Push Buttons

There are three push buttons available on OLED1 Xplained Pro. When a button is pushed the corresponding I/O pin is connected to ground. There are no external pull-up resistors on OLED1 Xplained Pro, so internal pull-up resistors have to be enabled in the target microcontroller.

Info: Remember to enable internal pull-up resistors in the target device to get a defined electrical level on the I/O lines connected to the buttons.
Table 1. Push Buttons Connections
Pin on EXT connector Silk screen marking
9 BUTTON1
3 BUTTON2
4 BUTTON3
Parent topic: Peripherals