Verilog Calling Task with Array

[ganeshrahate]

Hi
I am just working on my very first project on verilog in my final year

I am stuck at one task

I am trying create task for writing data on bus , but i want to send multiple data in same task by using one input declaration as an array

task write_data;
input n_write; // nuber of data to be send
input [data_width-1:0] write_data;
begin
wrdataen = 1'b1;
repeat(n_write) @(posedge clk) // i am thinking of using for loop here
begin
$display ("%t : Value Write is %h", $time, write_data);
wrdata = write_data;
end
wrdataen = 1'b0; // this is write data enable
end
endtask


i wan to call task this

write_data(32'h5555,32'h7777,32'h6666,32'h8888,32'h11111,32'h2222)

 

[dave_59]

If you can use SystemVerilog, you would code this using a dynamic array:

task write_data (input [data_width-1:0] write_data[]);
  wrdataen = 1'b1;
  foreach(write_data[i]) @(posedge clk) // i am thinking of using for loop here
  begin
    $display ("%t : Value Write is %h", $time, write_data[i]);
    wrdata = write_data[i];
    end
  wrdataen = 1'b0; // this is write data enable
endtask

write_data({32'h5555,32'h7777,32'h6666,32'h8888,32' h11111,32'h2222});

Otherwise you will have to use a large vector and pull out 32-bits at a time.

task write_data (input integer n_write, reg [(MAX_WORDS*data_width)-1:0] write_data[]);
integer i;
begin
 wrdataen = 1'b1;
  for(i = 0, i<n_write)i=i+1)
    @(posedge clk) // i am thinking of using for loop here
  begin
    $display ("%t : Value Write is %h", $time, write_data[i*32+:32]); // you'll have to play with this to get the words in the right order
    wrdata = write_data[i*32+:32];
    end
  wrdataen = 1'b0; // this is write data enable
end
endtask

 

[ganeshrahate]

Thank you so much sir
I have been stuck over this for more than 3 weeks and after even long net searching i didnt got any help , but thanks to you sir i have got answer for my query.
If I am not asking too much sir can please refer me some book by which i can enhance my verilog skills more. I have got lots of basic book i am looking for some advance level.
Thank you so much sir.

- - - Updated - - -

Thank you so much sir
I have been stuck over this for more than 3 weeks and after even long net searching i didnt got any help , but thanks to you sir i have got answer for my query.
If I am not asking too much sir can please refer me some book by which i can enhance my verilog skills more. I have got lots of basic book i am looking for some advance level.
Thank you so much sir.