kicad/pcbnew/scripting/plugins/touch_slider_wizard.py

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#!/usr/bin/python
from pcbnew import *
class TouchSliderWizard(FootprintWizardPlugin):
def __init__(self):
FootprintWizardPlugin.__init__(self)
self.name = "Touch Slider"
self.description = "Capacitive Touch Slider Wizard"
self.parameters = {
"Pads":
{"*steps":4, # not internal (measurement) units preceded by "*"
"*bands":2,
"width": FromMM(10),
"length": FromMM(50),
"clearance": FromMM(1)
}
}
self.ClearErrors()
# build a rectangular pad
def smdRectPad(self,module,size,pos,name):
pad = D_PAD(module)
pad.SetSize(size)
pad.SetShape(PAD_RECT)
pad.SetAttribute(PAD_SMD)
pad.SetLayerMask(PAD_SMD_DEFAULT_LAYERS)
pad.SetPos0(pos)
pad.SetPosition(pos)
pad.SetPadName(name)
return pad
def smdTrianglePad(self,module,size,pos,name,up_down=1,left_right=0):
pad = D_PAD(module)
pad.SetSize(wxSize(size[0],size[1]))
pad.SetShape(PAD_TRAPEZOID)
pad.SetAttribute(PAD_CONN)
pad.SetLayerMask(PAD_CONN_DEFAULT_LAYERS)
pad.SetPos0(pos)
pad.SetPosition(pos)
pad.SetPadName(name)
pad.SetDelta(wxSize(left_right*size[1],up_down*size[0]))
return pad
# This method checks the parameters provided to wizard and set errors
def CheckParameters(self):
p = self.parameters
steps = p["Pads"]["*steps"]
errors = ""
if (steps<1):
self.parameter_errors["Pads"]["*steps"]="Must be positive"
errors +="Pads/*steps has wrong value"
p["Pads"]["*steps"] = int(pads) # make sure it stays as int (default is float)
bands = p["Pads"]["*bands"]
if (bands<1):
self.parameter_errors["Pads"]["*bands"]="Must be positive"
errors +="Pads/*bands has wrong value"
p["Pads"]["*bands"] = int(bands) # make sure it stays as int (default is float)
touch_width = p["Pads"]["width"]
touch_length = p["Pads"]["length"]
touch_clearance = p["Pads"]["clearance"]
return errors
# The start pad is made of a rectangular pad plus a couple of
# triangular pads facing tips on the middle/right of the first
# rectangular pad
def AddStartPad(self,position,touch_width,step_length,clearance,name):
module = self.module
step_length = step_length - clearance
size_pad = wxSize(step_length/2.0+(step_length/3),touch_width)
pad = self.smdRectPad(module,size_pad,position-wxPoint(step_length/6,0),name)
module.Add(pad)
size_pad = wxSize(step_length/2.0,touch_width)
tp = self.smdTrianglePad(module,wxSize(size_pad[0],size_pad[1]/2),
position+wxPoint(size_pad[0]/2,size_pad[1]/4),
name)
module.Add(tp)
tp = self.smdTrianglePad(module,wxSize(size_pad[0],size_pad[1]/2),
position+wxPoint(size_pad[0]/2,-size_pad[1]/4),
name
,-1)
module.Add(tp)
# compound a "start pad" shape plus a triangle on the left, pointing to
# the previous touch-pad
def AddMiddlePad(self,position,touch_width,step_length,clearance,name):
module = self.module
step_length = step_length - clearance
size_pad = wxSize(step_length/2.0,touch_width)
size_pad = wxSize(step_length/2.0,touch_width)
pad = self.smdRectPad(module,size_pad,position,name)
module.Add(pad)
tp = self.smdTrianglePad(module,wxSize(size_pad[0],size_pad[1]/2),
position+wxPoint(size_pad[0]/2,size_pad[1]/4),
name)
module.Add(tp)
tp = self.smdTrianglePad(module,wxSize(size_pad[0],size_pad[1]/2),
position+wxPoint(size_pad[0]/2,-size_pad[1]/4),
name
,-1)
module.Add(tp)
tp = self.smdTrianglePad(module,wxSize(size_pad[0],size_pad[1]/2),
position+wxPoint(-size_pad[0],0),
name,
0,
-1)
module.Add(tp)
def AddFinalPad(self,position,touch_width,step_length,clearance,name):
module = self.module
step_length = step_length - clearance
size_pad = wxSize(step_length/2.0,touch_width)
pad = self.smdRectPad(module,
wxSize(size_pad[0]+(step_length/3),size_pad[1]),
position+wxPoint(step_length/6,0),
name)
module.Add(pad)
tp = self.smdTrianglePad(module,wxSize(size_pad[0],size_pad[1]/2),
position+wxPoint(-size_pad[0],0),
name,
0,
-1)
module.Add(tp)
def AddStrip(self,pos,steps,touch_width,step_length,touch_clearance):
self.AddStartPad(pos,touch_width,step_length,touch_clearance,"1")
for n in range(2,steps):
pos = pos + wxPoint(step_length,0)
self.AddMiddlePad(pos,touch_width,step_length,touch_clearance,str(n))
pos = pos + wxPoint(step_length,0)
self.AddFinalPad(pos,touch_width,step_length,touch_clearance,str(steps))
# build the footprint from parameters
def BuildFootprint(self):
module = MODULE(None) # create a new module
self.module = module
p = self.parameters
steps = int(p["Pads"]["*steps"])
bands = int(p["Pads"]["*bands"])
touch_width = p["Pads"]["width"]
touch_length = p["Pads"]["length"]
touch_clearance = p["Pads"]["clearance"]
step_length = float(touch_length) / float(steps)
module.SetReference("TS"+str(steps)) # give it a reference name
module.m_Reference.SetPos0(wxPointMM(-1,-2))
module.m_Reference.SetPosition(wxPointMM(-1,-2))
# starting pad
pos = wxPointMM(0,0)
band_width = touch_width/bands
for b in range(bands):
self.AddStrip(pos,steps,band_width,step_length,touch_clearance)
pos+=wxPoint(0,band_width)
module.SetLibRef("S"+str(steps))
# create our footprint wizard
touch_slider_wizard = TouchSliderWizard()
# register it into pcbnew
touch_slider_wizard.register()