4.3.2 Mechanical Buttons
SAM V71 Xplained Ultra contains three mechanical buttons. One button is the RESET button connected to the SAM V71 reset line and the others are generic user configurable buttons. When a button is pressed it will drive the I/O line to GND.
Info: There are no pull-up resistors connected to the generic user buttons, remember to
enable the internal pull-up in the SAM
V71 to use the
button.
Info: PB12 is
set up as a system flash ERASE pin when the firmware boots. To use the SW1, PB12 has to
be configured as a normal regular I/O pin in the MATRIX module. For more information,
see the SAM
V71 datasheet.