4.3.2 Mechanical Buttons
SAM L22 Xplained Pro contains two mechanical buttons. One button is the RESET button connected to the SAM L22 reset line and the other is a generic user configurable button. When a button is pressed it will drive the I/O line to GND.
Info: There is no pull-up resistor connected to the
generic user button. Remember to enable the internal pull-up in the SAM L22 to use the button.
| SAM L22 pin | Silkscreen text | Shared functionality |
|---|---|---|
| RESET | RESET | |
| PC01 | SW0 | EXT2, Shield, and EDBG GPIO3 |