.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "auto_openfpga_basic/12_io_sequence.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

    .. note::
        :class: sphx-glr-download-link-note

        :ref:`Go to the end <sphx_glr_download_auto_openfpga_basic_12_io_sequence.py>`
        to download the full example code.

.. rst-class:: sphx-glr-example-title

.. _sphx_glr_auto_openfpga_basic_12_io_sequence.py:


=========================================
Represetes IO Sequence in OpenFPGA Engine
=========================================

This example demonstrates the ``OpenFPGA_Arch`` class which parses the
`VPR` and `OpenFPGA` Architecture file and provides logical information.

.. image:: ../../../examples/OpenFPGA_basic/_sample_io_sequence.svg
   :width: 60%
   :align: center

.. GENERATED FROM PYTHON SOURCE LINES 14-108

.. code-block:: Python

    import math
    import svgwrite
    from svgwrite.container import Group


    def draw_connections(width, height, connections):
        """
        Draw connection sequence
        """
        dwg = svgwrite.Drawing()

        DRAW_WIDTH = (width + 2) * SCALE
        DRAW_HEIGHT = (height + 2) * SCALE
        # set user coordinate space
        dwg.viewbox(width=DRAW_WIDTH, height=DRAW_HEIGHT, miny=-1 * DRAW_HEIGHT)

        dwg_main = Group(id="Main", transform="scale(1,-1)")
        dwg.add(dwg_main)

        for w in range(1, width + 2):
            dwg_main.add(
                dwg.line(
                    (w * SCALE, SCALE), (w * SCALE, (height + 1) * SCALE), stroke="red"
                )
            )

        for h in range(1, height + 2):
            dwg_main.add(
                dwg.line((SCALE, h * SCALE), ((width + 1) * SCALE, h * SCALE), stroke="red")
            )

        path = "M "
        for point in connections:
            path += " %d %d " % ((point[0] + 0.5) * SCALE, (point[1] + 0.5) * SCALE)

        dwg_main.add(dwg.path(path, stroke="blue", fill="none", stroke_width="2px"))
        dwg.saveas("_sample_io_sequence.svg", pretty=True)


    SCALE = 20
    FPGA_WIDTH = 40
    FPGA_HEIGHT = 15

    W = max(FPGA_WIDTH, FPGA_HEIGHT)
    W2 = math.floor(W / 2) + 1

    connections = []
    xmin, xmax = 1, FPGA_WIDTH
    ymin, ymax = 1, FPGA_HEIGHT

    while (xmin < xmax) and (ymin < ymax):
        print(xmin, ymin, end=" -> ")
        print(xmax, ymax)

        x = xmin
        for y in range(ymin, ymax + 1):
            connections.append((x, y))
        y = ymax
        for x in range(xmin, xmax + 1):
            connections.append((x, y))

        x = xmax
        for y in range(ymin, ymax + 1)[::-1]:
            connections.append((x, y))

        y = ymin
        for x in range(xmin, xmax + 1)[::-1][:-1]:
            connections.append((x, y))

        xmin += 1
        ymin += 1
        xmax -= 1
        ymax -= 1


    if FPGA_HEIGHT % 2 == 1:  # if height is odd
        if ymin == ymax:  # if touching vertically
            y = ymin
            for x in range(xmin, xmax + 1):
                connections.append((x, y))


    if FPGA_WIDTH % 2 == 1:  # if width is odd
        if xmin == xmax:  # if touching horizontally
            x = xmin
            for y in range(ymin, ymax + 1):
                connections.append((x, y))

    # print(connections)
    if connections:
        draw_connections(FPGA_WIDTH, FPGA_HEIGHT, connections)
    else:
        # Dummy draw
        draw_connections(FPGA_WIDTH, FPGA_HEIGHT, [(1, 1)])


.. _sphx_glr_download_auto_openfpga_basic_12_io_sequence.py:

.. only:: html

  .. container:: sphx-glr-footer sphx-glr-footer-example

    .. container:: sphx-glr-download sphx-glr-download-jupyter

      :download:`Download Jupyter notebook: 12_io_sequence.ipynb <12_io_sequence.ipynb>`

    .. container:: sphx-glr-download sphx-glr-download-python

      :download:`Download Python source code: 12_io_sequence.py <12_io_sequence.py>`

    .. container:: sphx-glr-download sphx-glr-download-zip

      :download:`Download zipped: 12_io_sequence.zip <12_io_sequence.zip>`


.. only:: html

 .. rst-class:: sphx-glr-signature

    `Gallery generated by Sphinx-Gallery <https://sphinx-gallery.github.io>`_