Source code for pyfda.input_widgets.input_fixpoint_specs
# -*- coding: utf-8 -*-
#
# This file is part of the pyFDA project hosted at https://github.com/chipmuenk/pyfda
#
# Copyright © pyFDA Project Contributors
# Licensed under the terms of the MIT License
# (see file LICENSE in root directory for details)
"""
Widget for simulating fixpoint filters and generating Verilog Code
"""
import sys, os, io
import re
import importlib
import time
import logging
logger = logging.getLogger(__name__)
from pyfda.libs.compat import (Qt, QWidget, QPushButton, QComboBox, QFD, QSplitter, QLabel,
QPixmap, QVBoxLayout, QHBoxLayout, pyqtSignal, QFrame,
QEvent, QSizePolicy)
import numpy as np
import pyfda.filterbroker as fb # importing filterbroker initializes all its globals
import pyfda.libs.pyfda_dirs as dirs
from pyfda.libs.pyfda_lib import qstr, cmp_version, pprint_log
import pyfda.libs.pyfda_fix_lib as fx
from pyfda.libs.pyfda_io_lib import extract_file_ext
from pyfda.libs.pyfda_qt_lib import qget_cmb_box, qset_cmb_box, qstyle_widget
from pyfda.fixpoint_widgets.fixpoint_helpers import UI_W, UI_Q
from pyfda.pyfda_rc import params
# when migen is present, instantiate the fixpoint widget
if cmp_version("migen", "0.1") >= -1: # currently, version cannot be determined
import migen
HAS_MIGEN = True
else:
HAS_MIGEN = False
# when deltasigma module is present, add a corresponding entry to the combobox
try:
import deltasigma
HAS_DS = True
except ImportError:
HAS_DS = False
#------------------------------------------------------------------------------
classes = {'Input_Fixpoint_Specs':'Fixpoint'} #: Dict containing class name : display name
[docs]class Input_Fixpoint_Specs(QWidget):
"""
Create the widget that holds the dynamically loaded fixpoint filter ui
"""
# emit a signal when the image has been resized
sig_resize = pyqtSignal()
# incoming from subwidgets -> process_sig_rx_local
sig_rx_local = pyqtSignal(object)
# incoming, connected to input_tab_widget.sig_rx
sig_rx = pyqtSignal(object)
# outcgoing
sig_tx = pyqtSignal(object)
def __init__(self, parent):
super(Input_Fixpoint_Specs, self).__init__(parent)
self.tab_label = 'Fixpoint'
self.tool_tip = ("<span>Select a fixpoint implementation for the filter,"
" simulate it or generate a Verilog netlist.</span>")
self.parent = parent
self.fx_path = os.path.realpath(os.path.join(dirs.INSTALL_DIR, 'fixpoint_widgets'))
self.no_fx_filter_img = os.path.join(self.fx_path, "no_fx_filter.png")
if not os.path.isfile(self.no_fx_filter_img):
logger.error("Image {0:s} not found!".format(self.no_fx_filter_img))
self.default_fx_img = os.path.join(self.fx_path, "default_fx_img.png")
if not os.path.isfile(self.default_fx_img):
logger.error("Image {0:s} not found!".format(self.default_fx_img))
if HAS_MIGEN:
self._construct_UI()
else:
self.state = "deactivated" # "invisible", "disabled"
#------------------------------------------------------------------------------
[docs] def process_sig_rx(self, dict_sig=None):
"""
Process signals coming in via subwidgets and sig_rx
Play PingPong with a stimulus & plot widget:
2. ``fx_sim_init()``: Request stimulus by sending 'fx_sim':'get_stimulus'
3. ``fx_sim_set_stimulus()``: Receive stimulus from widget in 'fx_sim':'send_stimulus'
and pass it to HDL object for simulation
4. Send back HDL response to widget via 'fx_sim':'set_response'
"""
logger.debug("process_sig_rx(): vis={0}\n{1}"\
.format(self.isVisible(), pprint_log(dict_sig)))
if dict_sig['sender'] == __name__:
logger.debug("Stopped infinite loop\n{0}".format(pprint_log(dict_sig)))
return
elif 'data_changed' in dict_sig and dict_sig['data_changed'] == "filter_designed":
# New filter has been designed, update list of available filter topologies here
self._update_filter_cmb()
return
elif 'data_changed' in dict_sig or\
('view_changed' in dict_sig and dict_sig['view_changed'] == 'q_coeff'):
# update fields in the filter topology widget - wordlength may have
# been changed. Also set RUN button to "changed" in wdg_dict2ui()
self.wdg_dict2ui()
#self.sig_tx.emit({'sender':__name__, 'fx_sim':'specs_changed'})
elif 'fx_sim' in dict_sig:
if dict_sig['fx_sim'] == 'init':
if self.fx_wdg_found:
self.fx_sim_init()
else:
logger.error("No fixpoint widget found!")
qstyle_widget(self.butSimHDL, "error")
self.sig_tx.emit({'sender':__name__, 'fx_sim':'error'})
elif dict_sig['fx_sim'] == 'send_stimulus':
self.fx_sim_set_stimulus(dict_sig)
elif dict_sig['fx_sim'] == 'specs_changed':
# fixpoint specification have been changed somewhere, update ui
# and set run button to "changed" in wdg_dict2ui()
self.wdg_dict2ui()
elif dict_sig['fx_sim'] == 'finish':
qstyle_widget(self.butSimHDL, "normal")
logger.info('Fixpoint simulation [{0:5.3g} ms]: Plotting finished'\
.format((time.process_time() - self.t_resp)*1000))
else:
logger.error('Unknown "fx_sim" command option "{0}"\n'
'\treceived from "{1}".'.format(dict_sig['fx_sim'],dict_sig['sender']))
# ---- Process local widget signals
elif 'ui' in dict_sig:
if 'id' in dict_sig and dict_sig['id'] == 'w_input':
"""
Input fixpoint format has been changed or butLock has been clicked.
When I/O lock is active, copy input fixpoint word format to output
word format.
"""
if dict_sig['ui'] == 'butLock' and not self.wdg_w_input.butLock.isChecked():
# butLock was deactivitated, don't do anything
return
elif self.wdg_w_input.butLock.isChecked():
# but lock was activated or wordlength setting have been changed
fb.fil[0]['fxqc']['QO']['WI'] = fb.fil[0]['fxqc']['QI']['WI']
fb.fil[0]['fxqc']['QO']['WF'] = fb.fil[0]['fxqc']['QI']['WF']
fb.fil[0]['fxqc']['QO']['W'] = fb.fil[0]['fxqc']['QI']['W']
elif 'id' in dict_sig and dict_sig['id'] == 'w_output':
"""
Output fixpoint format has been changed. When I/O lock is active, copy
output fixpoint word format to input word format.
"""
if self.wdg_w_input.butLock.isChecked():
fb.fil[0]['fxqc']['QI']['WI'] = fb.fil[0]['fxqc']['QO']['WI']
fb.fil[0]['fxqc']['QI']['WF'] = fb.fil[0]['fxqc']['QO']['WF']
fb.fil[0]['fxqc']['QI']['W'] = fb.fil[0]['fxqc']['QO']['W']
elif 'id' in dict_sig and dict_sig['id'] in \
{'w_coeff', 'q_input', 'q_output', 'w_accu', 'q_accu'}:
pass # nothing to do for now
else:
if not "id" in dict_sig:
logger.warning("No id in dict_sig:\n{0}".format(pprint_log(dict_sig)))
else:
logger.warning('Unknown id "{0}" in dict_sig:\n{1}'\
.format(dict_sig['id'], pprint_log(dict_sig)))
if not dict_sig['ui'] in {'WI', 'WF', 'ovfl', 'quant', 'cmbW', 'butLock'}:
logger.warning("Unknown value '{0}' for key 'ui'".format(dict_sig['ui']))
self.wdg_dict2ui() # update wordlengths in UI and set RUN button to 'changed'
self.sig_tx.emit({'sender':__name__, 'fx_sim':'specs_changed'})
return
#------------------------------------------------------------------------------
def _construct_UI(self):
"""
Intitialize the main GUI, consisting of:
- A combo box to select the filter topology and an image of the topology
- The input quantizer
- The UI of the fixpoint filter widget
- Simulation and export buttons
"""
#------------------------------------------------------------------------------
# Define frame and layout for the dynamically updated filter widget
# The actual filter widget is instantiated in self.set_fixp_widget() later on
self.layH_fx_wdg = QHBoxLayout()
#self.layH_fx_wdg.setContentsMargins(*params['wdg_margins'])
frmHDL_wdg = QFrame(self)
frmHDL_wdg.setLayout(self.layH_fx_wdg)
#frmHDL_wdg.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Minimum)
#------------------------------------------------------------------------------
# Initialize fixpoint filter combobox, title and description
#------------------------------------------------------------------------------
self.cmb_wdg_fixp = QComboBox(self)
self.cmb_wdg_fixp.setSizeAdjustPolicy(QComboBox.AdjustToContents)
self.lblTitle = QLabel("not set", self)
self.lblTitle.setWordWrap(True)
self.lblTitle.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed)
layHTitle = QHBoxLayout()
layHTitle.addWidget(self.cmb_wdg_fixp)
layHTitle.addWidget(self.lblTitle)
self.frmTitle = QFrame(self)
self.frmTitle.setLayout(layHTitle)
self.frmTitle.setContentsMargins(*params['wdg_margins'])
#------------------------------------------------------------------------------
# Input and Output Quantizer
#------------------------------------------------------------------------------
# - instantiate widgets for input and output quantizer
# - pass the quantization (sub-?) dictionary to the constructor
#------------------------------------------------------------------------------
self.wdg_w_input = UI_W(self, q_dict = fb.fil[0]['fxqc']['QI'],
id='w_input', label='', lock_visible=True)
self.wdg_w_input.sig_tx.connect(self.process_sig_rx)
cmb_q = ['round','floor','fix']
self.wdg_w_output = UI_W(self, q_dict = fb.fil[0]['fxqc']['QO'], id='w_output',
label='')
self.wdg_w_output.sig_tx.connect(self.process_sig_rx)
self.wdg_q_output = UI_Q(self, q_dict = fb.fil[0]['fxqc']['QO'], id='q_output',
label='Output Format <i>Q<sub>Y </sub></i>:',
cmb_q=cmb_q, cmb_ov=['wrap','sat'])
self.wdg_q_output.sig_tx.connect(self.sig_rx)
if HAS_DS:
cmb_q.append('dsm')
self.wdg_q_input = UI_Q(self, q_dict = fb.fil[0]['fxqc']['QI'], id='q_input',
label='Input Format <i>Q<sub>X </sub></i>:',
cmb_q=cmb_q)
self.wdg_q_input.sig_tx.connect(self.sig_rx)
# Layout and frame for input quantization
layVQiWdg = QVBoxLayout()
layVQiWdg.addWidget(self.wdg_q_input)
layVQiWdg.addWidget(self.wdg_w_input)
frmQiWdg = QFrame(self)
#frmBtns.setFrameStyle(QFrame.StyledPanel|QFrame.Sunken)
frmQiWdg.setLayout(layVQiWdg)
frmQiWdg.setContentsMargins(*params['wdg_margins'])
# Layout and frame for output quantization
layVQoWdg = QVBoxLayout()
layVQoWdg.addWidget(self.wdg_q_output)
layVQoWdg.addWidget(self.wdg_w_output)
frmQoWdg = QFrame(self)
#frmBtns.setFrameStyle(QFrame.StyledPanel|QFrame.Sunken)
frmQoWdg.setLayout(layVQoWdg)
frmQoWdg.setContentsMargins(*params['wdg_margins'])
#------------------------------------------------------------------------------
# Dynamically updated image of filter topology
#------------------------------------------------------------------------------
# label is a placeholder for image
self.lbl_fixp_img = QLabel("img not set", self)
#self.lbl_fixp_img.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Minimum)
self.embed_fixp_img(self.no_fx_filter_img)
layHImg = QHBoxLayout()
layHImg.setContentsMargins(0,0,0,0)
layHImg.addWidget(self.lbl_fixp_img)#, Qt.AlignCenter)
self.frmImg = QFrame(self)
self.frmImg.setLayout(layHImg)
self.frmImg.setContentsMargins(*params['wdg_margins'])
self.resize_img()
#------------------------------------------------------------------------------
# Simulation and export Buttons
#------------------------------------------------------------------------------
self.butExportHDL = QPushButton(self)
self.butExportHDL.setToolTip("Export fixpoint filter in Verilog format.")
self.butExportHDL.setText("Create HDL")
self.butSimHDL = QPushButton(self)
self.butSimHDL.setToolTip("Start migen fixpoint simulation.")
self.butSimHDL.setText("Sim. HDL")
self.butSimFxPy = QPushButton(self)
self.butSimFxPy.setToolTip("Simulate filter with fixpoint effects.")
self.butSimFxPy.setText("Sim. FixPy")
self.layHHdlBtns = QHBoxLayout()
self.layHHdlBtns.addWidget(self.butSimFxPy)
self.layHHdlBtns.addWidget(self.butSimHDL)
self.layHHdlBtns.addWidget(self.butExportHDL)
# This frame encompasses the HDL buttons sim and convert
frmHdlBtns = QFrame(self)
#frmBtns.setFrameStyle(QFrame.StyledPanel|QFrame.Sunken)
frmHdlBtns.setLayout(self.layHHdlBtns)
frmHdlBtns.setContentsMargins(*params['wdg_margins'])
# -------------------------------------------------------------------
# Top level layout
# -------------------------------------------------------------------
splitter = QSplitter(self)
splitter.setOrientation(Qt.Vertical)
splitter.addWidget(frmHDL_wdg)
splitter.addWidget(frmQoWdg)
splitter.addWidget(self.frmImg)
# setSizes uses absolute pixel values, but can be "misused" by specifying values
# that are way too large: in this case, the space is distributed according
# to the _ratio_ of the values:
splitter.setSizes([3000, 3000, 5000])
layVMain = QVBoxLayout()
layVMain.addWidget(self.frmTitle)
layVMain.addWidget(frmHdlBtns)
layVMain.addWidget(frmQiWdg)
layVMain.addWidget(splitter)
layVMain.addStretch()
layVMain.setContentsMargins(*params['wdg_margins'])
self.setLayout(layVMain)
#----------------------------------------------------------------------
# GLOBAL SIGNALS & SLOTs
#----------------------------------------------------------------------
self.sig_rx.connect(self.process_sig_rx)
#----------------------------------------------------------------------
# LOCAL SIGNALS & SLOTs & EVENTFILTERS
#----------------------------------------------------------------------
# monitor events and generate sig_resize event when resized
self.lbl_fixp_img.installEventFilter(self)
# ... then redraw image when resized
self.sig_resize.connect(self.resize_img)
self.cmb_wdg_fixp.currentIndexChanged.connect(self._update_fixp_widget)
self.butExportHDL.clicked.connect(self.exportHDL)
self.butSimHDL.clicked.connect(self.fx_sim_init)
#----------------------------------------------------------------------
inst_wdg_list = self._update_filter_cmb()
if len(inst_wdg_list) == 0:
logger.warning("No fixpoint filters found!")
else:
logger.debug("Imported {0:d} fixpoint filters:\n{1}"
.format(len(inst_wdg_list.split("\n"))-1, inst_wdg_list))
self._update_fixp_widget()
#------------------------------------------------------------------------------
def _update_filter_cmb(self):
"""
(Re-)Read list of available fixpoint filters for a given filter design
every time a new filter design is selected.
Then try to import the fixpoint designs in the list and populate the
fixpoint implementation combo box `self.cmb_wdg_fixp` when successfull.
"""
inst_wdg_str = "" # full names of successfully instantiated widgets for logging
last_fx_wdg = qget_cmb_box(self.cmb_wdg_fixp, data=False) # remember last fx widget setting
self.cmb_wdg_fixp.clear()
fc = fb.fil[0]['fc']
if 'fix' in fb.filter_classes[fc]:
for class_name in fb.filter_classes[fc]['fix']: # get class name
try:
# construct module + class name
mod_class_name = fb.fixpoint_classes[class_name]['mod'] + '.' + class_name
disp_name = fb.fixpoint_classes[class_name]['name'] # # and display name
self.cmb_wdg_fixp.addItem(disp_name, mod_class_name)
inst_wdg_str += '\t' + class_name + ' : ' + mod_class_name + '\n'
except AttributeError as e:
logger.warning('Widget "{0}":\n{1}'.format(class_name,e))
self.embed_fixp_img(self.no_fx_filter_img)
continue
except KeyError as e:
logger.warning("No fixpoint filter for filter type {0} available.".format(e))
self.embed_fixp_img(self.no_fx_filter_img)
continue
# restore last fxp widget if possible
idx = self.cmb_wdg_fixp.findText(last_fx_wdg)
# set to idx 0 if not found (returned -1)
self.cmb_wdg_fixp.setCurrentIndex(max(idx,0))
else: # no fixpoint widget
self.embed_fixp_img(self.no_fx_filter_img)
return inst_wdg_str
#------------------------------------------------------------------------------
[docs] def eventFilter(self, source, event):
"""
Filter all events generated by monitored QLabel, only resize events are
processed here, generating a `sig_resize` signal. All other events
are passed on to the next hierarchy level.
"""
if event.type() == QEvent.Resize:
self.sig_resize.emit()
# Call base class method to continue normal event processing:
return super(Input_Fixpoint_Specs, self).eventFilter(source, event)
#------------------------------------------------------------------------------
[docs] def embed_fixp_img(self, img_file):
"""
Embed image as self.img_fixp, either in png or svg format
Parameters:
img_file: str
path and file name to image file
"""
if not os.path.isfile(img_file):
logger.warning("Image file {0} doesn't exist.".format(img_file))
img_file = self.default_fx_img
# _, file_extension = os.path.splitext(self.fx_wdg_inst.img_name)
_, file_extension = os.path.splitext(img_file)
if file_extension == '.png':
self.img_fixp = QPixmap(img_file)
#self.lbl_fixp_img.setPixmap(QPixmap(self.img_fixp)) # fixed size
# elif file_extension == '.svg':
# self.img_fixp = QtSvg.QSvgWidget(img_file)
else:
logger.error('Unknown file extension "{0}"!'.format(file_extension))
self.resize_img()
#------------------------------------------------------------------------------
[docs] def resize_img(self):
"""
Triggered when self (the widget) is resized, consequently the image
inside QLabel is resized to completely fill the label while keeping
the aspect ratio.
This doesn't really work at the moment.
"""
if hasattr(self.parent, "width"): # needed for module test
par_w, par_h = self.parent.width(), self.parent.height()
else:
par_w, par_h = 300, 700 # fixed size for module testself.lbl_img_fixp
lbl_w, lbl_h = self.lbl_fixp_img.width(), self.lbl_fixp_img.height()
img_w, img_h = self.img_fixp.width(), self.img_fixp.height()
if img_w > 10:
max_h = int(max(np.floor(img_h * par_w/img_w) - 15, 20))
else:
max_h = 200
logger.debug("img size: {0},{1}, frm size: {2},{3}, max_h: {4}".format(img_w, img_h, par_w, par_h, max_h))
# The following doesn't work because the width of the parent widget can grow
# with the image size
# img_scaled = self.img_fixp.scaled(self.lbl_fixp_img.size(), Qt.KeepAspectRatio, Qt.SmoothTransformation)
img_scaled = self.img_fixp.scaledToHeight(max_h, Qt.SmoothTransformation)
#img_scaled = self.img_fixp.scaledToHeight(max_h)
self.lbl_fixp_img.setPixmap(img_scaled)
#------------------------------------------------------------------------------
def _update_fixp_widget(self):
"""
This method is called at the initialization of the widget and when
a new fixpoint filter implementation is selected from the combo box:
- Destruct old instance of fixpoint filter widget `self.fx_wdg_inst`
- Import and instantiate new fixpoint filter widget e.g. after changing the
filter topology as
- Try to load image for filter topology
- Update the UI of the widget
- Try to instantiate HDL filter as `self.fx_wdg_inst.fixp_filter` with
dummy data
"""
def _disable_fx_wdg(self):
if hasattr(self, "fx_wdg_inst") and self.fx_wdg_inst is not None: # is a fixpoint widget loaded?
try:
self.layH_fx_wdg.removeWidget(self.fx_wdg_inst) # remove widget from layout
self.fx_wdg_inst.deleteLater() # delete QWidget when scope has been left
except AttributeError as e:
logger.error("Destructing UI failed!\n{0}".format(e))
self.fx_wdg_found = False
self.butSimFxPy.setVisible(False)
self.butSimHDL.setEnabled(False)
self.butExportHDL.setEnabled(False)
#self.layH_fx_wdg.setVisible(False)
self.img_fixp = self.embed_fixp_img(self.no_fx_filter_img)
self.lblTitle.setText("")
self.fx_wdg_inst = None
# destruct old fixpoint widget instance
_disable_fx_wdg(self)
# instantiate new fixpoint widget class as self.fx_wdg_inst
cmb_wdg_fx_cur = qget_cmb_box(self.cmb_wdg_fixp, data=False)
if cmb_wdg_fx_cur: # at least one valid fixpoint widget found
self.fx_wdg_found = True
# get list [module name and path, class name]
fx_mod_class_name = qget_cmb_box(self.cmb_wdg_fixp, data=True).rsplit('.',1)
fx_mod = importlib.import_module(fx_mod_class_name[0]) # get module
fx_wdg_class = getattr(fx_mod, fx_mod_class_name[1]) # get class
#++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
self.fx_wdg_inst = fx_wdg_class(self) # instantiate the fixpoint widget
#++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
self.layH_fx_wdg.addWidget(self.fx_wdg_inst, stretch=1) # and add it to layout
self.fx_wdg_inst.setVisible(True)
# Doesn't work at the moment, combo box becomes inaccessible
# try:
# self.fx_wdg_inst = fx_wdg_class(self) # instantiate the widget
# self.layH_fx_wdg.addWidget(self.fx_wdg_inst, stretch=1) # and add it to layout
# except KeyError as e:
# logger.warning('Key Error {0} in fixpoint filter \n{1}'\
# .format(e, fx_mod_name + "." + cmb_wdg_fx_cur))
# _disable_fx_wdg(self)
# return
self.wdg_dict2ui() # initialize the fixpoint subwidgets from the fxqc_dict
#---- connect signals to fx_wdg_inst ----
if hasattr(self.fx_wdg_inst, "sig_rx"):
self.sig_rx.connect(self.fx_wdg_inst.sig_rx)
if hasattr(self.fx_wdg_inst, "sig_tx"):
self.fx_wdg_inst.sig_tx.connect(self.sig_rx)
#---- get name of new fixpoint filter image ----
if not (hasattr(self.fx_wdg_inst, "img_name") and self.fx_wdg_inst.img_name): # is an image name defined?
img_file = self.default_fx_img
else:
file_path = os.path.dirname(fx_mod.__file__) # get path of imported fixpoint widget and
img_file = os.path.join(file_path, self.fx_wdg_inst.img_name) # construct full image name from it
#---- instantiate and scale graphic of filter topology ----
self.embed_fixp_img(img_file)
#---- set title and description for filter
self.lblTitle.setText(self.fx_wdg_inst.title)
#--- try to reference Python fixpoint filter instance -----
# if hasattr(self.fx_wdg_inst,'fxpy_filter'):
# self.fxpy_filter_inst = self.fx_wdg_inst.fxpy_filter
# self.butSimFxPy.setEnabled(True)
# else:
# self.butSimFxPy.setVisible(False)
#--- Check whether fixpoint widget contains HDL filters -----
if hasattr(self.fx_wdg_inst,'fixp_filter'):
self.butExportHDL.setEnabled(hasattr(self.fx_wdg_inst, "to_verilog"))
self.butSimHDL.setEnabled(hasattr(self.fx_wdg_inst, "run_sim"))
self.update_fxqc_dict()
self.sig_tx.emit({'sender':__name__, 'fx_sim':'specs_changed'})
else:
self.butSimHDL.setEnabled(False)
self.butExportHDL.setEnabled(False)
else:
_disable_fx_wdg(self)
#------------------------------------------------------------------------------
[docs] def wdg_dict2ui(self):
"""
Trigger an update of the fixpoint widget UI when view (i.e. fixpoint
coefficient format) or data have been changed outside this class. Additionally,
pass the fixpoint quantization widget to update / restore other subwidget
settings.
Set the RUN button to "changed".
"""
# fb.fil[0]['fxqc']['QCB'].update({'scale':(1 << fb.fil[0]['fxqc']['QCB']['W'])})
self.wdg_q_input.dict2ui(fb.fil[0]['fxqc']['QI'])
self.wdg_q_output.dict2ui(fb.fil[0]['fxqc']['QO'])
self.wdg_w_input.dict2ui(fb.fil[0]['fxqc']['QI'])
self.wdg_w_output.dict2ui(fb.fil[0]['fxqc']['QO'])
if self.fx_wdg_found and hasattr(self.fx_wdg_inst, "dict2ui"):
self.fx_wdg_inst.dict2ui()
# dict_sig = {'sender':__name__, 'fx_sim':'specs_changed'}
# self.sig_tx.emit(dict_sig)
qstyle_widget(self.butSimHDL, "changed")
#------------------------------------------------------------------------------
[docs] def update_fxqc_dict(self):
"""
Update the fxqc dictionary before simulation / HDL generation starts.
"""
if self.fx_wdg_found:
# get a dict with the coefficients and fixpoint settings from fixpoint widget
if hasattr(self.fx_wdg_inst, "ui2dict"):
fb.fil[0]['fxqc'].update(self.fx_wdg_inst.ui2dict())
logger.debug("update fxqc: \n{0}".format(pprint_log(fb.fil[0]['fxqc'])))
else:
logger.error("No fixpoint widget found!")
#------------------------------------------------------------------------------
[docs] def exportHDL(self):
"""
Synthesize HDL description of filter
"""
if not hasattr(self.fx_wdg_inst, 'construct_fixp_filter'):
logger.warning('Fixpoint widget has no method "construct_fixp_filter", aborting.')
return
dlg = QFD(self) # instantiate file dialog object
file_types = "Verilog (*.v)"
dlg.setDefaultSuffix('v') # needed for overwrite confirmation when name is entered without suffix
dlg.setWindowTitle('Export Vlog')
dlg.setNameFilter(file_types)
dlg.setDirectory(dirs.save_dir)
dlg.setAcceptMode(QFD.AcceptSave)# set mode "save file" instead "open file"
dlg.setOption(QFD.DontConfirmOverwrite, False)
if dlg.exec_() == QFD.Accepted:
hdl_file = qstr(dlg.selectedFiles()[0])
# hdl_type = extract_file_ext(qstr(dlg.selectedNameFilter()))[0]
# =============================================================================
# # static method getSaveFileName_() is simple but unflexible
# hdl_file, hdl_filter = dlg.getSaveFileName_(
# caption="Save Verilog netlist as (this also defines the module name)",
# directory=dirs.save_dir, filter=file_types)
# hdl_file = qstr(hdl_file)
# if hdl_file != "": # "operation cancelled" returns an empty string
# # return '.v' or '.vhd' depending on filetype selection:
# # hdl_type = extract_file_ext(qstr(hdl_filter))[0]
# # sanitized dir + filename + suffix. The filename suffix is replaced
# # by `v` later.
# hdl_file = os.path.normpath(hdl_file) # complete path + file name
# =============================================================================
hdl_dir_name = os.path.dirname(hdl_file) # extract the directory path
if not os.path.isdir(hdl_dir_name): # create directory if it doesn't exist
os.mkdir(hdl_dir_name)
dirs.save_dir = hdl_dir_name # make this directory the new default / base dir
hdl_file_name = os.path.splitext(os.path.basename(hdl_file))[0]
hdl_full_name = os.path.join(hdl_dir_name, hdl_file_name + ".v")
vlog_mod_name = re.sub(r'\W+', '', hdl_file_name).lower() # remove all non-alphanumeric chars
logger.info('Creating hdl_file "{0}"\n\twith top level module "{1}"'
.format(hdl_full_name, vlog_mod_name))
try:
self.update_fxqc_dict()
self.fx_wdg_inst.construct_fixp_filter()
code = self.fx_wdg_inst.to_verilog(name=vlog_mod_name)
#logger.info(str(code)) # print verilog code to console
with io.open(hdl_full_name, 'w', encoding="utf8") as f:
f.write(str(code))
logger.info("HDL conversion finished!")
except (IOError, TypeError) as e:
logger.warning(e)
##------------------------------------------------------------------------------
# def fx_sim_py(self):
# """
# Start fix-point simulation: Send the ``fxqc_dict``
# containing all quantization information and request a stimulus signal
# Not implemented yet
# """
# try:
# logger.info("Started python fixpoint simulation")
# self.update_fxqc_dict()
# self.fxpyfilter.setup(fb.fil[0]['fxqc']) # setup filter instance
# dict_sig = {'sender':__name__, 'fx_sim':'get_stimulus'}
# self.sig_tx.emit(dict_sig)
#
# except AttributeError as e:
# logger.warning("Fixpoint stimulus generation failed:\n{0}".format(e))
# return
#------------------------------------------------------------------------------
[docs] def fx_sim_init(self):
"""
Initialize fix-point simulation:
- Update the `fxqc_dict` containing all quantization information
- Setup a filter instance for migen simulation
- Request a stimulus signal
"""
if not hasattr(self.fx_wdg_inst, 'construct_fixp_filter'):
logger.error('Fixpoint widget has no method "construct_fixp_filter", aborting.')
self.sig_tx.emit({'sender':__name__, 'fx_sim':'error'})
return
try:
logger.info("Fixpoint simulation started")
self.t_start = time.process_time()
self.update_fxqc_dict()
self.fx_wdg_inst.construct_fixp_filter() # setup filter instance
dict_sig = {'sender':__name__, 'fx_sim':'get_stimulus'}
self.sig_tx.emit(dict_sig)
except ValueError as e: # exception
logger.error('Fixpoint stimulus generation failed during "init" for dict\n{0}'
'\nwith "{1} "'.format(pprint_log(dict_sig), e))
return
#------------------------------------------------------------------------------
[docs] def fx_sim_set_stimulus(self, dict_sig):
"""
- Get fixpoint stimulus from `dict_sig` in integer format
- Pass it to the fixpoint filter and calculate the fixpoint response
- Send the reponse to the plotting widget
"""
try:
logger.debug('Starting fixpoint simulation with stimulus from "{0}":\n\tfx_stimulus:{1}'
'\n\tStimuli: Shape {2} of type "{3}"'
.format(
dict_sig['sender'],
pprint_log(dict_sig['fx_stimulus'], tab=" "),
np.shape(dict_sig['fx_stimulus']),
dict_sig['fx_stimulus'].dtype,
))
self.t_stim = time.process_time()
logger.info("Fixpoint simulation [{0:5.3g} ms]: Stimuli generated"\
.format((self.t_stim-self.t_start)*1000))
# Run fixpoint simulation and return the results as integer values:
self.fx_results=self.fx_wdg_inst.run_sim(dict_sig['fx_stimulus']) # Run the simulation
self.t_resp = time.process_time()
if len(self.fx_results) == 0:
logger.warning("Fixpoint simulation returned empty results!")
else:
#logger.debug("fx_results: {0}"\
# .format(pprint_log(self.fx_results, tab= " ")))
logger.debug('Fixpoint simulation successful for dict\n{0}'
'\tStimuli: Shape {1} of type "{2}"'
'\n\tResponse: Shape {3} of type "{4}"'\
.format(pprint_log(dict_sig),
np.shape(dict_sig['fx_stimulus']),
dict_sig['fx_stimulus'].dtype,
np.shape(self.fx_results),
type(self.fx_results)
))
logger.info('Fixpoint simulation [{0:5.3g} ms]: Response calculated'\
.format((self.t_resp - self.t_stim)*1000))
#TODO: fixed point / integer to float conversion?
#TODO: color push-button to show state of simulation
#TODO: add QTimer single shot
# self.timer_id = QtCore.QTimer()
# self.timer_id.setSingleShot(True)
# # kill simulation after some idle time, also add a button for this
# self.timer_id.timeout.connect(self.kill_sim)
except ValueError as e:
logger.error("Simulator error {0}".format(e))
self.fx_results = None
qstyle_widget(self.butSimHDL, "error")
self.sig_tx.emit({'sender':__name__, 'fx_sim':'error'})
return
except AssertionError as e:
logger.error('Fixpoint simulation failed for dict\n{0}'
'\twith msg. "{1}"\n\tStimuli: Shape {2} of type "{3}"'
'\n\tResponse: Shape {4} of type "{5}"'\
.format(pprint_log(dict_sig), e,
np.shape(dict_sig['fx_stimulus']),
dict_sig['fx_stimulus'].dtype,
np.shape(self.fx_results),
type(self.fx_results)
))
self.fx_results = None
qstyle_widget(self.butSimHDL, "error")
self.sig_tx.emit({'sender':__name__, 'fx_sim':'error'})
return
logger.debug("Sending fixpoint results")
dict_sig = {'sender':__name__, 'fx_sim':'set_results',
'fx_results':self.fx_results }
self.sig_tx.emit(dict_sig)
qstyle_widget(self.butSimHDL, "normal")
return
###############################################################################
if __name__ == '__main__':
from pyfda.libs.tree_builder import Tree_Builder
from pyfda.libs.compat import QApplication
from pyfda import pyfda_rc as rc
logging.basicConfig() # setup a basic logger
app = QApplication(sys.argv)
app.setStyleSheet(rc.qss_rc)
_ = Tree_Builder() # TODO_ couldn't this be a function?
mainw = Input_Fixpoint_Specs(None)
mainw.show()
app.exec_()
# test using "python -m pyfda.input_widgets.input_fixpoint_specs"