update testbench to save sim data

projects/dl814_k7/dl814_k7_cal_coarse/testbenches/tb_rx_pre.v

@@ -159,6 +159,8 @@ end
 
 integer r_file_real;
 integer r_file_imag;
+integer w_file_real;
+integer w_file_imag;
 
 reg signed [11:0] rx_ch1_i_data = 'b0, rx_ch1_q_data = 'b0;
 reg signed [11:0] rx_ch2_i_data = 'b0, rx_ch2_q_data = 'b0;
@@ -204,6 +206,9 @@ initial begin
     r_file_real = $fopen("../../../../../testbenches/xs1_real.csv","r");
     r_file_imag = $fopen("../../../../../testbenches/xs1_imag.csv","r");
 
+    w_file_real = $fopen("../../../../../testbenches/out_real.csv","w");
+    w_file_imag = $fopen("../../../../../testbenches/out_imag.csv","w");
+
     @(posedge ad9361_cal_valid)
 
     forever begin
@@ -218,6 +223,18 @@ initial begin
             rx_ch2_q_data,
             rx_ch3_q_data,
             rx_ch4_q_data);
+        $fdisplay(w_file_real,"%d,%d,%d,%d,%d",
+            $signed(u_rx_pre_process.rx_comp_ch1_i),
+            $signed(u_rx_pre_process.rx_comp_ch2_i),
+            $signed(u_rx_pre_process.rx_comp_ch3_i),
+            $signed(u_rx_pre_process.rx_comp_ch4_i),
+            $signed(rx_data_i));
+        $fdisplay(w_file_imag,"%d,%d,%d,%d,%d",
+            $signed(u_rx_pre_process.rx_comp_ch1_q),
+            $signed(u_rx_pre_process.rx_comp_ch2_q),
+            $signed(u_rx_pre_process.rx_comp_ch3_q),
+            $signed(u_rx_pre_process.rx_comp_ch4_q),
+            $signed(rx_data_q));
     end
 end