Update scalp_firmware for testing.

designs/vivado/scalp_firmware/2020.2/src/hdl/scalp_firmware.vhd

@@ -872,7 +872,7 @@ begin
 
             -- type t_write_sp_states is (E_WR_SP_IDLE, E_WR_SP_VALID, E_WR_SP_WAIT);
 
-            type t_write_sp_states is (E_WR_SP_IDLE, E_WR_SP_VALID_0, E_WR_SP_UNVALID_0, E_WR_SP_VALID_1, E_WR_SP_WAIT);
+            type t_write_sp_states is (E_WR_SP_IDLE, E_WR_SP_VALID_0, E_WR_SP_LAST, E_WR_SP_VALID_1, E_WR_SP_WAIT);
 
             signal ScalpRouterResetxRNA : std_ulogic := '0';
             -- Scalp Packets
@@ -1133,7 +1133,8 @@ begin
                     end if;
                 end process UpdateRegxP;
 
-                SpValidxP : process (VioWrSpValidxS, WrSPStatexDP) is
+                SpValidxP : process (RXAxism2sVectorxD(C_LOCAL_IF_ID).LastxS,
+                                     VioWrSpValidxS, WrSPStatexDP) is
                 begin  -- process SpValidxP
                     -- Default values
                     WrSPStatexDN         <= WrSPStatexDP;
@@ -1145,46 +1146,26 @@ begin
                                     ScalpPacketValid12xS <= '1';
                                     WrSPStatexDN         <= E_WR_SP_VALID_0;
                                 end if;
+
                         when E_WR_SP_VALID_0 =>
                                 ScalpPacketValid12xS <= '0';
-                                WrSPStatexDN         <= E_WR_SP_UNVALID_0;
+                                WrSPStatexDN         <= E_WR_SP_LAST;
 
-                        when E_WR_SP_UNVALID_0 =>
+                        when E_WR_SP_LAST =>
+                                if RXAxism2sVectorxD(C_LOCAL_IF_ID).LastxS = '1' then
                                     ScalpPacketValid12xS <= '1';
                                     WrSPStatexDN         <= E_WR_SP_VALID_1;
+                                end if;
 
                         when E_WR_SP_VALID_1 =>
                                 ScalpPacketValid12xS <= '0';
                                 WrSPStatexDN         <= E_WR_SP_WAIT;
 
-                        -- when E_WR_SP_WAIT_0 =>
-                        --         WrSPStatexDN <= E_WR_SP_IDLE_1;
-
-                        -- when E_WR_SP_IDLE_1 =>
-                        --         if RXAxism2sVectorxD(C_LOCAL_IF_ID).LastxS = '1' then
-                        --             WrSPStatexDN <= E_WR_LAST_1;
-                        --             ScalpPacketValid12xS <= '1';
-                        --         end if;
-
-                        -- when E_WR_LAST_1 =>
-                        --         if RXAxism2sVectorxD(C_LOCAL_IF_ID).LastxS = '0' then
-                        --             -- ScalpPacketValid12xS <= '1';
-                        --             ScalpPacketValid12xS <= '0';
-                        --             -- WrSPStatexDN         <= E_WR_SP_VALID_1;
-                        --             WrSPStatexDN         <= E_WR_SP_WAIT_1;
-                        --         end if;
-
-                        -- -- when E_WR_SP_VALID_1 =>
-                        -- --         ScalpPacketValid12xS <= '0';
-                        -- --         WrSPStatexDN         <= E_WR_SP_WAIT_1;
-
                         when E_WR_SP_WAIT =>
                                 if VioWrSpValidxS = '0' then
                                     WrSPStatexDN <= E_WR_SP_IDLE;
                                 end if;
-                        -- if VioWrSpValidxS = '0' then
-                        --     WrSPStatexDN <= E_WR_SP_IDLE;
-                        -- end if;
+
                         when others => null;
                     end case;
                 end process SpValidxP;