RE: I was wondering where I went wrong

Joseph J. OP #4377830
Rate this post
• ▲ useful
▼ not useful 
1
module display (clock, AN0, AN1, AN2, AN3, CA, CB, CC, CD, CE, CF, CG, CDP);

2


3


4
//USED FOR SEVEN SEG

5
input clock;

6


7
output AN0, AN1, AN2, AN3, CA, CB, CC, CD, CE, CF, CG, CDP;

8


9
reg [7:0] cathodedata; //cathode data

10
reg [3:0] anodedata; //anode data

11
reg [2:0] digit = 1;

12
reg [6:0] data;

13
reg setdp;

14
reg [19:0] counter = 0;

15


16
assign CA = cathodedata [7];

17
assign CB = cathodedata [6];

18
assign CC = cathodedata [5];

19
assign CD = cathodedata [4];

20
assign CE = cathodedata [3];

21
assign CF = cathodedata [2];

22
assign CG = cathodedata [1];

23
assign CDP = cathodedata [0];

24
assign AN3 = anodedata [3];

25
assign AN2 = anodedata [2];

26
assign AN1 = anodedata [1];

27
assign AN0 = anodedata [0];

28
//USED FOR SEVEN SEG

29


30
    //Multiplexing

31
    //Board Clock: 50MHz

32
    //p = t*f

33
    //t = 16ms

34
    //p = 16ms * 50*10^6 = 800,000 cycles

35
    //200,000 cycles for each digit

36
    //Refreshed every 16ms (~60Hz)

37


38
always@(negedge clock)

39
begin

40
    if (digit == 1)

41
        begin

42
            if (counter == 200000)

43
                begin

44
                    digit = 2;

45
                end

46
            else

47
                begin

48
                counter = counter + 1;

49
                data = 4;

50
                end

51
        end

52
    else if (digit == 2)

53
        begin

54
            if (counter == 400000)

55
                begin

56
                    digit = 3;

57
                end

58
            else

59
                begin

60
                    counter = counter + 1;

61
                    data = 3;

62
                end

63
        end

64
    else if (digit == 3)

65
        begin

66
            if (counter == 600000)

67
                begin

68
                    digit = 4;

69
                end

70
            else

71
                begin

72
                    counter = counter + 1;

73
                    data = 2;

74
                end

75
        end

76
    else if (digit == 4)

77
        begin

78
            if (counter == 800000)

79
                begin

80
                    digit = 1;

81
                    counter = 0;

82
                end 

83
            else

84
                begin

85
                    counter = counter + 1;

86
                    data = 1;

87
                end

88
        end 

89
end

90


91


92
always @ (*)

93
begin

94


95
    case (data)

96
        6'd0: cathodedata = 8'b00000011; //0

97
        6'd1: cathodedata = 8'b10011111; //1

98
        6'd2: cathodedata = 8'b00100101; //2

99
        6'd3: cathodedata = 8'b00001101; //3

100
        6'd4: cathodedata = 8'b10011001; //4

101
        6'd5: cathodedata = 8'b01001001; //5

102
        6'd6: cathodedata = 8'b01000001; //6

103
        6'd7: cathodedata = 8'b00011111; //7

104
        6'd8: cathodedata = 8'b00000001; //8

105
        6'd9: cathodedata = 8'b00001001; //9

106
        6'd10: cathodedata = 8'b00010001; //A

107
        6'd11: cathodedata = 8'b11000001; //B

108
        6'd12: cathodedata = 8'b01100011; //C

109
        6'd13: cathodedata = 8'b10000101; //D

110
        6'd14: cathodedata = 8'b00100001; //E

111
        6'd15: cathodedata = 8'b01110001; //F

112
        default: cathodedata = 8'b11111111; //default all off

113
    endcase

114


115
    if (setdp == 1) //decimal point

116
        cathodedata = cathodedata & 8'hFE;

117


118
    case(digit)

119
        0: anodedata = 4'b1111; //all OFF

120
        4: anodedata = 4'b1110; //AN0

121
        3: anodedata = 4'b1101; //AN1

122
        2: anodedata = 4'b1011; //AN2

123
        1: anodedata = 4'b0111; //AN3

124
        default:

125
        anodedata = 4'b1111; //all OFF

126
    endcase

127


128
end 

129
endmodule


I am using a Nexys 2 digilent board with Xilinix and I just want to turn 
the seven seg display on as a countdown
Reply Quote Edit Move Thread sperren Anmeldepflicht aktivieren Anpinnen Delete topic Thread mit anderem zusammenführen Report post
Joseph J. OP #4377833
Rate this post
• ▲ useful
▼ not useful 
I was wondering in the code what the anode data would be in order to get 
the lights to turn on I am so very confused

1
module seven_seg( intput [3:0]numbers, output reg[6:0] display);

2


3
always @(numbers)

4
  begin  

5
    case(numbers)

6
      4'h0: out1=7'b1000000;  //0111111;

7
      4'h1:  out1=7'b1111001;  //0000110;

8
      4'h2:  out1=7'b0100100;  //1011011;

9
      4'h3: out1=7'b0110000;  //1001111;

10
      4'h4: out1=7'b0011001;  //1100110;

11
      4'h5: out1=7'b0010010;  //1101101;

12
      4'h6: out1=7'b0000010;  //1111101;

13
      4'h7: out1=7'b1111000;  //0000111;

14
      4'h8: out1=7'b0000000;  //1111111;

15
      4'h9: out1=7'b0011000;  //1100111;

16
       default: out1=7'b1111111;//0000000;

17
    endcase

18
  end  

19
endmodule

20


21


22
endmodule

23
// display numbers*/

1
/*

2
module Slowclock(input wire clk, output reg clkslowed

3
    );

4
  integer count=0; 

5
  always @(posedge clk)

6
    begin 

7
      if(count<12500)

8
      begin 

9
        count=count+1;

10
      end 

11
      else 

12
      begin 

13
            clkslowed=!clkslowed;

14
            count=0;

15
          end

16
      end

17
endmodule

18
//slow down clock speed so you can manipulate the seven seg display */

I just dont know why my lights arent going on I have the nexys 2 board I 
need the countdown to work or seven seg display I need for it to 
countdown from 9 to 0

  





  

    Reply Quote Edit Delete Report post
  








      

      





      

      



  

    

      Joseph

    

      Guest


    

    
    #4378077
  




  

  Rate this post
  

  •
  
  ▲ useful 
  

  ▼ not useful 
  		
  

  


  

      
Lothar M. wrote:
> Joseph J. wrote:
> I just want to turn the seven seg display on as a countdown
>
> What did happen instead?
> And how did you find out

 Nothing happened it didn't turn on at all the seven segment. I found 
because it didn't work I don't know where I put the actual lights part 
referenced as A0 in the next part.

  





  

    Reply Quote Edit Delete Report post
  








      

      





      

      



  

    

      Lothar M.
      

    

      Moderator

      (Company: Titel)

    

    
    #4378366
  




  

  Rate this post
  

  •
  
  ▲ useful 
  

  ▼ not useful 
  		
  

  


  

      
Joseph Abel wrote:
> I feel like im messing my user constraints file I am not sure
What does your simulation look like?
In a behavioral simulation no UCF file is involved. And therefore its 
the best way to start that way.

> I am not sure
What about trying to switch on just some segments on one of the 
digits. That would be a wholy static design without counters and other 
more tricky things.
So: do some small steps and learn by those small steps...

  





  

    Reply Quote Edit Delete Report post
  








      

      





      

      






    

    

       Watch this topic


    

        


Reply




  
Please log in before posting.

  

  
Existing account



  

    

      

        
        
      

      

        
        
      

    


    

      
      
    




  
or

  Log in with Google account





  
No account?

  
Registration is free and takes only a minute.

  Register now