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vcd: creates gtkw file if filter_*.txt file is present

This commit is contained in:
Franck Jullien 2022-06-20 08:58:00 +02:00
parent 878f21a647
commit 8299105b7f
1 changed files with 19 additions and 0 deletions
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19
litescope/software/dump/vcd.py
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@ -4,6 +4,7 @@
# Copyright (c) 2015-2018 Florent Kermarrec <florent@enjoy-digital.fr> # Copyright (c) 2015-2018 Florent Kermarrec <florent@enjoy-digital.fr>
# SPDX-License-Identifier: BSD-2-Clause # SPDX-License-Identifier: BSD-2-Clause
from os.path import exists
from itertools import count from itertools import count
import datetime import datetime
import re import re
@ -51,6 +52,7 @@ class VCDDump(Dump):
# factor of 2 scale is because of 2x samples from fake clock # factor of 2 scale is because of 2x samples from fake clock
self.count_timescale = int(1 / (timescale_seconds * samplerate * 2)) self.count_timescale = int(1 / (timescale_seconds * samplerate * 2))
self.timescale_unit_str = si_prefix + "s" self.timescale_unit_str = si_prefix + "s"
self.filtered = []
def change(self): def change(self):
r = "" r = ""
@ -128,6 +130,16 @@ class VCDDump(Dump):
self.cnt += 1 self.cnt += 1
return r return r
def generate_gtkw(self, filename):
base_name = filename.split(".")[0]
with open("{}.gtkw".format(base_name), "w") as f:
f.write(f"[*] Auto-Generated by Litex\n")
f.write(f"[dumpfile] {filename}\n")
for s in self.filtered:
f.write("@2025\n")
f.write(f"^1 filter_{s.name}.txt\n")
f.write("{}[{}:0]\n".format(s.name, s.width - 1))
def __repr__(self): def __repr__(self):
r = "" r = ""
return r return r
@ -147,5 +159,12 @@ class VCDDump(Dump):
f.write(self.generate_valuechange()) f.write(self.generate_valuechange())
f.close() f.close()
for v in self.variables:
if exists(f"filter_{v.name}.txt"):
self.filtered.append(v)
if self.filtered:
self.generate_gtkw(filename)
def read(self, filename): def read(self, filename):
raise NotImplementedError("VCD files can not (yet) be read, please contribute!") raise NotImplementedError("VCD files can not (yet) be read, please contribute!")