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Commit bbe2eb29 authored by Ille, Ondrej, Ing.'s avatar Ille, Ondrej, Ing.
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Added seed to CAN test entity. Seed set externally. 

Random pool pointer manipulated internally in the
test.
parent 4415494c
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Showing with 56 additions and 23 deletions
test/lib/CANtestLib.vhd
View file @ bbe2eb29
......@@ -579,6 +579,22 @@ package CANtestLib is
);
----------------------------------------------------------------------------
-- Sets random counter based on the seed that was given. To differentiate
-- individual counters, fixed offset can be added.
--
-- Arguments:
-- seed Random seed input.
-- offset Offset of counter
-- rand_ctr Random counter to set.
----------------------------------------------------------------------------
procedure apply_rand_seed(
constant seed : in natural;
constant offset : in natural;
signal rand_ctr : out natural range 0 to RAND_POOL_SIZE
);
----------------------------------------------------------------------------
-- Decode data length code from value as defined in CAN FD Standard to
-- length of frame in bytes.
......@@ -1349,6 +1365,9 @@ package CANtestLib is
----------------------------------------------------------------------------
----------------------------------------------------------------------------
component CAN_test is
generic (
constant seed :in natural := 0
);
port (
signal run :in boolean;
signal iterations :in natural;
......@@ -1554,6 +1573,19 @@ package body CANtestLib is
end;
procedure apply_rand_seed(
constant seed : in natural;
constant offset : in natural;
signal rand_ctr : out natural range 0 to RAND_POOL_SIZE
)is
variable tmp : natural;
begin
tmp := seed + offset;
rand_ctr <= tmp mod RAND_POOL_SIZE;
wait for 0 ns;
end procedure;
procedure decode_dlc(
signal dlc : in std_logic_vector(3 downto 0);
variable length : out natural
......@@ -3254,36 +3286,37 @@ end package body;
USE work.CANtestLib.All;
-------------------------------------------------------------
-- Main test entity. Each test of the unit test environment
-- implements architecture of this entity!
-------------------------------------------------------------
--------------------------------------------------------------------------------
-- Main test entity. Each test implements architecture of this entity.
--------------------------------------------------------------------------------
entity CAN_test is
port (
generic (
constant seed :in natural := 0
);
port (
-- Input trigger, test starts running when true
signal run :in boolean;
-- Input trigger, test starts running when true
signal run :in boolean;
-- Number of iterations that test should do
signal iterations :in natural;
-- Number of iterations that test should do
signal iterations :in natural;
-- Logging level, severity which should be shown
signal log_level :in log_lvl_type;
-- Logging level, severity which should be shown
signal log_level :in log_lvl_type;
-- Test behaviour when error occurs: Quit, or Go on
signal error_beh :in err_beh_type;
-- Test behaviour when error occurs: Quit, or Go on
signal error_beh :in err_beh_type;
-- Error tolerance, error counter should not
-- exceed this value in order for the test to pass
signal error_tol :in natural;
-- Status of the test
signal status :out test_status_type;
-- Error tolerance, error counter should not
-- exceed this value in order for the test to pass
signal error_tol :in natural;
-- Status of the test
signal status :out test_status_type;
-- Amount of errors which appeared in the test
signal errors :out natural
--TODO: Error log results
);
-- Amount of errors which appeared in the test
signal errors :out natural
);
--Internal test signals
signal error_ctr : natural := 0;
......
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