Users Manual

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5.10 Master Scanning Operation Command
Command format： AT+SCAN_START\r\n
Return value： OK\r\n
ERR:CODE\r\n
Content：Start Bluetooth scanning. It can be operated in master mode and
Bluetooth is not connected.
Command format： AT+SCAN_STOP\r\n
Return value： OK\r\n
ERR:CODE\r\n
Content：Stop Bluetooth scanning. It can be operated in master mode and
Bluetooth is not connected.
5.11 Set Bluetooth Connection Interval Time Command
Command format： AT+CIT=100\r\n
Return value： OK\r\n
ERR:CODE\r\n
Content： The effective Bluetooth connection interval time is 10ms—2000ms, and
the factory default is 45ms. Reset the Bluetooth connection interval time to 100ms.
Returning value OK indicates successful reset and ERR indicates reset failure.
Note: The module does not support modifying connection interval time during
the dynamic process. The modification will take effect after restarting the module.
In the Bluetooth connecting state, it cannot be modified and the Bluetooth
connection needs to be disconnected. The shorter the Bluetooth connection
interval time, the faster the Bluetooth communication rate and the higher the
power consumption.
5.12 Bluetooth Connection Operation Command
Command format： AT+CONN=F0F1F2F3F4F5r\n
Return value： OK\r\n
ERR:CODE\r\n
Content： Set the MAC address of the target device connected by Bluetooth in
master mode, little-endian; After the setting is successful and scanning is turned
on, the master will automatically connect to the device; If the target device is not
set, the master will connect to the first slave module found by default(Only for
WT52810-S1, WT52832-S2, WT52840-S1 series modules).
Command format： AT+CONN?\r\n
Return value： F0F1F2F3F4F5F6\r\n