Button Controller
~~~~~~~~~~~~~~~~~
This example demonstrates using a button debouncer state machine to count the number of presses on the
center button of the basys3 board. The number of presses counted by the debouncer state machine will
be given on the two right most digits of the display. The two left most digits record the number of
presses counted without the debouncer. You can reset the button counter by pressing the up button on
the board. To build the design first navigate to the additional examples directory:
.. code-block:: bash
:name: additional-examples
cd additional_examples
Then run make to compile the design:
.. code-block:: bash
:name: example-debouncer-basys3
make -C button_controller
At completion, the bitstream is located in the build directory:
.. code-block:: bash
cd button_controller/build/basys3
Now, you can upload the design with:
.. code-block:: bash
openocd -f ${INSTALL_DIR}/${FPGA_FAM}/conda/envs/${FPGA_FAM}/share/openocd/scripts/board/digilent_arty.cfg -c "init; pld load 0 top.bit; exit"
The following is an example of the debouncer in action:
.. image:: ../images/debounce.gif
:align: center
:width: 50%
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