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地板
發(fā)表于 2022-7-18 15:08:19
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library ieee;5 _5 C g- v1 U7 z9 l5 H2 S) ]
use ieee.std_logic_1164.all;$ y5 S/ Z# {8 o z0 l, _
use ieee.std_logic_unsigned.all;% y7 C) K L4 E+ B% ?3 t) M& G, |
entity decoder is
, c& M+ }; _9 O$ L; Dport(clk20mhz:in std_logic;
8 M/ f3 H# B' ?$ @5 U: ?7 q4 A money_in:in integer range 0to 8000;
: ?+ x. L9 \+ Rdistance_in:in integer range 0 to 8000;
# d6 [4 Y% p9 pscan:out std_logic_vector(7 downto 0);
0 z- |; D: `/ [: U useg7:out std_logic_vector(6 downto 0);
; t6 ^8 i; j5 J4 D$ K" fdp:out std_logic);* ^8 @+ k" E& y$ l
end;$ C- E0 I& \8 z- U$ f
architecture one of decoder is
1 @! s% i& K) G; _- d signal clk1khz:std_logic;
' B* u" ^; n# Psignal data:std_logic_vector(3 downto 0);
- z+ u$ N& Q7 ~2 L0 \8 bsignal m_one,m_ten,m_hun,m_tho:std_logic_vector(3 downto 0 );$ | p5 D2 @) S' ?$ p( l1 }- x% {
signal d_one,d_ten,d_hun,d_tho:std_logic_vector(3 downto 0);) Q Q( f' T) \9 ~7 S
begin
* s; d. {/ O3 X* n4 T+ U3 p$ `( v/ Kprocess(clk20mhz)) c* D% r& L; E- @5 q* r8 }
variable count:integer range 0 to 9999;* {- E! A; c6 v. A/ H' y! L+ Z- H
begin
: T* @* N" G6 _ hif clk20mhz'event and clk20mhz='1'then
$ \, W+ a6 G: O4 g if count=9999 then clk1khz<=not clk1khz;count:=0;
I0 G' g5 o" Q) Belse count:=count+1;: {- w" q) N3 f n3 Z
end if;
' L( l* e0 z& k: c5 Z xend if;
0 C6 d$ R4 |! r* G/ F1 ` {$ Pend process;5 a- S! T% |. c+ H1 u$ E% w
process(clk20mhz,money_in)
% y* S& f! c; E& a variable comb1:integer range 0 to 8000;4 A1 L9 ]7 m9 [- b/ r
variable comb1_a,comb1_b,comb1_c,comb1_d:std_logic_vector(3 downto 0);# b) z& t6 G( a8 E C8 ?
begin
: G. h! I/ X2 B; jif clk20mhz'event and clk20mhz='1'then1 @; t& U$ A% V- k, ^1 B
if comb1<money_in then
5 m4 n, K5 {4 w3 K if comb1_a=9 and comb1_b=9 and comb1_c=9 then( d! U' D: N; }& Q; g# u4 p. ]
comb1_a:="0000";
( S# ?% t& Y, D: S5 x1 I0 Z- pcomb1_b:="0000";5 B, x: J' p9 h
comb1_c:="0000";7 q) x C. t4 L* R+ m( k
comb1_d:=comb1_d+1;
8 t2 Y& ]# H! O9 d1 \5 w; _" Dcomb1:=comb1+1;
, ? n+ X- K% ?8 eelsif comb1_a=9 and comb1_b=9 then
* V$ }9 H: X3 A* u3 I* u7 L# Hcomb1_a:="0000";
2 @; O2 g. k) W" u3 E- Y" W, D$ ]0 R5 Gcomb1_b:="0000";
2 W: Z* O5 K/ G: e+ f" Ycomb1_c:=comb1_c+1;
) i8 L& [" b+ N. R. ? u$ v1 [+ Ycomb1:=comb1+1;
- \9 ]% F( V1 Z, h# h Aelsif comb1_a=9 then
9 U( H1 i2 `2 ^& p comb1_a:="0000";
4 R2 X% a" a: Z# H+ |+ ^5 x5 j0 Jcomb1_b:=comb1_b+1;
0 q6 c/ Z9 Z( icomb1:=comb1+1;
8 D/ ~+ J, A+ d" g else
4 G" e Y; f; p ?( X8 G$ e comb1_a:=comb1_a+1;" h6 ]) y) K2 D; d4 p( f7 }/ M' b! R& K
comb1:=comb1+1;
( \/ u: O! i1 M, P! p4 k: k end if;6 \6 [/ y/ Q8 Q
elsif comb1=money_in then
6 r2 ^3 Z( _) t9 S9 O5 q5 h. o2 ] m_one<=comb1_a;( r2 ~. T. E& C9 ?9 o; q. W' P
m_ten<=comb1_b;
% @8 b* G i; @: y4 j) Dm_hun<=comb1_c;
" ?# _: C1 j9 Um_tho<=comb1_d;. u2 a* g; S L. L/ X
elsif comb1>money_in then
! C! S% H3 J: k! Q, L P comb1_a:="0000";
& x. x; n7 c6 F' n; [, i comb1_b:="0000";: W/ ]+ N" R) z4 u) z! z
comb1_c:="0000";
8 i" B2 p( Z# R. E# f% d comb1_d:="0000";5 n# W/ J: L" ?9 g8 n
comb1:=0;
^9 a0 m" t; G% eend if;
5 Q# ]$ E% u3 c" X% `" vend if;2 c' M5 L* b6 F \3 o5 F' r
end process;
8 _$ N9 _- K1 }$ f% q8 Lprocess(clk20mhz,distance_in)2 y1 ~7 M3 ]% |2 D: x
variable comb2:integer range 0 to 8000;; g' E9 V4 h9 o# s& d
variable comb2_a,comb2_b,comb2_c,comb2_d:std_logic_vector(3 downto 0);
4 ~! U! \) E* o6 v! Q, b# }: R. tbegin6 u/ H s, R# e
if clk20mhz'event and clk20mhz='1'then- S! g) u$ C+ Y$ w# [4 r
if comb2<distance_in then) t5 s" W3 R' {& t9 Q5 d6 A
if comb2_a=9 and comb2_b=9 and comb2_c=9 then
. W% i: m: x. C# v b; s comb2_a:="0000";
U6 \6 |6 o8 ~( e, f comb2_b:="0000";% m6 v8 f* s. ^4 A: r- O' |
comb2_c:="0000";
; D: o S; E [2 z: Z' D! b7 b5 E comb2_d:=comb2_d+1;, w1 w3 M5 r/ a, A
comb2:=comb2+1;
2 S+ k" W% j( V9 h# velsif comb2_a=9 and comb2_b=9 then
% u% f5 k# ?' [, t& x comb2_a:="0000";
1 ^ l. [, ]1 S9 W# P comb2_b:="0000";
% u5 J1 q3 x" Y% L) Q0 y% T z comb2_c:=comb2_c+1;+ X: M$ }* Q' l
comb2:=comb2+1;
# N; c; i* _+ Y) x% Gelsif comb2_a=9 then" R, V8 R9 @% ~$ R8 u
comb2_a:="0000";- y, l, l! Q9 {$ _) r$ V& }/ O
comb2_b:=comb2_b+1;
8 [8 G1 \3 S0 n! S comb2:=comb2+1;6 k3 \' `' b! A5 Q# Z$ R' K
else
. ^4 l% E4 n9 S7 E: S comb2_a:=comb2_a+1;
2 C7 O. X3 F& y0 I& }; } comb2:=comb2+1;
% Z. n6 Y; Z) d/ j& Y2 Z: ^end if;
7 S1 C5 o/ H0 r0 H2 \ elsif comb2=distance_in then3 ]1 y1 J3 Y1 w$ \
d_one<=comb2_a;; ^3 w9 c T S! c; e+ M0 }7 Z* K
d_ten<=comb2_b;
- ~% D, ]0 \* b' k+ m3 x) Q d_hun<=comb2_c;
' c) u) i3 n. H x; T6 ^; Q! m d_tho<=comb2_d;
& ]& p) P: i: I# qelsif comb2>distance_in then
' S* j5 @' ~: z! ~/ W' [$ R comb2_a:="0000";5 S: ~& y' l" `5 a+ A+ P9 f1 n/ f
comb2_b:="0000";1 Y3 t, ^" C2 U- r& T6 W
comb2_c:="0000"; b$ f' u& j, [' A+ `
comb2_d:="0000";7 B# U# ?" M9 J; ~% ?: B
comb2:=0;
+ `" W* K' R) v7 v$ s" ?9 n; h8 z end if;
2 |) n' h9 z. S- E1 Tend if;/ c! q! h( F ~! D- {$ T
end process;
" L: a% S* P! J$ F! }- pprocess(clk1khz,m_one,m_ten,m_hun,m_tho,d_one,d_ten,d_hun,d_tho)( s, k, ^% v* H% @
variable cnt:std_logic_vector(2downto 0);" r. ^+ e' u/ H8 f1 s# J/ h# q; T" \
begin
1 o( S8 Q5 L5 {) z. iif clk1khz'event and clk1khz='1'then
3 O: g2 q+ y- [ cnt:=cnt+1;1 A9 i0 a2 ?* T& e
end if;; p$ ?. i/ X- \' q5 o4 C6 V( ?
case cnt is
5 c# o* V/ O1 }1 c+ z) f/ V: I when"000"=>data<=m_one;dp<='0';scan<="00000001";
$ X9 g, c1 b: O9 Y8 v# Y1 v$ b when"001"=>data<=m_ten;dp<='0';scan<="00000010";, J Y4 K6 p( b* \
when"010"=>data<=m_hun;dp<='1';scan<="00000100";
+ O) H0 u4 K6 O- s; t5 J- j when"011"=>data<=m_tho;dp<='0';scan<="00001000";
+ y7 o& L# p9 ]& k" b when"100"=>data<=m_one;dp<='0';scan<="00010000";$ J! K6 }5 ]" @5 C& c2 a
when"101"=>data<=m_ten;dp<='0';scan<="00100000";
& ?. U% Z7 o/ n# D( f* t8 b when"110"=>data<=m_hun;dp<='1';scan<="01000000";
/ J" S6 \0 L* i. Z/ Y( X7 o# u when"111"=>data<=m_tho;dp<='0';scan<="10000000";2 I7 E% I9 _2 J1 ]
end case;
6 Q/ K9 [; r- T+ N" fend process;9 p) Q' w7 ?$ R8 p0 C7 X' O
process(data) |) v. k) A" U9 x- p- B& r* v( u2 X
begin* ?4 [3 g* a+ r* g( d
case data is
8 ]% v: U. q y& D when"0000"=>seg7<="1111110";
# r# b6 \8 p% K9 O when"0001"=>seg7<="0110000";! _, \1 w) [+ l/ o
when"0010"=>seg7<="1101101";
7 H3 ^- K$ L' V0 v( C when"0011"=>seg7<="1111001";
_5 E+ S+ g! o when"0100"=>seg7<="0110011";- s" [' [) N! d' l8 h: F. b
when"0101"=>seg7<="1011011";
( ^: a: I2 K, P when"0110"=>seg7<="1011111";
1 Y6 H" y% u6 v( l2 d3 z7 u when"0111"=>seg7<="1110000";. j2 \2 V8 e) Y# k+ T
when"1000"=>seg7<="1111111";4 k5 @. y( |3 [- b6 I/ p- D8 A: `
when"1001"=>seg7<="1111011";
( |) F7 ^! @ q) V I5 n* W. [: t when others=>seg7<="0000000";
$ n/ V4 h, a" U/ {3 [3 _! {end case;3 L: A( b3 G; ] [
end process;
W, @/ a3 T/ [0 y1 E# Jend;
( |3 w$ E$ R) Z9 a, m+ Y
/ ]+ G' [8 o, y4 D5 o# H
% R, a( e8 [' w; P! b* L6 @ H; J, _/ L- ]% l @ T
& P+ S$ I# A* d& g* V第二個(gè)程序是這樣的 |
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