blob: 5811f2c1c70db504ec8086d7e9bddea809106767 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
#!/usr/bin/perl
#
# A perl script for automatic generation of asynchronous stimuli
# for USART input in GPSIM
# Written by Wojciech M. Zabolotny (wzab@ise.pw.edu.pl) 3 Aug 2001
# This code is so simple that I release it to public domain
#
# Calling syntax:
# usartst [-f 1] -r divisor -o output_file -n stimuli_name times_and_strings_list
#
use strict;
use Getopt::Std;
use vars qw/$i $sim_time $bit_time $opt_f $opt_r $opt_o $opt_n *OUTFILE/;
# The global variables
$sim_time=0;
$bit_time=10;
#The procedure below sends the string of characters
sub emit_string
{
my $i;
for ( $i=0 ; $i<length($_[0]) ; $i++)
{
emit_char(substr($_[0],$i,1));
}
}
#The procedure below sends the single character
sub emit_char
{
my $code=ord $_[0];
my $i=1;
emit_bit(0); #The start bit
while ( $i<256 )
{
emit_bit ( $code & $i ? 1 : 0);
$i *= 2;
}
emit_bit(1); #The stop bit
}
#The procedure below sends the single bit
sub emit_bit
{
print OUTFILE $sim_time . " " . $_[0] . "\n";
$sim_time += $bit_time;
}
getopt("fron");
# First get options (f=fast, r=baud rate divisor)
# Let's calculate the time of single bit
$bit_time = ( $opt_f ? 16 : 64 ) * ($opt_r +1);
# Open the output file
open OUTFILE,">".$opt_o or die "I can't open the output file:" . $opt_o;
#Let's print the stimulus header
print OUTFILE "stimulus asynchronous_stimulus\n";
print OUTFILE "initial_state 1\n";
print OUTFILE"start_cycle 0\n";
# Now the @ARGV should hold the pairs: time to emit the string, and string
for ($i=0;$i<=$#ARGV;$i+=2)
{
#The time must be monotonic
my $new_time = $ARGV[$i];
my $new_string = $ARGV[$i+1];
if ( substr($new_time,0,1) eq "+" )
{
$sim_time=$sim_time + $new_time;
}
else
{
if ( $new_time < $sim_time )
{
die "Time must be monotonic!!!"
}
else
{
$sim_time=$new_time;
}
}
#Now we know the string emission time and the string, so let's start
#sending
emit_string($new_string);
}
#Let's print the stimuli footer
print OUTFILE "name ". $opt_n ."\n";
print OUTFILE "end\n";
close OUTFILE;
|
