +
OK
 +
 +
AT+INQM\r\n
 +
 +
+INQM:1, 9, 48
 +
 +
OK
  
 
===12. Set/Check PIN code:===
 
===12. Set/Check PIN code:===
 +
{| class="wikitable"
 +
|-
 +
| align="center" style="background:#f0f0f0;"|'''Command'''
 +
| align="center" style="background:#f0f0f0;"|'''Respond'''
 +
| align="center" style="background:#f0f0f0;"|'''Parameter'''
 +
|-
 +
| AT+PSWD=<Param>||OK||Param: PIN code (Default 1234)
 +
|-
 +
| AT+ PSWD?||+ PSWD ：<Param> OK ||Param: PIN code (Default 1234)
 +
|}
  
 
===13. Set/Check serial parameter:===
 
===13. Set/Check serial parameter:===
 +
{| class="wikitable"
 +
|-
 +
| align="center" style="background:#f0f0f0;"|'''Command'''
 +
| align="center" style="background:#f0f0f0;"|'''Respond'''
 +
| align="center" style="background:#f0f0f0;"|'''Parameter'''
 +
|-
 +
| AT+UART=<Param>,<Param2>,<Param3>||OK||Param1: Baud Param2: Stop bit Param3: Parity
 +
|-
 +
| AT+UART?||+UART=<Param>,<Param2>, <Param3> OK ||Param1: Baud Param2: Stop bit Param3: Parity
 +
|}
 +
 +
'''Example:'''
 +
 +
AT+UART=115200，1,2,\r\n
 +
 +
OK
 +
 +
AT+UART?
 +
 +
+UART:115200,1,2
 +
 +
OK
  
 
===14. Set/Check connect mode:===
 
===14. Set/Check connect mode:===
 +
{| class="wikitable"
 +
|-
 +
| align="center" style="background:#f0f0f0;"|'''Command'''
 +
| align="center" style="background:#f0f0f0;"|'''Respond'''
 +
| align="center" style="background:#f0f0f0;"|'''Parameter'''
 +
|-
 +
| AT+CMODE=<Param> ||OK||Param: 0 - connect fixed address 1 - connect any
 +
address 2 - slave-Loop
 +
|-
 +
| AT+ CMODE? ||+ CMODE:<Param> OK||Param: 0 - connect fixed address 1 - connect any address 2 - slave-Loop
 +
|}
  
 
===15. Set/Check fixed address:===
 
===15. Set/Check fixed address:===
 +
{| class="wikitable"
 +
|-
 +
| align="center" style="background:#f0f0f0;"|'''Command'''
 +
| align="center" style="background:#f0f0f0;"|'''Respond'''
 +
| align="center" style="background:#f0f0f0;"|'''Parameter'''
 +
|-
 +
| AT+BIND=<Param>||OK||Param: Fixed address (Default 00:00:00:00:00:00)
 +
|-
 +
| AT+ BIND?||+ BIND:<Param> OK||Param: Fixed address (Default 00:00:00:00:00:00)
 +
|}
 +
 +
'''Example:'''
 +
 +
AT+BIND=1234，56，abcdef\r\n
 +
 +
OK
 +
 +
AT+BIND?\r\n
 +
 +
+BIND:1234:56:abcdef
 +
 +
OK
  
 
===16. Set/Check LED I/O===
 
===16. Set/Check LED I/O===
 +
{| class="wikitable"
 +
|-
 +
| align="center" style="background:#f0f0f0;"|'''Command'''
 +
| align="center" style="background:#f0f0f0;"|'''Respond'''
 +
| align="center" style="background:#f0f0f0;"|'''Parameter'''
 +
|-
 +
| AT+POLAR=<Param1,<Param2>||OK||Param1: 0- PIO8 low drive LED 1- PIO8 high drive
 +
LED Param2: 0- PIO9 low drive LED 1- PIO9 high drive LED
 +
|-
 +
| AT+ POLAR? ||+ POLAR=<Param1>,<Param2> OK ||Param1: 0- PIO8 low drive LED 1- PIO8 high drive LED Param2: 0- PIO9 low drive LED 1- PIO9 high drive LED
 +
|}
  
 
===17. Set PIO output===
 
===17. Set PIO output===
 +
{| class="wikitable"
 +
|-
 +
| align="center" style="background:#f0f0f0;"|'''Command'''
 +
| align="center" style="background:#f0f0f0;"|'''Respond'''
 +
| align="center" style="background:#f0f0f0;"|'''Parameter'''
 +
|-
 +
| AT+PIO=<Param1>,<Param2>||OK||Param1: PIO number Param2: PIO level 0- low 1- high
 +
|}
 +
 +
'''Example:'''
 +
 +
1. PIO10 output high level
 +
 +
AT+PI0=10，1\r\n
 +
 +
OK
  
 
===18. Set/Check – scan parameter===
 
===18. Set/Check – scan parameter===
 +
{| class="wikitable"
 +
|-
 +
| align="center" style="background:#f0f0f0;"|'''Command'''
 +
| align="center" style="background:#f0f0f0;"|'''Respond'''
 +
| align="center" style="background:#f0f0f0;"|'''Parameter'''
 +
|-
 +
| AT+IPSCAN=<Param1>,<Param2>,<Param3>,<Param4>||OK||Param1: Query time interval
 +
Param2 ： Query duration Param3 ： Paging interval Param4 ： Call duration
 +
|-
 +
| AT+IPSCAN? ||+IPSCAN:<Param1>,<Param2>,<Param3>,<Param4> OK ||Param1: Query time interval Param2 ： Query duration Param3 ： Paging interval Param4 ： Call duration
 +
|}
 +
 +
'''Example:'''
 +
 +
AT+IPSCAN =1234,500,1200,250\r\n
 +
 +
OK
 +
 +
AT+IPSCAN?
 +
 +
+IPSCAN:1234,500,1200,250
  
 
===19. Set/Check – SHIFF parameter===
 
===19. Set/Check – SHIFF parameter===
 +
{| class="wikitable"
 +
|-
 +
| align="center" style="background:#f0f0f0;"|'''Command'''
 +
| align="center" style="background:#f0f0f0;"|'''Respond'''
 +
| align="center" style="background:#f0f0f0;"|'''Parameter'''
 +
|-
 +
| AT+SNIFF=<Param1>,<Param2>,<Param3>,<Param4>||OK||Param1: Max time Param2: Min time Param3: Retry time Param4: Time out
 +
|-
 +
| AT+ SNIFF?||+SNIFF:<Param1>,<Param2>,<Param3>,<Param4> OK||Param1: Max time Param2: Min time Param3: Retry time Param4: Time out
 +
|}
  
 
===20. Set/Check security mode===
 
===20. Set/Check security mode===
 +
{| class="wikitable"
 +
|-
 +
| align="center" style="background:#f0f0f0;"|'''Command'''
 +
| align="center" style="background:#f0f0f0;"|'''Respond'''
 +
| align="center" style="background:#f0f0f0;"|'''Parameter'''
 +
|-
 +
| AT+SENM=<Param1>,<Param2>||1. OK 2. FAIL ||Param1:
 +
 +
0——sec_mode0+off
 +
 +
1——sec_mode1+
 +
non_secure
 +
 +
2——sec_mode2_
 +
service
 +
 +
3——sec_mode3_l
 +
ink
 +
 +
4——sec_mode_u
 +
nknown
 +
 +
Param2:
 +
 +
0——hci_enc_mod
 +
e_off
 +
 +
1——hci_enc_mod
 +
e_pt_to_pt
 +
 +
2——hci_enc_mod
 +
e_pt_to_pt_and_b
 +
cast
 +
|-
 +
| AT+ SENM?||+ SENM:<Param1>,<Param2> OK  ||Param1:
 +
 +
0——sec_mode0+off
 +
 +
1——sec_mode1+
 +
non_secure
 +
 +
2——sec_mode2_
 +
service
 +
 +
3——sec_mode3_l
 +
ink
 +
 +
4——sec_mode_u
 +
nknown
 +
 +
Param2:
 +
 +
0——hci_enc_mod
 +
e_off
 +
 +
1——hci_enc_mod
 +
e_pt_to_pt
 +
 +
2——hci_enc_mod
 +
e_pt_to_pt_and_b
 +
cast
 +
|}
  
 
===21. Delete Authenticated Device===
 
===21. Delete Authenticated Device===
 +
{| class="wikitable"
 +
|-
 +
| align="center" style="background:#f0f0f0;"|'''Command'''
 +
| align="center" style="background:#f0f0f0;"|'''Respond'''
 +
| align="center" style="background:#f0f0f0;"|'''Parameter'''
 +
|-
 +
| AT+PMSAD=<Param>||OK||Param: Authenticated Device Address
 +
|}
 +
 +
'''Example:'''
 +
 +
AT+PMSAD =1234,56,abcdef\r\n
 +
 +
OK
  
 
===22. Delete All Authenticated Device===
 
===22. Delete All Authenticated Device===
 +
{| class="wikitable"
 +
|-
 +
| align="center" style="background:#f0f0f0;"|'''Command'''
 +
| align="center" style="background:#f0f0f0;"|'''Respond'''
 +
| align="center" style="background:#f0f0f0;"|'''Parameter'''
 +
|-
 +
| AT+ RMAAD||OK||-
 +
|}
  
 
===23. Search Authenticated Device===
 
===23. Search Authenticated Device===
 +
{| class="wikitable"
 +
|-
 +
| align="center" style="background:#f0f0f0;"|'''Command'''
 +
| align="center" style="background:#f0f0f0;"|'''Respond'''
 +
| align="center" style="background:#f0f0f0;"|'''Parameter'''
 +
|-
 +
| AT+FSAD=<Param>||1. OK 2. FAIL ||Param: Device address
 +
|}
  
 
===24. Get Authenticated Device Count===
 
===24. Get Authenticated Device Count===
 +
{| class="wikitable"
 +
|-
 +
| align="center" style="background:#f0f0f0;"|'''Command'''
 +
| align="center" style="background:#f0f0f0;"|'''Respond'''
 +
| align="center" style="background:#f0f0f0;"|'''Parameter'''
 +
|-
 +
| AT+ADCN?||+ADCN：<Param> OK||Param: Device Count
 +
|}
  
 
===25. Most Recently Used Authenticated Device===
 
===25. Most Recently Used Authenticated Device===
 +
{| class="wikitable"
 +
|-
 +
| align="center" style="background:#f0f0f0;"|'''Command'''
 +
| align="center" style="background:#f0f0f0;"|'''Respond'''
 +
| align="center" style="background:#f0f0f0;"|'''Parameter'''
 +
|-
 +
| AT+MRAD? ||+ MRAD：<Param> OK ||Param: Recently Authenticated Device Address
 +
|}
  
 
===26. Get the module working state===
 
===26. Get the module working state===
 +
{| class="wikitable"
 +
|-
 +
| align="center" style="background:#f0f0f0;"|'''Command'''
 +
| align="center" style="background:#f0f0f0;"|'''Respond'''
 +
| align="center" style="background:#f0f0f0;"|'''Parameter'''
 +
|-
 +
| AT+ STATE? ||+ STATE：<Param> OK||Param: "INITIALIZED" "READY" "PAIRABLE" "PAIRED" "INQUIRING" "CONNECTING" "CONNECTED""DISCONNECTED" "NUKNOW"
 +
|}
  
 
===27. Initialize the SPP profile lib===
 
===27. Initialize the SPP profile lib===
 +
{| class="wikitable"
 +
|-
 +
| align="center" style="background:#f0f0f0;"|'''Command'''
 +
| align="center" style="background:#f0f0f0;"|'''Respond'''
 +
| align="center" style="background:#f0f0f0;"|'''Parameter'''
 +
|-
 +
| AT+INIT||1. OK 2. FAIL||-
 +
|}
  
 
===28. Inquiry Bluetooth Device===
 
===28. Inquiry Bluetooth Device===
 +
{| class="wikitable"
 +
|-
 +
| align="center" style="background:#f0f0f0;"|'''Command'''
 +
| align="center" style="background:#f0f0f0;"|'''Respond'''
 +
| align="center" style="background:#f0f0f0;"|'''Parameter'''
 +
|-
 +
| AT+INQ ||+INQ: <Param1>, <Param2>, <Param3> …. OK ||Param1：Address  Param2 ： Device Class  Param3 ： RSSI  Signal strength
 +
|}
 +
 +
'''Example:'''
 +
 +
AT+INIT\r\n
 +
 +
OK
 +
 +
AT+IAC=9e8b33\r\n
 +
 +
OK
 +
 +
AT+CLASS=0\r\n
 +
 +
AT+INQM=1,9,48\r\n
 +
 +
At+INQ\r\n
 +
 +
+INQ:2:72:D2224,3E0104,FFBC
 +
 +
+INQ:1234:56:0,1F1F,FFC1
 +
 +
+INQ:1234:56:0,1F1F,FFC0
 +
 +
+INQ:1234:56:0,1F1F,FFC1
 +
 +
+INQ:2:72:D2224,3F0104,FFAD
 +
 +
+INQ:1234:56:0,1F1F,FFBE
 +
 +
+INQ:1234:56:0,1F1F,FFC2
 +
 +
+INQ:1234:56:0,1F1F,FFBE
 +
 +
+INQ:2:72:D2224,3F0104,FFBC
 +
 +
OK
  
 
===29. Cancel Inquiring Bluetooth Device===
 
===29. Cancel Inquiring Bluetooth Device===
 +
{| class="wikitable"
 +
|-
 +
| align="center" style="background:#f0f0f0;"|'''Command'''
 +
| align="center" style="background:#f0f0f0;"|'''Respond'''
 +
| align="center" style="background:#f0f0f0;"|'''Parameter'''
 +
|-
 +
| AT+ INQC||OK||-
 +
|}
  
 
===30. Equipment Matching===
 
===30. Equipment Matching===
 +
{| class="wikitable"
 +
|-
 +
| align="center" style="background:#f0f0f0;"|'''Command'''
 +
| align="center" style="background:#f0f0f0;"|'''Respond'''
 +
| align="center" style="background:#f0f0f0;"|'''Parameter'''
 +
|-
 +
| AT+PAIR=<Param1>,<Param2>||1. OK 2. FAIL||Param1 ：Device Address  Param2：Time out
 +
|}
  
 
===31. Connect Device===
 
===31. Connect Device===
 +
{| class="wikitable"
 +
|-
 +
| align="center" style="background:#f0f0f0;"|'''Command'''
 +
| align="center" style="background:#f0f0f0;"|'''Respond'''
 +
| align="center" style="background:#f0f0f0;"|'''Parameter'''
 +
|-
 +
| AT+LINK=<Param>||1. OK 2. FAIL||Param ： Device Address
 +
|}
 +
 +
'''Example:'''
 +
 +
AT+FSAD=1234,56,abcdef\r\n
 +
 +
OK
 +
 +
AT+LINK=1234,56,abcdef\r\n
 +
 +
OK
  
 
===32. Disconnect===
 
===32. Disconnect===
 +
{| class="wikitable"
 +
|-
 +
| align="center" style="background:#f0f0f0;"|'''Command'''
 +
| align="center" style="background:#f0f0f0;"|'''Respond'''
 +
| align="center" style="background:#f0f0f0;"|'''Parameter'''
 +
|-
 +
| AT+DISC||1. +DISC:SUCCESS OK 2. +DISC:LINK_LOSS OK 3. +DISC:NO_SLC OK 4. +DISC:TIMEOUT OK 5. +DISC:ERROR OK||Param ： Device Address
 +
|}
  
 
===33. Energy-saving mode===
 
===33. Energy-saving mode===
 +
{| class="wikitable"
 +
|-
 +
| align="center" style="background:#f0f0f0;"|'''Command'''
 +
| align="center" style="background:#f0f0f0;"|'''Respond'''
 +
| align="center" style="background:#f0f0f0;"|'''Parameter'''
 +
|-
 +
| AT+ENSNIFF=<Param>||OK||Param ： Device Address
 +
|}
  
 
===34. Exerts Energy-saving mode===
 
===34. Exerts Energy-saving mode===
 +
{| class="wikitable"
 +
|-
 +
| align="center" style="background:#f0f0f0;"|'''Command'''
 +
| align="center" style="background:#f0f0f0;"|'''Respond'''
 +
| align="center" style="background:#f0f0f0;"|'''Parameter'''
 +
|-
 +
| AT+ EXSNIFF =<Param>||OK||Param ： Device Address
 +
|}
  
−
'''Application Example'''  
+
'''Application Example'''
 +
 
This is a demo that HC-05 is a master device and communicates to  
 
This is a demo that HC-05 is a master device and communicates to  
 
hc-06.  
 
hc-06.  
Line 313: Line 687:
  
 
==Download==
 
==Download==
 +
[ftp://imall.iteadstudio.com/IM120417010_BT_Shield_v2.2/DS_IM120417010_BTShield.pdf Datasheet for BT Shield]
 +
 +
[ftp://imall.iteadstudio.com/IM120417010_BT_Shield_v2.2/DS_BluetoothHC05.pdf Datasheet for BluetoothHC05]
 +
 +
[ftp://imall.iteadstudio.com/IM120417010_BT_Shield_v2.2/SCH_IM120417010_BTShield.pdf Schematic for BT Shield]
  
 
==Useful Links==
 
==Useful Links==
 +
[http://home.comcast.net/~tomhorsley/hardware/arduino/datasheet.html by Tom <The Missing BT Shield Datasheet>]
 +
 +
[http://forum.arduino.cc/index.php/topic,90048.msg676100.html#msg676100 by And1G <How to work with AT-Command?>]
 +
 +
[http://blog.iteadstudio.com/upload-program-to-arduino-with-bt-shield/ <Upload Program To Arduino With BT Shield>]

Latest revision as of 06:07, 11 June 2014

Overview

ITEAD BT SHIELD (MASTER SLAVE).jpg

BT shield V2.2 is a serial port Bluetooth module (with master and slave mode) breakout board, it’s compatible with Arduino and IFlat-32, it can directly plug on Arduino/IFlat-32 board, use UART port for communication with Arduino/IFlat-32 or PC.

Go shopping BT Shield (Master Slave) (IM120417010)

Specifications

Microprocessor CSR BC417
PCB size 53.3mm X 47mm X 1.6mm
Indicators PWR,State
Power supply 5V DC
IO 6
Communication Protocol UART/Bluetooth 2.0
RoSH Yes

Electrical Characteristics

Specification Min Type Max Unit
Power Voltage 4.5 5 5.5 VDC
Input Voltage VH (Target Voltage = 3.3V) 3 3.3 3.6 VDC
Input Voltage VH (Target Voltage = 5V) 4.5 5 5.5 V
Input Voltage VL: -0.3 0 0.5 V
Current Consumption - 20 40 mA

Hardware

ITEAD BT SHIELD (MASTER SLAVE)1.jpg

UART Multiplexer (For free UART connection setting)

You can use the jumper to connect the TXD and RXD pins of HC-05 to D0, D1, D4~D7 pin of Arduino.

ITEAD BT SHIELD (MASTER SLAVE)2.jpg

When using the connection as Figure 3, the BT shield connects to the ATMega328 chip on board.

ITEAD BT SHIELD (MASTER SLAVE)3.jpg

When using the connection as Figure 4, the HC-05 connects with the FT232RL chip, and the FT232RL connect to PC by USB. Whit this configuration you can use the serial software on PC to control or configure the HC-05 module.

ITEAD BT SHIELD (MASTER SLAVE)4.jpg

Except the 2 configurations above, you can connect the TXD and RXD to any other pins from D4-D7, and using the software-serial library to control the HC-05 module.

ITEAD BT SHIELD (MASTER SLAVE)5.jpg

Mode Switch

The Mode Set Switch is connected to PIO11, when it is pushed to CMD and powered on, the HC-05 enter command mode, HC-05 module can receive and response AT command in this mode. When it is pushed to DATA and powered on. The HC-05 enters data mode and will not accept AT command.

States LED

When power on and disconnect the port, states LED blinks 1time/2s ; when the module connect and open the serial port, states LED blinks 2times/s.

AT command

1. Test command:

Command Respond Parameter
AT OK -

2. Reset

Command Respond Parameter
AT+RESET OK -

3. Get firmware version

Command Respond Parameter
AT+VERSION? +VERSION:<Param> OK Param : firmware version

Example:

AT+VERSION?\r\n

+VERSION:2.0-20100601

OK

4. Restore default

Command Respond Parameter
AT+ORGL OK -

Default state:

Slave mode, pin code :1234, device name: H-C-2010-06-01 ,Baud 38400bits/s.

5. Get module address

Command Respond Parameter
AT+ADDR? +ADDR:<Param> OK Param: address of Bluetooth module

Bluetooth address: NAP: UAP : LAP

Example:

AT+ADDR?\r\n

+ADDR:1234:56:abcdef

OK

6. Set/Check module name:

Command Respond Parameter
AT+NAME=<Param> OK Param: Bluetooth module name (Default :HC-05)
AT+NAME? +NAME:<Param> OK (/FAIL) Param: Bluetooth module name (Default :HC-05)

Example:

AT+NAME=HC-05\r\n set the module name to HC-05

OK

AT+NAME=ITeadStudio\r\n

OK

AT+NAME?\r\n

+NAME: ITeadStudio

OK

7. Get the Bluetooth device name:

Command Respond Parameter
AT+RNAME?<Param1> 1. +NAME:<Param2> OK 2. FAIL Param1,Param 2 : the address of Bluetooth device

Example: (Device address 00:02:72:od:22:24，name：ITead)

AT+RNAME? 0002，72，od2224\r\n

+RNAME:ITead

OK

8. Set/Check module mode:

Command Respond Parameter
AT+ROLE=<Param> OK Param: 0- Slave 1-Master 2-Slave-Loop
AT+ ROLE? +ROLE:<Param> OK Param: 0- Slave 1-Master 2-Slave-Loop

9. Set/Check device class

Command Respond Parameter
AT+CLASS=<Param> OK Param: Device Class
AT+ CLASS? 1. +CLASS:<Param> OK 2. FAIL Param: Device Class

10. Set/Check GIAC (General Inquire Access Code)

Command Respond Parameter
AT+IAC=<Param> 1.OK 2. FAIL Param: GIAC (Default : 9e8b33)
AT+IAC +IAC:<Param> OK Param: GIAC (Default : 9e8b33)

Example:

AT+IAC=9e8b3f\r\n

OK

AT+IAC?\r\n

+IAC: 9e8b3f

OK

11. Set/Check -- Query access patterns

Command Respond Parameter
AT+INQM=<Param>,<Param2>, <Param3> 1.OK 2. FAIL Param: 0——inquiry_mode_standard 1——inquiry_mode_rssi Param2: Maximum number of Bluetooth devices to respond to Param3: Timeout (1-48 : 1.28s to 61.44s)
AT+ INQM? +INQM ：<Param>,<Param2>, <Param3> OK Param: 0——inquiry_mode_standard 1——inquiry_mode_rssi Param2: Maximum number of Bluetooth devices to respond to Param3: Timeout (1-48 : 1.28s to 61.44s)

Example:

AT+INQM=1,9,48\r\n

OK

AT+INQM\r\n

+INQM:1, 9, 48

OK

12. Set/Check PIN code:

Command Respond Parameter
AT+PSWD=<Param> OK Param: PIN code (Default 1234)
AT+ PSWD? + PSWD ：<Param> OK Param: PIN code (Default 1234)

13. Set/Check serial parameter:

Command Respond Parameter
AT+UART=<Param>,<Param2>,<Param3> OK Param1: Baud Param2: Stop bit Param3: Parity
AT+UART? +UART=<Param>,<Param2>, <Param3> OK Param1: Baud Param2: Stop bit Param3: Parity

Example:

AT+UART=115200，1,2,\r\n

OK

AT+UART?

+UART:115200,1,2

OK

14. Set/Check connect mode:

Command Respond Parameter
AT+CMODE=<Param> OK Param: 0 - connect fixed address 1 - connect any

address 2 - slave-Loop

AT+ CMODE? + CMODE:<Param> OK Param: 0 - connect fixed address 1 - connect any address 2 - slave-Loop

15. Set/Check fixed address:

Command Respond Parameter
AT+BIND=<Param> OK Param: Fixed address (Default 00:00:00:00:00:00)
AT+ BIND? + BIND:<Param> OK Param: Fixed address (Default 00:00:00:00:00:00)

Example:

AT+BIND=1234，56，abcdef\r\n

OK

AT+BIND?\r\n

+BIND:1234:56:abcdef

OK

16. Set/Check LED I/O

Command Respond Parameter
AT+POLAR=<Param1,<Param2> OK Param1: 0- PIO8 low drive LED 1- PIO8 high drive

LED Param2: 0- PIO9 low drive LED 1- PIO9 high drive LED

AT+ POLAR? + POLAR=<Param1>,<Param2> OK Param1: 0- PIO8 low drive LED 1- PIO8 high drive LED Param2: 0- PIO9 low drive LED 1- PIO9 high drive LED

17. Set PIO output

Command Respond Parameter
AT+PIO=<Param1>,<Param2> OK Param1: PIO number Param2: PIO level 0- low 1- high

Example:

1. PIO10 output high level

AT+PI0=10，1\r\n

OK

18. Set/Check – scan parameter

Command Respond Parameter
AT+IPSCAN=<Param1>,<Param2>,<Param3>,<Param4> OK Param1: Query time interval

Param2 ： Query duration Param3 ： Paging interval Param4 ： Call duration

AT+IPSCAN? +IPSCAN:<Param1>,<Param2>,<Param3>,<Param4> OK Param1: Query time interval Param2 ： Query duration Param3 ： Paging interval Param4 ： Call duration

Example:

AT+IPSCAN =1234,500,1200,250\r\n

OK

AT+IPSCAN?

+IPSCAN:1234,500,1200,250

19. Set/Check – SHIFF parameter

Command Respond Parameter
AT+SNIFF=<Param1>,<Param2>,<Param3>,<Param4> OK Param1: Max time Param2: Min time Param3: Retry time Param4: Time out
AT+ SNIFF? +SNIFF:<Param1>,<Param2>,<Param3>,<Param4> OK Param1: Max time Param2: Min time Param3: Retry time Param4: Time out

20. Set/Check security mode

Command Respond Parameter
AT+SENM=<Param1>,<Param2> 1. OK 2. FAIL Param1:

0——sec_mode0+off

1——sec_mode1+ non_secure

2——sec_mode2_ service

3——sec_mode3_l ink

4——sec_mode_u nknown

Param2:

0——hci_enc_mod e_off

1——hci_enc_mod e_pt_to_pt

2——hci_enc_mod e_pt_to_pt_and_b cast

AT+ SENM? + SENM:<Param1>,<Param2> OK Param1:

0——sec_mode0+off

1——sec_mode1+ non_secure

2——sec_mode2_ service

3——sec_mode3_l ink

4——sec_mode_u nknown

Param2:

0——hci_enc_mod e_off

1——hci_enc_mod e_pt_to_pt

2——hci_enc_mod e_pt_to_pt_and_b cast

21. Delete Authenticated Device

Command Respond Parameter
AT+PMSAD=<Param> OK Param: Authenticated Device Address

Example:

AT+PMSAD =1234,56,abcdef\r\n

OK

22. Delete All Authenticated Device

Command Respond Parameter
AT+ RMAAD OK -

23. Search Authenticated Device

Command Respond Parameter
AT+FSAD=<Param> 1. OK 2. FAIL Param: Device address

24. Get Authenticated Device Count

Command Respond Parameter
AT+ADCN? +ADCN：<Param> OK Param: Device Count

25. Most Recently Used Authenticated Device

Command Respond Parameter
AT+MRAD? + MRAD：<Param> OK Param: Recently Authenticated Device Address

26. Get the module working state

Command Respond Parameter
AT+ STATE? + STATE：<Param> OK Param: "INITIALIZED" "READY" "PAIRABLE" "PAIRED" "INQUIRING" "CONNECTING" "CONNECTED""DISCONNECTED" "NUKNOW"

27. Initialize the SPP profile lib

Command Respond Parameter
AT+INIT 1. OK 2. FAIL -

28. Inquiry Bluetooth Device

Command Respond Parameter
AT+INQ +INQ: <Param1>, <Param2>, <Param3> …. OK Param1：Address Param2 ： Device Class Param3 ： RSSI Signal strength

Example:

AT+INIT\r\n

OK

AT+IAC=9e8b33\r\n

OK

AT+CLASS=0\r\n

AT+INQM=1,9,48\r\n

At+INQ\r\n

+INQ:2:72:D2224,3E0104,FFBC

+INQ:1234:56:0,1F1F,FFC1

+INQ:1234:56:0,1F1F,FFC0

+INQ:1234:56:0,1F1F,FFC1

+INQ:2:72:D2224,3F0104,FFAD

+INQ:1234:56:0,1F1F,FFBE

+INQ:1234:56:0,1F1F,FFC2

+INQ:1234:56:0,1F1F,FFBE

+INQ:2:72:D2224,3F0104,FFBC

OK

29. Cancel Inquiring Bluetooth Device

Command Respond Parameter
AT+ INQC OK -

30. Equipment Matching

Command Respond Parameter
AT+PAIR=<Param1>,<Param2> 1. OK 2. FAIL Param1 ：Device Address Param2：Time out

31. Connect Device

Command Respond Parameter
AT+LINK=<Param> 1. OK 2. FAIL Param ： Device Address

Example:

AT+FSAD=1234,56,abcdef\r\n

OK

AT+LINK=1234,56,abcdef\r\n

OK

32. Disconnect

Command Respond Parameter
AT+DISC 1. +DISC:SUCCESS OK 2. +DISC:LINK_LOSS OK 3. +DISC:NO_SLC OK 4. +DISC:TIMEOUT OK 5. +DISC:ERROR OK Param ： Device Address

33. Energy-saving mode

Command Respond Parameter
AT+ENSNIFF=<Param> OK Param ： Device Address

34. Exerts Energy-saving mode

Command Respond Parameter
AT+ EXSNIFF =<Param> OK Param ： Device Address

Application Example

This is a demo that HC-05 is a master device and communicates to hc-06.

Step 1. Push the mode switch to CMD

Step 2. Power on, module enter command state

Step 3. Using baud rate 38400, send the ―AT+ROLE=1\r\n‖ to module, with ―OK\r\n‖ means setting successes.

Step 4. Send ―AT+CMODE=1\r\n‖, set HC-05 connect to any address, with ―OK\r\n‖ means setting successes.

Download

Datasheet for BT Shield

Datasheet for BluetoothHC05

Schematic for BT Shield

Useful Links

by Tom <The Missing BT Shield Datasheet>

by And1G <How to work with AT-Command?>

<Upload Program To Arduino With BT Shield>

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