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地板
發(fā)表于 2022-7-18 15:08:19
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library ieee;
4 W! ?) x7 W( \) ouse ieee.std_logic_1164.all;
7 t9 I* i' [2 C& p: Uuse ieee.std_logic_unsigned.all;
, X, S; W* g, ^+ b7 q( V7 a" oentity decoder is" [. ]2 ~$ Y; [7 M0 u1 F$ m# y
port(clk20mhz:in std_logic;
* n# a. _% Z: r2 Z# U9 { p money_in:in integer range 0to 8000;
0 a" j4 A) ~, A" u5 y# k6 t, cdistance_in:in integer range 0 to 8000;
6 k) O, w0 L; ?scan:out std_logic_vector(7 downto 0);
4 {; s3 f r3 l. o6 s2 y4 Xseg7:out std_logic_vector(6 downto 0);
' z o" y/ o" c& q" e5 s& ?9 a: Fdp:out std_logic);
% N; E/ Y& q8 \ Dend;6 T1 q- X1 c% E, h3 v
architecture one of decoder is3 Z6 f* v, I: e! U# e
signal clk1khz:std_logic; A# V! ^/ l* r* @: W# L2 f
signal data:std_logic_vector(3 downto 0); ) `6 P2 H& ]2 A. K. N
signal m_one,m_ten,m_hun,m_tho:std_logic_vector(3 downto 0 );
+ Z& p: l; V9 ?# T$ W7 H- qsignal d_one,d_ten,d_hun,d_tho:std_logic_vector(3 downto 0);
; T6 {+ c) S& m- c4 xbegin% t9 ^2 a5 O! M
process(clk20mhz)+ r* w& D, {6 P0 A+ {+ S: X) h
variable count:integer range 0 to 9999;: ~( U. a( ]. z7 L2 c
begin! O, f4 q! J2 Z2 k
if clk20mhz'event and clk20mhz='1'then
+ A$ \5 F" ]0 \. ~ if count=9999 then clk1khz<=not clk1khz;count:=0;1 z- O5 o0 W- Y# y( d
else count:=count+1; O9 B! D" `* o
end if;
" y4 j6 V# W" {; F/ kend if;
/ O7 n: o4 n# ?% D+ ~end process;- B& h% k! R5 B! i- ^2 }- Y$ N7 [# X
process(clk20mhz,money_in)- e: R8 w1 w8 n. m H
variable comb1:integer range 0 to 8000;
$ k5 p1 |1 `6 w8 {; O variable comb1_a,comb1_b,comb1_c,comb1_d:std_logic_vector(3 downto 0);+ t) p, `" Z) c+ Z- o; A4 d
begin
5 a3 F( J2 y( J: p) G; Bif clk20mhz'event and clk20mhz='1'then# H: C( \0 P' Z# v5 P
if comb1<money_in then/ {7 m9 ?* h/ s; P9 r
if comb1_a=9 and comb1_b=9 and comb1_c=9 then
: R7 h- D3 \$ v% r( A comb1_a:="0000";
g3 Y/ [. o* L. d1 {8 S8 w1 ncomb1_b:="0000";0 ~+ L4 ?2 g' A& y$ s& h
comb1_c:="0000";+ `, r& R( l7 y: ?
comb1_d:=comb1_d+1;" g c6 W* M# O' J( e' q. I% [9 f' m
comb1:=comb1+1;( K' X8 _/ p$ L
elsif comb1_a=9 and comb1_b=9 then7 O' r1 \9 T, O) F% h7 i
comb1_a:="0000"; ^' x/ p, I% _7 i; i
comb1_b:="0000";
6 F" \5 j1 E- L3 e- k7 g. @comb1_c:=comb1_c+1;" X6 P& c$ b% K5 G% p% |9 I
comb1:=comb1+1;
# i4 M1 \6 h$ Felsif comb1_a=9 then
/ K! m0 U% ~/ B$ X' T comb1_a:="0000";
5 S! S* B* |) x7 zcomb1_b:=comb1_b+1;
- {+ J$ M3 p5 D; Z7 Acomb1:=comb1+1;0 y, V2 }7 }8 [2 X7 O' u
else
* j$ q) N) N- y2 j- C comb1_a:=comb1_a+1;8 s# V0 z0 E' ?. Q, x, E
comb1:=comb1+1;
/ k" U+ J0 U3 a/ ?( E end if;
9 H- V6 t8 x; I; q3 H9 @( Z2 E elsif comb1=money_in then
# i! W x# C+ C/ a m_one<=comb1_a;7 t1 l" |/ A6 c( H
m_ten<=comb1_b;: k8 H6 R" `1 H' j$ A
m_hun<=comb1_c;
* j7 ?2 Y5 @9 c3 K9 p. m+ Dm_tho<=comb1_d;8 `/ L/ f8 ^0 ?+ d4 z
elsif comb1>money_in then5 d* t5 u" L k& T
comb1_a:="0000";! l* @* D [, P) U
comb1_b:="0000";8 p8 h3 s; `1 G6 A' i+ T9 P2 u6 q/ @
comb1_c:="0000";3 h, }0 X/ U$ d+ a; J
comb1_d:="0000";
( p2 Z, T4 B8 d! icomb1:=0;- @3 d! `+ K/ b* H, c+ z
end if;3 ?2 _" ^# c4 `' S
end if;' x& q- y* s7 Y! L
end process;
@& Q0 |1 K1 }0 Aprocess(clk20mhz,distance_in)8 [. F) Y7 _! u" h- J6 ^5 B
variable comb2:integer range 0 to 8000;# z& k& H y5 O9 M( N1 [
variable comb2_a,comb2_b,comb2_c,comb2_d:std_logic_vector(3 downto 0);
g( n; p# Q: J. ]begin; ]5 F) m3 v% `
if clk20mhz'event and clk20mhz='1'then
' t5 a0 R i8 L; D! z, Y: e if comb2<distance_in then
) r# D$ E+ p* R8 s+ Z if comb2_a=9 and comb2_b=9 and comb2_c=9 then' e; e1 [# t6 R- A/ T1 b( g" s
comb2_a:="0000";
2 K/ X6 T+ k/ |' {$ M3 R3 } comb2_b:="0000";
3 x; e$ s. c" H0 `, c7 d J comb2_c:="0000";0 ?( r) i$ [3 Y% E/ ?
comb2_d:=comb2_d+1;
( `7 c7 E2 K' `( \# I comb2:=comb2+1;
9 \' g3 \1 {( F$ L" A# A; {elsif comb2_a=9 and comb2_b=9 then
# A$ j+ L4 X$ j" I* @ comb2_a:="0000";
9 c$ m2 U5 O" X$ K' U# J/ t comb2_b:="0000";' w0 M; j8 Z f0 c+ ^- j2 b% a
comb2_c:=comb2_c+1;$ o! W {, x' f4 n& S, \
comb2:=comb2+1;5 C5 ^# D& t% ^/ D4 p D
elsif comb2_a=9 then
( R6 M; V, H$ [" D comb2_a:="0000";% @6 r: J( e! j/ A
comb2_b:=comb2_b+1;; S& m) L, u: j
comb2:=comb2+1;4 }- z0 B- w8 p, {6 D/ I
else& X9 J/ n' C8 Z: z I4 o: ^* k- l
comb2_a:=comb2_a+1;
0 v! a2 l( O7 Y a' N( ^, P comb2:=comb2+1;* _+ f6 ~* O# K i' O" p$ _
end if;+ X6 U* b/ v! ~+ }" F; Q+ }8 K& x0 Q
elsif comb2=distance_in then1 z. a* z- k* o+ N9 L3 U
d_one<=comb2_a;
* }# W9 X6 M0 J6 ^ d_ten<=comb2_b;
$ g8 F3 H9 \" V y5 t& r) o) ? d_hun<=comb2_c;* n' a2 Z5 w6 b
d_tho<=comb2_d;' z: C3 {# C6 S& B' Y
elsif comb2>distance_in then: U+ W) _% v: J8 o
comb2_a:="0000";
1 @) S, l$ b6 y. L9 W comb2_b:="0000";- B2 h# P6 v" P2 H/ ~: Y, D8 V9 N
comb2_c:="0000";
* D9 \" O: z9 _; o! j* R comb2_d:="0000";. l" \5 D& Q! |" [* n
comb2:=0;/ e( G* Z9 B+ I. ^9 H! }+ m1 \
end if;. u, A3 G7 j t* R: Z. i% N
end if;; [# ^& e# P! M2 z
end process;
3 B5 _2 k# J8 L; |5 C& s0 ~* `6 sprocess(clk1khz,m_one,m_ten,m_hun,m_tho,d_one,d_ten,d_hun,d_tho)
2 F' R' O W% o$ S$ hvariable cnt:std_logic_vector(2downto 0);
: x" x6 P0 O2 O% ?begin3 k4 W" H! d( _* g6 m! ^0 z
if clk1khz'event and clk1khz='1'then+ w# s. f* Y' o# J. n& b. h& z: M- [
cnt:=cnt+1;+ e6 ^+ V9 q) ~/ ]- d' h7 o. {
end if;$ [% B* a' {4 j# D% f' [
case cnt is
+ u4 a- C6 [, l' w3 Q when"000"=>data<=m_one;dp<='0';scan<="00000001";
5 {0 C9 j+ _* v+ [; x- K7 k when"001"=>data<=m_ten;dp<='0';scan<="00000010";. e! _3 q) f+ P* w: W! Y
when"010"=>data<=m_hun;dp<='1';scan<="00000100";
' o& W6 |/ e2 B% C) F* y/ R when"011"=>data<=m_tho;dp<='0';scan<="00001000";
}7 r M4 Z5 L when"100"=>data<=m_one;dp<='0';scan<="00010000";
$ L/ g8 O) J0 z0 P% \- [$ u- b/ @# S& y when"101"=>data<=m_ten;dp<='0';scan<="00100000";
" O/ G0 a- w; [* K; _ when"110"=>data<=m_hun;dp<='1';scan<="01000000";
9 e# Y6 Q h2 J when"111"=>data<=m_tho;dp<='0';scan<="10000000";( E2 @5 I1 ?4 f
end case;
) I C b7 b8 ~8 ?end process;
. B/ n$ ^0 G1 ~process(data)
4 _, ` S) R" \begin; p5 H# y0 y/ t' j) q/ n) N
case data is5 v3 _! y5 J+ j# g' H
when"0000"=>seg7<="1111110";
/ x7 \$ a, ~2 b+ S& R+ Q when"0001"=>seg7<="0110000";, K! z, _3 b8 a: `; f
when"0010"=>seg7<="1101101";/ `, t# T0 Y& S4 U7 l0 I
when"0011"=>seg7<="1111001";
( h0 f N- y- n ^7 i* A2 } when"0100"=>seg7<="0110011";# D8 p; |4 S" i, h/ ?: w9 N' t
when"0101"=>seg7<="1011011";. s+ `3 G3 S; \; a
when"0110"=>seg7<="1011111";# M! V6 [: H8 C, C) j6 L
when"0111"=>seg7<="1110000";- V# A# l8 Q/ D
when"1000"=>seg7<="1111111";2 U9 X# t; b4 F3 R- h
when"1001"=>seg7<="1111011";
8 X ]* v9 t6 R. { when others=>seg7<="0000000";/ c8 A* A2 ?& Q1 F" G1 \! z* M
end case;# A; l/ v; q2 d U+ A
end process;
9 W, u0 Y! }0 _0 i: s5 w# ?. Mend;' Q: L9 V$ l0 V( z; e2 |! Y1 W
2 Z7 S- W7 C$ j1 I; D' Q; `. ~6 U# N, m
: m, z8 Z+ `, \2 D! |( i; E8 e* }+ k9 F
" C$ P/ R$ d3 V' d2 K, y: q第二個(gè)程序是這樣的 |
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