----------------------------------------------------------------------
|
----------------------------------------------------------------------
|
---- ----
|
---- ----
|
---- VHDL Wishbone TESTBENCH ----
|
---- VHDL Wishbone TESTBENCH ----
|
---- ----
|
---- ----
|
---- This is a universal type conversion library for VHDL. With ----
|
|
---- the contained overloaded functions conversions from any to ----
|
|
---- any of the following data types are possible: ----
|
|
---- ----
|
|
---- std_logic_vector ----
|
|
---- std_ulogic_vector ----
|
|
---- unsigned ----
|
|
---- signed ----
|
|
---- bit_vector ----
|
|
---- integer ----
|
|
---- string ----
|
|
---- ----
|
|
---- To use them just add the prefix "to_" to the desired result ----
|
|
---- type with the source type in braces. ----
|
|
---- E.g. conversion from integer to std_logic_vector: ----
|
|
---- destination<=to_std_logic_vector(source); ----
|
|
---- ----
|
|
---- This file is part of the vhdl_wb_tb project ----
|
---- This file is part of the vhdl_wb_tb project ----
|
---- http://www.opencores.org/cores/vhdl_wb_tb/ ----
|
---- http://www.opencores.org/cores/vhdl_wb_tb/ ----
|
---- ----
|
---- ----
|
|
---- This file contains some type conversion functions. ----
|
|
---- ----
|
---- To Do: ----
|
---- To Do: ----
|
---- - ----
|
---- - ----
|
---- ----
|
---- ----
|
---- Author(s): ----
|
---- Author(s): ----
|
---- - First & Last Name, email@opencores.org ----
|
---- - Sinx, sinx@opencores.org ----
|
---- ----
|
---- ----
|
----------------------------------------------------------------------
|
----------------------------------------------------------------------
|
-- SVN information
|
---- SVN information
|
--
|
----
|
-- $URL: $
|
---- $URL: $
|
-- $Revision: $
|
---- $Revision: $
|
-- $Date: $
|
---- $Date: $
|
-- $Author: $
|
---- $Author: $
|
-- $Id: $
|
---- $Id: $
|
--
|
|
----------------------------------------------------------------------
|
----------------------------------------------------------------------
|
---- ----
|
---- ----
|
---- Copyright (C) 2018 Authors and OPENCORES.ORG ----
|
---- Copyright (C) 2018 Authors and OPENCORES.ORG ----
|
---- ----
|
---- ----
|
---- This source file may be used and distributed without ----
|
---- This source file may be used and distributed without ----
|
---- restriction provided that this copyright statement is not ----
|
---- restriction provided that this copyright statement is not ----
|
---- removed from the file and that any derivative work contains ----
|
---- removed from the file and that any derivative work contains ----
|
---- the original copyright notice and the associated disclaimer. ----
|
---- the original copyright notice and the associated disclaimer. ----
|
---- ----
|
---- ----
|
---- This source file is free software; you can redistribute it ----
|
---- This source file is free software; you can redistribute it ----
|
---- and/or modify it under the terms of the GNU Lesser General ----
|
---- and/or modify it under the terms of the GNU Lesser General ----
|
---- Public License as published by the Free Software Foundation; ----
|
---- Public License as published by the Free Software Foundation; ----
|
---- either version 2.1 of the License, or (at your option) any ----
|
---- either version 2.1 of the License, or (at your option) any ----
|
---- later version. ----
|
---- later version. ----
|
---- ----
|
---- ----
|
---- This source is distributed in the hope that it will be ----
|
---- This source is distributed in the hope that it will be ----
|
---- useful, but WITHOUT ANY WARRANTY; without even the implied ----
|
---- useful, but WITHOUT ANY WARRANTY; without even the implied ----
|
---- warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ----
|
---- warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ----
|
---- PURPOSE. See the GNU Lesser General Public License for more ----
|
---- PURPOSE. See the GNU Lesser General Public License for more ----
|
---- details. ----
|
---- details. ----
|
---- ----
|
---- ----
|
---- You should have received a copy of the GNU Lesser General ----
|
---- You should have received a copy of the GNU Lesser General ----
|
---- Public License along with this source; if not, download it ----
|
---- Public License along with this source; if not, download it ----
|
---- from http://www.opencores.org/lgpl.shtml ----
|
---- from http://www.opencores.org/lgpl.shtml ----
|
---- ----
|
---- ----
|
----------------------------------------------------------------------
|
----------------------------------------------------------------------
|
--============================================================================
|
-- library -----------------------------------------------------------
|
--============================================================================
|
|
LIBRARY ieee;
|
LIBRARY ieee;
|
USE ieee.std_logic_1164.ALL;
|
USE ieee.std_logic_1164.ALL;
|
USE ieee.std_logic_arith.ALL;
|
USE ieee.std_logic_arith.ALL;
|
--============================================================================
|
|
|
|
|
|
--============================================================================
|
-- package -----------------------------------------------------------
|
PACKAGE convert_pkg IS
|
PACKAGE convert_pkg IS
|
|
|
FUNCTION to_std_logic_vector(input : integer; length : integer) RETURN std_logic_vector;
|
FUNCTION to_std_logic_vector(input : integer; length : integer) RETURN std_logic_vector;
|
|
|
FUNCTION to_integer(input : std_logic_vector) RETURN integer;
|
FUNCTION to_integer(input : std_logic_vector) RETURN integer;
|
FUNCTION to_string(int : integer; base : integer := 10; length : integer := 0) RETURN string;
|
FUNCTION to_string(int : integer; base : integer := 10; length : integer := 0) RETURN string;
|
FUNCTION to_string(slv : std_logic_vector; base : integer; length : integer) RETURN string;
|
FUNCTION to_string(slv : std_logic_vector; base : integer; length : integer) RETURN string;
|
|
|
END convert_pkg;
|
END convert_pkg;
|
--============================================================================
|
|
|
|
--============================================================================
|
-- package body ------------------------------------------------------
|
PACKAGE BODY convert_pkg IS
|
PACKAGE BODY convert_pkg IS
|
--==========================================================================
|
----------------------------------------------------------------------
|
FUNCTION to_std_logic_vector(input : integer; length : integer) RETURN std_logic_vector IS
|
FUNCTION to_std_logic_vector(input : integer; length : integer) RETURN std_logic_vector IS
|
BEGIN
|
BEGIN
|
RETURN std_logic_vector(conv_unsigned(input, length));
|
RETURN std_logic_vector(conv_unsigned(input, length));
|
END;
|
END;
|
|
----------------------------------------------------------------------
|
FUNCTION to_integer(input : std_logic_vector) RETURN integer IS
|
FUNCTION to_integer(input : std_logic_vector) RETURN integer IS
|
BEGIN
|
BEGIN
|
RETURN conv_integer(unsigned(input));
|
RETURN conv_integer(unsigned(input));
|
END;
|
END;
|
|
----------------------------------------------------------------------
|
--==========================================================================
|
|
FUNCTION to_char(int : integer) RETURN character IS
|
FUNCTION to_char(int : integer) RETURN character IS
|
VARIABLE c : character;
|
VARIABLE c : character;
|
BEGIN
|
BEGIN
|
CASE int IS
|
CASE int IS
|
WHEN 0 => c := '0';
|
WHEN 0 => c := '0';
|
WHEN 1 => c := '1';
|
WHEN 1 => c := '1';
|
WHEN 2 => c := '2';
|
WHEN 2 => c := '2';
|
WHEN 3 => c := '3';
|
WHEN 3 => c := '3';
|
WHEN 4 => c := '4';
|
WHEN 4 => c := '4';
|
WHEN 5 => c := '5';
|
WHEN 5 => c := '5';
|
WHEN 6 => c := '6';
|
WHEN 6 => c := '6';
|
WHEN 7 => c := '7';
|
WHEN 7 => c := '7';
|
WHEN 8 => c := '8';
|
WHEN 8 => c := '8';
|
WHEN 9 => c := '9';
|
WHEN 9 => c := '9';
|
WHEN 10 => c := 'A';
|
WHEN 10 => c := 'A';
|
WHEN 11 => c := 'B';
|
WHEN 11 => c := 'B';
|
WHEN 12 => c := 'C';
|
WHEN 12 => c := 'C';
|
WHEN 13 => c := 'D';
|
WHEN 13 => c := 'D';
|
WHEN 14 => c := 'E';
|
WHEN 14 => c := 'E';
|
WHEN 15 => c := 'F';
|
WHEN 15 => c := 'F';
|
WHEN 16 => c := 'G';
|
WHEN 16 => c := 'G';
|
WHEN 17 => c := 'H';
|
WHEN 17 => c := 'H';
|
WHEN 18 => c := 'I';
|
WHEN 18 => c := 'I';
|
WHEN 19 => c := 'J';
|
WHEN 19 => c := 'J';
|
WHEN 20 => c := 'K';
|
WHEN 20 => c := 'K';
|
WHEN 21 => c := 'L';
|
WHEN 21 => c := 'L';
|
WHEN 22 => c := 'M';
|
WHEN 22 => c := 'M';
|
WHEN 23 => c := 'N';
|
WHEN 23 => c := 'N';
|
WHEN 24 => c := 'O';
|
WHEN 24 => c := 'O';
|
WHEN 25 => c := 'P';
|
WHEN 25 => c := 'P';
|
WHEN 26 => c := 'Q';
|
WHEN 26 => c := 'Q';
|
WHEN 27 => c := 'R';
|
WHEN 27 => c := 'R';
|
WHEN 28 => c := 'S';
|
WHEN 28 => c := 'S';
|
WHEN 29 => c := 'T';
|
WHEN 29 => c := 'T';
|
WHEN 30 => c := 'U';
|
WHEN 30 => c := 'U';
|
WHEN 31 => c := 'V';
|
WHEN 31 => c := 'V';
|
WHEN 32 => c := 'W';
|
WHEN 32 => c := 'W';
|
WHEN 33 => c := 'X';
|
WHEN 33 => c := 'X';
|
WHEN 34 => c := 'Y';
|
WHEN 34 => c := 'Y';
|
WHEN 35 => c := 'Z';
|
WHEN 35 => c := 'Z';
|
WHEN OTHERS => c := '?';
|
WHEN OTHERS => c := '?';
|
END CASE;
|
END CASE;
|
RETURN c;
|
RETURN c;
|
END to_char;
|
END to_char;
|
--========================================================================
|
----------------------------------------------------------------------
|
-- convert integer to string using specified base
|
|
-- (adapted from Steve Vogwell's posting in comp.lang.vhdl)
|
|
-- if base=0 convert to 32 bit hex
|
|
FUNCTION to_string(int : integer; base : integer := 10; length : integer := 0) RETURN string IS
|
FUNCTION to_string(int : integer; base : integer := 10; length : integer := 0) RETURN string IS
|
|
|
VARIABLE temp : string(1 TO 1000);
|
VARIABLE temp : string(1 TO 1000);
|
VARIABLE num : integer;
|
VARIABLE num : integer;
|
VARIABLE abs_int : integer;
|
VARIABLE abs_int : integer;
|
VARIABLE len : integer := 1;
|
VARIABLE len : integer := 1;
|
VARIABLE power : integer := 1;
|
VARIABLE power : integer := 1;
|
|
|
BEGIN
|
BEGIN
|
abs_int := ABS(int);
|
abs_int := ABS(int);
|
num := abs_int;
|
num := abs_int;
|
--
|
--
|
IF (length = 0) THEN -- automatic length detection
|
IF (length = 0) THEN -- automatic length detection
|
WHILE num >= base LOOP -- Determine how many
|
WHILE num >= base LOOP -- Determine how many
|
len := len + 1; -- characters required
|
len := len + 1; -- characters required
|
num := num / base; -- to represent the
|
num := num / base; -- to represent the
|
END LOOP; -- number.
|
END LOOP; -- number.
|
ELSE
|
ELSE
|
len := ABS(length); --
|
len := ABS(length); --
|
END IF;
|
END IF;
|
|
|
IF (base /= 10) THEN
|
IF (base /= 10) THEN
|
len := len + (len-1) / 4; -- increase for underlines
|
len := len + (len-1) / 4; -- increase for underlines
|
END IF;
|
END IF;
|
--
|
--
|
FOR i IN len DOWNTO 1 LOOP -- Convert the number to
|
FOR i IN len DOWNTO 1 LOOP -- Convert the number to
|
IF (((len-i) MOD 5 = 4) AND (base /= 10)) THEN -- every fith char shell be an underline
|
IF (((len-i) MOD 5 = 4) AND (base /= 10)) THEN -- every fith char shell be an underline
|
temp(i) := '_';
|
temp(i) := '_';
|
ELSE
|
ELSE
|
temp(i) := to_char(abs_int/power MOD base); -- a string starting
|
temp(i) := to_char(abs_int/power MOD base); -- a string starting
|
power := power * base; -- with the right hand
|
power := power * base; -- with the right hand
|
END IF;
|
END IF;
|
END LOOP; -- side.
|
END LOOP; -- side.
|
--
|
--
|
-- return result and add sign if required
|
-- return result and add sign if required
|
IF (base = 16) THEN
|
IF (base = 16) THEN
|
IF (int < 0) THEN
|
IF (int < 0) THEN
|
CASE temp(len) IS
|
CASE temp(len) IS
|
WHEN '0' => temp(len) := 'F';
|
WHEN '0' => temp(len) := 'F';
|
WHEN '1' => temp(len) := '0';
|
WHEN '1' => temp(len) := '0';
|
WHEN '2' => temp(len) := '1';
|
WHEN '2' => temp(len) := '1';
|
WHEN '3' => temp(len) := '2';
|
WHEN '3' => temp(len) := '2';
|
WHEN '4' => temp(len) := '3';
|
WHEN '4' => temp(len) := '3';
|
WHEN '5' => temp(len) := '4';
|
WHEN '5' => temp(len) := '4';
|
WHEN '6' => temp(len) := '5';
|
WHEN '6' => temp(len) := '5';
|
WHEN '7' => temp(len) := '6';
|
WHEN '7' => temp(len) := '6';
|
WHEN '8' => temp(len) := '7';
|
WHEN '8' => temp(len) := '7';
|
WHEN '9' => temp(len) := '8';
|
WHEN '9' => temp(len) := '8';
|
WHEN 'A' => temp(len) := '9';
|
WHEN 'A' => temp(len) := '9';
|
WHEN 'B' => temp(len) := 'A';
|
WHEN 'B' => temp(len) := 'A';
|
WHEN 'C' => temp(len) := 'B';
|
WHEN 'C' => temp(len) := 'B';
|
WHEN 'D' => temp(len) := 'C';
|
WHEN 'D' => temp(len) := 'C';
|
WHEN 'E' => temp(len) := 'D';
|
WHEN 'E' => temp(len) := 'D';
|
WHEN 'F' => temp(len) := 'E';
|
WHEN 'F' => temp(len) := 'E';
|
WHEN OTHERS => NULL;
|
WHEN OTHERS => NULL;
|
END CASE;
|
END CASE;
|
FOR i IN len DOWNTO 1 LOOP
|
FOR i IN len DOWNTO 1 LOOP
|
CASE temp(i) IS
|
CASE temp(i) IS
|
WHEN '0' => temp(i) := 'F';
|
WHEN '0' => temp(i) := 'F';
|
WHEN '1' => temp(i) := 'E';
|
WHEN '1' => temp(i) := 'E';
|
WHEN '2' => temp(i) := 'D';
|
WHEN '2' => temp(i) := 'D';
|
WHEN '3' => temp(i) := 'C';
|
WHEN '3' => temp(i) := 'C';
|
WHEN '4' => temp(i) := 'B';
|
WHEN '4' => temp(i) := 'B';
|
WHEN '5' => temp(i) := 'A';
|
WHEN '5' => temp(i) := 'A';
|
WHEN '6' => temp(i) := '9';
|
WHEN '6' => temp(i) := '9';
|
WHEN '7' => temp(i) := '8';
|
WHEN '7' => temp(i) := '8';
|
WHEN '8' => temp(i) := '7';
|
WHEN '8' => temp(i) := '7';
|
WHEN '9' => temp(i) := '6';
|
WHEN '9' => temp(i) := '6';
|
WHEN 'A' => temp(i) := '5';
|
WHEN 'A' => temp(i) := '5';
|
WHEN 'B' => temp(i) := '4';
|
WHEN 'B' => temp(i) := '4';
|
WHEN 'C' => temp(i) := '3';
|
WHEN 'C' => temp(i) := '3';
|
WHEN 'D' => temp(i) := '2';
|
WHEN 'D' => temp(i) := '2';
|
WHEN 'E' => temp(i) := '1';
|
WHEN 'E' => temp(i) := '1';
|
WHEN 'F' => temp(i) := '0';
|
WHEN 'F' => temp(i) := '0';
|
WHEN OTHERS => NULL;
|
WHEN OTHERS => NULL;
|
END CASE;
|
END CASE;
|
END LOOP; -- i
|
END LOOP; -- i
|
END IF;
|
END IF;
|
RETURN temp(1 TO len);
|
RETURN temp(1 TO len);
|
ELSE
|
ELSE
|
IF (int < 0) THEN
|
IF (int < 0) THEN
|
RETURN '-'& temp(1 TO len);
|
RETURN '-'& temp(1 TO len);
|
ELSE
|
ELSE
|
RETURN temp(1 TO len);
|
RETURN temp(1 TO len);
|
END IF;
|
END IF;
|
END IF;
|
END IF;
|
END to_string;
|
END to_string;
|
|
----------------------------------------------------------------------
|
--========================================================================
|
|
FUNCTION to_string(slv : std_logic_vector) RETURN string IS
|
FUNCTION to_string(slv : std_logic_vector) RETURN string IS
|
|
|
VARIABLE hexlen : integer;
|
VARIABLE hexlen : integer;
|
VARIABLE longslv : std_logic_vector(131 DOWNTO 0) := (OTHERS => '0');
|
VARIABLE longslv : std_logic_vector(131 DOWNTO 0) := (OTHERS => '0');
|
VARIABLE hex : string(1 TO 32);
|
VARIABLE hex : string(1 TO 32);
|
VARIABLE fourbit : std_logic_vector(3 DOWNTO 0);
|
VARIABLE fourbit : std_logic_vector(3 DOWNTO 0);
|
|
|
BEGIN
|
BEGIN
|
hexlen := ((slv'high - slv'low) + 1) / 4;
|
hexlen := ((slv'high - slv'low) + 1) / 4;
|
IF (((slv'high - slv'low) + 1) MOD 4 /= 0) THEN
|
IF (((slv'high - slv'low) + 1) MOD 4 /= 0) THEN
|
hexlen := hexlen + 1;
|
hexlen := hexlen + 1;
|
END IF;
|
END IF;
|
--
|
--
|
longslv((slv'high - slv'low) DOWNTO 0) := slv;
|
longslv((slv'high - slv'low) DOWNTO 0) := slv;
|
--
|
--
|
FOR i IN (hexlen -1) DOWNTO 0 LOOP
|
FOR i IN (hexlen -1) DOWNTO 0 LOOP
|
fourbit := longslv(((i*4)+3) DOWNTO (i*4));
|
fourbit := longslv(((i*4)+3) DOWNTO (i*4));
|
CASE fourbit IS
|
CASE fourbit IS
|
WHEN "0000" => hex(hexlen -I) := '0';
|
WHEN "0000" => hex(hexlen -I) := '0';
|
WHEN "0001" => hex(hexlen -I) := '1';
|
WHEN "0001" => hex(hexlen -I) := '1';
|
WHEN "0010" => hex(hexlen -I) := '2';
|
WHEN "0010" => hex(hexlen -I) := '2';
|
WHEN "0011" => hex(hexlen -I) := '3';
|
WHEN "0011" => hex(hexlen -I) := '3';
|
WHEN "0100" => hex(hexlen -I) := '4';
|
WHEN "0100" => hex(hexlen -I) := '4';
|
WHEN "0101" => hex(hexlen -I) := '5';
|
WHEN "0101" => hex(hexlen -I) := '5';
|
WHEN "0110" => hex(hexlen -I) := '6';
|
WHEN "0110" => hex(hexlen -I) := '6';
|
WHEN "0111" => hex(hexlen -I) := '7';
|
WHEN "0111" => hex(hexlen -I) := '7';
|
WHEN "1000" => hex(hexlen -I) := '8';
|
WHEN "1000" => hex(hexlen -I) := '8';
|
WHEN "1001" => hex(hexlen -I) := '9';
|
WHEN "1001" => hex(hexlen -I) := '9';
|
WHEN "1010" => hex(hexlen -I) := 'A';
|
WHEN "1010" => hex(hexlen -I) := 'A';
|
WHEN "1011" => hex(hexlen -I) := 'B';
|
WHEN "1011" => hex(hexlen -I) := 'B';
|
WHEN "1100" => hex(hexlen -I) := 'C';
|
WHEN "1100" => hex(hexlen -I) := 'C';
|
WHEN "1101" => hex(hexlen -I) := 'D';
|
WHEN "1101" => hex(hexlen -I) := 'D';
|
WHEN "1110" => hex(hexlen -I) := 'E';
|
WHEN "1110" => hex(hexlen -I) := 'E';
|
WHEN "1111" => hex(hexlen -I) := 'F';
|
WHEN "1111" => hex(hexlen -I) := 'F';
|
WHEN "ZZZZ" => hex(hexlen -I) := 'z';
|
WHEN "ZZZZ" => hex(hexlen -I) := 'z';
|
WHEN "UUUU" => hex(hexlen -I) := 'u';
|
WHEN "UUUU" => hex(hexlen -I) := 'u';
|
WHEN "XXXX" => hex(hexlen -I) := 'x';
|
WHEN "XXXX" => hex(hexlen -I) := 'x';
|
WHEN OTHERS => hex(hexlen -I) := '?';
|
WHEN OTHERS => hex(hexlen -I) := '?';
|
END CASE;
|
END CASE;
|
END LOOP;
|
END LOOP;
|
RETURN hex(1 TO hexlen);
|
RETURN hex(1 TO hexlen);
|
END to_string;
|
END to_string;
|
|
----------------------------------------------------------------------
|
--========================================================================
|
|
FUNCTION to_string(slv : std_logic_vector; base : integer; length : integer) RETURN string IS
|
FUNCTION to_string(slv : std_logic_vector; base : integer; length : integer) RETURN string IS
|
|
|
BEGIN
|
BEGIN
|
RETURN to_string(to_integer(slv), base, length);
|
RETURN to_string(to_integer(slv), base, length);
|
END to_string;
|
END to_string;
|
|
----------------------------------------------------------------------
|
end package body;
|
end package body;
|
----------------------------------------------------------------------
|
----------------------------------------------------------------------
|
---- end of file ----
|
---- end of file ----
|
|
|