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發(fā)表于 2022-7-18 15:08:19
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library ieee;
3 O. i4 Z/ K/ V1 R# F% p" guse ieee.std_logic_1164.all;8 z5 \9 q; v" w# `' j
use ieee.std_logic_unsigned.all;0 d( ?8 K% w, r
entity decoder is P7 [7 t5 H0 z- Q
port(clk20mhz:in std_logic;2 M; G: L1 S$ M) R! I
money_in:in integer range 0to 8000;/ x# E: r8 {% m6 g. W& o
distance_in:in integer range 0 to 8000;
* S9 j* O5 q4 Y& J9 D1 ~; Cscan:out std_logic_vector(7 downto 0);( u& I3 \! R. Q
seg7:out std_logic_vector(6 downto 0);4 v# j6 O0 ^' N* ?
dp:out std_logic);
- B8 i& p1 {- Q; n8 F: Rend;
6 g& t: W1 v6 N* Zarchitecture one of decoder is
. p" T5 r. b5 u# Z1 U3 n4 i' h- N signal clk1khz:std_logic;
8 L% J/ j' n5 s! _signal data:std_logic_vector(3 downto 0);
% l' @) t- g1 t& H/ A" e* Y$ lsignal m_one,m_ten,m_hun,m_tho:std_logic_vector(3 downto 0 );
: M' D6 Q$ X. Hsignal d_one,d_ten,d_hun,d_tho:std_logic_vector(3 downto 0);8 V. f) ^6 H5 Q2 s6 h5 X
begin- ~) y- @; W$ u. g, L
process(clk20mhz)6 `6 |" d! V6 T# n, \. x8 f2 b
variable count:integer range 0 to 9999;
( O' D6 c8 w- Q4 G4 C# j- Abegin
4 |' F; o8 g2 ]7 N, X2 n+ kif clk20mhz'event and clk20mhz='1'then
% h: ^6 ~: U/ D; D% |- P- g if count=9999 then clk1khz<=not clk1khz;count:=0;
# Q* t! c; U# Delse count:=count+1;
- N. T8 u, w" e: `5 eend if;. M3 z2 J$ a+ e3 h
end if;0 z/ ^6 `* o( M; v& J( `
end process;+ P2 A- o/ T0 k7 r" o6 b+ ~; q
process(clk20mhz,money_in)
7 d3 E0 \/ k1 P9 i3 V `% J W variable comb1:integer range 0 to 8000;3 P: z& S, _% {' s1 e7 y( J
variable comb1_a,comb1_b,comb1_c,comb1_d:std_logic_vector(3 downto 0);9 o6 {5 |* I9 k' L' [6 ^/ O
begin
6 S. x7 V8 R! m- r* f1 d7 ]' V+ ^if clk20mhz'event and clk20mhz='1'then% k6 O" ]& r# H+ R
if comb1<money_in then
# ` Q- f, N6 f. q7 F7 B; o z if comb1_a=9 and comb1_b=9 and comb1_c=9 then
* ?0 G& p4 G# z1 p comb1_a:="0000";3 d7 L0 x. E, @& m9 h
comb1_b:="0000";
( k; N! _+ f+ K+ h" x7 A: dcomb1_c:="0000";
) k' Q, M* L2 o% L7 Ucomb1_d:=comb1_d+1;
) D4 K7 b7 i% Y1 Qcomb1:=comb1+1;
) D) N$ b' q9 S8 p1 c4 \! X* gelsif comb1_a=9 and comb1_b=9 then
1 L; f3 g _. Ccomb1_a:="0000";# c2 N; k* K/ c4 P- N. _
comb1_b:="0000";
4 y' _2 T9 a- c" v6 h' u3 F5 w. N; {3 Rcomb1_c:=comb1_c+1;
1 e$ } S3 K. G9 h, R. x) M; Ncomb1:=comb1+1;
* R$ G0 Z @$ S+ c7 P- U! a& ?elsif comb1_a=9 then
1 }9 x- C7 |$ D8 _" q. N( ` comb1_a:="0000";
( d/ ]. p7 ]9 W4 O& [' ?comb1_b:=comb1_b+1;8 r$ v- D% w3 _( m: c
comb1:=comb1+1;4 r7 u" g. W& K! e* m3 J5 ~ u7 u% @
else
+ n$ H$ i( R+ Q' \5 \ comb1_a:=comb1_a+1;+ Q* Z& }# q: k
comb1:=comb1+1;
. R) g& F. v/ T* U end if;
: n P {5 C% E elsif comb1=money_in then' [+ j% n% t5 L; W1 E+ k3 ~
m_one<=comb1_a;
( [" T" S6 B! o% k0 `& d) km_ten<=comb1_b;1 h, J3 V3 B9 ]& R5 L3 S2 Y
m_hun<=comb1_c;. H+ O7 i% r, I% ?: P
m_tho<=comb1_d;& A1 i; D: `* r0 C8 W8 a: J6 H. [
elsif comb1>money_in then
9 A5 Q8 k0 F! F1 m, w comb1_a:="0000";
% _; U' l2 Z' c4 ] comb1_b:="0000";3 O/ c7 m, m% b8 r
comb1_c:="0000";
8 i$ |' K. P" S comb1_d:="0000";& {* \: [9 T* J1 X
comb1:=0;
! ?& k% g2 W. F$ m, K! {end if;
2 O. J4 K T- s4 o" tend if;- S, e0 `) g5 ` y
end process;
4 M. _: i( \$ nprocess(clk20mhz,distance_in)) R; r$ ^" z# i0 O
variable comb2:integer range 0 to 8000;
( U3 L* b( {/ s3 w3 Kvariable comb2_a,comb2_b,comb2_c,comb2_d:std_logic_vector(3 downto 0);% C& h$ c" Y+ W6 b( C
begin9 v. ?, \. e3 d. X
if clk20mhz'event and clk20mhz='1'then
' G' T4 K3 T& J* _, I1 m9 d" ] if comb2<distance_in then
6 v1 N7 A4 D7 Z if comb2_a=9 and comb2_b=9 and comb2_c=9 then
; C" _2 B @6 T- I( ` comb2_a:="0000";1 r0 v, c6 A$ ~
comb2_b:="0000";
! k2 Y6 R& Z( e; m7 j+ I comb2_c:="0000";. }9 s3 M8 B# C1 h9 H
comb2_d:=comb2_d+1;
6 P3 p6 s9 f4 [ comb2:=comb2+1;
, H4 `) b; A1 j+ gelsif comb2_a=9 and comb2_b=9 then
/ b3 K' L8 P3 C* \ comb2_a:="0000";9 t3 O9 p. q' v: j R, E
comb2_b:="0000";
! q! [4 ^; V7 t4 e comb2_c:=comb2_c+1;6 P$ D8 L2 p4 Z7 M1 m* j( |
comb2:=comb2+1;
r$ i* h6 O* D" ^ @elsif comb2_a=9 then
7 o* b& I( E M comb2_a:="0000";3 i7 |/ z# o, v/ P
comb2_b:=comb2_b+1;
7 D6 E3 j& j3 B8 I0 ~% }5 v$ ^9 i2 F comb2:=comb2+1;
+ r* R1 T0 s- j) X& ?$ t. \else
% P0 m q9 Q, ? comb2_a:=comb2_a+1;
8 a; N8 i# t) v; L0 I comb2:=comb2+1;$ ?' @1 f8 K. Y5 S# m) ?
end if;
/ e$ p7 g- {: O, H- G1 v2 r elsif comb2=distance_in then
4 B' D* L, S l) m# ? d_one<=comb2_a;8 ^! r, N# r, ?5 c1 M' H
d_ten<=comb2_b;
2 F& E/ f; q, h* ^3 m1 U2 h, a" F2 W d_hun<=comb2_c; i/ F9 p' ]5 p; a+ k- O! Q5 o) J
d_tho<=comb2_d;
, e& g, x) `& J0 z+ z0 ~elsif comb2>distance_in then
8 R, w' n4 i b: k+ P: Q2 L6 |1 C comb2_a:="0000";
% s; ~) d2 A' s7 t* t/ R& L* M comb2_b:="0000";
& O% B: v. v7 ? comb2_c:="0000";- y7 o* d" u# J$ W& M' P2 H
comb2_d:="0000";
/ P! I* e; O: P9 j* T/ A/ Y comb2:=0;
2 j6 R2 s X. q0 ^ end if;
( g O% K- ?/ U6 vend if;5 q/ ]7 F; [( Q2 C$ U5 a
end process;6 A; x( l! j) u/ B" g
process(clk1khz,m_one,m_ten,m_hun,m_tho,d_one,d_ten,d_hun,d_tho)1 f% @* m" y5 \( S* i* Z
variable cnt:std_logic_vector(2downto 0);
% }' y3 C$ L* t- S9 I. t/ nbegin+ {7 {! j% x2 b" n( i5 l
if clk1khz'event and clk1khz='1'then5 x( J# p+ p. l4 D+ h+ q+ d+ l
cnt:=cnt+1;- I& A! D8 H" `5 Z
end if;( ~* W. l2 q- D2 Y/ g0 ?, r* g7 t! M" |
case cnt is: R- H1 _# ~" ]$ Q0 |8 F4 Q0 e1 }
when"000"=>data<=m_one;dp<='0';scan<="00000001";
1 z6 l2 \ z7 ^3 V" u8 { when"001"=>data<=m_ten;dp<='0';scan<="00000010";3 e& g2 K# Y o& \8 i2 A
when"010"=>data<=m_hun;dp<='1';scan<="00000100";
: j; E3 a( i( Z1 z2 v4 A when"011"=>data<=m_tho;dp<='0';scan<="00001000";; c3 `0 B6 T$ i( v# G
when"100"=>data<=m_one;dp<='0';scan<="00010000";- b, b% @8 I2 B; \* e
when"101"=>data<=m_ten;dp<='0';scan<="00100000";
: E2 I, u6 \2 B9 x when"110"=>data<=m_hun;dp<='1';scan<="01000000";3 D3 F. R' I( } b8 Q" `
when"111"=>data<=m_tho;dp<='0';scan<="10000000";8 U9 F" c/ m: O# f
end case;
& M# E! b* {, p4 F6 o8 l2 lend process;
( v% v9 I( c6 E- m4 tprocess(data)' q- n7 A1 K( Q0 ^2 T8 o! ^3 T& z' h
begin
: `3 A5 b" C' ?* |/ Zcase data is+ D1 f; h S! l2 q x/ ]
when"0000"=>seg7<="1111110";
* V# U/ y/ g5 ]- \4 J2 g6 j when"0001"=>seg7<="0110000";
9 f8 b0 O& t5 Z5 I9 C; i- Z when"0010"=>seg7<="1101101";, w. }! S M8 P) O
when"0011"=>seg7<="1111001";
* F7 f( {! \3 a6 S& t when"0100"=>seg7<="0110011";
8 m9 S. E8 Q. M when"0101"=>seg7<="1011011";" h/ U/ e6 j+ E. b `
when"0110"=>seg7<="1011111";4 v/ S `4 |: m* ?. D
when"0111"=>seg7<="1110000";
& }! e+ B' G: W6 J6 B when"1000"=>seg7<="1111111";
# q: [/ z3 k1 u7 ]! j when"1001"=>seg7<="1111011";
* O& [( b( M- h6 ~4 N when others=>seg7<="0000000";; s7 b) z* N. c% Z& l. R6 D0 ?0 g
end case;
0 O$ T* K0 K2 c" `# _5 x1 J3 ^end process;$ |9 H7 L& f, T' y( J
end;
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0 N8 W" C" Z! M) S7 W5 U# V3 _+ a+ t$ a2 ~* U9 y3 j
第二個程序是這樣的 |
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