def generate(self, **kwargs):
"""Generate data using previously loaded name and parameters. Returns a list."""
data = []
params = self.params
package = Package()
body = params.l - 2*params.termlen
package.description = "SOP-%d, %.02fmm pitch, %.2f mm body" % (
params.pincount, params.pitch, body)
l = params.l # Package lead span
# Positions and sizes of things relative to data center
padtoe = l / 2 + params.JT
padheel = l / 2 - params.footlen - params.JH
padlen = padtoe - padheel
padcenter = padtoe - padlen / 2.0
padwidth = params.termwidth + params.JS
pins_per_side = params.pincount // 2
first_pad_x = - (pins_per_side - 1) * params.pitch / 2.0
packagew = ((pins_per_side - 1) * params.pitch + 1.0) / 2.0 # About right, for small chips
packageh = l / 2 - params.termlen
courtyardw = packagew + params.courtyard_excess
courtyardh = padtoe + params.courtyard_excess
outlinew = packagew + params.silkwidth/2.0
outlineh = packageh + params.silkwidth/2.0
# Draw courtyard on package layer
rect = Rectangle( (-courtyardw, -courtyardh), (courtyardw, courtyardh))
rect.layer = "package"
data.append(rect)
# Draw package size on package layer
rect = Rectangle( (-packagew, -packageh), (packagew, packageh))
rect.layer = "package"
data.append(rect)
# Draw outline on silkscreen
rect = Rectangle( (-outlinew, -outlineh), (outlinew, outlineh))
rect.width = params.silkwidth
data.append(rect)
marksize = 0.75
rect = Rectangle( (-outlinew, -marksize), (-outlinew + marksize, marksize))
rect.width = params.silkwidth
data.append(rect)
# Draw orientation marker by pin 1 on silkscreen
markx = first_pad_x - padwidth / 2.0 - params.silkwidth * 2
line = Line( (markx, padcenter - params.silkwidth*2), (markx, padcenter))
line.width = params.silkwidth
data.append(line)
# Add pads, starting with pin 1 in lower-left (negative X, positive Y) corner
# Pads are drawn on the bottom side and rotated into place
pinno = 1
for side in range(0, 2):
th = side * 180 # Coordinate system rotation for this side
# Pad center coordinates
x = first_pad_x
y = padcenter
for pin in range(0, pins_per_side):
pad = Pad(pinno)
pad.x = x
pad.y = y
pad.ysize = padlen
pad.xsize = padwidth
pad.rotate(th)
data.append(pad)
pinno += 1
x += params.pitch
# All done!
package.data = data
package.courtyard = ((-courtyardw, -courtyardh), (courtyardw, courtyardh))
return package
def generate(self, **kwargs):
"""Generate data using previously loaded name and parameters. Returns a list."""
data = []
params = self.params
package = Package()
package.description = "QFP-%d, %.02fmm pitch" % (
params.pincount, params.pitch)
l = params.l1 # Package length along this dimension (FIXME: non-square packages)
# Positions of things relative to data center
padtoe = l / 2 + params.JT
padheel = l / 2 - params.footlen - params.JH
padlen = padtoe - padheel
padcenter = padtoe - padlen / 2.0
padwidth = params.termwidth + params.JS
pins_per_side = params.pincount // 4
first_pad_y = (pins_per_side - 1) * params.pitch / 2.0
courtyardsize = padtoe + params.courtyard_excess
outlinesize = l / 2 - params.termlen + params.silkwidth/2.0
# Draw courtyard on package layer
rect = Rectangle( (-courtyardsize, -courtyardsize), (courtyardsize, courtyardsize))
rect.layer = "package"
data.append(rect)
# Draw package size on package layer
for side in range(0, 4):
chamfer = 0.5
packagesize = l / 2 - params.termlen
th = (270 + side * 90) % 360 # Coordinate system rotation for this side
line = Line( (-packagesize + chamfer, packagesize), (packagesize - chamfer, packagesize) )
line.layer = "package"
line.rotate(th)
data.append(line)
line = Line( (packagesize - chamfer, packagesize), (packagesize, packagesize - chamfer) )
line.layer = "package"
line.rotate(th)
data.append(line)
leadblockw = pins_per_side * params.pitch / 2.0
leadblockh = l / 2
rect = Rectangle( (-leadblockw, leadblockh), (leadblockw, leadblockh - params.footlen), 0)
rect.layer = "package"
rect.rotate(th)
data.append(rect)
rect = Rectangle( (-leadblockw, leadblockh - params.footlen), (leadblockw, packagesize), 0)
rect.layer = "package"
rect.rotate(th)
data.append(rect)
# Draw outline on silkscreen
linelen = outlinesize - first_pad_y - padwidth / 2 - params.silkwidth * 1.5
for side in range(0, 4):
th = (270 + side * 90) % 360 # Coordinate system rotation for this side
line = Line( (-outlinesize, outlinesize), (-outlinesize + linelen, outlinesize) )
line.width = params.silkwidth
line.rotate(th)
data.append(line)
line = Line( (-outlinesize, outlinesize), (-outlinesize, outlinesize - linelen) )
line.width = params.silkwidth
line.rotate(th)
data.append(line)
# Draw orientation mark on silkscreen
marklen = 1.0
line = Line( (-outlinesize, outlinesize), (-outlinesize - marklen, outlinesize + marklen) )
line.width = params.silkwidth
data.append(line)
# Add pads, starting with pin 1 in lower-left (negative X, positive Y) corner
# Pads are drawn on the 0-degree (right) side and rotated into place
pinno = 1
for side in range(0, 4):
th = (270 + side * 90) % 360 # Coordinate system rotation for this side
# Pad center coordinates
x = padcenter
y = first_pad_y
for pin in range(0, pins_per_side):
pad = Pad(pinno)
pad.x = x
pad.y = y
pad.ysize = padwidth
pad.xsize = padlen
pad.rotate(th)
data.append(pad)
pinno += 1
y -= params.pitch
# All done!
package.data = data
package.courtyard = ((-courtyardsize, -courtyardsize), (courtyardsize, courtyardsize))
return package