p[pin]=0/1 or o[offset]=111 format ? for last BSR

[x300-pci] / openocd-jtag-boundary-scan.pl

diff --git a/openocd-jtag-boundary-scan.pl b/openocd-jtag-boundary-scan.pl
index 70a2613..8462f5a 100755 (executable)
--- a/openocd-jtag-boundary-scan.pl
+++ b/openocd-jtag-boundary-scan.pl
@@ -65,11 +65,13 @@ my @sort = sort {
        $aa <=> $bb } keys %$io2bit;
 warn "# sort = ",dump(@sort);
 
+my $last_bits = '';
 sub print_io {
        my $bits = shift;
-       my $i = 0;
-#      foreach my $io ( @sort ) {
-       print "pin off io___ I C O | " x 4, $openocd_remote,"\n";
+       my $o_bits = $bits;
+       $bits = reverse $bits; # make substr work as expected
+
+       print "pin off io___ ICO prv | " x 4, $openocd_remote,"\n";
        foreach my $i ( 0 .. ($#$pin2io/4)-1 ) {
                foreach my $j ( 0 .. 3 ) {
                        #my $pin = ($i*4) + $j + 1; # rows
@@ -77,14 +79,17 @@ sub print_io {
                        my $io = $pin2io->[$pin];
                        my $o = $io2bit->{$io}->[0];
                        if ( defined $o ) {
-                               printf "%-3d %-3d %-5s %d %d %d | ", $pin, $o, $io, split(//, substr($bits, $o, 3));
+                               my $l = $b = substr($bits, $o, 3);
+                               $l = substr($last_bits,$o,3) if $last_bits;
+                               printf "%-3d %-3d %-5s %3s %3s | ", $pin, $o, $io, $b, $b ne $l ? $l : ''
                        } else {
-                               printf "%-3d ... %-5s       | ", $pin, $io;
+                               printf "%-3d ... %-5s %3s %3s | ", $pin, $io, '', '';
                        }
                }
                print "\n";
        }
        print "\n";
+       $last_bits = $o_bits;
 }
 
 #foreach my $h (qw(0 1 2 e f 10 11 12 1e 1f 20 30 40 50 100 200 1000)) {
@@ -126,7 +131,7 @@ while (<$sock>) {
                my $bin = hex2bin($hex);
                diff_bits($BSR, $bin);
                $BSR = $bin;
-               print_io $bin;
+               print_io $bin if $bin ne $last_bits;
                last;
        } else {
                warn "# in ",dump($_);
@@ -146,31 +151,54 @@ sub diff_bits {
                        $o[$i].='>'.$n[$i];
                }
        }
-       return join('', @o);
+       my $diff = join('', @o);
+       print "# diff_bits $diff\n";
 }
 
 print "[press enter]\n";
 my $cmd = <STDIN>;
 chomp $cmd;
-if ( $cmd =~ /(\d+)=(\d)/ ) {
-       my ( $pin, $v ) = ( $1, $2 );
-       warn "# pin $pin = $v\n";
+if ( $cmd =~ /(p|o)(\d+)=(\d+)/ ) {
+       my ( $what, $p, $v ) = ( $1, $2, $3 );
+
+       my $old_bsr = reverse $BSR;
+       my $b = $old_bsr;
+
+       if ( $what eq 'p' && length($v) == 1 ) {
 
-       my $io = $pin2io->[$pin];
-       my $bit = $io2bit->{$io}->[0];
+               my $pin = $p;
+               warn "# pin $pin = $v\n";
 
-       my $b = substr($BSR,0,$bit+1)
-               . ( substr($BSR,$bit+1,1) ^ 1 )
-               . ( $v & 1 )
-               . substr($BSR,$bit+3)
-               ;
+               my $io = $pin2io->[$pin];
+               my $bit = $io2bit->{$io}->[0];
 
-       print diff_bits( $BSR, $b ), $/;
+               $b =
+                         substr($old_bsr,0,$bit+1) # leave input as-is
+                       . ( $v eq 'Z' ? 1 : 0 )     # control
+                       . ( $v & 1 )                # output
+                       . substr($old_bsr,$bit+3)
+                       ;
+
+       } elsif ( $what eq 'o' && $p < 288 ) {
+               my $o = $p;
+               $b = substr($old_bsr,0,$o) . reverse $v . substr($old_bsr,$o+length($v));
+       } else {
+               print "IGNORED ",dump( $what, $p, $v );
+       }
+
+       $b = reverse $b;
+
+       diff_bits( $BSR, $b ), $/;
 
        print $sock "irscan x300.tap 0x55\n"; # SAMPLE/PRELOAD
        print $sock "drscan x300.tap 288 0x", bin2hex($b), "\n";
        print $sock "irscan x300.tap 0x00\n"; # EXTEST
        print $sock "drscan x300.tap 288 0x", bin2hex($b), "\n";
+
+} elsif ( $cmd =~ m/\?/ ) {
+       $last_bits = '';
+       print $sock "irscan x300.tap 0x55\n"; # SAMPLE/PRELOAD
+       print $sock "drscan x300.tap 288 0\n";
 } else {
        print $sock "irscan x300.tap 0x55\n"; # SAMPLE/PRELOAD
        print $sock "drscan x300.tap 288 0\n";