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module _7segscan(clk,dataA,dataB,dataC,dataD,segd,sel);
# S+ w! T F3 \* u! Qinput [7:0]dataA;
" d, ~5 R2 @1 V u7 o$ Hinput [7:0]dataB;
$ T6 r2 F: k* Vinput [7:0]dataC;- e4 s. A6 b8 o* h8 j- Y! e
input [7:0]dataD;
0 }2 ?$ R6 n) F/ t8 Q0 A1 Rinput clk;
9 ]9 u5 P8 x& A9 {% b/ Noutput [7:0]segd;
: S0 G# E N# e# b# Y0 t7 doutput [3:0]sel;: Q# S, }0 O, q4 _6 X3 \
reg [7:0]segd;
9 J# n1 d# L) Y6 \; k- L9 e6 greg [3:0]sel;
$ b% q2 v2 ^: p+ f2 P- B8 Nreg [1:0]i;
* x3 H& `$ R! `% D9 ?& K[email=always@(posedge]always@(posedge[/email] clk)
) } [. a6 `% S6 O% sbegin
& ~3 r* m' A0 `/ i* i9 @i<=i+1;
1 w/ w7 R/ b) }- m' I2 Y- a& l4 Ycase(i)
+ s5 W- G! G* J% x6 H2 ~1 M! C" G 0:begin segd=dataA;sel=8;end% f! ?. t3 \6 D
1:begin segd=dataB;sel=4;end
+ {7 q* a9 f# v 2:begin segd=dataC;sel=2;end
. U6 S/ b7 p4 I, B" T5 N# t$ S 3:begin segd=dataD;sel=1;end
0 H" d+ B/ [* |0 m default:begin segd=8'bx;sel=0;end9 ?# y3 ^* f% ]' V5 y
endcase6 Q/ B- [: R2 t5 V9 l1 V
end0 H6 |: V% I1 F6 M
endmodule
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1 I x% A4 T! I8 X X这个是Verilog 的,VHDL的没有;;;7 B$ B- Q# F& C" X
刚学VHDL,很多概念;分析方法多不知道;
! b2 p* s2 L3 E5 Y+ h% U/ J! P! X有时候把问题想的很复杂,让自己陷入困境;更难写了
; g' x/ ?( L4 u$ s- k" sVHDL的8位数码管扫描显示电路 有头绪了,但还是写不出来;没有输入端口直接显示会了;3 \, V* ^9 t1 H& j6 a
但是有输入。老是把它想成锁存,每位多要带锁存器硬件电路; 2 Y5 d3 }9 k: k! P4 z9 A$ k) h
写软件的时候老是想着硬件电路,怎么样也想不出办法
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2 u7 U4 C& z) {0 @- c今天早上在写。。。
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zyunfei 威望 +10 谢谢版主 ,不过上面的不是原创内容;今天下午用VHDL写了个8位数码管扫描电路;编译通过了。不过有不少waring;
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一个人孤军作战一个字 累!!!更更何况我是新手;新手也寂寞啊) O+ Z' X3 j5 K& B/ \
Warning: Timing Analysis does not support the analysis of latches as synchronous elements for the currently selected device family3 Q7 i% D4 g6 p* Z+ `' S$ U4 L/ D
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Warning: Found pins functioning as undefined clocks and/or memory enables Info: Assuming node "CLK" is an undefined clock, j9 ^% v% {. G9 S
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不去掉仿真设置下的的CHECK OUTPUTS仿真的时候会出现如下错误:请高手指点一二:
0 O) ]7 g! i. ~( I) m1 iError: Simulation results from F:/VHDL/LED_SCAN/db/LED_SCAN.sim.cvwf (0 ps to 1.0 us) do not match expected results from vector source file F:/VHDL/LED_SCAN/LED_SCAN.vwf& g4 B: b3 Y$ t$ E, \& q7 c A
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/ r x+ A- P! Q9 x由于不会做仿真最后没有仿真,序列信号多不会赋值,晕死了; 大家会就教教我把!!!/ @/ x/ A% n/ ?
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数码管是共阴的,位码大家自己看下是不是对应起来了!!8 j' p" u& U9 E1 K. l X! E
此程序不带译码功能,直通输出;
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如果你使用的是7064(64个宏),那 Error: Can't fit 67 registers in device ;哈哈,资源不够4 x$ h; V; q* e' x
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* `- G+ J0 b& v6 B& Q4 a. F/ u下面是完全自己写的源码,没有在目标板上试验过。 复制代码的朋友要注意了!!!
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6 t6 v& v( F5 W; ~0 JLIBRARY IEEE;
# g% B1 Z% N: Z, k$ p+ hUSE IEEE.STD_LOGIC_1164.ALL;# \2 S* K. M3 F8 t) _ e
USE IEEE.STD_LOGIC_UNSIGNED.ALL;0 `) z2 D, |/ W6 [- z" {" T' J
USE IEEE.STD_LOGIC_ARITH.ALL;- T( \8 B; w; Y7 \' ]( Q- `. a
: l, j; r- N, T. h) FENTITY LED_SCAN IS/ M/ t% [: H! F# a0 k/ g
PORT(4 k, z' W9 _/ U, L; p# g
SEG7IN:IN STD_LOGIC_VECTOR(7 DOWNTO 0); 6 Q& {6 y g% [0 C+ ^
SEL:IN STD_LOGIC_VECTOR(2 DOWNTO 0);; L$ \. G" c& n5 V6 z. ]( r
CLK:IN STD_LOGIC;
" G5 K7 S' V6 @% B. B2 B SEG7OUT:OUT STD_LOGIC_VECTOR(7 DOWNTO 0);
9 K( E, g; D. u+ x/ ^& N SCAN:OUT STD_LOGIC_VECTOR(7 DOWNTO 0)7 L. _' h* V6 C" y: E$ d
);
* r1 ~ D) R8 o2 w9 v0 q0 z1 }END LED_SCAN;
/ }8 `% {" O# M# b9 bARCHITECTURE BEHAV OF LED_SCAN IS
( v8 {, F+ r* o& s& BSIGNAL cnt8:INTEGER RANGE 0 TO 7;0 d# v2 P! M5 R
SIGNAL TEMP0,TEMP1,TEMP2,TEMP3,TEMP4,TEMP5,TEMP6,TEMP7:STD_LOGIC_VECTOR(7 DOWNTO 0):="00000000";* O) v L9 O4 B# }
BEGIN( b7 B! m$ r0 ^! `7 b/ L
PROCESS(CLK)! w/ e( ^/ e3 D& l8 J. `1 q! B
BEGIN
( T4 ?5 o; ^: {, _IF (CLK'EVENT AND CLK='1') THEN$ Y1 n R7 K! f3 G0 H9 d) w
cnt8<=cnt8+1;
! g% X+ b& ]" X2 \END IF;
# N2 U6 T6 R6 m3 f4 SEND PROCESS;2 O9 b5 o% u5 p2 X/ }1 }
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PROCESS(CLK)+ U& r7 _- g6 U1 A1 a% e7 C' E
BEGIN3 C% q$ H5 h L `! l
IF (CLK'EVENT AND CLK='1') THEN% | Z5 i8 o: {
CASE SEL IS' Z/ @# {( I |1 j: w- K. N
WHEN "000"=>TEMP0<=SEG7IN;
0 u; a' Q5 k# O L) ?WHEN "001"=>TEMP1<=SEG7IN;9 Y3 S4 p" J# V+ G. Y
WHEN "010"=>TEMP2<=SEG7IN;7 S0 f* Q+ `( o1 [0 X2 n
WHEN "011"=>TEMP3<=SEG7IN;
: C, A% R5 ^3 E# A( h0 yWHEN "100"=>TEMP4<=SEG7IN;) n9 G9 D1 X/ ~& x4 }1 V: }. d( |
WHEN "101"=>TEMP5<=SEG7IN;. L5 ?5 d- J4 b- Y u# c2 r
WHEN "110"=>TEMP6<=SEG7IN; b; m( U! P2 k N4 l
WHEN "111"=>TEMP7<=SEG7IN;
; `6 T' @3 L8 G$ C* l- AWHEN OTHERS=>NULL;3 c i4 F9 z( n& X7 B0 K$ c/ j
END CASE;
/ x% c7 F) b! g* O2 n3 L9 o9 u( k+ X$ SEND IF;' x6 ^# ?5 v/ B. X7 C
END PROCESS;
. x0 g4 T6 L; Z6 ?process(cnt8,TEMP0,TEMP1,TEMP2,TEMP3,TEMP4,TEMP5,TEMP6,TEMP7)$ x* `7 p+ @- M, c' V3 o* t) s3 G; ?
BEGIN: C- x& z7 V' T' D. u, A
CASE cnt8 IS+ M n" G/ @4 h( {" i
WHEN 0=>SCAN<="01111111";SEG7OUT<=TEMP0;
3 `* l" C1 w) w1 j& i- l$ [( d WHEN 1=>SCAN<="10111111";SEG7OUT<=TEMP1;
h0 G1 B, q6 W# d+ N3 A WHEN 2=>SCAN<="11011111";SEG7OUT<=TEMP2;
4 C. A" I9 |" o w9 G WHEN 3=>SCAN<="11101111";SEG7OUT<=TEMP3;
+ c& ~3 ]. l+ P/ P, K WHEN 4=>SCAN<="11110111";SEG7OUT<=TEMP4;
& O" T+ D3 l) D* K: N& [ WHEN 5=>SCAN<="11111011";SEG7OUT<=TEMP5;
1 Y; e+ k9 ?' ^8 w WHEN 6=>SCAN<="11111101";SEG7OUT<=TEMP6;
K0 T( R. e' y2 \+ f) I: ~. M WHEN 7=>SCAN<="11111110";SEG7OUT<=TEMP7;" n3 W4 p2 x) G- [9 h% K( f
WHEN OTHERS=>NULL;, a3 z$ c# G$ j$ T9 ^ d+ T
END CASE;/ q$ A3 F$ ~( h m
end process;
, |. o0 L" l) U( d. y: FEND;5 T) C% H! M5 W4 {! V2 G
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4 f- w0 }1 I5 J, U# C$ {现在又发现没有带一个写入使能;所以就加WR信号,当WR为1的时候允许写入,当7位写完后置0,此后不管 SEG7IN ,SEL 为什么多不会进行写入;0 W6 c/ C* c/ a! Q
这个东西断断续续 搞了我一下午, 哎,,很久没有这么投入了的做一件事情了!!!: G; t3 r4 E& Q
现附上源代码:- h+ `& c. ~ f8 ]
LIBRARY IEEE;
" i2 i+ ^1 ?/ n* Y7 WUSE IEEE.STD_LOGIC_1164.ALL;
$ A9 C: }' {2 R+ e0 K) R' @) ^USE IEEE.STD_LOGIC_UNSIGNED.ALL;
! w) E ?( n G- OUSE IEEE.STD_LOGIC_ARITH.ALL;2 G! }5 j! V a7 T' B! n, J
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ENTITY LED_SCAN IS
% K0 \5 w* H) g" vPORT( ! W- V F# ]8 v) A
SEG7IN:IN STD_LOGIC_VECTOR(7 DOWNTO 0); + T4 ?4 i2 p7 M
SEL:IN STD_LOGIC_VECTOR(2 DOWNTO 0);
* @* D) P+ ~5 D. ] CLK,WR:IN STD_LOGIC; $ ^& X; l. x. v8 P" i) l$ @5 @
SEG7OUT:OUT STD_LOGIC_VECTOR(7 DOWNTO 0);* b: N4 p0 v/ u/ d3 G3 g# C2 h% Q
SCAN:OUT STD_LOGIC_VECTOR(7 DOWNTO 0)
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END LED_SCAN;2 A! Y" y# C( G0 V
ARCHITECTURE BEHAV OF LED_SCAN IS
2 b) E5 s. g( H8 ?6 p L9 ASIGNAL cnt8:INTEGER RANGE 0 TO 7:=0;9 g3 A5 c3 w# ?$ Y
SIGNAL TEMP0,TEMP1,TEMP2,TEMP3,TEMP4,TEMP5,TEMP6,TEMP7:STD_LOGIC_VECTOR(7 DOWNTO 0);
* {5 c l6 y/ O: t) ^5 XBEGIN4 `; ^+ b' V+ G9 E0 T9 D) A) R
PROCESS(CLK)- @7 N* J& T( N; l6 F
BEGIN- J) n6 }/ g% z( l! ?
IF (CLK'EVENT AND CLK='1') THEN+ Q+ d6 M% D' T! s% x) o; v
IF WR='1' THEN" ^+ F/ h, F. z6 B5 A
CASE SEL IS
1 I9 w* d& g3 |) t2 SWHEN "000"=>TEMP0<=SEG7IN;8 J, ?& O q0 H$ J/ I* @8 z; m% x9 ^. U
WHEN "001"=>TEMP1<=SEG7IN;
' M1 e- V. _! S9 u0 ^WHEN "010"=>TEMP2<=SEG7IN;
% O% {9 i% C# Z- c: |7 e7 HWHEN "011"=>TEMP3<=SEG7IN;% a$ J& u l& [& _( }. p
WHEN "100"=>TEMP4<=SEG7IN;
6 q7 x% k3 J1 @* m% o! ?. VWHEN "101"=>TEMP5<=SEG7IN;
4 Q. b4 N4 e, u6 bWHEN "110"=>TEMP6<=SEG7IN;6 ~, g- R" k. m3 d. r9 t
WHEN "111"=>TEMP7<=SEG7IN;
H5 u$ b4 Q. KWHEN OTHERS=>NULL;$ f& ?5 o" q# y$ W y4 q# N
END CASE;" E2 s; f5 g' y) A( H; @! i9 @
END IF;; a/ `" ?) u4 W; i
END IF;
6 @4 V" | F7 j1 f6 y7 T8 yEND PROCESS;0 Z( V* g5 G: K5 t
PROCESS(CLK)( T1 L! N1 g2 e3 r( h3 X
BEGIN
: G, T+ x( B& F' D1 `6 |% {IF (CLK'EVENT AND CLK='1') THEN# J7 O! G, W, B6 ~6 M f* H/ f
cnt8<=cnt8+1;
8 `) S3 h" N, d* i7 y' W- IEND IF;2 N- y) ]( c' ~# Z/ G K
END PROCESS;
/ \ X9 ]% C; L5 Zprocess(cnt8)$ U: P: A( f/ R: V& y
BEGIN
4 D/ S) G; _& Y9 f8 l+ [) o' x CASE cnt8 IS
: ^$ F, a' }2 H, g- Z WHEN 0=>SCAN<="01111111";SEG7OUT<=TEMP0;, C) s0 \9 H6 F8 m0 X
WHEN 1=>SCAN<="10111111";SEG7OUT<=TEMP1;
( d2 g$ a u7 _' V6 N WHEN 2=>SCAN<="11011111";SEG7OUT<=TEMP2;
! @) k& {" R+ P) h WHEN 3=>SCAN<="11101111";SEG7OUT<=TEMP3;7 y* A' q' V4 i1 T# h2 E# }
WHEN 4=>SCAN<="11110111";SEG7OUT<=TEMP4;0 I$ ~0 b6 ~) e: l2 @; o
WHEN 5=>SCAN<="11111011";SEG7OUT<=TEMP5;
F: J' X" C$ U/ J. h" x; C WHEN 6=>SCAN<="11111101";SEG7OUT<=TEMP6;; Q8 i5 M, y# p% H- B
WHEN 7=>SCAN<="11111110";SEG7OUT<=TEMP7;
( \* S' G) v4 a! v" j- c( ` WHEN OTHERS=>NULL;8 r! q9 r6 p2 F" `
END CASE;* ^, L/ k2 H9 c) I( T7 l' u
end process;+ T+ w8 j2 y& k" C3 ^; F# h
END;. X7 H' o+ j6 |+ S, T
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下面有仿真图& L7 L( j: y* `
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附上一张RTL
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% M0 z3 ]9 B" X! T8 E6 A) a[ 本帖最后由 zgq800712 于 2008-12-3 20:23 编辑 ] |
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