SymbiFlow Toolchain Examples for QuickLogic EOS S3
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#. ``btn_counter`` - simple 4-bit counter driving LEDs. The design targets the `EOS S3 FPGA <https://www.quicklogic.com/products/eos-s3/>`__.

Setting up the toolchain
------------------------

.. toolchain_include_begin_label

.. code:: bash

        export INSTALL_DIR="/opt/symbiflow/eos-s3"
        bash conda_installer.sh -b -p $INSTALL_DIR/conda && rm conda_installer.sh
        source "$INSTALL_DIR/conda/etc/profile.d/conda.sh"
        conda env create -f eos-s3/environment.yml
        conda activate eos-s3
        wget -qO- https://quicklogic-my.sharepoint.com/:u:/p/kkumar/Eb7341Bq-XRAukVQ6oQ6PrgB-qdFbrsrPEON1yTa4krFSA?download=1 | tar -xJ -C $INSTALL_DIR
        cp -r $INSTALL_DIR/conda/envs/eos-s3/share/yosys/* $INSTALL_DIR/conda/envs/eos-s3/share/
        conda deactivate

.. toolchain_include_end_label

Building the examples
---------------------

.. build_examples_include_begin_label

Before building example, prepare environment:

.. code:: bash

        export INSTALL_DIR="/opt/symbiflow/eos-s3"
        export PATH="$INSTALL_DIR/install/bin:$PATH"
        source "$INSTALL_DIR/conda/etc/profile.d/conda.sh"
        conda activate eos-s3

        git clone https://github.com/SymbiFlow/symbiflow-examples && cd symbiflow-examples

To build the example, run the following command:

.. code:: bash

        pushd eos-s3/btn_counter && make && popd

.. build_examples_include_end_label