EH-MA41 User Guide
16-26
no response output because the UART indicator output has been disabled
Ex. 5.37. To enable the UART indicator output:
AT+UI=01<CR><LF>
enable the UART indicator output
OK<CR><LF>
response from the module to indicate the command is adopted.
5.1.14. DB
—Query or configure the default Bypass mode
5.1.14.1. Description:
This command can query or configure the default bypass mode of Bluetooth module. Once configured, the configuration
will take effect at the next time the module is power on. It means the Bluetooth module will remember the configuration
and even if the Bluetooth module has been powered off, the configuration will not be lost, but the configuration will NOT
take effect immediately.
5.1.14.2. Syntax:
Synopsis:
AT+DB[=Enable][,SpeedMode]<CR><LF>
5.1.14.3. Parameter Description:
Parameter
Description
Mandatory
Comments
Enable
The new Bypass channel mode:
Value:
00: Proxy mode
01: Enable transparent transfer mode
Default: 00
O
Speed Mode
The new Bypass speed mode:
Value: 00h or 01h
00: Normal speed
01: High speed
Default: 00
O
There are 2 different speed mode explained below:
0. Normal speed mode
When working in this mode, the Bluetooth module will try to parse 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 received from UART to bypass channel
directly. In this case the Bluetooth module will not parse the content, so the host cannot change the bypass mode by BP
command.
2. Proxy mode
When working in this mode, the content sent to the Bluetooth module via UART port will be treated as ASCII command.
And the content sent from the Bluetooth module should be treated ASCII indicator.
When there is not any connection has been established, the Bluetooth module is working in this mode.
Note:
To configure this command, you must first disconnect to take effect.
5.1.14.4. Examples:
Ex. 5.42. To query current configuration of default Bypass mode of the Bluetooth module:
AT+DB<CR><LF>
query current configuration of default Bypass mode.
DB=00,00<CR><LF>
report the configuration of default Bypass mode.
Ex. 5.43. To configure the default Bypass mode:
AT+DB=01,01<CR><LF>
configure the default Bypass mode.
OK<CR><LF>
response from the module to indicate the command is adopted.
5.1.15. MD
—Make the Bluetooth module discoverable
5.1.15.1. Description:
This command can query or change the Bluetooth
module’s discoverable status. Only when the Bluetooth module is
discoverable, it can be found by other Bluetooth device.
