3.3. Rendering Switch and Connection Boxes

This example demostrate how a switch box (SB) and connection box (CB) can be rendered in a SVG format.

Full Switch Box [ SB_1__1_ ]

Horizontal Connection Box

Vertical Connection Box

Arbitrary arrangement of vertical connection box channels and pins

import glob
import logging
from os import path

import numpy as np
import spydrnet as sdn
from spydrnet_physical.util import RoutingRender

logger = logging.getLogger("spydrnet_logs")
sdn.enable_file_logging(LOG_LEVEL="DEBUG", filename="02_render_routing_box")

scale = 50
SPACING = 150

np.set_printoptions(linewidth=200)


def main():
    proj = "../homogeneous_fabric"
    return
    for indx, sb in enumerate(glob.glob(f"{proj}/*_Verilog/routing/sb_1__1_.v")):
        module = path.splitext(path.basename(sb))[0]

        # This creates switch-box rendering class
        sb_render = RoutingRender(module, f"{proj}/FPGA44_gsb/{module}.xml")
        # Print stats of switch box
        sb_render.get_stats(print_header=bool(indx == 0))
        # Render full switch-box and save as SVG
        sb_render.render_switch_pattern()
        sb_render.save(filename=f"_{module}.svg")
        sb_render.render_connection_box("left", filename="_cbx_1__1_.svg")
        sb_render.render_connection_box("top", filename="_cbx_1__2_.svg")

        # Report incoming channel information
        print("\n left incoming channels")
        sb_render.report_incoming_channels("left")
        print("\n right incoming channels")
        sb_render.report_incoming_channels("right")
        print("\n top incoming channels")
        sb_render.report_incoming_channels("top")
        print("\n bottom incoming channels")
        sb_render.report_incoming_channels("bottom")

        # Report outgoing channel information
        print("\nleft outgoing channels")
        sb_render.report_outgoing_channels("left")
        print("\nright outgoing channels")
        sb_render.report_outgoing_channels("right")
        print("\ntop outgoing channels")
        sb_render.report_outgoing_channels("top")
        print("\nbottom outgoing channels")
        sb_render.report_outgoing_channels("bottom")

        # Arbitrary Arrangement of Connection Box
        def channel_map(side, x):
            lbl = side[0].upper() + str(x)
            # fmt: off
            chan_map = [
            "R0", "R1", "R2", "R3", "L0", "L1", "L2", "L3",
            "R4", "R5", "R6", "R7", "", "",
            "L4", "L5", "L6", "L7", "R8", "R9", "L8", "L9", ]
            # fmt: on
            if lbl in chan_map:
                indx = chan_map.index(lbl) if lbl in chan_map else x
                return (20 - indx) if side == "left" else indx
            else:
                return x

        sb_render.render_connection_box(
            "top",
            # fmt: off
            pinmap=lambda x: [0,  2,  4,  6,  8,
                              10,  12, 14,  16,  18,
                              20, 22, 24, 26, 28,
                              30, 32, 34, 36, 38,
                              None, None, None, None, None,
                              1, 3, 5, 7, 9,
                              11, 13, 15, 17, 19,
                              21, 23, 25, 27, 29,
                              31, 33, 35, 37, 39].index(x),

            channel_map=channel_map,
            filename="_cbx_1__1_arrangement.svg",
        )
        # fmt: on


if __name__ == "__main__":
    main()