108 lines
3.6 KiB
Python
108 lines
3.6 KiB
Python
# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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# MA 02110-1301, USA.
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#
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from __future__ import division
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import pcbnew
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import HelpfulFootprintWizardPlugin as HFPW
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import PadArray as PA
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class BGAPadGridArray(PA.PadGridArray):
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def NamingFunction(self, n_x, n_y):
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return "%s%d" % (
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self.AlphaNameFromNumber(n_y + 1, alphabet="ABCDEFGHJKLMNPRTUVWY"),
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n_x + 1)
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class BGAWizard(HFPW.HelpfulFootprintWizardPlugin):
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def GetName(self):
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return "BGA"
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def GetDescription(self):
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return "Ball Grid Array Footprint Wizard"
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def GenerateParameterList(self):
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self.AddParam("Pads", "pad pitch", self.uMM, 1)
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self.AddParam("Pads", "pad size", self.uMM, 0.5)
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self.AddParam("Pads", "row count", self.uNatural, 5)
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self.AddParam("Pads", "column count", self.uNatural, 5)
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self.AddParam("Pads", "outline x margin", self.uMM, 1)
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self.AddParam("Pads", "outline y margin", self.uMM, 1)
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def CheckParameters(self):
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self.CheckParamInt("Pads", "*row count")
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self.CheckParamInt("Pads", "*column count")
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def GetValue(self):
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pins = (self.parameters["Pads"]["*row count"]
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* self.parameters["Pads"]["*column count"])
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return "BGA_%d" % pins
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def BuildThisFootprint(self):
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pads = self.parameters["Pads"]
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rows = pads["*row count"]
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cols = pads["*column count"]
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pad_size = pads["pad size"]
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pad_size = pcbnew.wxSize(pad_size, pad_size)
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pad_pitch = pads["pad pitch"]
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# add in the pads
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pad = PA.PadMaker(self.module).SMTRoundPad(pads["pad size"])
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pin1_pos = pcbnew.wxPoint(-((cols - 1) * pad_pitch) / 2,
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-((rows - 1) * pad_pitch) / 2)
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array = BGAPadGridArray(pad, cols, rows, pad_pitch, pad_pitch)
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array.AddPadsToModule(self.draw)
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#box
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ssx = -pin1_pos.x + pads["outline x margin"]
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ssy = -pin1_pos.y + pads["outline y margin"]
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self.draw.BoxWithDiagonalAtCorner(0, 0, ssx*2, ssy*2,
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pads["outline x margin"])
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# Courtyard
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cmargin = self.draw.GetLineThickness()
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self.draw.SetLayer(pcbnew.F_CrtYd)
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sizex = (ssx + cmargin) * 2
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sizey = (ssy + cmargin) * 2
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# round size to nearest 0.1mm, rectangle will thus land on a 0.05mm grid
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sizex = self.PutOnGridMM(sizex, 0.1)
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sizey = self.PutOnGridMM(sizey, 0.1)
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# set courtyard line thickness to the one defined in KLC
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self.draw.SetLineThickness(pcbnew.FromMM(0.05))
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self.draw.Box(0, 0, sizex, sizey)
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# restore line thickness to previous value
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self.draw.SetLineThickness(pcbnew.FromMM(cmargin))
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#reference and value
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text_size = self.GetTextSize() # IPC nominal
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ypos = ssy + text_size
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self.draw.Value(0, ypos, text_size)
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self.draw.Reference(0, -ypos, text_size)
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# set SMD attribute
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self.module.SetAttributes(pcbnew.MOD_CMS)
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BGAWizard().register()
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