3.3.1 Mechanical Buttons

The WLR089 Xplained Pro Evaluation board consists of two mechanical buttons:
  • RESET button connected to the WLR089U0 module Reset line
    • When the RESET button is pressed, it drives the I/O line to ground
  • Generic user-configurable button
    • When the user button is pressed, it drives the I/O line to ground
Note: There is no pull-up resistor connected to the generic user button; enable the internal pull-up in the WLR089U0 module to use the button.
Table 3-5. Mechanical Buttons
Pin on WLR089U ModuleSilkscreen TextShared functionality
RESET_NRESETEDBG, Cortex® Debug Connector (J303)
PA28SW0EXT1