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WH000
ARM-EPM-1017464.0
Confidential
Page 15
3.5.2
Wake-up/Discoverable Button
The momentary Blue button located near the lower left corner of the module is an interrupt button on one of the
BT4 Demonstration SoC’s GPIO lines. The button has 2 functions:
1)
When the Customer Eval Board is in either of the Demo modes (Beacon or Sensor), the board will be in a
connectable mode for 30 seconds after power up. After that time, the board will shift into a low-power
operational mode. In Beacon mode, it will continue to beacon without being connectable via the provided
BT4 Browser application for configuration purposes. In Sensor mode, it will stop advertising altogether
and not be discoverable/connectable by the BT4 Browser application. Pressing the Blue button will return
the board to connectable mode again for 30 seconds. Once this time elapses, the board will re-enter its
low-power mode.
If jumpers on J22 are installed for the GPIO lines, the D4 LED with flash rapidly when the board is in a
connectable state. After 30 seconds have expired, the LED will flash slowly. The LED will also flash slowly
once it has made a wireless connection to a host device.
PLEASE NOTE:
Depending on which FW version is installed on the module, pressing the Blue button
twice (about a second apart), may be required to place the unit into a connectable mode.
2)
If the SoC has been placed in deep sleep mode, either by the Radio Control Tool or via HCI commands,
this Blue button will manually wake-up the SoC from its deep sleep state. This functionality is only
available in Test/HCI pass-through mode.
3.5.3
Mbed Reset Button
The mbed controller reset button is a Black momentary push button located in the lower left portion of the board.
This is provided only for FW updates for the mbed controller and has nothing to do with the operation of the BT4
Demonstration SoC. Under normal operation, this button will not be used. If pressed, it may momentarily interrupt
communication between the Customer Eval Board and the Radio Control Tool.