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发表于 2022-7-18 15:08:19
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library ieee;' g9 j7 m) _+ t1 }! J& u* m
use ieee.std_logic_1164.all;
4 n$ ?1 T2 @5 J V# N1 n( @- iuse ieee.std_logic_unsigned.all;" y/ P5 ~, e- Q1 P/ k
entity decoder is
. @) `1 K9 S) @ gport(clk20mhz:in std_logic;
) [8 ^" _, R' l" R1 ~9 ?3 j% C money_in:in integer range 0to 8000;- Y/ {- Z8 e( v2 e4 d: l
distance_in:in integer range 0 to 8000;, j3 y6 \: k, e" F F J
scan:out std_logic_vector(7 downto 0);. p% P K& w- Y, \/ u' y
seg7:out std_logic_vector(6 downto 0);
4 E' P8 @- w7 W7 [2 Y1 ~dp:out std_logic);
$ n. u) F" z" Bend;
1 S& \2 l5 ?$ `4 M$ Z sarchitecture one of decoder is2 U9 O6 _' U* k/ z1 C" |
signal clk1khz:std_logic;9 G+ Z+ p! U" t( i
signal data:std_logic_vector(3 downto 0);
/ Y1 [9 ]) K/ U9 c7 W$ vsignal m_one,m_ten,m_hun,m_tho:std_logic_vector(3 downto 0 );
9 z5 I* i3 M, I6 s) usignal d_one,d_ten,d_hun,d_tho:std_logic_vector(3 downto 0);# s# [7 ]5 B: [- T: H7 k
begin- X0 h/ M8 ]# Q, F$ p
process(clk20mhz)! C' I: \' M1 l+ X9 s) x
variable count:integer range 0 to 9999;0 q2 j8 [5 |3 I8 a$ f* C( W8 P' m
begin
2 g# U0 j5 n6 l& _if clk20mhz'event and clk20mhz='1'then
! a+ a. Q5 m, _2 e+ C- d if count=9999 then clk1khz<=not clk1khz;count:=0;
: t9 g+ A% r8 I& x* L8 Selse count:=count+1;0 _0 L! g0 N% n$ ?
end if;. X: i& x5 t7 {/ x
end if;# ]! X' l5 U: ~ q' L
end process;9 t6 ~! {; X g& t; _6 c' g
process(clk20mhz,money_in), k1 P' s: H) A% K2 K
variable comb1:integer range 0 to 8000;* X* T8 t2 ?5 v% E% @( I1 q
variable comb1_a,comb1_b,comb1_c,comb1_d:std_logic_vector(3 downto 0);
5 j% J+ e! O7 ^7 W i$ R1 r9 V1 ?6 Dbegin6 M" _- x7 T0 G8 e
if clk20mhz'event and clk20mhz='1'then
. `4 h/ X* }1 p5 t6 S9 t if comb1<money_in then' i- h" R( z# c0 Y( a5 a, G. }
if comb1_a=9 and comb1_b=9 and comb1_c=9 then0 |! R1 N$ R* w" c5 l' \, x" \. ]
comb1_a:="0000";. Z6 ?4 w0 d% _% T: M$ |
comb1_b:="0000";
7 h3 w7 d- b* F6 P \% Hcomb1_c:="0000";
$ j7 ?6 Q U! H3 t; ]comb1_d:=comb1_d+1;, P) C* z* Z6 F% B
comb1:=comb1+1;, H; ?: S6 @7 ?7 ]/ w' i; p9 O
elsif comb1_a=9 and comb1_b=9 then& H: Z& P- Y! r# F" l
comb1_a:="0000";9 k( ]+ R; O9 u5 g0 B% C @4 n2 ^
comb1_b:="0000";; w* x" y! q4 k3 B
comb1_c:=comb1_c+1;
8 w r6 K6 b) r0 F) K1 q+ f. ncomb1:=comb1+1;
N& R% V; {! R& c3 N/ d' gelsif comb1_a=9 then# z$ W' N: ^4 C2 f
comb1_a:="0000";
+ K8 S+ O/ K+ ~4 G$ `/ y/ x1 [5 ecomb1_b:=comb1_b+1;! C7 b3 i& a q8 @
comb1:=comb1+1;
6 O! V4 m/ t1 j else- f, r# q: n, ~: Y, V
comb1_a:=comb1_a+1;
5 _1 ]+ X# d$ \& r. w1 H3 Bcomb1:=comb1+1;7 _/ u$ k1 o t1 s9 _+ u2 M
end if;7 W; e3 M: `" @
elsif comb1=money_in then, q0 r7 s+ n0 [* _2 H
m_one<=comb1_a;% z+ C: d. j/ F' y) i1 [
m_ten<=comb1_b;. J& g' A" [; t0 t, j
m_hun<=comb1_c;
8 l% K0 H) V( F/ T. w4 `m_tho<=comb1_d;
" Q7 V. C- u3 p* t7 V% Delsif comb1>money_in then0 S5 [' b) \6 ?7 d
comb1_a:="0000";
. T3 f: X! m& S+ \$ y5 _2 _ comb1_b:="0000";
' ?0 ]5 _0 c5 H+ L1 |comb1_c:="0000";- S8 h, ^/ m" c# v+ S1 W! V
comb1_d:="0000";/ E7 d2 x! u8 g9 \& h' a
comb1:=0;& v$ k2 K& b2 [/ w
end if;8 D0 P& @1 }6 |+ ?
end if;# ~' O' B1 y" Q; v/ `, s( Y
end process;" i* o2 x- U8 X2 z3 k' N' {$ R
process(clk20mhz,distance_in)
) B `" X& o0 e! y) O7 r variable comb2:integer range 0 to 8000;
: d: W8 |+ c: J, u$ G3 n0 Cvariable comb2_a,comb2_b,comb2_c,comb2_d:std_logic_vector(3 downto 0);
1 Q; D' \4 ^4 k s- jbegin
/ x" ~( e, k) f6 u6 ?if clk20mhz'event and clk20mhz='1'then# N5 ]& E/ @# B) Z. Y7 a
if comb2<distance_in then1 d( c9 D& P; A" R$ ~8 S
if comb2_a=9 and comb2_b=9 and comb2_c=9 then' b# T8 x, L: O$ j% N1 r' g
comb2_a:="0000"; r0 @. d! e- D- O9 H2 w
comb2_b:="0000";. a3 W: |) B) a W* \# G
comb2_c:="0000";
+ y; i0 U0 ]" j6 a comb2_d:=comb2_d+1;
~$ Y' a! Q: [ comb2:=comb2+1;
2 |+ l$ N; c2 n, Q2 y; Z. Qelsif comb2_a=9 and comb2_b=9 then- o6 e& E! ~2 \+ H
comb2_a:="0000";" a( Y0 C1 l" q: `
comb2_b:="0000";
& S- w, u4 X) @ z. S$ t comb2_c:=comb2_c+1;
* M* l. i' P; E$ j# a comb2:=comb2+1;
8 ]4 D( X. x T$ ~$ u" Z5 Nelsif comb2_a=9 then
5 ^9 [& s: B. I& q0 b. l8 v comb2_a:="0000";6 k3 _& v/ N- Q* o" {4 k
comb2_b:=comb2_b+1;" v! X3 J. r' I3 H% d; {' w
comb2:=comb2+1;
( z+ i2 T& b; c) X" U6 pelse
& E0 l3 B p5 q8 |! y2 i3 S7 d comb2_a:=comb2_a+1;' e* g9 U P9 m* o" w- V1 F
comb2:=comb2+1;5 r7 a8 g7 y7 |' H
end if;6 Z. c+ w! |% |0 b& A" S" g1 V8 y
elsif comb2=distance_in then6 X5 z- B; D4 W) _
d_one<=comb2_a;
& _2 A4 \# J2 p m; w/ \4 q0 c; } d_ten<=comb2_b;
4 [+ q( H& W* C& o% H d_hun<=comb2_c;
3 E5 V/ z, J) R$ w( T d_tho<=comb2_d;6 y) C+ N0 R5 G7 u, f
elsif comb2>distance_in then
& _' ?( l/ x* s3 g& F comb2_a:="0000";8 ] e; u# f+ F* o. l) L
comb2_b:="0000";
$ j: H5 X! S1 ~, a# w comb2_c:="0000";# [% a' ?" M4 o- O; C
comb2_d:="0000";
# C( J" U6 a; n" H2 @0 o$ J comb2:=0;( h5 F) i; G( i% O; Y
end if;
' [" x/ H$ J" U+ C: l% Z+ Wend if;
) u% J! U- \, e. l5 Uend process;: U8 p$ t8 V' Q% E% O$ ?
process(clk1khz,m_one,m_ten,m_hun,m_tho,d_one,d_ten,d_hun,d_tho)7 Z+ K" a h6 h! z
variable cnt:std_logic_vector(2downto 0);
! z% l- e9 R( h( S! [' Vbegin
% G: g. J2 B& G5 P+ I/ ~if clk1khz'event and clk1khz='1'then% Q! f( M* q, k( q2 v0 {2 F% A* ^9 t
cnt:=cnt+1;! ^0 a6 x- {& f1 a) E$ f
end if;
' @& t5 p) g8 A+ l- Scase cnt is
' ~- K4 K1 I. p: E. D when"000"=>data<=m_one;dp<='0';scan<="00000001";
7 R/ x' I- x! B1 L9 v+ j when"001"=>data<=m_ten;dp<='0';scan<="00000010";
! h7 D K$ t/ @# y: g- B when"010"=>data<=m_hun;dp<='1';scan<="00000100";
0 M- g9 p' Y1 J; c/ f when"011"=>data<=m_tho;dp<='0';scan<="00001000";
+ k; a" r, ?0 \* J! `! z+ A1 m when"100"=>data<=m_one;dp<='0';scan<="00010000";4 S$ P9 r$ Q* M/ L
when"101"=>data<=m_ten;dp<='0';scan<="00100000";$ U* @ n$ h+ K0 f; w+ @+ p& E% N% l% L
when"110"=>data<=m_hun;dp<='1';scan<="01000000";3 r9 Z7 j2 [( s! C8 J) H- J
when"111"=>data<=m_tho;dp<='0';scan<="10000000"; `6 I& Z5 x8 G J1 r) E) K( F/ S9 D8 V
end case;% [/ V8 @% b h3 `! d# N2 J {0 |: W
end process;
0 I9 c* B) r7 \, Fprocess(data)
) v: K6 w B2 Obegin
3 E% Y3 @* C& Scase data is
. q, N: L% F6 u e9 Y/ [! K when"0000"=>seg7<="1111110";! P) m) \- u7 i) }7 [' Y
when"0001"=>seg7<="0110000";" E6 s- a! r! o i
when"0010"=>seg7<="1101101";) K# E. |5 L# Z, x
when"0011"=>seg7<="1111001";1 M" C- u( P5 M, l/ k
when"0100"=>seg7<="0110011";" T2 ]3 m$ `) C: G o0 `
when"0101"=>seg7<="1011011";
0 D: k% Q2 T4 v& `, ?2 j3 P, F) P& q when"0110"=>seg7<="1011111";( a2 h" L" H0 n* K
when"0111"=>seg7<="1110000";0 [# _- O. w/ A r) N# k
when"1000"=>seg7<="1111111";
" d( o8 x" ?2 | when"1001"=>seg7<="1111011";
$ C# E3 l5 x6 v) H0 d9 ~ when others=>seg7<="0000000";
) ]" |9 y5 V: h0 K3 R' Send case;
( x! Z6 Q ?/ n8 g8 Yend process;6 J( w% a0 _- b! {, \5 g1 g
end;
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第二个程序是这样的 |
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