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                                                                                     EH-MA41 User Guide

 

 

 

 

 

 

9-26

 

AT Link Lost

 

 

The attempt times of reconnect 
after link lost. 
Value: 00h

—FFh 

00: No reconnect attempt will be 
performed after link lost. 

 

01-FE: The attempt times of 
reconnect after link lost. 
FF: The reconnect attempt will be 
performed permanently. 

 

Default: FF (Permanent)

 

O

 

 

Interval

 

The interval between each 
reconnect attempt after link lost. 
The unit is second. Value: 00h

FFh 
Default: 0A (10 seconds)

 

 

O

 

 

 

Disc Mode

 

The discoverable mode. 
Value: 00h

—03h 

00: The module will enter or quit 
discoverable mode just by the 
command AT+MD=xx. 
01: The module will enter 
discoverable mode automatically 
when paired device list is empty. 
02: The module will enter 
discoverable mode automatically 
when power on. 
03: The module will enter 
discoverable mode automatically 
when there is no connection. 
Default: 01 (Auto discoverable 
when empty)

 

O

 

Even if the 

discoverable is set 

one of the auto 

mode (01 h

—03h), 

it can also be 

controlled by the 

command 

AT+MD=xx.

 

Disc Time out

 

The timeout of discoverable status. 
The unit is second. 
Value: 0000h

—FFFFh 

0000: No timeout for discoverable 
status.

 

 

O

 

 

 

0001-FFFF: The timeout in second of discoverable status.  

Notes: 

 

The default feature configuration may be different per software version. 

 

 

   

      

5.1.5.4. Examples: 

 

 Ex. 5.9. To query current feature configuration of Bluetooth module:  

 AT+FT<CR><LF>                                        

 query current feature configuration. 

 

 FT=FF,00,FF,0A,01,0078<CR><LF>           

 report current feature configuration.  

 

 The auto connection after power on has been enabled as permanent mode; 

 

 The auto connect after paired has been disabled; 

 

 The auto reconnect after link lost has been enabled as permanent mode; 

 

 The interval of auto reconnect has been set to 10s. 

 

 Set the discoverable mode as auto discoverable when empty. 

 

 The timeout of discoverable is 120s. 

 

  

 Ex. 5.10. To configure the features of Bluetooth module:  

 AT+FT=14,00,00,0A<CR><LF>        

 configure the module features: 

 

 Set the attempt time of auto connect after power on as 20 times; 

 

 Disable the auto connect after paired; 

 

 No reconnect attempt will be performed after link lost; 

 

 Set the interval of auto reconnect to 10s. 

 

 Keep the discoverable mode and timeout as it was. 

 

 OK<CR><LF>                                  

 response from the module to indicate the command is adopted.  

Содержание EH-MA41

Страница 1: ...cations detailed herein at any time without notice and does not make any commitment to update the information contained herein Ehong Technologies products are not authorized for use as critical compon...

Страница 2: ...hange the local friendly name 13 5 1 11 BR Query or change the UART baud rate 13 5 1 12 UM Query or configure the UART mode 14 5 1 13 UI Query or configure the UART indicator output mode 15 5 1 14 DB...

Страница 3: ...All of the indicators are listed in section 4 is the separator between command indicator and parameter It s only needed if a parameter is presented Para1 is the first parameter Not all of the command...

Страница 4: ...dule FT Query or configure the features of the module MM Query or configure Man In The Middle protection feature IO Query or configure IO capability of local device MT Query or configure force to be m...

Страница 5: ...al friendly name of the module IF Host interface of the module BR UART baud rate UM Configuration of UART mode UI Configuration of UART indicator output RC Configuration of remote control function PM...

Страница 6: ...efault 00 M Hid HID disable or enable Value 00 or 01 Default 00 M 5 1 1 4 Examples Ex 5 1 To query current profile configuration of Bluetooth module MA41 or MA46 AT PF CR LF query current profile conf...

Страница 7: ...imum TX power in dBm Bluetooth power control may raise the TX power up to this value Value a 8 digits signed number Default 00 O The values of this parameter will always be rounded to the next availab...

Страница 8: ...e the features of Bluetooth module Once configured the configuration will take effect immediately and until the next time the module is configured by this command It means the Bluetooth module will re...

Страница 9: ...ble status The unit is second Value 0000h FFFFh 0000 No timeout for discoverable status O 0001 FFFF The timeout in second of discoverable status Notes The default feature configuration may be differen...

Страница 10: ...ot active or out range the two victim devices will not be able to communicate directly with each other and the user will notice it 2 To prevent MITM attacks Secure Simple Pairing offers two user assis...

Страница 11: ...lay Only The local device can only display 01 Display Yes No The local device can display and select Yes or No 02 Keyboard Only The local device can only input 03 No IO The local device has no IO capa...

Страница 12: ...e master feature AT MT CR LF query current state of force to be master feature MT 00 CR LF report the force to be master feature is deactivated currently Ex 5 17 To active the force to be master featu...

Страница 13: ...LF query current local friendly name NM EH MA41 CR LF report current local friendly name it s EH MA41 Ex 5 27 To change the local friendly name of Bluetooth module AT NM MY_BT_DEVICE CR LF change the...

Страница 14: ...odule AT BR 0C CR LF change the baud rate to 115200 OK CR LF response from the module to indicate the command is adopted Notes The response will be sent in current baud rate 5 1 12 UM Query or configu...

Страница 15: ...cator output mode 5 1 13 1 Description This command can query or configure disable or enable the UART indicator output mode of Bluetooth module Once configured the configuration will take effect immed...

Страница 16: ...e the content received from UART to find if there is a BP command so the speed is affected accordingly 1 High speed mode When working in this mode the Bluetooth module will transfer the content receiv...

Страница 17: ...he pairing mode is enabled it can be paired bonded with other Bluetooth device If the parameter is not presented the Bluetooth module will report current status of pairing mode by the Indicator PA 5 1...

Страница 18: ...pted 5 1 18 CP Clear the paired Bluetooth device list 5 1 18 1 Description This command can clear the paired device list stored in the Bluetooth module If there is some Bluetooth device is connected w...

Страница 19: ...ice which address is 00 18 96 00 00 0A CS 00 00189600000A CR LF connecting result success SS 02 00189600000A CR LF the Bluetooth module is now connected to the specified SPP device Ex 5 79 To connect...

Страница 20: ...ectable SS 40 CR LF the SPP channel 4 of Bluetooth module is now connectable SS 50 CR LF the SPP channel 5 of Bluetooth module is now connectable 5 2 4 DT Send data packet to remote SPP device 5 2 4 1...

Страница 21: ...01 00189600000A CR LF the Bluetooth module is now connecting to the specified HID host which address is 00 18 96 00 00 0A CI 00 00189600000A CR LF connecting result success IS 02 00189600000A CR LF t...

Страница 22: ...n in ASCII characters and separated by comma while in Bypass mode all of the data field should be given in raw data binary and no separator is needed About the Proxy mode and Bypass mode please refer...

Страница 23: ...an Previous Track 00 02 Stop 00 04 Eject 00 08 Fast Forward 00 10 Rewind 00 20 Stop Eject 00 40 AL Internet Browser 00 80 Ex 5 93 To increase the volume the consumer key report should be A1 02 10 00 E...

Страница 24: ...mmand is adopted AT KR A1 03 00 03 C0 FF 00 CR LF send a mouse report to the HID host The mouse is move to upper right OK CR LF response from the module to indicate the command is adopted AT KR A1 03...

Страница 25: ...d report to the HID host OK CR LF response from the module to indicate the command is adopted AT KR A1 04 F6 00 00 00 00 05 06 40 CR LF send a joystick gamepad report to the HID host OK CR LF response...

Страница 26: ...presents character 5 3 5 4 Examples Ex 5 104 To send an ASCII string to HID host AT AS Hello Bluetooth HID CR LF send an ASCII string to the HID host OK CR LF response from the module to indicate the...

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