add effect mixer module and posibility to switch effects

effect_controler.v

@@ -12,10 +12,18 @@ module effect_controler #( parameter
     output  signed      [d_width-1: 0]  o_l_data,
     output  signed      [d_width-1: 0]  o_r_data,
 
+    output                                      o_read_done,    // read done from effects module
+    output                                      o_read_ready,   // ready read from reefects module
+
+
+    input               [1:0]           sw,             // effect control swiches
+
     output  signed      [memory_d_width-1: 0]   o_data_to_eff,     // Data output to effects module
     output                                      o_data_valid,         // data valid to read (FIFO not empty). data valid signal to effect module
-    input                                       i_read_enable,
-    input  signed      [memory_d_width-1: 0]    i_data_from_eff,     // Data output to effects module
+    input                                       i_read_enable,          // enable read from input fifo 
+    input  signed      [memory_d_width-1: 0]    i_data_from_eff_sw0,     // Data output to effects module
+    input  signed      [memory_d_width-1: 0]    i_data_from_eff_sw1,     // Data output to effects module
+
     input                                       i_dv_from_eff         // data valid to read (FIFO not empty). data valid signal to effect module
      
 );
@@ -26,9 +34,14 @@ wire signed [memory_d_width-1: 0]  w_o_data;        //output data to io_module
 
 wire                            w_empty_in, w_full_in;
 wire                            w_empty_out, w_full_out;
+
+wire  [memory_d_width-1:0]       w_data_to_fifo;         // wire connets mixer to output fifo
+
 wire  [address_width-1:0]       w_data_fill_input;      // shows how full are in FIFO memmory for intput
 wire  [address_width-1:0]       w_data_fill_output;     // shows how full are in FIFO memmory for output
 
+wire                            w_data_valid_to_fifo;   // data valid to write output FIFO from mixer           
+
 assign o_l_data [ d_width-1 : d_width - memory_d_width ] = w_o_data;         // only left chanal are used in controler
 assign o_r_data [ d_width-1 : d_width - memory_d_width ] = w_o_data;         // same as left
 
@@ -62,14 +75,34 @@ sync_fifo #(
    .full(w_full_out),
    .empty(w_empty_out),
    .data_fill(w_data_fill),
-   .data_in(i_data_from_eff),       
+   .data_in(w_data_to_fifo),       
    .w_clk(clk),
    .r_clk(mclk),
    .reset(reset),
-   .wr_en( w_full_out  ? 1'b0 : i_dv_from_eff ),     // checking is FIFO full
+   .wr_en( w_data_valid_to_fifo ),     // checking of FIFO full are performing mixer module
    .rd_en( w_empty_out ? 1'b0 : 1'b1 )                  // checking is FIFO empty
 );
 
 
 
+// Effect mixer, performs audio data  merging 
+effect_mixer #( 
+    .data_width(memory_d_width)             // memory data width
+) effect_mixer (
+    .sw(sw),
+    .clk(clk),
+    .reset(reset),
+    .i_fifo_full(w_full_out),
+    .o_read_done(o_read_done),              // read from effect module done
+    .o_read_ready(o_read_ready),            // ready to read from effect module
+    .o_data(w_data_to_fifo),                // data to output FIFO memory
+    .o_data_valid(w_data_valid_to_fifo),
+    .i_dv_from_eff(i_dv_from_eff),
+    .i_data_from_eff_sw0(i_data_from_eff_sw0),     // Data output to effects module
+    .i_data_from_eff_sw1(i_data_from_eff_sw1) 
+);
+
+
+
+
 endmodule