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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 as HFPW
import PadArray as PA
class BGAPadGridArray(PA.PadGridArray):
def NamingFunction(self, n_x, n_y):
return "%s%d" % (
self.AlphaNameFromNumber(n_y + 1, alphabet="ABCDEFGHJKLMNPRTUVWY"),
n_x + 1)
class BGAWizard(HFPW.HelpfulFootprintWizardPlugin):
def GetName(self):
return "BGA"
def GetDescription(self):
return "Ball Grid Array Footprint Wizard"
def GenerateParameterList(self):
self.AddParam("Pads", "pad pitch", self.uMM, 1)
self.AddParam("Pads", "pad size", self.uMM, 0.5)
self.AddParam("Pads", "row count", self.uNatural, 5)
self.AddParam("Pads", "column count", self.uNatural, 5)
self.AddParam("Pads", "outline x margin", self.uMM, 1)
self.AddParam("Pads", "outline y margin", self.uMM, 1)
def CheckParameters(self):
self.CheckParamInt("Pads", "*row count")
self.CheckParamInt("Pads", "*column count")
def GetValue(self):
pins = (self.parameters["Pads"]["*row count"]
* self.parameters["Pads"]["*column count"])
return "BGA_%d" % pins
def BuildThisFootprint(self):
pads = self.parameters["Pads"]
rows = pads["*row count"]
cols = pads["*column count"]
pad_size = pads["pad size"]
pad_size = pcbnew.wxSize(pad_size, pad_size)
pad_pitch = pads["pad pitch"]
# add in the pads
pad = PA.PadMaker(self.module).SMTRoundPad(pads["pad size"])
pin1_pos = pcbnew.wxPoint(-((cols - 1) * pad_pitch) / 2,
-((rows - 1) * pad_pitch) / 2)
array = BGAPadGridArray(pad, cols, rows, pad_pitch, pad_pitch)
array.AddPadsToModule(self.draw)
#box
ssx = -pin1_pos.x + pads["outline x margin"]
ssy = -pin1_pos.y + pads["outline y margin"]
self.draw.BoxWithDiagonalAtCorner(0, 0, ssx*2, ssy*2,
pads["outline x margin"])
# Courtyard
cmargin = self.draw.GetLineTickness()
self.draw.SetLayer(pcbnew.F_CrtYd)
sizex = (ssx + cmargin) * 2
sizey = (ssy + cmargin) * 2
self.draw.Box(0, 0, sizex, sizey)
#reference and value
text_size = self.GetTextSize() # IPC nominal
ypos = ssy + text_size
self.draw.Value(0, ypos, text_size)
self.draw.Reference(0, -ypos, text_size)
BGAWizard().register()
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