PicoSoC demo
~~~~~~~~~~~~
This example features a picorv32 soft CPU and a SoC based on it. To build the
picosoc example, run the following commands:
.. code-block:: bash
:name: example-picosoc-a35t-group
TARGET="arty_35" make -C picosoc_demo
.. code-block:: bash
:name: example-picosoc-a100t-group
TARGET="arty_100" make -C picosoc_demo
.. code-block:: bash
:name: example-picosoc-nexys4ddr-group
TARGET="nexys4ddr" make -C picosoc_demo
.. code-block:: bash
:name: example-picosoc-basys3-group
TARGET="basys3" make -C picosoc_demo
At completion, the bitstreams are located in the build directory:
.. code-block:: bash
cd picosoc_demo/build/<board>
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"
You should observe the following line in the OpenOCD output:
.. code-block::
Info : JTAG tap: xc7.tap tap/device found: 0x0362d093 (mfg: 0x049 (Xilinx), part: 0x362d, ver: 0x0)
The UART output should look as follows:
.. code-block::
Terminal ready
Press ENTER to continue..
Press ENTER to continue..
Press ENTER to continue..
Press ENTER to continue..
____ _ ____ ____
| _ \(_) ___ ___/ ___| ___ / ___|
| |_) | |/ __/ _ \___ \ / _ \| |
| __/| | (_| (_) |__) | (_) | |___
|_| |_|\___\___/____/ \___/ \____|
[9] Run simplistic benchmark
Command>
.. note::
PicoSoC uses baud rate of ``460800`` by default.
The board's LED should blink at a regular rate from left to the right
.. image:: ../../docs/images/picosoc-example-basys3.gif
:width: 49%
:align: center
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