107 lines
3.1 KiB
Python
107 lines
3.1 KiB
Python
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#!/usr/bin/env python3
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import argparse
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import fileinput
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import sys
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parser = argparse.ArgumentParser(description='Convert vcd2txt output to tikz-timing line.')
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parser.add_argument('filename', metavar='FILE', help='input txt file')
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parser.add_argument('signame', metavar='SIG', help='Signal name')
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parser.add_argument('-s', metavar='scale', default=1.0, type=float, help='Scale all time spans with this factor')
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parser.add_argument('-l', action='store_true', help='Logic signal (high/low)')
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parser.add_argument('-b', action='store_true', help='Display binary value')
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parser.add_argument('-x', action='store_true', help='Display hex value')
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parser.add_argument('-d', action='store_true', help='Display decimal value')
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args = parser.parse_args()
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start_time = None
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stop_time = None
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time_val = { }
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def value_to_logic(value):
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found_x = False
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for char in value:
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if char == '1':
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return "H"
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if char == 'x':
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found_x = True
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return "U" if found_x else "L"
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def value_to_binary(value):
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return "D{%s}" % value
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def value_to_hex(value):
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hex_string = ""
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found_def = False
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while len(value) % 4 != 0:
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value = "0" + value
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while len(value) != 0:
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bin_digits = value[0:4]
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hex_digit = 0
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value = value[4:]
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for b in bin_digits:
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if b == '0':
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hex_digit = hex_digit * 2
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elif b == '1':
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hex_digit = hex_digit * 2 + 1
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else:
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hex_digit += 100
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if hex_digit > 15:
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hex_string += "x"
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else:
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found_def = True
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hex_string += "0123456789abcdef"[hex_digit]
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if not found_def:
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return "U";
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return "D{%s}" % hex_string
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def value_to_decimal(value):
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val = 0
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found_def = False
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found_undef = False
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for digit in value:
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if digit == 'x':
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found_undef = True
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else:
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val = val*2 + int(digit)
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found_def = True
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if found_def:
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if found_undef:
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return "D{X}"
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else:
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return "D{%d}" % val
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return "U"
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for line in fileinput.input(args.filename):
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(node, time, name, value) = line.strip().split('\t')
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time = int(time)
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if start_time is None or start_time > time:
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start_time = time
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if stop_time is None or stop_time < time:
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stop_time = time
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if name == args.signame:
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if args.l:
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time_val[+time] = value_to_logic(value)
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elif args.b:
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time_val[+time] = value_to_binary(value)
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elif args.x:
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time_val[+time] = value_to_hex(value)
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elif args.d:
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time_val[+time] = value_to_decimal(value)
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else:
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time_val[+time] = value
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if start_time not in time_val:
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time_val[start_time] = "S"
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last_time = None
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last_value = None
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for t in sorted(time_val.keys()):
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if last_time is not None:
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print("%f%s" % ((t - last_time)*args.s, last_value), end='')
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(last_time, last_value) = (t, time_val[t])
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if last_time < stop_time:
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print("%f%s" % ((stop_time - last_time)*args.s, last_value), end='')
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print('')
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