---
id: buttons
title: Buttons
sidebar_label: Buttons
sidebar_position: 3
---

## Functionality

- **Reset Button**
	- _**Single press**_ resets the device.
	- _**Double press**_ sets the Device in bootloader mode and mounts a drive to your computer (nRF52 devices only)
- **Program button**
	- _**Single press**_ changes the page of information displayed on the screen.
	- _**Double press**_ sets the Bluetooth pairing code to `123456`.
	- _**Long press**_ adjusts the contrast of the screen.
	- _**Long press during reboot**_ turns on the software WiFi access point.


## GPIO IO12 - TTGO Lora V2.1-1.6

Shorting IO12 to ground will progress the screen pages, wake up the device, etc. A simple push switch can be added for this purpose.

[<img src="/img/hardware/lora32-v2-1.6-button.jpg" style={{zoom:'30%'}} />](/img/hardware/lora32-v2-1.6-button.jpg)
[<img src="/img/hardware/lora32-v2-1.6-button-example.jpg" style={{zoom:'30%'}} />](/img/hardware/lora32-v2-1.6-button.jpg)