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地板
發(fā)表于 2022-7-18 15:08:19
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library ieee;
0 c% ~% a3 Q. I9 \0 X3 n$ ]use ieee.std_logic_1164.all;
' |/ H9 O/ ?: z0 s0 q% Yuse ieee.std_logic_unsigned.all;; p% D* ~, g1 }: G& H9 j' _
entity decoder is& I$ Z$ ]* A; G7 p+ C. s9 @" K
port(clk20mhz:in std_logic; Q8 f# ?: X/ q+ N- ] w; ~. B% U
money_in:in integer range 0to 8000;
4 Q. \9 t" b& ?( Udistance_in:in integer range 0 to 8000;
! P* b" F% @+ X1 K& ~scan:out std_logic_vector(7 downto 0);
8 z1 L! r7 C9 c! r( b8 T1 Gseg7:out std_logic_vector(6 downto 0);' Y7 O1 B) f* _3 p) h# |
dp:out std_logic);
9 k5 r7 J$ j# _8 G$ U/ B$ s9 Nend;+ A- p8 L3 C. y
architecture one of decoder is: I5 ^7 q& N5 |+ y
signal clk1khz:std_logic;
- l0 ` t9 K* x5 J- s' asignal data:std_logic_vector(3 downto 0);
0 p8 |+ w7 K0 F- I. i; X" l2 Zsignal m_one,m_ten,m_hun,m_tho:std_logic_vector(3 downto 0 );
9 s7 q7 o/ k( Isignal d_one,d_ten,d_hun,d_tho:std_logic_vector(3 downto 0);
. y' k. i2 a Y: ]' \* n; ]begin' E- k! Z0 C, v0 E, ~7 g
process(clk20mhz)" `" {- |7 c: X' w; h0 v7 M
variable count:integer range 0 to 9999;+ X2 z: g4 l+ X+ H) s" c
begin& H$ E: U- k: j- F) @
if clk20mhz'event and clk20mhz='1'then% [ H" a# u9 w4 }1 T i
if count=9999 then clk1khz<=not clk1khz;count:=0;
7 N& Z- U+ X, [$ B/ |. I z7 Z) L: d) Xelse count:=count+1;
% j: }) x0 r5 y0 [6 xend if;3 g- T2 R A( B/ c( x4 f
end if;, C0 }: f6 d, R% K0 w! @, ^4 f
end process;! d- e( I; Y$ `, P5 ~
process(clk20mhz,money_in)
" S! C: r3 X2 h) M variable comb1:integer range 0 to 8000;" D" T7 I% V& Y0 m
variable comb1_a,comb1_b,comb1_c,comb1_d:std_logic_vector(3 downto 0);: G$ _: H* Z- V' u4 G, o2 _
begin
# i2 y4 S4 e; Y/ H% u& iif clk20mhz'event and clk20mhz='1'then* j( |- h8 y1 |4 H. m% z |3 r3 n
if comb1<money_in then- @0 f7 b9 W. Z
if comb1_a=9 and comb1_b=9 and comb1_c=9 then
7 `" W7 R% X( k; } comb1_a:="0000";: {) d/ x: o6 z9 x4 V" y ^
comb1_b:="0000"; x; F5 [' S% S
comb1_c:="0000";, o7 c( e0 c/ y5 Q! R5 ~
comb1_d:=comb1_d+1;' l: x8 I5 \& y, ]( w% u5 L
comb1:=comb1+1;
& W( ^, d, T7 o0 W' L( e; [- @elsif comb1_a=9 and comb1_b=9 then' P! Z- Z* j- ]3 m [7 d
comb1_a:="0000";5 I$ ?" t: [: i( |' r3 Z {6 Q
comb1_b:="0000";
* I/ F* H: l4 L8 b+ I5 N- jcomb1_c:=comb1_c+1;- _4 g @% P- l; A( L/ M1 p" X
comb1:=comb1+1;* A' d. l( o$ X/ c7 Q
elsif comb1_a=9 then6 e5 `+ d1 [0 ~1 w1 C
comb1_a:="0000";
/ W7 W2 H# o) f& a& zcomb1_b:=comb1_b+1;$ s9 l3 a+ A! ]
comb1:=comb1+1;
, M& C6 c4 ~$ ~( H* `. R2 `& c8 P else
4 c% }* g6 |1 N$ A8 h* B* L comb1_a:=comb1_a+1;( ?( N& {# r ]- R* F J8 H
comb1:=comb1+1;/ X. Z, l R* S. }7 Q
end if;
: Y1 \% {7 { o3 ?/ D$ A elsif comb1=money_in then
& K4 w5 Z0 c o# W, O- H m_one<=comb1_a; e. H1 P* y, J* `
m_ten<=comb1_b;3 v# r/ H) b1 D8 |4 |$ ^
m_hun<=comb1_c;
" P4 q$ v1 z Y4 n1 Q" S, y& Rm_tho<=comb1_d;- d8 o* o2 G$ H5 O7 s
elsif comb1>money_in then
4 N% X8 z/ ?; }: y* K' l comb1_a:="0000";
0 }' ~ I4 Q# x comb1_b:="0000";
( k3 j7 l, B5 Z1 v( ]3 U. L2 Y6 g* Ycomb1_c:="0000";$ J; z8 ]% v4 g
comb1_d:="0000";
, ?: G$ g5 Y& Ccomb1:=0;
y" m, ^3 K9 d% c* X7 I4 q( Rend if;
7 G$ G4 f1 Q1 D* v/ V4 a) u. h4 nend if;
; i: b: Q- ` w& `" Fend process;
1 X$ S$ s2 p4 G9 Dprocess(clk20mhz,distance_in)$ H" v2 m. D# }5 s. a
variable comb2:integer range 0 to 8000;
7 o8 q. ^: l+ z; b+ Bvariable comb2_a,comb2_b,comb2_c,comb2_d:std_logic_vector(3 downto 0);
# c2 R5 \- a5 o: Z4 t9 g5 s9 K& Rbegin
4 _) x7 w, ]0 D# {/ M- K4 p" sif clk20mhz'event and clk20mhz='1'then
8 R2 J5 v5 N+ D if comb2<distance_in then8 h4 g+ H! q1 d* g* t
if comb2_a=9 and comb2_b=9 and comb2_c=9 then4 y# V4 T) P+ q! T( t4 E2 r& v
comb2_a:="0000";
, _% C& K; N- t! c& ^* F comb2_b:="0000";8 p% l# ?& K3 N; E
comb2_c:="0000";6 Z! t& D/ f/ L6 a- X: w$ X7 ]6 V
comb2_d:=comb2_d+1;* c& b1 g1 X5 g; _
comb2:=comb2+1;
- J# i7 Q9 ?* B$ `2 `; ^7 K8 {9 _elsif comb2_a=9 and comb2_b=9 then
4 A) n, P$ h5 s0 Y! @: d1 t comb2_a:="0000";; j" w9 W6 @* `' d
comb2_b:="0000";1 q) r5 K& g0 q$ j/ e3 A3 {4 s
comb2_c:=comb2_c+1;
5 S1 B/ A' B$ g9 Q4 e/ z comb2:=comb2+1;
1 f3 K) z0 W1 `+ Oelsif comb2_a=9 then6 c1 a2 R- I) C# J1 D% a& `
comb2_a:="0000";) \, c! P, {' B9 }" a
comb2_b:=comb2_b+1;& x$ W( c j3 a! K5 e. u3 \
comb2:=comb2+1;$ [/ e* x2 i! e
else W' q$ ` W) @: U; b4 x, [' B. n7 @& [
comb2_a:=comb2_a+1;; y4 T' p0 z( G: Q! @6 H
comb2:=comb2+1;5 R; q8 @0 ^% L
end if;
9 K- N& D4 [" D( |; x# n, R& M elsif comb2=distance_in then- A7 g4 M, b' F4 l/ b, f
d_one<=comb2_a;" B( V( \, j6 P. |6 K0 `% O
d_ten<=comb2_b;
( x6 s4 b) m! ]6 k) n- J d_hun<=comb2_c;
. o( [) [& I& `5 y( {5 P& I d_tho<=comb2_d;4 b r, v( X; F
elsif comb2>distance_in then. j" F1 G: a3 E5 a6 U, Z4 j
comb2_a:="0000";* p5 a' X+ q) X$ u0 U3 n
comb2_b:="0000";
1 t* J" N$ y! A2 T' ~- Q0 ? comb2_c:="0000";
B3 x% o0 p% i% t) d6 Y5 m comb2_d:="0000";" ]% D- n8 [4 s$ V' Q3 A
comb2:=0;3 L/ i; W7 s8 b a9 o2 p; _
end if;
; G! [9 [" M- l+ i cend if;: x2 {+ V& ^, M6 C8 `& s: w K
end process;- k2 `- \8 @9 F8 u
process(clk1khz,m_one,m_ten,m_hun,m_tho,d_one,d_ten,d_hun,d_tho)
; b. B; o, D- M# r* Qvariable cnt:std_logic_vector(2downto 0);5 \/ S2 H! ]5 A S: E0 x2 k8 n
begin
7 u. \( ?3 A- K9 ^7 u, aif clk1khz'event and clk1khz='1'then
1 A) ?" G$ I" V0 D$ n" P% r cnt:=cnt+1;; m2 h5 Y1 {/ l) o/ k: w/ W3 g# T: ~
end if;
. Q! U* U/ k; icase cnt is
: g" D/ n) z1 q% M5 ]6 [' E when"000"=>data<=m_one;dp<='0';scan<="00000001";9 E" L- i$ N+ o( o4 w* L, Y' u
when"001"=>data<=m_ten;dp<='0';scan<="00000010";
& A0 c! x7 k4 h when"010"=>data<=m_hun;dp<='1';scan<="00000100";
; x* _+ q% |% r9 y+ B* w when"011"=>data<=m_tho;dp<='0';scan<="00001000";
7 k5 y- s3 M4 ^( G' c when"100"=>data<=m_one;dp<='0';scan<="00010000";
7 C }3 |, p7 o- x4 ?1 R4 ~! ] when"101"=>data<=m_ten;dp<='0';scan<="00100000";
, B' T! R6 }" x- v9 v/ G when"110"=>data<=m_hun;dp<='1';scan<="01000000";2 u" |5 o; U a2 n% y6 L
when"111"=>data<=m_tho;dp<='0';scan<="10000000";
; Q8 s2 ~: u) Jend case;
; }9 ]) c9 m0 X: `( |" {* N* iend process;
5 p% `/ ^5 ]6 W# q0 bprocess(data)1 {. a$ Y) o( P4 j8 t
begin
. j3 j0 W4 a5 P6 B Z! r# Ccase data is$ x$ r# u3 V. [/ `# Y! K
when"0000"=>seg7<="1111110";* l' o3 B5 _- E1 Y& ^: B
when"0001"=>seg7<="0110000";
. E$ S2 ?, N) b0 M* \* }* Q when"0010"=>seg7<="1101101";
& }" Q# J* n4 ` T+ h when"0011"=>seg7<="1111001";
* K( |$ \3 _2 ~1 q1 ~8 q when"0100"=>seg7<="0110011";' ?: h; {6 t& e, X
when"0101"=>seg7<="1011011";
% ~0 H6 I s8 M+ R when"0110"=>seg7<="1011111";1 h( w$ g/ L7 x- l
when"0111"=>seg7<="1110000";8 m/ y; m" ^8 i1 ^& C3 u+ Q! `- Q
when"1000"=>seg7<="1111111";
6 C1 B3 n) O' ]5 M% V" m) O when"1001"=>seg7<="1111011"; z' `$ y; E# z& }9 ?, i
when others=>seg7<="0000000";
9 }$ Q( E, h G: m' tend case;2 _( g9 X7 k7 P$ Z
end process;( t" H) w. E+ U! a' q9 C5 U- w+ Z. w
end;
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第二個程序是這樣的 |
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