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make QFP rectangle #8

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make QFP rectangle #8

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56 changes: 32 additions & 24 deletions qfp_wizard.py
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301, USA.
#
# 2020-04-27 v1.01 bigrom26 make QFP rectangle

from __future__ import division
import pcbnew
Expand All @@ -29,7 +30,8 @@ def GetDescription(self):
return "Quad Flat Package (QFP) footprint wizard"

def GenerateParameterList(self):
self.AddParam("Pads", "n", self.uInteger, 100, multiple=4, min_value=4)
self.AddParam("Pads", "nx", self.uInteger, 10, multiple=2, min_value=2)
self.AddParam("Pads", "ny", self.uInteger, 10, multiple=2, min_value=2)
self.AddParam("Pads", "pitch", self.uMM, 0.5, designator='e')
self.AddParam("Pads", "width", self.uMM, 0.25, designator='X1')
self.AddParam("Pads", "length", self.uMM, 1.5, designator='Y1')
Expand All @@ -54,8 +56,9 @@ def CheckParameters(self):
pass

def GetValue(self):
return "QFP-{n}_{x:g}x{y:g}_Pitch{p:g}mm".format(
n = self.pads['n'],
return "QFP-{nx:g}x{ny:g}_{x:g}x{y:g}_Pitch{p:g}mm".format(
nx = self.pads['nx'],
ny = self.pads['ny'],
x = pcbnew.ToMM(self.package['width']),
y = pcbnew.ToMM(self.package['height']),
p = pcbnew.ToMM(self.pads['pitch'])
Expand All @@ -70,9 +73,11 @@ def BuildThisFootprint(self):
v_pitch = self.pads["vertical spacing"]
h_pitch = self.pads["horizontal spacing"]

pads_per_row = int(self.pads["n"] // 4)
pads_per_col = int(self.pads["nx"])
pads_per_row = int(self.pads["ny"])

row_len = (pads_per_row - 1) * pad_pitch
col_len = (pads_per_col - 1) * pad_pitch

pad_shape = pcbnew.PAD_SHAPE_OVAL if self.pads["oval"] else pcbnew.PAD_SHAPE_RECT

Expand All @@ -88,32 +93,34 @@ def BuildThisFootprint(self):

#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 = PA.PadLineArray(v_pad, pads_per_col, pad_pitch, False, pin1Pos)
array.SetFirstPadInArray( pads_per_row + 1)
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Need to stay consistent in spacing

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.SetFirstPadInArray( pads_per_row + pads_per_col + 1)
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Extra space at start

array.AddPadsToModule(self.draw)

#top row
pin1Pos = pcbnew.wxPoint(0, -v_pitch / 2)
array = PA.PadLineArray(v_pad, pads_per_row, -pad_pitch, False,
array = PA.PadLineArray(v_pad, pads_per_col, -pad_pitch, False,
pin1Pos)
array.SetFirstPadInArray(3*pads_per_row + 1)
array.SetFirstPadInArray( 2*pads_per_row + pads_per_col + 1)
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Extra space at start and missing spaces around '*'.

array.AddPadsToModule(self.draw)

offset = pcbnew.FromMM(0.15)

x = self.parameters["Package"]["width"] / 2 + offset
y = self.parameters["Package"]["height"] / 2 + offset
inner = (row_len / 2) + pad_pitch
innerY = (row_len / 2) + pad_pitch
innerX = (col_len / 2) + pad_pitch

# Add outline to F_Fab layer
self.draw.SetLayer(pcbnew.F_Fab)
thick = self.draw.GetLineThickness()

bevel = min( pcbnew.FromMM(1.0), self.package['width']/2, self.package['height']/2 )

Expand All @@ -127,32 +134,33 @@ def BuildThisFootprint(self):
bottom_edge = (v_pitch + pad_length) / 2
top_edge = -bottom_edge

self.draw.SetLineThickness( pcbnew.FromMM( 0.1 ) ) #Default per KLC F5.2 as of 12/2018
self.draw.BoxWithDiagonalAtCorner(0, 0, w, h, bevel)

# Draw silkscreen
self.draw.SetLayer(pcbnew.F_SilkS)
self.draw.SetLayer( pcbnew.F_SilkS )
self.draw.SetLineThickness( pcbnew.FromMM( 0.12 ) ) #Default per KLC F5.1 as of 12/2018

#top left - as per IPC-7351C
self.draw.Polyline([(-inner, -y), (-x, -y), (-x, -inner), (left_edge, -inner)])
self.draw.Polyline([(-innerX, -y), (-x, -y), (-x, -innerY), (left_edge, -innerY)])
# top right
self.draw.Polyline([(inner, -y), (x, -y), (x, -inner)])
self.draw.Polyline([(innerX, -y), (x, -y), (x, -innerY)])
# bottom left
self.draw.Polyline([(-inner, y), (-x, y), (-x, inner)])
self.draw.Polyline([(-innerX, y), (-x, y), (-x, innerY)])
# bottom right
self.draw.Polyline([(inner, y), (x, y), (x, inner)])
self.draw.Polyline([(innerX, y), (x, y), (x, innerY)])

# Courtyard
cmargin = self.parameters["Package"]["courtyard margin"]
self.draw.SetLayer(pcbnew.F_CrtYd)
sizex = (right_edge + cmargin) * 2
sizey = (bottom_edge + cmargin) * 2
self.draw.SetLayer( pcbnew.F_CrtYd )
sizex = ( right_edge + cmargin ) * 2
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Don't add extra spaces here unless you are going to be consistent with them through the file.

sizey = ( bottom_edge + cmargin ) * 2
# round size to nearest 0.1mm, rectangle will thus land on a 0.05mm grid
sizex = pcbnew.PutOnGridMM(sizex, 0.1)
sizey = pcbnew.PutOnGridMM(sizey, 0.1)
# set courtyard line thickness to the one defined in KLC
thick = self.draw.GetLineThickness()
self.draw.SetLineThickness(pcbnew.FromMM(0.05))
self.draw.Box(0, 0, sizex, sizey)
sizex = pcbnew.PutOnGridMM( sizex, 0.1 )
sizey = pcbnew.PutOnGridMM( sizey, 0.1 )

self.draw.SetLineThickness( pcbnew.FromMM( 0.05 ) ) #Default per KLC F5.3 as of 12/2018
self.draw.Box( 0, 0, sizex, sizey )
# restore line thickness to previous value
self.draw.SetLineThickness(pcbnew.FromMM(thick))

Expand Down