Added g_channel_incr and g_err_incr. Default 1, but this enables using e.g. 0 for fixed valeus.

libraries/base/dp/tb/vhdl/dp_stream_stimuli.vhd

@@ -23,6 +23,10 @@
 -- . The dp_stream_stimuli generates as stream of packets with counter data.
 -- Description:
 --
+-- Remark:
+-- . The stimuli empty = 0 because the data in proc_dp_gen_block_data() is
+--   generated with one symbol per data (because symbol_w = data_w).
+--
 -- Usage:
 -- . See tb_dp_example_no_dut for usage example
 --
@@ -48,10 +52,12 @@ ENTITY dp_stream_stimuli IS
     -- initializations
     g_sync_period    : NATURAL := 10;
     g_sync_offset    : NATURAL := 7;
-    g_data_init      : NATURAL := 0;
-    g_bsn_init       : STD_LOGIC_VECTOR(c_dp_stream_bsn_w-1 DOWNTO 0) := X"0000000000000000";  -- X"0877665544332211"
-    g_err_init       : NATURAL := 247;
-    g_channel_init   : NATURAL := 5;  -- fixed
+    g_data_init      : NATURAL := 0;    -- choose some easy to recognize and unique value, data will increment at every sop
+    g_bsn_init       : STD_LOGIC_VECTOR(c_dp_stream_bsn_w-1 DOWNTO 0) := X"0000000000000000";  -- X"0877665544332211", bsn will increment at every sop
+    g_err_init       : NATURAL := 247;  -- choose some easy to recognize and unique value
+    g_err_incr       : NATURAL := 1;    -- when 0 keep fixed at init value, when 1 increment at every sop
+    g_channel_init   : NATURAL := 5;    -- choose some easy to recognize and unique value
+    g_channel_incr   : NATURAL := 1;    -- when 0 keep fixed at init value, when 1 increment at every sop
     -- specific
     g_in_dat_w       : NATURAL := 32;
     g_nof_repeat     : NATURAL := 5;
@@ -116,9 +122,9 @@ BEGIN
     
     -- Adjust initial sosi field values by -1 to compensate for auto increment
     v_sosi.bsn     := INCR_UVEC(g_bsn_init,                    -1);
-    v_sosi.channel := INCR_UVEC(TO_DP_CHANNEL(g_channel_init), -1);
+    v_sosi.channel := INCR_UVEC(TO_DP_CHANNEL(g_channel_init), -g_channel_incr);
     v_sosi.data    := INCR_UVEC(TO_DP_DATA(g_data_init),       -g_pkt_len);
-    v_sosi.err     := INCR_UVEC(TO_DP_ERROR(g_err_init),       -1);
+    v_sosi.err     := INCR_UVEC(TO_DP_ERROR(g_err_init),       -g_err_incr);
     
     i_src_out <= c_dp_sosi_rst;
     proc_common_wait_until_low(clk, rst);
@@ -129,10 +135,10 @@ BEGIN
       -- Auto increment v_sosi field values for this packet
       v_sosi.bsn     := INCR_UVEC(v_sosi.bsn, 1);
       v_sosi.sync    := sel_a_b((UNSIGNED(v_sosi.bsn) MOD g_sync_period) = g_sync_offset, '1', '0');  -- insert sync starting at BSN=g_sync_offset and with period g_sync_period
-      v_sosi.channel := INCR_UVEC(v_sosi.channel, 1);
+      v_sosi.channel := INCR_UVEC(v_sosi.channel, g_channel_incr);
       v_sosi.data    := INCR_UVEC(v_sosi.data, g_pkt_len);
       v_sosi.data    := RESIZE_DP_DATA(v_sosi.data(g_in_dat_w-1 DOWNTO 0));  -- wrap when >= 2**g_in_dat_w
-      v_sosi.err     := INCR_UVEC(v_sosi.err, 1);
+      v_sosi.err     := INCR_UVEC(v_sosi.err, g_err_incr);
       
       -- Send packet
       proc_dp_gen_block_data(g_in_dat_w, TO_UINT(v_sosi.data), g_pkt_len, TO_UINT(v_sosi.channel), TO_UINT(v_sosi.err), v_sosi.sync, v_sosi.bsn, clk, stimuli_en, src_in, i_src_out);
@@ -154,8 +160,8 @@ BEGIN
     -- Determine and keep last expected sosi field values after end of stimuli
     -- . e_qual
     v_last.bsn     := STD_LOGIC_VECTOR( UNSIGNED(g_bsn_init) + g_nof_repeat-1);
-    v_last.channel := TO_DP_CHANNEL(g_channel_init           + g_nof_repeat-1);
-    v_last.err     := TO_DP_ERROR(g_err_init                 + g_nof_repeat-1);
+    v_last.channel := TO_DP_CHANNEL(g_channel_init           + (g_nof_repeat-1)*g_channel_incr);
+    v_last.err     := TO_DP_ERROR(g_err_init                 + (g_nof_repeat-1)*g_err_incr);
     -- . account for g_pkt_len
     v_last.data    := INCR_UVEC(v_sosi.data, g_pkt_len-1);
     v_last.data    := RESIZE_DP_DATA(v_last.data(g_in_dat_w-1 DOWNTO 0));  -- wrap when >= 2**g_in_dat_w