From cf64718b783a70a4f7b606b6fabc27a4bee9bd82 Mon Sep 17 00:00:00 2001
From: Eric Kooistra <kooistra@astron.nl>
Date: Tue, 10 Mar 2020 17:42:25 +0100
Subject: [PATCH] Use c_crc_sz = 4 for CRC size in octets instead of hardcoded
4.
---
libraries/technology/tse/sim_tse.vhd | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/libraries/technology/tse/sim_tse.vhd b/libraries/technology/tse/sim_tse.vhd
index 6b63301617..425729e11a 100644
--- a/libraries/technology/tse/sim_tse.vhd
+++ b/libraries/technology/tse/sim_tse.vhd
@@ -84,6 +84,8 @@ END sim_tse;
ARCHITECTURE str OF sim_tse IS
+ CONSTANT c_crc_sz : NATURAL := 4; -- CRC word has 4 octets
+
SIGNAL tr_clk : STD_LOGIC;
SIGNAL tr_rst : STD_LOGIC;
@@ -95,7 +97,7 @@ ARCHITECTURE str OF sim_tse IS
TYPE t_reg IS RECORD
crc_sosi : t_dp_sosi;
- crc_cnt : NATURAL RANGE 0 TO 4;
+ crc_cnt : NATURAL RANGE 0 TO c_crc_sz;
END RECORD;
SIGNAL crc_siso : t_dp_siso := c_dp_siso_hold;
@@ -189,7 +191,7 @@ BEGIN
-- start with tx_fifo_sosi packet
tx_pkt_sosi <= tx_fifo_sosi;
-- append CRC = 0 at end of tx_fifo_sosi packet
- IF r.crc_sosi.valid='1' THEN
+ IF r.crc_sosi.valid = '1' THEN
tx_pkt_sosi.data <= TO_DP_DATA(0);
END IF;
tx_pkt_sosi.valid <= tx_fifo_sosi.valid OR r.crc_sosi.valid;
@@ -203,17 +205,17 @@ BEGIN
v := r;
v.crc_sosi.valid := '0';
v.crc_sosi.eop := '0';
- IF tx_fifo_sosi.eop='1' THEN
+ IF tx_fifo_sosi.eop = '1' THEN
crc_siso.ready <= '0';
v.crc_sosi.valid := '1';
v.crc_cnt := 1;
END IF;
- IF r.crc_cnt>0 THEN
+ IF r.crc_cnt > 0 THEN
crc_siso.ready <= '0';
v.crc_sosi.valid := '1';
v.crc_cnt := r.crc_cnt + 1;
END IF;
- IF r.crc_cnt=3 THEN
+ IF r.crc_cnt = c_crc_sz-1 THEN
v.crc_sosi.eop := '1';
v.crc_cnt := 0;
END IF;
@@ -222,7 +224,7 @@ BEGIN
p_crc_reg : PROCESS(tr_rst, tr_clk)
BEGIN
- IF tr_rst='1' THEN
+ IF tr_rst = '1' THEN
r <= (c_dp_sosi_rst, 0);
ELSIF rising_edge(tr_clk) THEN
r <= nxt_r;
--
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