2021-07-14 21:41:09 -04:00
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Stop Watch
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~~~~~~~~~~~~
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This example is built specificity for the arty_35T and demonstrates a greater variety of I/O and
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demonstrates a PWM that drives the RGB leds on the board. To build this example run the following
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commands:
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.. code-block:: bash
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2021-07-16 22:32:06 -04:00
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:name: example-pulse-arty-35t
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2021-07-14 21:41:09 -04:00
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make -C pulse_width_led
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At completion, the bitstreams are located in the build directory:
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.. code-block:: bash
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cd stop_watch/build/arty_35
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Now, you can upload the design with:
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.. code-block:: bash
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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"
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After downloading the bitstream, you can control the color of RGB led 0 by toggling different
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switches and buttons on and off. From left to right: switches 3,2,1 control the amount of blue,
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switch 0 and buttons 3 and 2 control the amount of red, and buttons 1 and 0 control the amount of
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green. The following provides an example:
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.. image:: ../../docs/images/pwm.gif
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:align: center
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:width: 50%
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