clean codes

sv/demod.sv

@@ -89,6 +89,9 @@ always_ff @( posedge clk or posedge rst ) begin : blockName
 end
 
 always_comb begin
+	 i_abs = 0;
+	 imm32 = 0;
+	 demod_out = 0;
     state_c=state;
     rd_en_img=1'b0;
     rd_en_rl=1'b0;
@@ -106,10 +109,10 @@ always_comb begin
             if (empty_rl==1'b0 && empty_img==1'b0) begin
                 rd_en_img=1'b1;
                 rd_en_rl=1'b1;
-		r_c= DEQUANTIZE(rl_pre*rl) -  DEQUANTIZE((-img_pre)*img);
-		i_c= DEQUANTIZE(rl_pre*img) +  DEQUANTIZE((-img_pre)*rl);
-                //r_c=mul_frac10_32b(rl_pre,rl) - mul_frac10_32b((-img_pre),img);
-                //i_c=mul_frac10_32b(rl_pre,img) + mul_frac10_32b((-img_pre),rl);
+		        //r_c= DEQUANTIZE(rl_pre*rl) -  DEQUANTIZE((-img_pre)*img);
+		        //i_c= DEQUANTIZE(rl_pre*img) +  DEQUANTIZE((-img_pre)*rl);
+                r_c=mul_frac10_32b(rl_pre,rl) - mul_frac10_32b((-img_pre),img);
+                i_c=mul_frac10_32b(rl_pre,img) + mul_frac10_32b((-img_pre),rl);
                 state_c=RUN;
                 //store for next calcluate
                 rl_pre_c=rl;

sv/fir_complex.sv

@@ -1,3 +1,5 @@
+import functs::*;
+
 module fir_complex#(
     parameter TAP_NUMBER = 20,
     // inverse filter coefficients with buffer to ensure correct convolution
@@ -312,23 +314,4 @@ always_comb begin
 end
 
 
-
-
-
-// fixed point multiplication
-function automatic logic [31:0] mul_frac10_32b (
-    input logic [31:0] ina,
-    input logic [31:0] inb
-);
-    // Perform the multiplication
-    logic [63:0] product = $signed(ina) * $signed(inb);
-
-    // Shift the product right by 10 bits to maintain the 10-bit fractional part
-    logic [31:0] result = product >> 10;
-
-    return result;
-endfunction
-
-
-
 endmodule

sv/fir_normal.sv

@@ -1,3 +1,5 @@
+import functs::*;
+
 module fir_normal#(
     parameter TAP_NUMBER = 32,
     // inverse filter coefficients with buffer to ensure correct convolution
@@ -257,30 +259,4 @@ always_comb begin
 end
 
 
-
-
-
-// fixed point multiplication
-function automatic logic [31:0] mul_frac10_32b (
-    input logic [31:0] ina,
-    input logic [31:0] inb
-);
-    // Perform the multiplication
-    logic [63:0] product = $signed(ina) * $signed(inb);
-
-    // Shift the product right by 10 bits to maintain the 10-bit fractional part
-    logic [31:0] result = product >> 10;
-
-    return result;
-endfunction
-
-
-function logic[31:0] DEQUANTIZE; 
-input logic[31:0] i;
-    begin
-        return int'($signed(i) / $signed(1 << 10));
-    end
-endfunction
-
-
 endmodule

sv/fm_radio_top.sv

@@ -1,5 +1,5 @@
 `include "para.svh"
-//`include "functions.svh"
+`include "functions.svh"
 import para::*;
 import functs::*;
 

sv/functions.svh

@@ -22,7 +22,7 @@ function automatic logic [31:0] mul_frac10_32b (
     input logic [31:0] inb
 );
     // Perform the multiplication
-    real product = $signed(ina) * $signed(inb);
+    longint product = $signed(ina) * $signed(inb);
 
     return int'($signed(product) / $signed(1 << 10));
 endfunction

sv/iir_normal.sv

@@ -1,3 +1,5 @@
+import functs::*;
+
 module iir_normal#(
     parameter TAP_NUMBER = 2,
     // inverse filter coefficients with buffer to ensure correct convolution
@@ -238,30 +240,4 @@ always_comb begin
 end
 
 
-
-
-
-// fixed point multiplication
-function automatic logic [31:0] mul_frac10_32b (
-    input logic [31:0] ina,
-    input logic [31:0] inb
-);
-    // Perform the multiplication
-    logic [63:0] product = $signed(ina) * $signed(inb);
-
-    // Shift the product right by 10 bits to maintain the 10-bit fractional part
-    logic [31:0] result = product >> 10;
-
-    return result;
-endfunction
-
-
-function logic[31:0] DEQUANTIZE; 
-input logic[31:0] i;
-    begin
-        return int'($signed(i) / $signed(1 << 10));
-    end
-endfunction
-
-
 endmodule

sv/multiplier_w_fifo.sv

@@ -1,3 +1,5 @@
+import functs::*;
+
 module multiplier_w_fifo(
     input  logic reset,
     input  logic clock,
@@ -99,18 +101,4 @@ end
 
 
 
-function automatic logic [31:0] mul_frac10_32b (
-    input logic [31:0] ina,
-    input logic [31:0] inb
-);
-    // Perform the multiplication
-    logic [63:0] product = $signed(ina) * $signed(inb);
-
-    // Shift the product right by 10 bits to maintain the 10-bit fractional part
-    logic [31:0] result = product >> 10;
-
-    return result;
-endfunction
-
-
 endmodule