124 lines
3.9 KiB
Perl
124 lines
3.9 KiB
Perl
#!/usr/bin/perl -w
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use strict;
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use warnings;
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#use Cwd;
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use Math::Round; # for round()
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use List::Util; # for max @list
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### configure the pattern here ###
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my $divider = 1; # configured freq divieder
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my $sig_period_c = 10; # periode of RF during pulse in [base_cliqs]
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my $pulse_time = 9000; # B1 puls duration in [ns]
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my $short_time = 1000; # short switch on time in [ns]
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my $receive_time = 9900; # receiver on time in [ns]
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my $recovery_time = 100; # safety buffer between Rx and pulse in [ns]
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##################################
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### these are given or computed parameters ###
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my $base_freq = 125 000 000; # sample freq of moku:GO
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my $base_cliq = 8; # sample periode in ns
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my $max_cliqs = 32764; # max sample length
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my @pins = (1,2,3,4,5,6);
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my @pin_names = ("LS1", "LS2", "HS", "SS", "LSS", "Rx")
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$base_cliq *= $divider;
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my $baudrate = round($base_freq/$divider);
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my $sig_period = $sig_period_c * $base_cliq * 2;
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my $sig_freq = round(1/($sig_period*1e-9)); # B1 frequency
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##############################################
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### function to return the float remainder of a division ###
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sub remainder {
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my ($a, $b) = @_;
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return undef unless $b;
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return $a / $b - int($a / $b);
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}
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############################################################
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### create outfile in output directory sorted by sampling frequency ###
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my $dirname = 'CODE-AFE_pattern'.sprintf("%.0f", $baud_rate).'MHz';
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my $filename = 'CODE-AFE_pattern'.sprintf("%.0f", $sig_freq).'MHz.csv';
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mkdir($dirname, 0777);
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open(MYOUTFILE, '>>./'.$dirname.'/'.$filename);
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#######################################################################
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### create header with pin names ###
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foreach my $iterator (@pins) {
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print MYOUTFILE "Pin ";
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print MYOUTFILE $iterator;
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if ($iterator != max @pins) {
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print MYOUTFILE '; ';
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}
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}
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print MYOUTFILE "\n";
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####################################
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### generate lines each containing one tick of the pattern ###
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my $last_cliq = 0;
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my $current_time = 0;
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my $t1 = $pulse_time;
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my $t2 = $t1 + $short_time;
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my $t3 = $t2 + $receive_time;
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my $t4 = $t3 + $recovery_time;
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for (my $i=0; $i < $max_cliqs; $i++) {
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$current_time = $i * $base_cliq;
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if ($current_time <= $t1) {
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if (remainder($current_time, $sig_period) < 0.5) {
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print MYOUTFILE "1; "; #LS1
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print MYOUTFILE "0; "; #LS2
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}
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else {
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print MYOUTFILE "0; "; #LS1
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print MYOUTFILE "1; "; #LS2
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}
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print MYOUTFILE "1; "; #HS
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print MYOUTFILE "0; "; #SS
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print MYOUTFILE "1; "; #LSS
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print MYOUTFILE "0\n"; #Rx
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}
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elsif ($current_time <= $t2) {
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print MYOUTFILE "1; "; #LS1
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print MYOUTFILE "1; "; #LS2
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print MYOUTFILE "0; "; #HS
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print MYOUTFILE "1; "; #SS
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print MYOUTFILE "1; "; #LSS
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print MYOUTFILE "0\n"; #Rx
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}
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elsif ($current_time <= $t3) {
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print MYOUTFILE "0; "; #LS1
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print MYOUTFILE "0; "; #LS2
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print MYOUTFILE "0; "; #HS
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print MYOUTFILE "0; "; #SS
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print MYOUTFILE "0; "; #LSS
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print MYOUTFILE "1\n"; #Rx
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}
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elsif ($current_time <= $t4) {
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print MYOUTFILE "0; "; #LS1
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print MYOUTFILE "0; "; #LS2
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print MYOUTFILE "0; "; #HS
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print MYOUTFILE "0; "; #SS
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print MYOUTFILE "1; "; #LSS
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print MYOUTFILE "0\n"; #Rx
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}
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else {
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$last_cliq = $i;
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last;
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}
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}
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##############################################################
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### report results ###
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print "### CODE-AFE pattern file written ###";
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print "Filename: ".$filename;
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print "Created in dir: ".$dirname;
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print "B1 frequency will be: ".sprintf("%3.6f", $sig_freq)."MHz";
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print "pattern length: ".$last_cliq." of ".$max_cliqs." samples";
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print "#####################################";
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######################
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### cleanup ###
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close MYOUTFILE;
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###############
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