test: Add STATUS[RXNE] feature test.

test/feature/status_rxne_feature_tb.vhd

+--------------------------------------------------------------------------------
+-- 
+-- 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.
+-- 
+--------------------------------------------------------------------------------
+
+--------------------------------------------------------------------------------
+-- Purpose:
+--  STATUS[RXNE] feature test.
+--
+-- Verifies:
+--  1. When no frame is stored in RX Buffer, STATUS[RXNE] is not set.
+--  2. When one or more frames is stored in RX Buffer, STATUS[RXNE] is set.
+--  3. STATUS[RXNE] is not set when last word of last frame in RX Buffer is
+--     read.
+--
+-- Test sequence:
+--  1. Read STATUS[RXNE] of Node 1 and check it is not set. Send random amount
+--     of CAN frames by Node 2 and wait until they are received. Check that
+--     after each one, STATUS[RXNE] is set.
+--  2. Read out frame by frame and check that STATUS[RXNE] is still set. Read
+--     all frames but last one.
+--  3. Read out last frame word by word and check that STATUS[RXNE] is still
+--     set and STATUS[RXNE] is not set after reading out last word.
+--------------------------------------------------------------------------------
+-- Revision History:
+--    31.10.2019   Created file
+--------------------------------------------------------------------------------
+
+context work.ctu_can_synth_context;
+context work.ctu_can_test_context;
+
+use lib.pkg_feature_exec_dispath.all;
+
+package status_rxne_feature is
+    procedure status_rxne_feature_exec(
+        variable    o               : out    feature_outputs_t;
+        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 status_rxne_feature is
+    procedure status_rxne_feature_exec(
+        variable    o               : out    feature_outputs_t;
+        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 rand_value         :       real;
+        variable alc                :       natural;
+
+        -- Some unit lost the arbitration...
+        -- 0 - initial , 1-Node 1 turned rec, 2 - Node 2 turned rec
+        variable unit_rec           :     natural := 0;
+
+        variable ID_1               :     natural := 1;
+        variable ID_2               :     natural := 2;
+        variable r_data             :     std_logic_vector(31 downto 0) :=
+                                               (OTHERS => '0');
+        -- Generated frames
+        variable frame_1            :     SW_CAN_frame_type;
+        variable frame_2            :     SW_CAN_frame_type;
+        variable frame_rx           :     SW_CAN_frame_type;
+
+        -- Node status
+        variable stat_1             :     SW_status;
+        variable stat_2             :     SW_status;
+
+        variable pc_dbg             :     SW_PC_Debug;
+        
+        variable txt_buf_state      :     SW_TXT_Buffer_state_type;
+        variable rx_buf_info        :     SW_RX_Buffer_info;
+        variable frames_equal       :     boolean := false;        
+
+        variable id_vect            :     std_logic_vector(28 downto 0);
+        variable command            :     SW_command := SW_command_rst_val;
+        
+        variable num_frames         :     integer;
+    begin
+        o.outcome := true;
+
+        -----------------------------------------------------------------------
+        --  1. Read STATUS[RXNE] of Node 1 and check it is not set. Send
+        --     random amount of CAN frames by Node 2 and wait until they are
+        --     received. Check that after each one, STATUS[RXNE] is set.
+        -----------------------------------------------------------------------
+        info("Step 1");
+        get_controller_status(stat_1, ID_1, mem_bus(1));
+        check_false(stat_1.receive_buffer, "RX Buffer empty");
+        
+        rand_int_v(rand_ctr, 6, num_frames);
+        num_frames := num_frames + 1;
+        
+        CAN_generate_frame(rand_ctr, frame_1);
+        frame_1.rtr := RTR_FRAME;
+        frame_1.frame_format := NORMAL_CAN;
+        CAN_insert_TX_frame(frame_1, 1, ID_2, mem_bus(2));
+        
+        for i in 0 to num_frames - 1 loop
+            send_TXT_buf_cmd(buf_set_ready, 1, ID_2, mem_bus(2));
+            CAN_wait_frame_sent(ID_1, mem_bus(1));
+            
+            get_controller_status(stat_1, ID_1, mem_bus(1));
+            check(stat_1.receive_buffer, "RX Buffer not empty");
+        end loop;
+
+        -----------------------------------------------------------------------
+        --  2. Read out frame by frame and check that STATUS[RXNE] is still set.
+        --     Read all frames but last one.
+        -----------------------------------------------------------------------
+        info("Step 2");
+        for i in 0 to num_frames - 2 loop
+            CAN_read_frame(frame_rx, ID_1, mem_bus(1));
+            get_controller_status(stat_1, ID_1, mem_bus(1));
+            check(stat_1.receive_buffer, "RX Buffer not empty");
+        end loop;
+        
+        -----------------------------------------------------------------------
+        --  3. Read out last frame word by word and check that STATUS[RXNE] is
+        --     still set and STATUS[RXNE] is not set after reading out last
+        --     word.
+        -----------------------------------------------------------------------
+        for i in 0 to 3 loop -- RTR frame has 4 words in RX Buffer
+            CAN_read(r_data, RX_DATA_ADR, ID_1, mem_bus(1));
+            get_controller_status(stat_1, ID_1, mem_bus(1));
+            
+            if (i = 3) then
+                check_false(stat_1.receive_buffer,
+                    "STATUS[RXNE] not set after last word was read out!");
+            else
+                check(stat_1.receive_buffer,
+                    "STATUS[RXNE] set before last word was read out!");
+            end if;
+        end loop;
+        
+        wait for 100 ns;
+
+  end procedure;
+
+end package body;

test/tests_fast.yml

@@ -82,6 +82,7 @@ feature:
         rx_buf_empty_read:
         tx_counter:
         rx_counter:
+        status_rxne:
         # tran_delay:
         tx_arb_time_tran:
         # timestamp_options:

test/tests_nightly.yml

@@ -110,6 +110,7 @@ feature:
         rx_buf_empty_read:
         tx_counter:
         rx_counter:
+        status_rxne:
         # tran_delay:
         tx_arb_time_tran:
         # timestamp_options: