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# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301, USA.
#
from __future__ import division
import pcbnew
import HelpfulFootprintWizardPlugin
import PadArray as PA
class QFPWizard(HelpfulFootprintWizardPlugin.HelpfulFootprintWizardPlugin):
def GetName(self):
return "QFP"
def GetDescription(self):
return "Quad Flat Package footprint wizard"
def GenerateParameterList(self):
self.AddParam("Pads", "n", self.uNatural, 100)
self.AddParam("Pads", "pad pitch", self.uMM, 0.5)
self.AddParam("Pads", "pad width", self.uMM, 0.25)
self.AddParam("Pads", "pad length", self.uMM, 1.5)
self.AddParam("Pads", "vertical pitch", self.uMM, 15)
self.AddParam("Pads", "horizontal pitch", self.uMM, 15)
self.AddParam("Pads", "oval", self.uBool, True)
self.AddParam("Package", "package width", self.uMM, 14)
self.AddParam("Package", "package height", self.uMM, 14)
self.AddParam("Package", "courtyard margin", self.uMM, 1)
def CheckParameters(self):
self.CheckParamInt("Pads", "*n", is_multiple_of=4)
self.CheckParamBool("Pads", "*oval")
def GetValue(self):
return "QFP_%d" % self.parameters["Pads"]["*n"]
def BuildThisFootprint(self):
pads = self.parameters["Pads"]
pad_pitch = pads["pad pitch"]
pad_length = self.parameters["Pads"]["pad length"]
pad_width = self.parameters["Pads"]["pad width"]
v_pitch = pads["vertical pitch"]
h_pitch = pads["horizontal pitch"]
pads_per_row = pads["*n"] // 4
row_len = (pads_per_row - 1) * pad_pitch
pad_shape = pcbnew.PAD_SHAPE_OVAL if pads["*oval"] else pcbnew.PAD_SHAPE_RECT
h_pad = PA.PadMaker(self.module).SMDPad( pad_length, pad_width,
shape=pad_shape, rot_degree=90.0)
v_pad = PA.PadMaker(self.module).SMDPad( pad_length, pad_width, shape=pad_shape)
#left row
pin1Pos = pcbnew.wxPoint(-h_pitch / 2, 0)
array = PA.PadLineArray(h_pad, pads_per_row, pad_pitch, True, pin1Pos)
array.SetFirstPadInArray(1)
array.AddPadsToModule(self.draw)
#bottom row
pin1Pos = pcbnew.wxPoint(0, v_pitch / 2)
array = PA.PadLineArray(v_pad, pads_per_row, pad_pitch, False, pin1Pos)
array.SetFirstPadInArray(pads_per_row + 1)
array.AddPadsToModule(self.draw)
#right row
pin1Pos = pcbnew.wxPoint(h_pitch / 2, 0)
array = PA.PadLineArray(h_pad, pads_per_row, -pad_pitch, True,
pin1Pos)
array.SetFirstPadInArray(2*pads_per_row + 1)
array.AddPadsToModule(self.draw)
#top row
pin1Pos = pcbnew.wxPoint(0, -v_pitch / 2)
array = PA.PadLineArray(v_pad, pads_per_row, -pad_pitch, False,
pin1Pos)
array.SetFirstPadInArray(3*pads_per_row + 1)
array.AddPadsToModule(self.draw)
lim_x = self.parameters["Package"]["package width"] / 2
lim_y = self.parameters["Package"]["package height"] / 2
inner = (row_len / 2) + pad_pitch
#top left - diagonal
self.draw.Line(-lim_x, -inner, -inner, -lim_y)
# top right
self.draw.Polyline([(inner, -lim_y), (lim_x, -lim_y), (lim_x, -inner)])
# bottom left
self.draw.Polyline([(-inner, lim_y), (-lim_x, lim_y), (-lim_x, inner)])
# bottom right
self.draw.Polyline([(inner, lim_y), (lim_x, lim_y), (lim_x, inner)])
# Courtyard
cmargin = self.parameters["Package"]["courtyard margin"]
self.draw.SetLayer(pcbnew.F_CrtYd)
sizex = (lim_x + cmargin) * 2 + pad_length
sizey = (lim_y + cmargin) * 2 + pad_length
self.draw.Box(0, 0, sizex, sizey)
#reference and value
text_size = self.GetTextSize() # IPC nominal
text_offset = v_pitch / 2 + text_size + pad_length / 2
self.draw.Value(0, text_offset, text_size)
self.draw.Reference(0, -text_offset, text_size)
QFPWizard().register()
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