User Manual

Getting Started
 2014 Microchip Technology Inc. DS50002325A-page 23
FIGURE 2-3: VIEW CURRENT SETTINGS
2.7 OPERATING MODES
The Bluetooth device has several Operating modes, which user can set using the SM
command in Command mode.
2.7.1 Slave Mode (SM,0)
This is the default mode, in which other Bluetooth devices can discover and connect to
the device. Outbound connections can also be performed in this mode.
2.7.2 Master Mode (SM,1)
In this low-speed connection mode, the device makes a connection when a connect
command (c) is received. This command can also contain the Bluetooth address of the
remote device. If a device is not specified, the module uses the stored remote address.
The connection can be broken if the special break character or string is sent. To set the
break character, use the SO command. This mode is useful when user needs the device
to initiate connections (not to receive them). In this mode, the device is not discoverable
or connectable.
2.7.3 Trigger Mode (SM,2)
In this low-speed connection mode, the device automatically connects when a charac-
ter is received on the serial port (UART). The connection continues as long as charac-
ters are received on either end. The device has a configurable timeout (user can set
using the ST command) that disconnects the module after the specified number of sec-
onds of inactivity (1 to 255), or a configurable break character is received.
Note: In all Master modes, the device cannot be discovered or configured
remotely over Bluetooth.