Commit 49080ba5 authored by Ille, Ondrej, Ing.'s avatar Ille, Ondrej, Ing.

test: Add ACK Error ERR_CAPT feature test.

parent e92e158b
--------------------------------------------------------------------------------
--
-- CTU CAN FD IP Core
-- Copyright (C) 2015-2018
--
-- Authors:
-- Ondrej Ille <ondrej.ille@gmail.com>
-- Martin Jerabek <martin.jerabek01@gmail.com>
--
-- Project advisors:
-- Jiri Novak <jnovak@fel.cvut.cz>
-- Pavel Pisa <pisa@cmp.felk.cvut.cz>
--
-- Department of Measurement (http://meas.fel.cvut.cz/)
-- Faculty of Electrical Engineering (http://www.fel.cvut.cz)
-- Czech Technical University (http://www.cvut.cz/)
--
-- Permission is hereby granted, free of charge, to any person obtaining a copy
-- of this VHDL component and associated documentation files (the "Component"),
-- to deal in the Component without restriction, including without limitation
-- the rights to use, copy, modify, merge, publish, distribute, sublicense,
-- and/or sell copies of the Component, and to permit persons to whom the
-- Component is furnished to do so, subject to the following conditions:
--
-- The above copyright notice and this permission notice shall be included in
-- all copies or substantial portions of the Component.
--
-- THE COMPONENT IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-- AUTHORS OR COPYRIGHTHOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-- FROM, OUT OF OR IN CONNECTION WITH THE COMPONENT OR THE USE OR OTHER DEALINGS
-- IN THE COMPONENT.
--
-- The CAN protocol is developed by Robert Bosch GmbH and protected by patents.
-- Anybody who wants to implement this IP core on silicon has to obtain a CAN
-- protocol license from Bosch.
--
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
-- @TestInfoStart
--
-- @Purpose:
-- ERR_CAPT[ERR_POS] = ERC_POS_ACK, ack error feature test.
--
-- @Verifies:
-- @1. Detection of ACK error in ACK slot (when dominant ACK was not send).
-- Value of ERR_CAPT[ERR_POS] when ACK error should have been detected in
-- ACK field.
--
-- @Test sequence:
-- @1. Check that ERR_CAPT contains no error (post reset).
-- @2. Configure Node 2 to ACK forbidden mode. Generate frame (use CAN 2.0
-- not to extend ACK field) and send it by Node 1. Wait until ACK field and
-- monitor that it is recessive during whole duration of ACK field. Wait
-- until Sample point and check that after it, error frame is transmitted
-- by Node 1. Check that ERR_CAPT register signals ACK Error in ACK field.
--
-- @TestInfoEnd
--------------------------------------------------------------------------------
-- Revision History:
-- 12.01.2020 Created file
--------------------------------------------------------------------------------
context work.ctu_can_synth_context;
context work.ctu_can_test_context;
use lib.pkg_feature_exec_dispath.all;
package err_capt_ack_ack_feature is
procedure err_capt_ack_ack_feature_exec(
signal so : out feature_signal_outputs_t;
signal rand_ctr : inout natural range 0 to RAND_POOL_SIZE;
signal iout : in instance_outputs_arr_t;
signal mem_bus : inout mem_bus_arr_t;
signal bus_level : in std_logic
);
end package;
package body err_capt_ack_ack_feature is
procedure err_capt_ack_ack_feature_exec(
signal so : out feature_signal_outputs_t;
signal rand_ctr : inout natural range 0 to RAND_POOL_SIZE;
signal iout : in instance_outputs_arr_t;
signal mem_bus : inout mem_bus_arr_t;
signal bus_level : in std_logic
) is
variable ID_1 : natural := 1;
variable ID_2 : natural := 2;
-- Generated frames
variable frame_1 : SW_CAN_frame_type;
-- Node status
variable stat_1 : SW_status;
variable pc_dbg : SW_PC_Debug;
variable frame_sent : boolean;
variable err_capt : SW_error_capture;
variable mode_2 : SW_mode := SW_mode_rst_val;
begin
-----------------------------------------------------------------------
-- @1. Check that ERR_CAPT contains no error (post reset).
-----------------------------------------------------------------------
info("Step 1");
CAN_read_error_code_capture(err_capt, ID_1, mem_bus(1));
check(err_capt.err_pos = err_pos_other, "Reset of ERR_CAPT!");
-----------------------------------------------------------------------
-- @2. Configure Node 2 to ACK forbidden mode. Generate frame (use CAN
-- 2.0 not to extend ACK field) and send it by Node 1. Wait until
-- ACK field and monitor that it is recessive during whole duration
-- of ACK field. Wait until Sample point and check that after it,
-- error frame is transmitted by Node 1. Check that ERR_CAPT
-- register signals ACK Error in ACK field.
-----------------------------------------------------------------------
info("Step 2");
mode_2.acknowledge_forbidden := true;
set_core_mode(mode_2, ID_2, mem_bus(2));
CAN_generate_frame(rand_ctr, frame_1);
frame_1.frame_format := NORMAL_CAN;
CAN_send_frame(frame_1, 1, ID_1, mem_bus(1), frame_sent);
CAN_wait_pc_state(pc_deb_ack, ID_1, mem_bus(1));
CAN_read_pc_debug(pc_dbg, ID_1, mem_bus(1));
while (pc_dbg = pc_deb_ack) loop
check(iout(1).CAN_rx = RECESSIVE, "Recessive ACK received in Node 1!");
CAN_read_pc_debug(pc_dbg, ID_1, mem_bus(1));
end loop;
-- Now state has changed, we should be in Error frame because ACK was
-- recessive
get_controller_status(stat_1, ID_1, mem_bus(1));
check(stat_1.error_transmission, "Error frame transmitted by Node 1!");
release_bus_level(so.bl_force);
CAN_read_error_code_capture(err_capt, ID_1, mem_bus(1));
check(err_capt.err_type = can_err_ack, "ACK error detected!");
check(err_capt.err_pos = err_pos_ack, "Error detected in ACK field!");
CAN_wait_bus_idle(ID_1, mem_bus(1));
CAN_wait_bus_idle(ID_2, mem_bus(2));
wait for 100 ns;
end procedure;
end package body;
......@@ -62,6 +62,7 @@ feature:
command_frcrst:
device_id:
dlc_can20_8_64_bytes:
err_capt_ack_ack:
err_capt_arb_bit:
err_capt_arb_stuff:
err_capt_crc_bit:
......
......@@ -93,6 +93,7 @@ feature:
command_frcrst:
device_id:
dlc_can20_8_64_bytes:
err_capt_ack_ack:
err_capt_arb_bit:
err_capt_arb_stuff:
err_capt_crc_bit:
......
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