improve diff_bits

diff --git a/openocd-jtag-boundary-scan.pl b/openocd-jtag-boundary-scan.pl
index 70a2613..b2a2794 100755 (executable)
--- a/openocd-jtag-boundary-scan.pl
+++ b/openocd-jtag-boundary-scan.pl
@@ -146,7 +146,8 @@ sub diff_bits {
                        $o[$i].='>'.$n[$i];
                }
        }
-       return join('', @o);
+       my $diff = join('', @o);
+       print "# diff_bits $diff\n";
 }
 
 print "[press enter]\n";
@@ -165,7 +166,7 @@ if ( $cmd =~ /(\d+)=(\d)/ ) {
                . substr($BSR,$bit+3)
                ;
 
-       print diff_bits( $BSR, $b ), $/;
+       diff_bits( $BSR, $b ), $/;
 
        print $sock "irscan x300.tap 0x55\n"; # SAMPLE/PRELOAD
        print $sock "drscan x300.tap 288 0x", bin2hex($b), "\n";