reflectometer top testbench config update

designs/reflectometer_base/tb_reflectometer.sv

@@ -13,8 +13,39 @@ module tb_reflectometer;
     localparam WINDOW_SIZE = 65;    // fixed subwindow size to average by time
     localparam PACKET_SIZE = 1024;  // bytes per UDP packet
 
+    localparam int unsigned ADC_CLK_MHZ = 65;
+    localparam int unsigned DAC_CLK_MHZ = 125;
+
+    // may be changed for test purposes
+    localparam int unsigned PULSE_WIDTH = 2**6;
+    localparam int unsigned PULSE_PERIOD = 2**8;
+    localparam int unsigned PULSE_NUM = 10;
+    localparam int unsigned PULSE_HEIGHT = 2**12;
+    localparam int unsigned PULSE_PERIOD_ADC = (int'(real'(ADC_CLK_MHZ) / real'(DAC_CLK_MHZ) * real'(PULSE_PERIOD)) / int'(WINDOW_SIZE)) * int'(WINDOW_SIZE);
+    
+    initial begin
+        if (PULSE_WIDTH <= 0)
+            $fatal(1, "PULSE_WIDTH should be positive");
+        if (PULSE_PERIOD <= 0)
+            $fatal(1, "PULSE_PERIOD should be positive");
+        if (PULSE_NUM <= 0)
+            $fatal(1, "PULSE_NUM should be positive");
+        if (PULSE_HEIGHT <= 0)
+            $fatal(1, "PULSE_HEIGHT should be positive");
+        if (PULSE_WIDTH >= 2**32-1)
+            $fatal(1, "PULSE_WIDTH too high");
+        if (PULSE_PERIOD >= 2**32-1)
+            $fatal(1, "PULSE_PERIOD too high");
+        if (PULSE_NUM >= 2**16-1)
+            $fatal(1, "PULSE_NUM too high");
+        if (PULSE_HEIGHT >= 2**DAC_DATA_WIDTH-1)
+            $fatal(1, "PULSE_HEIGHT too high");
+        if (PULSE_PERIOD_ADC % WINDOW_SIZE == 0)
+            $fatal(1, "PULSE_PERIOD_ADC isn't multiple of WINDOW_SIZE");
+    end
+
     // DUT signals
-    logic clk200, clk_eth_phy_tx, clk_eth_phy_rx;
+    logic clk200, clk_eth_phy_tx, clk_eth_phy_rx; // GMII clocks
     logic rst_n;
     wire [3:0] status_leds; // [ None, dac_start, m_axis_valid, clk_wiz_locked ]
 
@@ -24,17 +55,19 @@ module tb_reflectometer;
     logic adc_otr;
     logic [ADC_DATA_WIDTH-1:0] adc_data;
 
-    wire [7:0]  s_axis_tx_tdata;
-    wire        s_axis_tx_tvalid;
+    wire [7:0]   s_axis_tx_tdata;
+    wire         s_axis_tx_tvalid;
     logic        s_axis_tx_tready;
-    wire        s_axis_tx_tlast;
+    wire         s_axis_tx_tlast;
     
-    logic       phy_ready;
-    wire        accum_tx_start;
+    logic        phy_ready;
+    wire         accum_tx_start;
     logic [7:0]  m_axis_rx_tdata;
     logic        m_axis_rx_tvalid;
     logic        m_axis_rx_tlast;
-    wire        m_axis_rx_tready;
+    logic        m_axis_rx_tready;
+
+    logic [127:0] dut_config = 0;
 
     // DUT
     reflectometer_top #(
@@ -101,6 +134,90 @@ module tb_reflectometer;
     end
     assign adc_otr = 1'b0;
 
+    // AXIS tasks
+    task automatic axis_send_byte(
+        ref  logic       clk,
+        input  logic [7:0] data,
+        input  logic       last,
+        ref    logic       tvalid,
+        ref    logic [7:0] tdata,
+        ref    logic       tlast,
+        input  logic       tready
+    );
+        @(posedge clk);
+        tdata  <= data;
+        tlast  <= last;
+        tvalid <= 1'b1;
+
+        // Ждем готовности приемника
+        wait(tready === 1'b1);
+
+        @(posedge clk);
+        tvalid <= 1'b0;
+        tlast  <= 1'b0;
+    endtask
+
+    task automatic dut_soft_reset();
+        axis_send_byte(
+            .clk(clk_eth_phy_rx),
+            .data(8'b00001111),
+            .last(1'b1),
+            .tvalid(m_axis_rx_tvalid),
+            .tdata(m_axis_rx_tdata),
+            .tlast(m_axis_rx_tlast),
+            .tready(m_axis_rx_tready)
+        );
+    endtask
+
+    task automatic dut_start();
+        axis_send_byte(
+            .clk(clk_eth_phy_rx),
+            .data(8'b11110000),
+            .last(1'b1),
+            .tvalid(m_axis_rx_tvalid),
+            .tdata(m_axis_rx_tdata),
+            .tlast(m_axis_rx_tlast),
+            .tready(m_axis_rx_tready)
+        );
+    endtask
+
+//    task automatic dut_send_config(
+//        input logic [127:0] ctrl_config
+//    );
+//        // команда set_data
+//        axis_send_byte(
+//            .clk(clk_eth_phy_rx),
+//            .data(8'b10001000),
+//            .last(1'b0),
+//            .tvalid(m_axis_rx_tvalid),
+//            .tdata(m_axis_rx_tdata),
+//            .tlast(m_axis_rx_tlast),
+//            .tready(m_axis_rx_tready)
+//        );
+//        // config burst
+//        for (int i = 0; i < 16; i++) begin
+//            logic [7:0] byte_to_send;
+//            logic       is_last;
+
+//            // get byte
+//            byte_to_send = ctrl_config[i*8 +: 8];
+//            // tlast for last byte
+//            is_last = (i == 15);
+
+//            axis_send_byte(
+//                .clk(clk_eth_phy_rx),
+//                .data(byte_to_send),
+//                .last(is_last),
+//                .tvalid(m_axis_rx_tvalid),
+//                .tdata(m_axis_rx_tdata),
+//                .tlast(m_axis_rx_tlast),
+//                .tready(m_axis_rx_tready)
+//            );
+//        end
+//    endtask
+
+
+
     // some helpers for controller axis
     
     // GAME PLAN
@@ -130,8 +247,19 @@ module tb_reflectometer;
         #20;
         $display("=== clocks ready / wiz. locked ===");
         #40;
+        // ready to work
         
+        dut_config[31:0]                    = PULSE_WIDTH;
+        dut_config[63:32]                   = PULSE_PERIOD;
+        dut_config[79:64]                   = PULSE_NUM;
+        dut_config[79+DAC_DATA_WIDTH:80]    = PULSE_HEIGHT;
+        dut_config[127:96]                  = PULSE_PERIOD_ADC;
         
+//       dut_send_config(dut_config);
+        dut_start();
+        // dut_start();
+        #1000;
+        // dut_soft_reset();
 
         $display("=== ALL BASIC TESTS PASSED ===");
         $finish;