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library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use work.csv_file_reader_pkg.all;
-- csv file should be in format
-- sync period,v1hexvalue,v2integervalue,v3hexvalue,comment
-- eg 123445,AD45,234,F00D,"test line, for crash example"
--
entity crashExample is
port (
vctrFlNm : in string;
fEnd : out boolean;
syncCount : out integer;
syncPulse : out std_logic;
v1 : out std_logic_vector(15 downto 0);
v2 : out std_logic_vector(15 downto 0);
v3 : out std_logic_vector(15 downto 0);
vctrCmt : out string
);
end entity crashExample;
architecture BEHAVIORAL of crashExample is
signal commentString : string(1 to LINE_LENGTH_MAX);
signal syncCntInt : integer;
constant SYN_PLSE_PRD : time := 4000 ns;
begin
-- comment map
vctrCmt <= commentString;
-- Vector Process
prcs_VctrRead : process
variable csv : csv_file_reader_type;
variable syncPeriod : time;
begin
-- initialse end flag
fEnd <= false;
-- open file
csv.initialize(vctrFlNm);
-- read first line of file which should be a comment
csv.readline;
-- initalise variables/signals
syncCntInt <= 0;
-- while (not end of file)
while not csv.end_of_file loop
-- read information until next SYN command is found
csv.readline;
-- read Sync period
syncPeriod := csv.read_integer * 1 ns;
-- read Hex integer
v1 <= std_logic_vector(to_unsigned(csv.read_hex, v1'length));
-- read normal integer
v2 <= std_logic_vector(to_unsigned(csv.read_integer, v2'length));
-- read Hex integer
v3 <= std_logic_vector(to_unsigned(csv.read_hex, v3'length));
-- read String comment
commentString <= csv.read_string;
-- Make sync pulse
syncPulse <= '1';
syncCount <= syncCntInt;
wait for SYN_PLSE_PRD;
syncPulse <= '0';
-- wait for the sync period
wait for (syncPeriod - SYN_PLSE_PRD);
syncCntInt <= syncCntInt + 1;
end loop;
fEnd <= true;
wait; -- end simulation
end process prcs_VctrRead;
end BEHAVIORAL;
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