/
pcb.py
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/
pcb.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (c) 2011 Benedikt Seidl
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
# OTHER DEALINGS IN THE SOFTWARE.
import svg
from helper import to_pixel
def create(p, file_name):
pin, size = p.definition["pin"].split(" ", 1)
chip_width = to_pixel(p.definition["c"]) # TODO: error check
pins_gap = to_pixel(p.definition["e"]) # TODO: error check
if p.definition["ch"] != None:
chip_height = to_pixel(p.definition["ch"])
else:
chip_height = None
if pin.strip() == "THT":
is_smd = False
dimension = size.split(",")
d, pin_width, pin_height = map(to_pixel, dimension)
stroke_width = 0.5*(min(pin_width, pin_height) - d)
def add_pin(nr):
if pin_width == pin_height:
svg.add_circle(0,0, d/2+stroke_width/2, stroke_width=stroke_width, fill="none", stroke="#F7BD13")
else:
offset = pin_width/3.
svg.add_path(transform="rotate(90,0,0)",
d=(
svg.M(-pin_width/2+offset, -pin_height/2),
svg.h(pin_width-offset*2),
svg.l(offset, offset),
svg.v(pin_height-offset*2),
svg.l(-offset, offset),
svg.h(-pin_width+offset*2),
svg.l(-offset, -offset),
svg.v(-pin_height+offset*2),
svg.z(),
svg.M(0,-d/2),
svg.A(d/2, d/2, 0,1,0, 0, d/2),
svg.A(d/2, d/2, 0,1,0, 0, -d/2), # can not draw a whole circle at once :-P
svg.z()
), fill="#F7BD13")
if nr != None:
arg = dict(id="connector{0}pin".format(nr))
else:
arg = dict()
svg.add_circle(0,0, d/2+stroke_width/2, stroke_width=stroke_width, fill="none", stroke="#F7BD13", **arg)
else:
is_smd = True
pin_width,pin_height = map(to_pixel, size.split(","))
def add_pin(nr):
if nr != None:
arg = dict(id="connector{0}pin".format(nr))
else:
arg = dict()
svg.add_rect(-pin_width/2, -pin_height/2, pin_width, pin_height, fill="#F7BD13",
transform="rotate(90,0,0)", **arg)
count = len(p.getPins())
if chip_height == None:
# only two sides
svg_width = chip_width+pin_height
svg_height = pins_gap*(count/2 )+1
svg.start(svg_width, svg_height, svg_width*127/360, svg_height*127/360, "mm")
#svg.add_rect(-500,-500,1000,1000) # debug
transform_translate="translate({x},{y})".format(x=svg_width/2, y=0.5 + pins_gap * 0.5)
offset = pin_height/2 + 1.5
svg.add_start_g(id="silkscreen", transform=transform_translate)
svg.add_path(d=(
svg.M(-chip_width/2 + offset, 0-0.5*pins_gap),
svg.v(pins_gap*count/2),
svg.h(chip_width-offset*2),
svg.v(-pins_gap*count/2),
svg.z()
), stroke="#ffffff", fill="none")
svg.add_circle(-chip_width/2 + offset + 3,-0.25*pins_gap +1 ,1.5, fill="#ffffff")
svg.add_end_g()
svg.add_start_g(id="copper1", transform=transform_translate)
if not is_smd: svg.add_start_g(id="copper0")
for i in range(count/2):
#left
svg.add_start_g(transform="translate({x},{y})".format(x=-chip_width/2,y=i*pins_gap))
add_pin(i+1)
svg.add_end_g()
#right
svg.add_start_g(transform="translate({x},{y})".format(x=+chip_width/2,y=(count/2-1-i)*pins_gap))
add_pin(count-i)
svg.add_end_g()
if not is_smd: svg.add_end_g()
svg.add_end_g()
else:
# 4 sides of pins
svg_width = chip_width + pin_height
svg_height = chip_height + pin_height
svg.start(svg_width, svg_height, svg_width*127/360, svg_height*127/360, "mm")
#svg.add_rect(-500,-500,1000,1000,fill="#cccccc") # debug
transform_translate = "translate({x},{y})".format(x=chip_width/2+pin_height/2, y=chip_height/2+pin_height/2)
#svg.add_circle(0,0,1,fill="0000ff") # debug
offset_h = (chip_height - (count/4-1)*pins_gap) / 2
offset_v = (chip_width - (count/4-1)*pins_gap) / 2
svg.add_start_g(id="silkscreen", transform=transform_translate)
svg.add_circle(-chip_width/2, -chip_height/2, pin_height/2, fill="#fff")
for angle in (0,90,180,270):
svg.add_path(d=(
svg.M(-chip_width/2 + offset_h - 1, -chip_height/2),
svg.h(-offset_h+1),
svg.v(+offset_v-1),
), fill="none",
stroke="#ffffff",
stroke_width="0.5",
transform="rotate({angle})".format(angle=angle))
svg.add_end_g()
svg.add_start_g(id="copper1", transform=transform_translate)
if not is_smd: svg.add_start_g(id="copper0")
def add_pin_shortcut(i,x,y,r=0):
pin_nr = i
svg.add_start_g(transform="translate({x},{y})".format(
x=x,
y=y))
if r != 0: svg.add_start_g(transform="rotate({0})".format(r))
add_pin(pin_nr)
svg.add_end_g()
if r != 0: svg.add_end_g()
for i in range(count/4):
#left
add_pin_shortcut(
i=i+1,
x=-chip_width/2,
y=-chip_height/2 + offset_h + pins_gap*i)
#bottom
add_pin_shortcut(
i=1+ count/4 + i,
x=-chip_width/2 + offset_v + pins_gap*i,
y=chip_height/2,
r=90)
#right
add_pin_shortcut(
i=1+ 2*count/4 + i,
x=chip_width/2,
y=+chip_height/2 - offset_h - pins_gap*i)
#top
add_pin_shortcut(
i=1+ 3*count/4 + i,
x=chip_width/2 - offset_v - pins_gap*i,
y=-chip_height/2,
r=90)
if not is_smd: svg.add_end_g()
svg.add_end_g()
svg.end()
svg.write(file_name)