|
不好意思
3 G; I. z5 H# @' W. T4 }+ b5 c0 ]# [' ]7 R, G$ g9 u
想請問這晶片中的程式碼內容
% s! n: k0 m. i6 ^- w F) I2 W2 G" U+ P) ~5 w/ e* F; j
說明他有什麼功用
2 B+ X% X1 u" R1 i w8 h
: J6 P" e$ {+ v, g: E( p謝謝1 R* q: V: ^% ]* H
Z e+ H9 _! u, ]3 S0 I! p
& {* w2 x& u+ w# smodule keytr (
+ ~; Y* |+ s3 B" y; ~key,
" t8 T( d+ y f( u' b; ]ON,* k: s; O" r, N. F" i+ o
clock,1 a( P$ S1 l: x
KEYON,; K, z v/ E" K
counter
: a" C3 z3 y8 Y' Y7 e8 r& n p9 Y# }) s! V
);$ A% M8 |% l3 [" y& e) ]3 j n
inputkey; d, n8 J+ l& _5 L5 a' k3 _8 v
outputON;
* g4 b6 B; l. t xoutput KEYON;% J8 d6 E& ^: ^3 f
inputclock;
& l$ A! n' M$ W* V% L% moutput [9:0]counter;
: R6 s4 b: i; K5 k# I
$ l* ~5 w8 g- I5 O( v
/ C! `0 o" p6 A5 _1 [4 [2 creg [9:0]counter;
3 f- k4 k8 d* O8 Q/ Y' K0 _ R8 V- H0 A- S
reg KEYON;
: f) O, |; L2 ^8 h! U- y- Cwire ON=((counter[`OUT_BIT]==1) && (key==0))?0:1;
6 J2 F% Y3 S4 b2 b) s7 \4 B+ h- ~9 p% ]& X( s
always @(negedge ON or posedge clock) begin
9 X3 }2 o- q( _3 M1 ~6 Oif (!ON)+ ^# _; y* J6 q, D+ R3 h7 |" q
counter=0;
/ ?+ G4 U2 S, o" U+ x9 y% V; l- Belseif (counter[`OUT_BIT]==0)
' {" x# w4 n p9 _( Ycounter=counter+1;
2 \1 t& O. Q$ J% jend
& q1 I, f( z" U8 U' l
, j4 I% c6 u) F1 I/ U& z* Falways @(posedge clock) begin
8 C$ {! u1 G6 R) e* bif ((counter>=1) && (counter <5))0 |# l" q$ _; R9 P, k2 J
KEYON=0;
t$ U8 ~( F! y' oelse
8 V6 W1 V0 a( Q$ P! \) d; \1 c% ?, xKEYON=1;
# z* {. `% e- Nend
; M% n' n* a( g' n! \7 Y
. P& N, l# t' c1 [: _$ R
9 S9 }4 u* p( V M! Yendmodule |
|