From 772330608acd9726e406d182a339a314d2f046a2 Mon Sep 17 00:00:00 2001
From: Clifford Wolf <clifford@clifford.at>
Date: Wed, 19 Feb 2014 12:40:49 +0100
Subject: Added vcd2txt.pl and txt2tikztiming.py (tests/tools/...)

---
 tests/tools/txt2tikztiming.py | 109 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100755 tests/tools/txt2tikztiming.py

(limited to 'tests/tools/txt2tikztiming.py')

diff --git a/tests/tools/txt2tikztiming.py b/tests/tools/txt2tikztiming.py
new file mode 100755
index 00000000..cfefe339
--- /dev/null
+++ b/tests/tools/txt2tikztiming.py
@@ -0,0 +1,109 @@
+#!/usr/bin/python
+
+from __future__ import division
+from __future__ import print_function
+
+import argparse
+import fileinput
+import sys
+
+parser = argparse.ArgumentParser(description='Convert vcd2txt output to tikz-timing line.')
+parser.add_argument('filename', metavar='FILE', help='input txt file')
+parser.add_argument('signame', metavar='SIG', help='Signal name')
+parser.add_argument('-s', metavar='scale', default=1.0, type=float, help='Scale all time spans with this factor')
+parser.add_argument('-l', action='store_true', help='Logic signal (high/low)')
+parser.add_argument('-b', action='store_true', help='Display binary value')
+parser.add_argument('-x', action='store_true', help='Display hex value')
+parser.add_argument('-d', action='store_true', help='Display decimal value')
+args = parser.parse_args()
+
+start_time = None
+stop_time = None
+time_val = { }
+
+def value_to_logic(value):
+    found_x = False
+    for char in value:
+        if char == '1':
+            return "H"
+        if char == 'x':
+            found_x = True
+    return "U" if found_x else "L"
+
+def value_to_binary(value):
+    return "D{%s}" % value
+
+def value_to_hex(value):
+    hex_string = ""
+    found_def = False
+    while len(value) % 4 != 0:
+        value = "0" + value
+    while len(value) != 0:
+        bin_digits = value[0:4]
+        hex_digit = 0
+        value = value[4:]
+        for b in bin_digits:
+            if b == '0':
+                hex_digit = hex_digit * 2
+            elif b == '1':
+                hex_digit = hex_digit * 2 + 1
+            else:
+                hex_digit += 100
+        if hex_digit > 15:
+            hex_string += "x"
+        else:
+            found_def = True
+            hex_string += "0123456789abcdef"[hex_digit]
+    if not found_def:
+        return "U";
+    return "D{%s}" % hex_string
+
+def value_to_decimal(value):
+    val = 0
+    found_def = False
+    found_undef = False
+    for digit in value:
+        if digit == 'x':
+            found_undef = True
+        else:
+            val = val*2 + int(digit)
+            found_def = True
+    if found_def:
+        if found_undef:
+            return "D{X}"
+        else:
+            return "D{%d}" % val
+    return "U"
+
+for line in fileinput.input(args.filename):
+    (node, time, name, value) = line.strip().split('\t')
+    time = int(time)
+    if start_time is None or start_time > time:
+        start_time = time
+    if stop_time is None or stop_time < time:
+        stop_time = time
+    if name == args.signame:
+        if args.l:
+            time_val[+time] = value_to_logic(value)
+        elif args.b:
+            time_val[+time] = value_to_binary(value)
+        elif args.x:
+            time_val[+time] = value_to_hex(value)
+        elif args.d:
+            time_val[+time] = value_to_decimal(value)
+        else:
+            time_val[+time] = value
+
+if start_time not in time_val:
+    time_val[start_time] = "S"
+
+last_time = None
+last_value = None
+for t in sorted(time_val.keys()):
+    if last_time is not None:
+        print("%f%s" % ((t - last_time)*args.s, last_value), end='')
+    (last_time, last_value) = (t, time_val[t])
+if last_time < stop_time:
+    print("%f%s" % ((stop_time - last_time)*args.s, last_value), end='')
+print('')
+
-- 
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