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各位大神,请进来看看,急急急~~~

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发表于 2016-4-13 10:36 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式

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              各位大神此设计有什么毛病吗,能麻烦你们帮我指出来吗?$ J! V: C( q! E6 G" r
  设计要求,40秒倒计时,9秒之后3秒一次的SOS警示,我调试之后蜂鸣器不响,怎么回事,跪求大神指教!!!!1 k5 S. d' a3 c. A0 \4 l; p+ ?
module led_rxd(clk,rst_n,SOS_En_Sig,led,led_seg);. b1 p- _" q) K
input clk,rst_n;
, I2 x* C  i0 q  h5 {' M! U. O7 poutput [7:0]led;; |- F7 S& z1 m! d
output [5:0]led_seg;
" x/ q8 P/ e! Y/ }1 ]& ?, P1 F, g; Toutput SOS_En_Sig;
1 ~& _0 H7 z  ^8 Z! {parameter seg_num0=8'hc0,( U8 p6 j$ W& }! ?7 z" L
          seg_num1=8'hf9,
3 b+ p8 x- A6 K% _# D    seg_num2=8'ha4," g( L  R9 D6 z2 z
    seg_num3=8'hb0,& Z+ N9 V& F5 f! N+ w
    seg_num4=8'h99,: D$ }  T. l0 V5 h$ v" W2 W; ~
    seg_num5=8'h92,! Y1 y! Y. u9 b0 h# y5 |9 v
    seg_num6=8'h82,
6 I! b* Q- B6 C* @7 V6 _2 e    seg_num7=8'hf8,$ [& x2 i3 `& X* d4 [, ?2 S, }! M
    seg_num8=8'h80,
" \" n8 R- h5 Q3 B    seg_num9=8'h90;
- P/ P1 h5 {  j- T8 Tparameter seg_en0=6'b111110,
" \' e0 q" H0 }4 }0 G$ r7 C          seg_en1=6'b111101,
) Z- ~- y  L9 u( \    seg_en2=6'b111011,/ W! d/ j$ B0 @# R# V$ e2 _
    seg_en3=6'b110111,
* G9 g4 }' m+ K- D9 g$ a% j    seg_en4=6'b101111,
9 j+ E) Y4 u0 V* q9 c: P    seg_en5=6'b011111;
8 a, f; @; {7 mreg [26:0]count;( a( o1 N% R1 e! r9 A
reg [3:0] count1;
) K/ m) R) ~5 T' R: L# Ireg [3:0] count2;1 ^% c/ z' x% g  r$ q
reg [7:0] led_reg;
& u+ m2 j1 b; H) |' X" Z, Ireg [5:0] led_seg_reg;
8 f, Q( `: z; N1 W' `always@(posedge clk or negedge rst_n)
7 e. m% i/ n/ j1 O0 l( \7 D) Uif(!rst_n) count<=27'd0;! Z- d3 }8 I) T; B$ ^! E1 f
else if(count==27'd49_999_999) count<=27'd0;
6 D$ {( b0 c1 h( N3 \. \) Qelse count<=count+1'b1;0 U+ b7 n- J( ~" s7 n
wire clk_div=(count==27'd49_999_999);# e: S) O4 ]% `& }5 W
always@(posedge clk_div or negedge rst_n)+ ^. U2 _) N2 [" K. v2 l4 j
if(!rst_n)
8 k9 u4 o  T/ Z* J! Hbegin; ~8 Z. \! }0 w* z3 \0 U
count1<=4'd0;+ u' p8 O$ {/ R5 y* t
count2<=4'd4;
: ~8 q& _% E4 Z; i: m& q) `  Yend9 H$ B5 P5 b! M! ^( K  ]+ v
else if((count1==4'd0)&&(count2==4'd0))
: e1 B: B. j! Pbegin
9 H, E/ ~+ o) l+ Ccount1<=4'd0;   T, `! s0 R7 ~& q
count2<=4'd4;
- Q! ?/ \' C% `! p# O/ P" Aend
" x: A8 \8 N5 K8 t1 g, J: belse if(count1==4'd0)3 [- s; H! S; \
begin1 Y9 I! y- m) D3 ~
count2<= count2-1'b1;2 L# T2 g! a1 A7 E3 P5 O5 N+ [  T6 U
count1<=4'd9;
1 ^5 {/ E2 |' Q7 hend
& y2 H2 N; C6 Q% X6 e1 E- h6 c( Velse count1<=count1-1'b1;
7 x$ C( Y1 u1 \- S9 [reg [26:0]count_1ms;//
8 B. J8 V# g; V6 Walways@(posedge clk or negedge rst_n)
, h3 F* b/ N) G) z  G* gif(!rst_n) count_1ms<=27'd0;  
" A/ H) ?  W' m  W6 \else if(count_1ms==27'd49_999) count_1ms<=27'd0;8 O3 f! E# i5 I8 `) ~
else count_1ms<=count_1ms+1'b1;2 h7 Y8 J- g$ u& k
wire clk_dis=(count_1ms==27'd49_999);//
5 ^  P8 r, G/ s) T+ N$ X5 P; x//5 f& O3 k- I5 N" f5 E) j( G* ~5 K
reg [1:0]state;
. N( u+ W: f, O) halways@(posedge clk_dis or negedge rst_n)
" d$ w7 S8 t. \' X* A+ Y* P! _$ eif(!rst_n)$ m$ w( f7 F! E% N
begin
3 F' g1 B8 B4 H. I$ Zled_reg<=8'hff;# Z: M2 @' Z" h4 Y* U& _* A! ^3 D
led_seg_reg<=6'b111111;+ v, `2 b/ I; N, |* I
state<=2'b00;
8 z6 }4 f; j# R1 }3 \" ~end' O1 m% z! t3 [5 F( x
else if(state==2'b00)
* t- Y' b! x/ q) v7 k$ n7 qbegin
5 r, v8 D$ u' O- l( R! C1 Jstate<=2'b01;# F4 j+ |" i6 h' W
led_seg_reg<=6'b111101;
9 h# L, _# Y7 ~( C0 b" Zcase(count2)
+ B7 x9 l. L7 G  J6 K# K4'd0: led_reg<=seg_num0;  
2 N* Z- ^2 P0 Z1 z3 P) N5 n3 g4'd1: led_reg<=seg_num1;  - E6 Q: {7 q( K. l& x( l/ u
4'd2:led_reg<=seg_num2;
. }* \/ q& C: C9 J. p) R6 e& }4'd3: led_reg<=seg_num3;  
* H! H; A8 b6 Q9 L2 U4'd4: led_reg<=seg_num4;  
9 E0 k2 h! R8 C0 j1 I: |$ R" r4'd5: led_reg<=seg_num5;  
, |4 z0 p+ `# `6 D. z  ^; Z0 D4'd6: led_reg<=seg_num6;  
- ]9 X1 o& t0 I2 |8 a" h4'd7: led_reg<=seg_num7;  , w* S) a; y- U0 }  x( [
4'd8: led_reg<=seg_num8;   
) t' J9 m' g2 C+ T$ Y4'd9: led_reg<=seg_num9;  ) u0 h' p1 G6 B& ~" y0 O5 ^
default: led_reg<=seg_num0;  ; ]# g# ~; n, L; {% d
endcase
2 e) v0 i" }& N- c; t7 M% Z) qend, M. S9 I; t/ Z% [6 Z
else if(state==2'b01)7 ~9 \! m8 }! m0 |) s8 U
begin , S/ q( ], n# w3 L/ D- K: z
state<=2'b00;0 g1 M1 T9 u2 m9 n
led_seg_reg<=6'b111110;
. N) J% F" l1 S# Hcase(count1)
; `! l. ?( h% z) }% [1 X4 h+ n- F4'd0:led_reg<=seg_num0;" \5 @! X5 f" g2 ^, U- m
4'd1:led_reg<=seg_num1;# W) e4 S# ~( D" [  H! c
4'd2:led_reg<=seg_num2;
) l# F# j5 p6 l" ]/ s; `' a4'd3:led_reg<=seg_num3;! ?1 b  d9 m* s5 U. \( \. m3 Z
4'd4:led_reg<=seg_num4;( m9 V7 w' Z" O3 m0 ?
4'd5:led_reg<=seg_num5;' V0 ]# M! K9 O. ]( C
4'd6:led_reg<=seg_num6;' P' l) N0 X( r' {3 d: K$ J/ _) d/ j
4'd7:led_reg<=seg_num7;
3 I! ?. |- H1 e5 z! @" H4'd8:led_reg<=seg_num8;
7 A% {7 Y. O, Y8 ]  j4'd9:led_reg<=seg_num9;- x% U5 T) v$ T( ]2 h+ v' g" z) ]
default:led_reg<=seg_num0;
  m' f- A. t( ]/ o& i; Bendcase. z0 a% _) Y. u2 k: J1 w+ [6 c
end, Q4 Y* |# M$ X4 E# S# p
reg isEn;% j( t2 S: X# F7 ?1 F* n' I
reg [27:0]count3;
. a, |2 b, C- ]0 g3 o  w2 g4 Salways@(posedge clk or negedge rst_n)2 _6 p* Z/ A3 y( A" w" R6 [9 S' E% m
if(!rst_n)
. S6 s5 B/ p: a( y3 ?begin& t/ C* r. w# h& \
isEn<=1'b0;
$ Y$ S8 j' U% _count3<=28'd0;5 m" N& ?) J" O# n( Z2 A
end& f, P; m! |/ T4 F2 H% @$ U/ z
else if((count2)&&(count3==28'd149_999_999))
5 k( i! }/ p9 p9 |begin
4 `" b- H$ W( Q$ {5 K2 pisEn<=1'b1;
, \3 b& E- D7 J2 L7 d% U( Zcount3<=1'b0;
0 i- F* K- n, z4 w1 u* w9 Lend
6 e- b1 T. z# ?& Yelse* M; D6 F/ a, k6 s( T: v% F" d, T& S
begin
5 C3 Z6 C; {  CisEn<=1'b0;4 [& c: @9 I7 q$ n1 H
count3<=count3+1'b1;" U" u1 z: o& w
end
, J2 d3 W7 N9 J9 r/ q9 d! yassign led=led_reg;
8 U/ U0 S2 z7 L3 {) B) `8 U4 Yassign led_seg=led_seg_reg;
8 e; I6 E" A; D3 T" O8 iassign SOS_En_Sig=isEn;- n% J* Y7 M4 ?9 m2 T  W# {3 N$ B/ d
endmodule
  ~  j7 O' s- h- v/ J2 E  o0 r, {
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