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.