From 8dcf412e9d67993150aaa30be5d16b63e4dcf5f1 Mon Sep 17 00:00:00 2001
From: Reinier van der Walle <walle@astron.nl>
Date: Tue, 28 Sep 2021 15:20:56 +0200
Subject: [PATCH] added comment
---
.../lofar2/libraries/sdp/src/vhdl/sdp_statistics_offload.vhd | 2 ++
1 file changed, 2 insertions(+)
diff --git a/applications/lofar2/libraries/sdp/src/vhdl/sdp_statistics_offload.vhd b/applications/lofar2/libraries/sdp/src/vhdl/sdp_statistics_offload.vhd
index 202357ec78..e756819c79 100644
--- a/applications/lofar2/libraries/sdp/src/vhdl/sdp_statistics_offload.vhd
+++ b/applications/lofar2/libraries/sdp/src/vhdl/sdp_statistics_offload.vhd
@@ -249,6 +249,7 @@ BEGIN
-- Use done to start next packets
IF r.block_count < c_nof_packets-1 THEN
IF g_statistics_type /= "XST" OR r.crosslet_count < r.nof_crosslets-1 THEN
+ -- For SST, BST and for XST nof_crosslets do:
IF r.block_count MOD c_nof_data_per_step = 0 THEN
v.start_address := r.block_count / c_nof_data_per_step * c_block_size; -- jump to first packet in next block
ELSE
@@ -258,6 +259,7 @@ BEGIN
v.block_count := r.block_count + 1;
v.crosslet_count := r.crosslet_count + 1;
ELSE
+ -- For XST after nof_crosslets do:
v.crosslet_count := 0;
-- skip block indices for unused XST blocks in this P_sq iteration by setting the block count to the next multiple of N_crosslets_max i.e. 7, 14, 21, etc.
v.block_count := r.block_count + 1 + (c_sdp_N_crosslets_max - r.nof_crosslets);
--
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