Wave_table initialization data format modified.

[fpga/pwm.git] / wave_table.vhd

diff --git a/wave_table.vhd b/wave_table.vhd
index 8bd9f03785075be1dff0512162fbff728128eb85..af6ef6cde4d3a7904a4c6cd10f76a4777d297d98 100644 (file)
--- a/wave_table.vhd
+++ b/wave_table.vhd
@@ -43,13 +43,21 @@ architecture behavioral of wave_table is
   type wave_table_t is array (0 to SIZE-1) of bit_vector (DAT_W-1 downto 0);
 
   
-  function init_table_from_file (file_name : string) return wave_table_t is
+  impure function init_table_from_file (file_name : string) return wave_table_t is
     file table_file    : text open read_mode is file_name;
     variable file_line : line;
     variable table     : wave_table_t;
   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;