From 285c072c38cb3b6a4966adcc16883e23b3868ac5 Mon Sep 17 00:00:00 2001
From: "Jan N. Bader" <darth.bader@darthbader.de>
Date: Fri, 28 Jul 2023 15:40:35 +0200
Subject: [PATCH] implemented logic inside draft;

---
 moku_pattern_gen.pl | 127 +++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 114 insertions(+), 13 deletions(-)

diff --git a/moku_pattern_gen.pl b/moku_pattern_gen.pl
index 1504e0b..21166da 100644
--- a/moku_pattern_gen.pl
+++ b/moku_pattern_gen.pl
@@ -2,21 +2,122 @@
 use strict;
 use warnings;
 #use Cwd;
+use Math::Round;    # for round()
+use List::Util;     # for max @list
 
-my $base_freq = 125 000 000;
-my $divider = 1;
-my $baudrate = $base_freq/$divider;
+### configure the pattern here ###
+my $divider = 1;                # configured freq divieder
+my $sig_period_c = 10;          # periode of RF during pulse in [base_cliqs]
+my $pulse_time = 9000;          # B1 puls duration in [ns]
+my $short_time = 1000;          # short switch on time in [ns]
+my $receive_time = 9900;        # receiver on time in [ns]
+my $recovery_time = 100;        # safety buffer between Rx and pulse in [ns]
+##################################
 
-my $sig_freq = 10 000 000;
-my $pulse_time = 9e-6;
-my $short_time = 1e-6;
-my $receive_time = 1e-5;
-my $recovery_time = 1e-7;
+### these are given or computed parameters ###
+my $base_freq = 125 000 000;    # sample freq of moku:GO
+my $base_cliq = 8;              # sample periode in ns
+my $max_cliqs = 32764;          # max sample length
 
-mkdir('CODE-AFE_pattern'.sprintf("%.0f", $baud_rate).'MHz', 0777);
-chdir 'CODE-AFE_pattern'.sprintf("%.0f", $baud_rate).'MHz';
+my @pins = (1,2,3,4,5,6);
+my @pin_names = ("LS1", "LS2", "HS", "SS", "LSS", "Rx")
 
-my $filename = '>>CODE-AFE_pattern'.sprintf("%.0f", $sig_freq).'MHz.csv';
-open(MYOUTFILE, $filename);
+$base_cliq *= $divider;
+my $baudrate = round($base_freq/$divider);
+my $sig_period = $sig_period_c * $base_cliq * 2;
+my $sig_freq = round(1/($sig_period*1e-9));      # B1 frequency
+##############################################
 
-print MYOURFILE "Pin 1; Pin 2; Pin 3; Pin4; Pin5; Pin6;";
+### function to return the float remainder of a division ###
+sub remainder {
+    my ($a, $b) = @_;
+    return undef unless $b;
+    return $a / $b - int($a / $b);
+}
+############################################################
+
+### create outfile in output directory sorted by sampling frequency ###
+my $dirname = 'CODE-AFE_pattern'.sprintf("%.0f", $baud_rate).'MHz';
+my $filename = 'CODE-AFE_pattern'.sprintf("%.0f", $sig_freq).'MHz.csv';
+mkdir($dirname, 0777);
+open(MYOUTFILE, '>>./'.$dirname.'/'.$filename);
+#######################################################################
+
+### create header with pin names ###
+foreach my $iterator (@pins) {
+    print MYOUTFILE "Pin ";
+    print MYOUTFILE $iterator;
+    if ($iterator != max @pins) {
+        print MYOUTFILE '; ';
+    }
+}
+print MYOUTFILE "\n";
+####################################
+
+### generate lines each containing one tick of the pattern ###
+my $last_cliq = 0;
+my $current_time = 0;
+my $t1 = $pulse_time;
+my $t2 = $t1 + $short_time;
+my $t3 = $t2 + $receive_time;
+my $t4 = $t3 + $recovery_time;
+
+for (my $i=0; $i < $max_cliqs; $i++) {
+    $current_time = $i * $base_cliq;
+    if ($current_time <= $t1) {
+        if (remainder($current_time, $sig_period) < 0.5) {
+            print MYOUTFILE "1; ";  #LS1
+            print MYOUTFILE "0; ";  #LS2
+        }
+        else {
+            print MYOUTFILE "0; ";  #LS1
+            print MYOUTFILE "1; ";  #LS2
+        }
+        print MYOUTFILE "1; ";  #HS
+        print MYOUTFILE "0; ";  #SS
+        print MYOUTFILE "1; ";  #LSS
+        print MYOUTFILE "0\n";  #Rx
+    }
+    elsif ($current_time <= $t2) {
+        print MYOUTFILE "1; ";  #LS1
+        print MYOUTFILE "1; ";  #LS2
+        print MYOUTFILE "0; ";  #HS
+        print MYOUTFILE "1; ";  #SS
+        print MYOUTFILE "1; ";  #LSS
+        print MYOUTFILE "0\n";  #Rx
+    }
+    elsif ($current_time <= $t3) {
+        print MYOUTFILE "0; ";  #LS1
+        print MYOUTFILE "0; ";  #LS2
+        print MYOUTFILE "0; ";  #HS
+        print MYOUTFILE "0; ";  #SS
+        print MYOUTFILE "0; ";  #LSS
+        print MYOUTFILE "1\n";  #Rx
+    }
+    elsif ($current_time <= $t4) {
+        print MYOUTFILE "0; ";  #LS1
+        print MYOUTFILE "0; ";  #LS2
+        print MYOUTFILE "0; ";  #HS
+        print MYOUTFILE "0; ";  #SS
+        print MYOUTFILE "1; ";  #LSS
+        print MYOUTFILE "0\n";  #Rx
+    }
+    else {
+        $last_cliq = $i;
+        last;
+    }
+}
+##############################################################
+
+### report results ###
+print "### CODE-AFE pattern file written ###";
+print "Filename: ".$filename;
+print "Created in dir: ".$dirname;
+print "B1 frequency will be: ".sprintf("%3.6f", $sig_freq)."MHz";
+print "pattern length: ".$last_cliq." of ".$max_cliqs." samples";
+print "#####################################";
+######################
+
+### cleanup ###
+close MYOUTFILE;
+###############