View source for Serial Port Bluetooth Module (Master/Slave) : HC-05

==Overview==
[[File:HC-05.jpg|thumb|400px|right]]
HC-05 module is an easy to use Bluetooth SPP (Serial Port Protocol) module, designed for 
transparent wireless serial connection setup. 

Serial port Bluetooth module is fully qualified Bluetooth V2.0+EDR (Enhanced Data Rate) 3Mbps 
Modulation with complete 2.4GHz radio transceiver and baseband. It uses CSR Bluecore 
04-External single chip Bluetooth system with CMOS technology and with AFH(Adaptive 
Frequency Hopping Feature). It has the footprint as small as 12.7mmx27mm. Hope it will simplify 
your overall design/development cycle.

Go shopping [http://imall.iteadstudio.com/im120723009.html Serial Port Bluetooth Module (Master/Slave):HC-05 (IM120723009)]

==Specifications==

===Hardware Features===
* Typical -80dBm sensitivity 
* Up to +4dBm RF transmit power 
* Low Power 1.8V Operation ,1.8 to 3.6V I/O 
* PIO control 
* UART interface with programmable baud rate 
* With integrated antenna 
* With edge connector

===Software Features===
* Default Baud rate: 38400, Data bits:8, Stop bit:1,Parity:No parity, Data control: has. 
Supported baud rate: 9600,19200,38400,57600,115200,230400,460800. 
* Given a rising pulse in PIO0, device will be disconnected. 
* Status instruction port PIO1: low-disconnected, high-connected; 
* PIO10 and PIO11 can be connected to red and blue led separately. When master and slave 
are paired, red and blue led blinks 1time/2s in interval, while disconnected only blue led 
blinks 2times/s. 
* Auto-connect to the last device on power as default. 
* Permit pairing device to connect as default. 
* Auto-pairing PINCODE:”0000” as default 
* Auto-reconnect in 30 min when disconnected as a result of beyond the range of connection.

==Hardware==
[[File:HC-051.jpg]]

{| class="wikitable"
|-
| align="center" style="background:#f0f0f0;"|'''PIN Name'''
| align="center" style="background:#f0f0f0;"|'''PIN #'''
| align="center" style="background:#f0f0f0;"|'''PAD Type'''
| align="center" style="background:#f0f0f0;"|'''Description'''
| align="center" style="background:#f0f0f0;"|'''Note'''
|-
| GND||13,21,22||VSS||Ground Pot||
|-
| 3.3 VCC||12||3.3V||Integrated 3.3V(+) supply with On-chip linear regulator output within 3.15-3.3V||
|-
| AIO0||9||Bi-directional||Programmable input/output line||
|-
| AIO1||10||Bi-directional||Programmable input/output line||
|-
| AIO0||23||Bi-directional RX EN||Programmable input/output line, control output for LNA (if fitted)||
|-
| AIO1||24||Bi-directional TX EN||Programmable input/output line, control output for PA (if fitted)||
|}

{| class="wikitable"
|-
| align="center" style="background:#f0f0f0;"|'''PIN Name'''
| align="center" style="background:#f0f0f0;"|'''PIN #'''
| align="center" style="background:#f0f0f0;"|'''PAD Type'''
| align="center" style="background:#f0f0f0;"|'''Description'''
| align="center" style="background:#f0f0f0;"|'''Note'''
|-
| PIO2||25||Bi-directional||Programmable input/output line||
|-
| PIO3||26||Bi-directional||Programmable input/output line||
|-
| PIO4||27||Bi-directional||Programmable input/output line||
|-
| PIO5||28||Bi-directional||Programmable input/output line||
|-
| PIO6||29||Bi-directional||Programmable input/output line||
|-
| PIO7||30||Bi-directional||Programmable input/output line||
|-
| PIO8||31||Bi-directional||Programmable input/output line||
|-
| PIO9||32||Bi-directional||Programmable input/output line||
|-
| PIO10||33||Bi-directional||Programmable input/output line||
|-
| PIO11||34||Bi-directional||Programmable input/output line||
|}

{| class="wikitable"
|-
| align="center" style="background:#f0f0f0;"|'''PIN Name'''
| align="center" style="background:#f0f0f0;"|'''PIN #'''
| align="center" style="background:#f0f0f0;"|'''PAD Type'''
| align="center" style="background:#f0f0f0;"|'''Description'''
| align="center" style="background:#f0f0f0;"|'''Note'''
|-
| RESETB||11||CMOS input with weak internal pull-up||Reset of low.input debouncde so must be low for >5MS to cause a reset||
|-
| UART_RTS||4||CMOS output, tri-stable with weak internal pull-up||UART request to send, active low||
|-
| UART_CTS||3||CMOS input with weak internal pull-down||UART clear to send, active low||
|-
| UART_RX||2||CMOS input with weak internal pull-down||UART Data input||
|-
| UART_TX||1||CMOS output, tri-stable with weak internal pull-up||UART Data output||
|-
| SPI_MOSI||17||CMOS input with weak internal pull-down||Serial peripheral interface data input||
|}

{| class="wikitable"
|-
| align="center" style="background:#f0f0f0;"|'''PIN Name'''
| align="center" style="background:#f0f0f0;"|'''PIN #'''
| align="center" style="background:#f0f0f0;"|'''PAD Type'''
| align="center" style="background:#f0f0f0;"|'''Description'''
| align="center" style="background:#f0f0f0;"|'''Note'''
|-
| SPI_CSB||16||CMOS input with weak internal pull-up||Chip select for serial peripheral interface, active low||
|-
| SPI_CLK||19||CMOS input with weak internal pull-down||Serial peripheral interface clock||
|-
| SPI_MISO||18||CMOS input with weak internal pull-down||Serial peripheral interface data output||
|-
| USB_-||15||Bi-directional||||
|-
| USB_+||20||Bi-directional||||
|-
| NC||14||||||
|-
| PCM_CLK||5||Bi-directional||Synchronous PCM data clock||
|-
| PCM_OUT||6||CMOS output||Synchronous PCM data output||
|-
| PCM_IN||7||CMOS input||Synchronous PCM data input||
|-
| PCM_SYNC||8||Bi-directional||Synchronous PCM data strobe
|}

==AT command Default==
How to set the mode to server (master):
 
1. Connect PIO11 to high level. 

2. Power on, module into command state. 

3. Using baud rate 38400, sent the “AT+ROLE=1\r\n” to module, with “OK\r\n” 
means setting successes. 

4. Connect the PIO11 to low level, repower the module, the module work as server 
(master). 
 
AT commands: (all end with \r\n) 
===1. Test command:===
{| class="wikitable"
|-
| align="center" style="background:#f0f0f0;"|'''Command'''
| align="center" style="background:#f0f0f0;"|'''Respond'''
| align="center" style="background:#f0f0f0;"|'''Parameter'''
|-
| AT||OK||-
|}

===2. Reset===
{| class="wikitable"
|-
| align="center" style="background:#f0f0f0;"|'''Command'''
| align="center" style="background:#f0f0f0;"|'''Respond'''
| align="center" style="background:#f0f0f0;"|'''Parameter'''
|-
| AT+RESET||OK||-
|}

===3. Get firmware version===
{| class="wikitable"
|-
| align="center" style="background:#f0f0f0;"|'''Command'''
| align="center" style="background:#f0f0f0;"|'''Respond'''
| align="center" style="background:#f0f0f0;"|'''Parameter'''
|-
| AT+VERSION?||+VERSION:<Param> OK ||Param : firmware version
|}

'''Example:''' 

AT+VERSION?\r\n 

+VERSION:2.0-20100601 

OK

===4. Restore default===
{| class="wikitable"
|-
| align="center" style="background:#f0f0f0;"|'''Command'''
| align="center" style="background:#f0f0f0;"|'''Respond'''
| align="center" style="background:#f0f0f0;"|'''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===
{| class="wikitable"
|-
| align="center" style="background:#f0f0f0;"|'''Command'''
| align="center" style="background:#f0f0f0;"|'''Respond'''
| align="center" style="background:#f0f0f0;"|'''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:===
{| class="wikitable"
|-
| align="center" style="background:#f0f0f0;"|'''Command'''
| align="center" style="background:#f0f0f0;"|'''Respond'''
| align="center" style="background:#f0f0f0;"|'''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:===
{| class="wikitable"
|-
| align="center" style="background:#f0f0f0;"|'''Command'''
| align="center" style="background:#f0f0f0;"|'''Respond'''
| align="center" style="background:#f0f0f0;"|'''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:===
{| class="wikitable"
|-
| align="center" style="background:#f0f0f0;"|'''Command'''
| align="center" style="background:#f0f0f0;"|'''Respond'''
| align="center" style="background:#f0f0f0;"|'''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===
{| class="wikitable"
|-
| align="center" style="background:#f0f0f0;"|'''Command'''
| align="center" style="background:#f0f0f0;"|'''Respond'''
| align="center" style="background:#f0f0f0;"|'''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)===
{| class="wikitable"
|-
| align="center" style="background:#f0f0f0;"|'''Command'''
| align="center" style="background:#f0f0f0;"|'''Respond'''
| align="center" style="background:#f0f0f0;"|'''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===
{| 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:===
{| 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:===
{| 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:===
{| 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:===
{| 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===
{| 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===
{| 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===
{| 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===
{| 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===
{| 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===
{| 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===
{| 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===
{| 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===
{| 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===
{| 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===
{| 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===
{| 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===
{| 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===
{| 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===
{| 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===
{| 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===
{| 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===
{| 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===
{| 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'''
 
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==
[ftp://imall.iteadstudio.com/Modules/IM120723009/DS_IM120723009.pdf Datasheet]

[[:File:ATSZR170210006001-RoHS-Eng-A(1).pdf | ATSZR170210006001-RoHS]]

[[:File:SZR170210006001-4P HBCDD-Eng-A.pdf | SZR170210006001-4P HBCDD]]

==Useful Links==