Specifications

HM-BT4502 V1.0
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9.5 Set the Baud Rate
Input the string "TTM: BPS-X" to the serial port RX to set the baud rate, among
them, X= "9600", "19200", "38400", "57600", "115200" (the above data format
is ASCII code). For example, "TTM: BPS-115200" indicates that the baud rate
is115200 bps. After executing this instruction, the following confirmation string
"TTM: BPS SET AFTER 2S..." will be received from the serial port TX. If the
setting value is not in the option or the instruction format is incorrect, the string
"TTM: ERP\r\n\0"will be received.
Tests show that the baud rate modification cannot be successful in IOS5, but it
can be changed immediately in IOS6. Users can set it through PC or BLE APP
of mobile devices. See the Chapter of
Module Parameter Settings [Service
UUID: 0xFF90]
.
9.6 Get the Module MAC Address
Input the string "TTM: MAC-? \r\n\0"to the serial port RX.
"TTM: MAC-xxxxxxxxxxxx\r\n\0" will be received from TX.
The "xxxxxxxxxxxx" following the string is the Bluetooth module physical
address. The size is 6 bytes.