AVR-BLE Hardware

3.5.9 Mechanical Switch

The AVR-BLE board has one mechanical switch. This is a generic user-configurable switch that will drive the connected I/O line to ground (GND) when it is pressed. An external resistor pulls the signal high when the switch is not pressed.

Holding the switch during power-up can be used to put the Bluetooth module in Configuration mode. See RN4870 BLE Module for more information.

Table 3-10. Mechanical Switch Connection
Switch	ATmega3208 Pin	Function	Shared Functionality
SW0	PF3	User switch	RN4870 and on-board debugger

Info: The SW0 signal is pulled up by an external resistor.

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