Coverage for /media/ldata/code/tendril/tendril/conventions/motifs/DLPF1.py : 0%

Hot-keys on this page
r m x p toggle line displays
j k next/prev highlighted chunk
0 (zero) top of page
1 (one) first highlighted chunk
# Copyright (C) 2015 Chintalagiri Shashank # # This file is part of Tendril. # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU Affero General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU Affero General Public License for more details. # # You should have received a copy of the GNU Affero General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. """ This file is part of tendril See the COPYING, README, and INSTALL files for more information
This file needs to be refactored quite a bit """
from math import pi
import iec60063
from tendril.conventions import electronics from tendril.conventions.motifs.motifbase import MotifBase from tendril.gedaif import gsymlib
from tendril.utils import log logger = log.get_logger(__name__, log.DEFAULT)
class MotifDLPF1(MotifBase): def __init__(self, identifier): super(MotifDLPF1, self).__init__(identifier) self._configdict = None
def configure(self, configdict): # Set Resistances self.get_elem_by_idx('R1').data['value'] = electronics.construct_resistor(configdict['R1'], '0.125W') # noqa self.get_elem_by_idx('R2').data['value'] = electronics.construct_resistor(configdict['R1'], '0.125W') # noqa # Set Frequency self._configdict = configdict self.Fdiff = float(configdict['Fdiff'][:-2]) self._set_biases() self.validate()
def _set_biases(self): if 'pbias' not in self._configdict.keys(): log.WARNING('Positive terminal bias not defined : ' + self.refdes) else: if self._configdict['pbias'] != '-1': self.get_elem_by_idx('R3').data['value'] = electronics.construct_resistor(self._configdict['pbias'], '0.125W') # noqa else: try: self.get_elem_by_idx('R3').data['fillstatus'] = 'DNP' except KeyError: pass
if 'pbias' not in self._configdict.keys(): log.WARNING('Positive terminal bias not defined : ' + self.refdes) else: if self._configdict['nbias'] != '-1': self.get_elem_by_idx('R4').data['value'] = electronics.construct_resistor(self._configdict['nbias'], '0.125W') # noqa else: try: self.get_elem_by_idx('R4').data['fillstatus'] = 'DNP' except KeyError: pass
@property def Fdiff(self): return (10 ** 9) / (2 * pi * float(self.R1) * float(2 * self.C1 + self.C2)) # noqa
@property def Fcm(self): return (10 ** 9) / (2 * pi * float(self.R1) * float(self.C2))
@Fdiff.setter def Fdiff(self, value): c1_dev = self.get_elem_by_idx('C1').data['device'] c1_fp = self.get_elem_by_idx('C1').data['footprint'] if c1_fp[0:3] == "MY-": c1_fp = c1_fp[3:]
allowed_cap_vals = iec60063.gen_vals(self._configdict['Cseries'], iec60063.cap_ostrs, self._configdict['Cmin'], self._configdict['Cmax'])
fcm_est = value * 21 required_cap_val = (10 ** 9) / (2 * pi * float(self.R1) * fcm_est)
cval = None lastval = None for val in allowed_cap_vals: lastval = cval cval = electronics.parse_capacitance(val) if cval >= required_cap_val: self.get_elem_by_idx('C2').data['value'] = gsymlib.find_capacitor(lastval, c1_fp, c1_dev).value # noqa self.get_elem_by_idx('C3').data['value'] = gsymlib.find_capacitor(lastval, c1_fp, c1_dev).value # noqa break
if cval is None: raise ValueError
required_cap_val = lastval * 10 for val in allowed_cap_vals: cval = electronics.parse_capacitance(val) if cval >= required_cap_val: self.get_elem_by_idx('C1').data['value'] = gsymlib.find_capacitor(cval, c1_fp, c1_dev).value # noqa break
@property def R1(self): elem = self.get_elem_by_idx('R1') assert elem.data['device'] in ['RES SMD', 'RES THRU'] return electronics.parse_resistance(electronics.parse_resistor(elem.data['value'])[0]) # noqa
@property def R2(self): elem = self.get_elem_by_idx('R2') assert elem.data['device'] in ['RES SMD', 'RES THRU'] return electronics.parse_resistance(electronics.parse_resistor(elem.data['value'])[0]) # noqa
@property def C1(self): elem = self.get_elem_by_idx('C1') assert elem.data['device'] in ['CAP CER SMD', 'CAP CER THRU'] return electronics.parse_capacitance(electronics.parse_capacitor(elem.data['value'])[0]) # noqa
@property def C2(self): elem = self.get_elem_by_idx('C2') assert elem.data['device'] in ['CAP CER SMD', 'CAP CER THRU'] return electronics.parse_capacitance(electronics.parse_capacitor(elem.data['value'])[0]) # noqa
@property def C3(self): elem = self.get_elem_by_idx('C3') assert elem.data['device'] in ['CAP CER SMD', 'CAP CER THRU'] return electronics.parse_capacitance(electronics.parse_capacitor(elem.data['value'])[0]) # noqa
def validate(self): logger.debug("Validating Motif : " + self.refdes) logger.debug('R1 : ' + str(self.R1)) logger.debug('R2 : ' + str(self.R2)) logger.debug('C1 : ' + str(self.C1)) logger.debug('C2 : ' + str(self.C2)) logger.debug('C3 : ' + str(self.C3)) logger.debug('Fdiff : ' + str(self.Fdiff)) logger.debug('Fcm : ' + str(self.Fcm)) assert self.R1 == self.R2 assert self.C3 == self.C2 assert self.C1 >= 10 * self.C2
def get_configdict_stub(self): stub = {'desc': "Differential Low Pass RFI and AAF filter", 'Fdiff': "15000Hz", 'R1': "50E", 'Cseries': "E6", 'Cmin': "1pF", 'Cmax': "1uF", 'pbias': '-1', 'nbias': '-1'} return stub |