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Help me jump over counter values in a code

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kaiser

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module CONTROL( ld, clk_c, rst_c);
output [3:0] ld;
input clk_c;
input rst_c;
reg [3:0] ld;

reg [2:0] count;

always @ (posedge clk_c or posedge rst_c)
begin
if (rst_c)
begin
count<= 3'd0;
ld <= 4'b0;
end
else

begin
count <= count +1 ;
case (count)
3'd1 : ld[0] <= 1;
3'd2 : ld[1] <= 1;
3'd3 : ld[2] <= 1;
3'd4 : ld[3] <= 1;
default : begin
ld <= 4'b0;
count <= 3'b0;
end
endcase
end
end
endmodule

in the above code.....how can I jump over 3'd5,3'd6,3'd7 values of the counter....?
This code light 4 led ....and when the values of counter > 4 the all leds are closed
3 periods.....how can make leds stay closed 1 period?
 

Help need

You need to reset the counter when its value is 4 to jump over the values which are greater than 4.
So:
......
begin

if (count == 3'd4)
count <= 3'd0;
else
count <= count +1 ;

case (count)
..............
 

Re: Help need

I think this is what you want to do!!!
Hope this helps!

Code: 
module CONTROL( ld, clk_c, rst_c);
   output [3:0] ld;
   input       clk_c;
   input       rst_c;
   reg [3:0]   ld;
   reg [3:0] ld_nx;
    
   always @ (posedge clk_c or posedge rst_c) begin
      if (rst_c) begin
         ld <= 4'b0;
      end else begin
         ld <= ld_nx;
      end
   end // always @ (posedge clk_c or posedge rst_c)
   
   always@(ld) begin
      ld_nx = 0;
      case(ld)
        0 : ld_nx[0] = 1'b1;
        1 : ld_nx[1] = 1'b1;
        2 : ld_nx[2] = 1'b1;
        4 : ld_nx[3] = 1'b1;
        8 : ld_nx[0] = 1'b1;
      endcase // case(ld)
    end
endmodule
 

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