axi_adc_trigger: Add and 1 extra delay

The extra delay was added on the trigger and data paths to compensate
for the logic analyzer changes.

The extra delay will be also seen on the m2k daisy chain. The
delay between devices will be increased from 3 to 4 samples delay.

library/axi_adc_trigger/axi_adc_trigger.v

@@ -57,10 +57,10 @@ module axi_adc_trigger #(
   input                 data_valid_a,
   input                 data_valid_b,
 
-  output      [15:0]    data_a_trig,
+  output reg  [15:0]    data_a_trig,
-  output      [15:0]    data_b_trig,
+  output reg  [15:0]    data_b_trig,
-  output                data_valid_a_trig,
+  output reg            data_valid_a_trig,
-  output                data_valid_b_trig,
+  output reg            data_valid_b_trig,
   output                trigger_out,
   output                trigger_out_la,
 
@@ -285,24 +285,22 @@ module axi_adc_trigger #(
     end
 
     trigger_out_ack <= trigger_out_hold & (data_valid_a | data_valid_b);
-
-    // triggers logic analyzer
   end
 
   assign trigger_out_la = trigger_out_mixed;
   assign trigger_out = trigger_out_hold | trigger_out_m2;
 
-  // the embedded trigger does not require any extra delay, since the util_extract
+  always @(posedge clk) begin
-  // present in this case, delays the trigger with 2 clock cycles
+    data_a_trig <= (embedded_trigger == 1'h0) ? {data_a[14],data_a[14:0]} : {trigger_out_s,data_a[14:0]};
-  assign data_a_trig = (embedded_trigger == 1'h0) ? {data_a[14],data_a[14:0]} : {trigger_out_s,data_a[14:0]};
+    data_b_trig <= (embedded_trigger == 1'h0) ? {data_b[14],data_b[14:0]} : {trigger_out_s,data_b[14:0]};
-  assign data_b_trig = (embedded_trigger == 1'h0) ? {data_b[14],data_b[14:0]} : {trigger_out_s,data_b[14:0]};
+
+    data_valid_a_trig <= data_valid_a;
+    data_valid_b_trig <= data_valid_b;
+  end
 
   assign embedded_trigger = trigger_out_control[16];
   assign trigger_out_s = (trigger_delay == 32'h0) ? (trigger_out_mixed | streaming_on) :
                                                   (trigger_out_delayed | streaming_on);
-  assign data_valid_a_trig = data_valid_a;
-  assign data_valid_b_trig = data_valid_b;
-
   assign trigger_out_delayed = (trigger_delay_counter == 32'h0) ? 1 : 0;
 
   always @(posedge clk) begin
@@ -386,7 +384,7 @@ module axi_adc_trigger #(
     endcase
   end
 
-  always @(*) begin
+  always @(posedge clk) begin
     case(function_a)
       2'h0: trigger_adc_a = comp_low_a_s;
       2'h1: trigger_adc_a = comp_high_a;
@@ -396,7 +394,7 @@ module axi_adc_trigger #(
     endcase
   end
 
-  always @(*) begin
+  always @(posedge clk) begin
     case(function_b)
       2'h0: trigger_adc_b = comp_low_b_s;
       2'h1: trigger_adc_b = comp_high_b;