Timer
~~~~~~
This example is built specifically for the basys3 and demonstrates a greater variety of I/O
then previous designs. It also demonstrates symbiflow's support for code written in System Verilog
as well as its support of dictionaries in XDCs. To build this example run the following commands:
.. code-block:: bash
:name: example-watch-basys3
make -C timer
At completion, the bitstream is located in the build directory:
.. code-block:: bash
cd timer/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"
After downloading the bitstream you can start and stop the watch by toggling switch 0 on the board.
Press the center button to reset the counter. The following gives a visual example:
.. image:: ../../docs/images/timer.gif
:align: center
:width: 50%
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