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Adding fillet option for the QFN Wizard 

Fixes lp:1775961

https://bugs.launchpad.net/kicad/+bug/1775961
This commit is contained in:
nats 2018-10-19 15:15:16 +02:00 committed by Wayne Stambaugh
parent 023a445e9f
commit 6e77176d76
1 changed files with 12 additions and 6 deletions
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18
pcbnew/python/plugins/qfn_wizard.py
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@ -37,6 +37,7 @@ class QFNWizard(FootprintWizardBase.FootprintWizard):
self.AddParam("Pads", "pitch", self.uMM, 0.5, designator='e') self.AddParam("Pads", "pitch", self.uMM, 0.5, designator='e')
self.AddParam("Pads", "width", self.uMM, 0.25, designator='X1') self.AddParam("Pads", "width", self.uMM, 0.25, designator='X1')
self.AddParam("Pads", "length", self.uMM, 1.5, designator='Y1') self.AddParam("Pads", "length", self.uMM, 1.5, designator='Y1')
self.AddParam("Pads", "fillet", self.uMM, 0.3)
self.AddParam("Pads", "oval", self.uBool, True) self.AddParam("Pads", "oval", self.uBool, True)
self.AddParam("EPad", "epad", self.uBool, True) self.AddParam("EPad", "epad", self.uBool, True)
@ -81,6 +82,8 @@ class QFNWizard(FootprintWizardBase.FootprintWizard):
pad_pitch = self.pads["pitch"] pad_pitch = self.pads["pitch"]
pad_length = self.pads["length"] pad_length = self.pads["length"]
# Fillet allows to define how much of the pad is outside of the package
pad_fillet = self.pads["fillet"]
pad_width = self.pads["width"] pad_width = self.pads["width"]
v_pitch = self.package["height"] v_pitch = self.package["height"]
@ -92,31 +95,34 @@ class QFNWizard(FootprintWizardBase.FootprintWizard):
pad_shape = pcbnew.PAD_SHAPE_OVAL if self.pads["oval"] else pcbnew.PAD_SHAPE_RECT pad_shape = pcbnew.PAD_SHAPE_OVAL if self.pads["oval"] else pcbnew.PAD_SHAPE_RECT
h_pad = PA.PadMaker(self.module).SMDPad( pad_length, pad_width, h_pad = PA.PadMaker(self.module).SMDPad( pad_length + pad_fillet, pad_width,
shape=pad_shape, rot_degree=90.0) shape=pad_shape, rot_degree=90.0)
v_pad = PA.PadMaker(self.module).SMDPad( pad_length, pad_width, shape=pad_shape) v_pad = PA.PadMaker(self.module).SMDPad( pad_length + pad_fillet, pad_width, shape=pad_shape)
h_pitch = h_pitch / 2 - pad_length + (pad_length+pad_fillet)/2
v_pitch = v_pitch / 2 - pad_length + (pad_length+pad_fillet)/2
#left row #left row
pin1Pos = pcbnew.wxPoint(-h_pitch / 2, 0) pin1Pos = pcbnew.wxPoint(-h_pitch, 0)
array = PA.PadLineArray(h_pad, pads_per_row, pad_pitch, True, pin1Pos) array = PA.PadLineArray(h_pad, pads_per_row, pad_pitch, True, pin1Pos)
array.SetFirstPadInArray(1) array.SetFirstPadInArray(1)
array.AddPadsToModule(self.draw) array.AddPadsToModule(self.draw)
#bottom row #bottom row
pin1Pos = pcbnew.wxPoint(0, v_pitch / 2) pin1Pos = pcbnew.wxPoint(0, v_pitch)
array = PA.PadLineArray(v_pad, pads_per_row, pad_pitch, False, pin1Pos) array = PA.PadLineArray(v_pad, pads_per_row, pad_pitch, False, pin1Pos)
array.SetFirstPadInArray(pads_per_row + 1) array.SetFirstPadInArray(pads_per_row + 1)
array.AddPadsToModule(self.draw) array.AddPadsToModule(self.draw)
#right row #right row
pin1Pos = pcbnew.wxPoint(h_pitch / 2, 0) pin1Pos = pcbnew.wxPoint(h_pitch, 0)
array = PA.PadLineArray(h_pad, pads_per_row, -pad_pitch, True, array = PA.PadLineArray(h_pad, pads_per_row, -pad_pitch, True,
pin1Pos) pin1Pos)
array.SetFirstPadInArray(2*pads_per_row + 1) array.SetFirstPadInArray(2*pads_per_row + 1)
array.AddPadsToModule(self.draw) array.AddPadsToModule(self.draw)
#top row #top row
pin1Pos = pcbnew.wxPoint(0, -v_pitch / 2) pin1Pos = pcbnew.wxPoint(0, -v_pitch)
array = PA.PadLineArray(v_pad, pads_per_row, -pad_pitch, False, array = PA.PadLineArray(v_pad, pads_per_row, -pad_pitch, False,
pin1Pos) pin1Pos)
array.SetFirstPadInArray(3*pads_per_row + 1) array.SetFirstPadInArray(3*pads_per_row + 1)