Ehong EH-MA41, User Manual

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EH-MA41 User Guide
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Parity The parity of UART mode
Value: 00h
– 02h
00: No parity
01: Odd parity
02: Even parity
Default: 00 (No parity)
O
Latency The latency mode
Value: 00h or 01h
00: Throughput priority
01: Low latency priority
Default: 01( Low latency priority)
O
5.1.12.4. Examples:
Ex. 5.32. To query the UART mode of Bluetooth module:

AT+UM<CR><LF>

query the UART mode.

UM=00,00,01<CR><LF>

report the UART mode,
it’s 1 stop bit, no parity and low latency priority.
Ex. 5.33. To change the UART mode of Bluetooth module:

AT+UM=01,01<CR><LF>

change the UART mode to 2 stop bits and odd parity.

OK<CR><LF>

response from the module to indicate the command is adopted.
Notes:
1. The response will be sent in current UART mode.
Ex. 5.34. To change the UART mode to throughput priority:

AT+UM=00,00,00<CR><LF>

change the UART mode to 1 stop bits, no parity and throughput priority.

OK<CR><LF>

response from the module to indicate the command is adopted.
5.1.13. UI
—Query or configure the UART indicator 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 immediately and until the next time the module is configured by this
command. 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.
If the parameter is not presented, the Bluetooth module will report current configuration by the Indicator UI.
5.1.13.2. Syntax:
Synopsis:
AT+UI[=State]<CR><LF>
5.1.13.3. Parameter Description:
Parameter Description Mandatory Comments
State
The new state of UART indicator
output mode
Value: 00h or 01h
00: Disabled
01: Enabled
o
Default: 01
(Enabled)
5.1.13.4. Examples:
Ex. 5.35. To query current UART indicator output mode of the Bluetooth module:

AT+UI<CR><LF>

query current UART indicator output mode.

UI=01<CR><LF>

report the UART indicator output is enabled currently.
Notes:
If the UART indicator output is disabled currently, the report will not be output.
Ex. 5.36. To disable the UART indicator output:

AT+UI=00<CR><LF>

disable the UART indicator output