Modelsim error

[Altera_Forum]

Hii i am using Modelsim student edition for the simulation of my edge detection code. 

I am getting the following error....  ** Error: fixed_pkg Unbounded number passed, was a literal used?**  can any one please suggest what is the meaning of this error??? Thanx and regards!!

[Altera_Forum]

Why would you think anyone will know what's wrong when you didn't include any code?

[Altera_Forum]

Very little information to go on: 

What version of modelsim? what version of fixed_pkg? post some code?

[Altera_Forum]

--- Quote Start ---  Very little information to go on: What version of modelsim? what version of fixed_pkg? post some code?  --- Quote End ---    Sorry for less information...I am using model sim 10.4a PE student version.And fixed_package is of $Revision: 1.11 $ version. Actually my code is of 877 lines so its not possible to paste the complete code.Also I am having two more modules with it. It is showing error in the following process ..  angle1: process (clk) variable index2 :integer:=0; variable index3 :integer:=0; variable count1 :integer:=0;  VARIABLE row_cnt_m: INTEGER:=0;--row count  VARIABLE col_cnt_m: INTEGER:=0;--coloumn count  VARIABLE col_tr_m: BOOLEAN:=FALSE;--end of coloumn  begin IF(clk'EVENT AND clk='1') THEN      mod_d <= unsigned(to_ufixed(resize((abs(dx)+abs(dy)),7,0))); --Resize the result to 8 bits  buffm(index2)<=(mod_d);  index2 := index2+1; col_cnt_m := col_cnt_m +1; count1 := count1+1; --at end of one row  IF (count1=256) THEN  row_cnt_m:=row_cnt_m+1;  IF (col_tr_m=FALSE) THEN  col_res_m<=col_cnt_m;  col_tr_m:=TRUE;  END IF;  count1 := 0; col_cnt_m :=0;  END IF; --at end of one frame  IF (index2=65535) THEN  row_res_m<=row_cnt_m;  row_cnt_m:=0;  col_cnt_m:=0;  index2:=0;  count1 := 0;  END IF;     IF (row_cnt_m=3) THEN  prv_load_m<='1';  cur_load_m<='1';  nex_load_m<='1';  END IF; IF (dx /= "000000000000000" ) THEN IF (dy /= "000000000000000" ) THEN  div <= resize((dy /dx),8,-3); END IF; END IF; if ((num1 < div AND div < num2)or( num5 < div AND div < num1) ) then  data <= my_lut(4);  elsif (num2 < div AND div < num4 ) then  data <= my_lut(1);  elsif ((num4 < div AND div < num8) OR (num7< div AND div < num6) ) then  data <= my_lut(2);  elsif (num6 < div and div < num5) then  data <= my_lut(3);  end if; bufang(index3) <= data; index3 := index3 +1; if (index3 =65535) then index3 := 0; end if; END IF; end process angle1;  I am taking a 256 * 256 image.And this is the part for angle calculation in canny edge detector.my_lut is a lookup table having values 0 ,45,90 and 135 in degree.and variable num is different variable range in sfixed formate.

[Altera_Forum]

Without all of the signal descriptions, we wont be able to give a full answer. 

Please attach the full code to your post (dont paste it).

[Altera_Forum]

--- Quote Start ---  Without all of the signal descriptions, we wont be able to give a full answer. Please attach the full code to your post (dont paste it).  --- Quote End ---    Please find attachments ,this is the main code file.If you need any other file then please tell me.

[Altera_Forum]

--- Quote Start ---  Please find attachments ,this is the main code file.If you need any other file then please tell me.  --- Quote End ---     This is the same code with some correction in it.please help me with it.

[Altera_Forum]

dx and dy are declared as sfixed(), but you're trying to convert it to ufixed. There is no to_ufixed function from sfixed because such a thing would not make much sense. If you really insist on using ufixed, you need to type cast it yourself via: 

 mod_d <= to_unsigned(ufixed(resize((abs(dx)+abs(dy)),7,0))); --Resize the result to 8 bits  But given dx and dy are signed - im guessing things are going to start to go wrong..

[Altera_Forum]

Thank you so much for your reply.I tried the line suggested by you .It is showing the following error. 

  no feasible entries for subprogram "to_unsigned".  So I changed the mod _d to (9 downto 0).   mod_d <= unsigned(to_ufixed(resize((abs(dx)+abs(dy)),9,0)));  This is giving correct mod and division values with respect to different dx and dy values. Now the error is same.if I am changinf the simulation setting to (Simulation-Run time option-message severity-error),it is showing following error.  # ** error: fixed_pkg unbounded number passed, was a literal used? # time: 783 us iteration: 0 process: /camera/uut/angle1 file: c:/users/embedded/desktop/new/fixed_pkg.vhdl # break in subprogram mine at c:/users/embedded/desktop/new/fixed_pkg.vhdl line 2061.  So is it mean thet error is in process angle1.As i read in some sites that this error caused if we use negative indexing,which I have not used through out the code.Please help me with this .I am not getting what to do.I am attaching the new file with some modifications in it.

[Altera_Forum]

As I have said before, you have dx and dy declared as sfixed, but then casting to a unsigned - why?

[Altera_Forum]

--- Quote Start ---  As I have said before, you have dx and dy declared as sfixed, but then casting to a unsigned - why?  --- Quote End ---   Thank you for replying.. Sorry now I get it. Even if i will change it to sfixed it will be same as I am taking abs value of it. So no need to convert it in unsigned. I did the changes but the error is same as above.Can you suggest any thing.I am attaching updated file with it.

[Altera_Forum]

Without your testbench - there is not much I can do as it compiles just fine. I assume your error is runtime? 

Debugging is really something you should be doing.

[Altera_Forum]

--- Quote Start ---  Without your testbench - there is not much I can do as it compiles just fine. I assume your error is runtime? Debugging is really something you should be doing.  --- Quote End ---     I am trying to debug it from one week.Can you give me outline how to debug a code.And what is this run time error.I am using an small image of size 64 *64.How to deal with run time error.

[Altera_Forum]

Run time error is an error that occurs during runtime - ie. during simulation. I do not get a problem compiling your code, but I cannot run your code as I do not have the testbench you are using to simulate it.