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# 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 """
from math import fabs
from tendril.utils import log logger = log.get_logger(__name__, log.DEFAULT)
import iec60063
from tendril.conventions.motifs.motifbase import MotifBase from tendril.conventions import electronics from tendril.gedaif import gsymlib
class MotifLREGS1(MotifBase): def __init__(self, identifier): super(MotifLREGS1, self).__init__(identifier) self._configdict = None
def get_configdict_stub(self): stub = {'desc': 'Positive LDO Output Voltage Setter', 'regulator': '', 'Vref': '1.225V', 'Imin': '1mA', 'Rseries': 'E12', 'Rmin': '10E', 'Rmax': '10M'} return stub
def configure(self, configdict): self._configdict = configdict self._autoset_r2() self.Vout = configdict['Vout'] self.validate()
def _autoset_r2(self): r2_dev = self.get_elem_by_idx('R2').data['device'] r2_fp = self.get_elem_by_idx('R2').data['footprint'] if r2_fp[0:3] == "MY-": r2_fp = r2_fp[3:]
allowed_res_vals = iec60063.gen_vals(self._configdict['Rseries'], iec60063.res_ostrs, self._configdict['Rmin'], self._configdict['Rmax'])
required_res_val = fabs(self.Vref * 1000 / self.Imin)
rval = None lastval = None for val in allowed_res_vals: lastval = rval rval = electronics.parse_resistance(val) if rval >= required_res_val: self.get_elem_by_idx('R2').data['value'] = gsymlib.find_resistor(lastval, r2_fp, r2_dev) # noqa break
def validate(self): logger.debug("Validating Motif : " + self.refdes) logger.debug(" Vout: " + str(self.Vout) + " R2:" + str(self.R2) + " R1:" + str(self.R1))
@property def Vout(self): return self.Vref * (1 + (self.R1 / self.R2))
@Vout.setter def Vout(self, value): r1_dev = self.get_elem_by_idx('R1').data['device'] r1_fp = self.get_elem_by_idx('R1').data['footprint'] if r1_fp[0:3] == "MY-": r1_fp = r1_fp[3:]
allowed_res_vals = iec60063.gen_vals(self._configdict['Rseries'], iec60063.res_ostrs, self._configdict['Rmin'], self._configdict['Rmax'])
required_res_val = ((electronics.parse_voltage(value) / self.Vref) - 1) * self.R2 # noqa
rval = None lastval = None for val in allowed_res_vals: lastval = rval rval = electronics.parse_resistance(val) if rval >= required_res_val: self.get_elem_by_idx('R1').data['value'] = gsymlib.find_resistor(lastval, r1_fp, r1_dev) # 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 Vref(self): return electronics.parse_voltage(self._configdict['Vref'])
@property def Imin(self): return electronics.parse_current(self._configdict['Imin'])
@property def Il(self): return self.Vref / self.R2
@property def listing(self): return [('Vout', self.Vout)] |