import pcbnew def abs(x): if x < 0: return -x return x class QFPWizard(pcbnew.FootprintWizardPlugin): def __init__(self): pcbnew.FootprintWizardPlugin.__init__(self) self.name = "QFP" self.description = "QFP Footprint Wizard" self.parameters = { "Pads": { "*n": 100, "pitch": pcbnew.FromMM(0.5), "width": pcbnew.FromMM(0.25), "length": pcbnew.FromMM(1.5), "horizontal pitch": pcbnew.FromMM(15), "vertical pitch": pcbnew.FromMM(15), "*oval": "True" }, "Package": { "width": pcbnew.FromMM(14), "height": pcbnew.FromMM(14) } } self.ClearErrors() def smd_rect_pad(self, module, size, pos, name): pad = pcbnew.D_PAD(module) pad.SetSize(size) if self.parameters['Pads'].get('*oval', "true").lower() == "true": pad.SetShape(pcbnew.PAD_OVAL) else: pad.SetShape(pcbnew.PAD_RECT) pad.SetAttribute(pcbnew.PAD_SMD) pad.SetLayerMask(pcbnew.PAD_SMD_DEFAULT_LAYERS) pad.SetPos0(pos) pad.SetPosition(pos) pad.SetPadName(name) return pad def CheckParameters(self): errors = "" pads = self.parameters num_pads = pads["Pads"]["*n"] if (num_pads < 1): self.parameter_errors["Pads"]["*n"] = "Must be positive" errors +="Pads/n has wrong value, " pads["Pads"]["*n"] = int(num_pads) # Reset to int instead of float return errors def BuildFootprint(self): if self.has_errors(): print "Cannot build footprint: Parameters have errors:" print self.parameter_errors return print "Building new QFP footprint with the following parameters:" self.print_parameter_table() self.module = pcbnew.MODULE(None) # create a new module pads = self.parameters num_pads = int(pads["Pads"]["*n"]) pad_width = pads["Pads"]["width"] pad_length = pads["Pads"]["length"] pad_pitch = pads["Pads"]["pitch"] pad_horizontal_pitch = pads["Pads"]["horizontal pitch"] pad_vertical_pitch = pads["Pads"]["vertical pitch"] package_width = pads["Package"]["width"] package_height = pads["Package"]["height"] side_length = pad_pitch * ((num_pads / 4) - 1) offsetX = pad_pitch * ((num_pads / 4) - 1) / 2 text_size = pcbnew.wxSize(pcbnew.FromMM(0.8), pcbnew.FromMM(0.8)) self.module.SetReference("QFP %d" % int(num_pads)) self.module.Reference().SetPos0(pcbnew.wxPoint(0, pcbnew.FromMM(-0.8))) self.module.Reference().SetTextPosition(self.module.Reference().GetPos0()) self.module.Reference().SetSize(text_size) self.module.SetValue("U**") self.module.Value().SetPos0(pcbnew.wxPoint(0, pcbnew.FromMM(+0.8))) self.module.Value().SetTextPosition(self.module.Value().GetPos0()) self.module.Value().SetSize(text_size) self.module.SetLibRef("QFP-%d" % int(num_pads)) pad_size_left_right = pcbnew.wxSize(pad_length, pad_width) pad_size_bottom_top = pcbnew.wxSize(pad_width, pad_length) for cur_pad in range(0, num_pads): side = int(cur_pad / (num_pads / 4)) # 0 -> left, 1 -> bottom, 2 -> right, 3 -> top if side == 0 or side == 2: pad_size = pad_size_left_right pad_pos_x = -(pad_horizontal_pitch / 2) if side == 2: pad_pos_x = -pad_pos_x pad_pos_y = (cur_pad % (num_pads / 4)) * pad_pitch - (side_length / 2) else: pad_size = pad_size_bottom_top pad_pos_x = (cur_pad % (num_pads / 4)) * pad_pitch - (side_length / 2) pad_pos_y = -(pad_vertical_pitch / 2) if side == 1: pad_pos_y = -pad_pos_y pad_pos = pcbnew.wxPoint(pad_pos_x, pad_pos_y) pad = self.smd_rect_pad(self.module, pad_size, pad_pos, str(cur_pad + 1)) self.module.Add(pad) half_package_width = package_width / 2 half_package_height = package_height / 2 package_pad_height_offset = abs(package_height - side_length) / 2 - pad_pitch package_pad_width_offset = abs(package_width - side_length) / 2 - pad_pitch # Bottom Left Edge, vertical line outline = pcbnew.EDGE_MODULE(self.module) outline.SetWidth(pcbnew.FromMM(0.2)) outline.SetLayer(pcbnew.SILKSCREEN_N_FRONT) outline.SetShape(pcbnew.S_SEGMENT) start = pcbnew.wxPoint(-half_package_width, half_package_height - package_pad_height_offset) end = pcbnew.wxPoint(-half_package_width, half_package_height) outline.SetStartEnd(start, end) self.module.Add(outline) # Bottom Left Edge, horizontal line outline = pcbnew.EDGE_MODULE(self.module) outline.SetWidth(pcbnew.FromMM(0.2)) outline.SetLayer(pcbnew.SILKSCREEN_N_FRONT) outline.SetShape(pcbnew.S_SEGMENT) start = pcbnew.wxPoint(-half_package_width, half_package_height) end = pcbnew.wxPoint(-half_package_width + package_pad_width_offset, half_package_height) outline.SetStartEnd(start, end) self.module.Add(outline) # Bottom Right Edge, vertical line outline = pcbnew.EDGE_MODULE(self.module) outline.SetWidth(pcbnew.FromMM(0.2)) outline.SetLayer(pcbnew.SILKSCREEN_N_FRONT) outline.SetShape(pcbnew.S_SEGMENT) start = pcbnew.wxPoint(half_package_width, half_package_height - package_pad_height_offset) end = pcbnew.wxPoint(half_package_width, half_package_height) outline.SetStartEnd(start, end) self.module.Add(outline) # Bottom Right Edge, horizontal line outline = pcbnew.EDGE_MODULE(self.module) outline.SetWidth(pcbnew.FromMM(0.2)) outline.SetLayer(pcbnew.SILKSCREEN_N_FRONT) outline.SetShape(pcbnew.S_SEGMENT) start = pcbnew.wxPoint(half_package_width, half_package_height) end = pcbnew.wxPoint(half_package_width - package_pad_width_offset, half_package_height) outline.SetStartEnd(start, end) self.module.Add(outline) # Top Right Edge, vertical line outline = pcbnew.EDGE_MODULE(self.module) outline.SetWidth(pcbnew.FromMM(0.2)) outline.SetLayer(pcbnew.SILKSCREEN_N_FRONT) outline.SetShape(pcbnew.S_SEGMENT) start = pcbnew.wxPoint(half_package_width, -half_package_height + package_pad_height_offset) end = pcbnew.wxPoint(half_package_width, -half_package_height) outline.SetStartEnd(start, end) self.module.Add(outline) # Top Right Edge, horizontal line outline = pcbnew.EDGE_MODULE(self.module) outline.SetWidth(pcbnew.FromMM(0.2)) outline.SetLayer(pcbnew.SILKSCREEN_N_FRONT) outline.SetShape(pcbnew.S_SEGMENT) start = pcbnew.wxPoint(half_package_width, -half_package_height) end = pcbnew.wxPoint(half_package_width - package_pad_width_offset, -half_package_height) outline.SetStartEnd(start, end) self.module.Add(outline) # Top Left Edge, straight line outline = pcbnew.EDGE_MODULE(self.module) outline.SetWidth(pcbnew.FromMM(0.2)) outline.SetLayer(pcbnew.SILKSCREEN_N_FRONT) outline.SetShape(pcbnew.S_SEGMENT) start = pcbnew.wxPoint(-half_package_width, -half_package_height + package_pad_height_offset) end = pcbnew.wxPoint(-half_package_width + package_pad_width_offset, -half_package_height) outline.SetStartEnd(start, end) self.module.Add(outline) def print_parameter_table(self): for name, section in self.parameters.iteritems(): print " %s:" % name for key, value in section.iteritems(): unit = "" if (type(value) is int or type(value) is float) and not "*" in key: unit = "mm" if "*" in key: key = key[1:] else: value = pcbnew.ToMM(value) print " %s: %s%s" % (key, value, unit) def has_errors(self): for name, section in self.parameter_errors.iteritems(): for k, v in section.iteritems(): if v: return True return False QFPWizard().register()