[tb/wrpc] added comments

b3171f4a · Maciej Lipinski · Grzegorz Daniluk · cee4859b · b3171f4a
Commit b3171f4a authored Feb 13, 2017 by Maciej Lipinski Committed by Grzegorz Daniluk Feb 14, 2017
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main.sv testbench/wrc_core/main.sv +5 -5

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--- a/testbench/wrc_core/main.sv
+++ b/testbench/wrc_core/main.sv
@@ -339,9 +339,8 @@ module main;
  assign phy_tx_enc_err    = 0;
  assign phy_rx_enc_err    = 0;

-  

-  initial begin
+  initial begin ///configure EP of the testbench and send test-frame

    CSimDrv_WR_Endpoint ep_drv;
    uint64_t val;
@@ -386,14 +385,15 @@ module main;

    #1400us;
    $display("Fixed IFG");
-    send_frames(ep_src, frame_number, 1);
+    send_frames(ep_src, frame_number, 1 /* force Inter-frame gap of 1 us */);
    $display("Random IFG");
-    send_frames(ep_src, frame_number);
+    send_frames(ep_src, frame_number, 0 /* random Inter-frame gap, between 1 and 100us */);


  end

-  initial begin
+  initial begin /// receive frames from WRPC (looped back or sent by LM32), loopback frames
+                /// sent from LM32
    EthPacket pkt;
    mac_addr_t PTP_MAC='{'h01,'h1b,'h19,'h00,'h00,'h00};
    mac_addr_t SELF_MAC='{'h22,'h33,'h44,'h44,'h55,'h66};