From: Vladimir Burian <buriavl2@fel.cvut.cz>
Date: Wed, 15 Jun 2011 06:10:06 +0000 (+0200)
Subject: Wave_table initialization data format modified.
X-Git-Url: http://rtime.felk.cvut.cz/gitweb/fpga/pwm.git/commitdiff_plain

Wave_table initialization data format modified.

It's no longer necessary to have initialization file with as many lines as
is the wave_table size. If the initialization file is shorter then the file
is read again from its first line. So the initialization file can contain
commutation profile values of one period only.

Signed-off-by: Vladimir Burian <buriavl2@fel.cvut.cz>
---

diff --git a/wave_table.vhd b/wave_table.vhd
index 5637e48..af6ef6c 100644
--- a/wave_table.vhd
+++ b/wave_table.vhd
@@ -50,6 +50,14 @@ architecture behavioral of wave_table is
   begin
     for i in wave_table_t'range loop
       readline(table_file, file_line);
+
+      if endfile(table_file) then
+        file_close(table_file);
+        file_open(table_file, file_name, read_mode);
+
+        readline(table_file, file_line);
+      end if;
+
       read(file_line, table(i));
     end loop;