|
EDA365欢迎您登录!
您需要 登录 才可以下载或查看,没有帐号?注册
x
本帖最后由 Annhu 于 2009-10-26 16:08 编辑 ( l/ N) S# V6 H, ~2 A* c
* o1 z) [0 ?, j# \0 |1 n6 I+ h
:) 下面的程序是一款CCD的驱动程序,clk1=2MHZ,enable主要是控制sh的周期是10us还是10ms icg的周期不变始终为10ms,delay用于控制sh、icg的延时0.5us。编译错误见最下方,小弟把clk和enable的位置换了一下即先判断clk1上升沿然后在判断enable问题就解决了,麻烦高手帮忙看一下这到底是什么原因呢?还有j就是程序的代码有没有可以优化的地方呢,谢谢大家!/ p7 j2 w5 M3 W$ y. k6 x
--CCDshixu + z4 m7 x2 N# a/ ]
LIBRARY IEEE;- ^3 F0 S/ a/ ~( j
USE IEEE.STD_LOGIC_1164.ALL;' M* E& T; |( b$ y
USE IEEE.STD_LOGIC_UNSIGNED.ALL;( I/ C. k3 F+ k6 s; I( r
entity divclk is % ]2 X; \9 j+ W% J; u: h4 Y& ^% h3 e
port(clk: in std_logic;
- v& c/ `0 w6 P start:in std_logic;
/ a7 T8 ]; m9 S. y3 [0 h enable:in std_logic_vector(1 downto 0);; K! @1 E$ ^* X( ~; y/ i
o_m_clk out std_logic;! X: R/ {7 C$ a% a
o_sh,o_icg out std_logic;
3 r; `9 [. ~/ ?/ o7 ~ stop out std_logic);2 \. {. V( W( \. i& `4 z
end divclk;/ H( e4 a- E- u6 V' E3 {
architecture behave1 of divclk is
/ `6 y) v5 Q9 f3 ^1 U' Iconstant halftime :std_logic_vector(3 downto 0):="0101";0 W. ^+ H. l! u% R! U& s6 d/ ~
signal divcounter: std_logic_vector(3 downto 0);--shizhong fenpinjishu
/ |. D- }* B+ Q3 Wsignal shcounter : std_logic_vector(13 downto 0);--tiaozheng sh zhouqi he zhan kong bi# @* n! \0 f# l; n
signal icgcounter :std_logic_vector (14 downto 0);--tiao zheng icg zhouqi he zhan kong bi
! s$ u& t, M$ K5 p" Zsignal delay :std_logic_vector(1 downto 0);--shixian ICG/SH de mai chong jian ge! ?# k; g& v- j9 p& B& m
signal clk1: std_logic;8 M, I9 b2 v& {4 A
begin
+ X6 r3 v' b& z- [; qP1:process(clk,start)--24MHZ,12fenpin1 A8 W& i, a4 m4 X
begin # @ s- ?7 L3 ?7 ~. P
if start='1' then, _5 [$ N' R1 D" x$ J( x
clk1<='0';2 i7 T7 W- l, d
divcounter<="0000";
' o) p! G$ G% H elsif clk'event and clk='1' then
0 m% i+ m! |1 C Q* j if divcounter = halftime then6 y& P7 |1 | I5 y( \ m2 y
clk1 <= not clk1;
8 S" L* N9 O; r0 d+ I" y' J divcounter <= "0000"; ^& C' W8 |. r7 |
else
Z9 E' v) X, b# E divcounter <= divcounter + 1;' Q' N' k% J+ q: `: Y, u
end if;- w X( ]0 M6 A+ Z$ r- t" Z" h- w
end if;6 K% D( v% O0 ]. @! x
o_m_clk <= clk1;
6 `; @& _7 w7 n end process P1;
) c+ U7 X$ N7 d1 S( dP2:process(clk1,start,enable)
' ^" P. e" d% M! @begin! _2 F5 { c; t1 E1 u5 j6 E) F
if start = '1' then, M0 w* S, \, P9 S0 t6 a2 p4 `" P
delay <="00";/ Z7 }7 S2 f6 _+ o$ I$ z
shcounter <= "00000000000000";
2 W7 v ^( M) W# a2 L7 x, m icgcounter <= "000000000000000";
- o0 @$ s u6 |9 j- t o_sh <= '0';2 l/ T5 U" S# K1 A7 \
o_icg <='1';
0 K0 @% Z4 z7 t) h: ^* d/ p stop <= '0';! K2 T- M6 u9 K
elsif enable = "01" then
( _6 ]0 ?6 S7 }3 ^4 u7 w2 x* P1 ^$ U if clk1'event and clk1='1' then
/ C2 j! R# Q6 x8 K% W if icgcounter <"100111000100000" then -- 20000分频产生10ms的周期3 m9 N6 R; v; B8 r/ D
icgcounter <= icgcounter +1;+ k( p" B0 _- n3 t. u& O9 V _
if icgcounter <"000000000010100" then
/ }- r( e* ]- j6 d Z# E2 L4 f o_icg <= '0';
: {, O6 T2 q) x1 B& _2 ~2 R& M else * l- V2 F: X T/ h
o_icg <= '1'; ' e: N3 w/ {3 S
end if;! Y+ E# E7 E0 F( H8 i/ Q
else ' M9 R) T& I& @0 S2 r
icgcounter <= "000000000000000"; & `8 r1 Q- l C5 o m2 G2 [8 Y
stop<='1';
u; z9 j' }- q' j7 u end if;
+ i9 d2 Q& s6 G$ _" w: N if delay = "01" then: c, Q. U+ h4 R+ t7 z4 Y1 D& q/ ~- y
delay <= "00";
/ i9 K! _4 W. f* ^9 a& D if shcounter < "00000000001001" then -- delay用于产生ICG、SH的脉冲间隔0.5us,10us SH J. ~# W3 q% [" x0 R9 L
shcounter <= shcounter +1;. g" V1 h4 C7 D1 h
if shcounter <"00000000000101" then o_sh <= '1';8 v) m6 C t0 K- \8 N* c8 O
else o_sh <= '0'; % L; D) k6 [5 \+ ]; k t) `
end if;
5 T' G1 k$ X! W0 G: r, n' n else
/ S0 F7 P) B( g2 K1 C' f shcounter<= "00000000000000";
5 L4 I. L7 t* s% O3 C* V7 x# t) ~ end if;
5 ~! O5 E$ G) l' w- m3 Q. l else/ n T- `( O7 ~( q$ G
delay <= delay +1;
. J( @0 {3 H6 n9 F end if;
6 P P3 t& Q: S' ]& U6 t end if;0 d7 }, t8 A/ d. B7 G
: G* h6 k0 ~% p, B elsif enable = "10" then a* K, m/ a9 f6 ?& w! J
if clk1'event and clk1='1' then. z! L# E; o$ B4 q0 A ?+ ~/ i i1 ?
if icgcounter <"100111000100000" then -- 10ms ICG6 _0 u" D- K I: j
icgcounter <= icgcounter +1;
, d! f; Q! F( `6 [ if icgcounter <"000000000010100" then % w9 `* E+ ^" W! T q: R* Y
o_icg <= '0'; * M/ y. F& P; x8 E
else
3 d9 |1 w: w l# f o_icg <= '1';
* O1 |3 O+ m; R# k3 b8 c/ _$ F8 C end if;
" R' J% o! m+ P, Q5 J6 g) v else 5 L3 U9 Y. {4 _; J) @
icgcounter <= "000000000000000"; 1 R4 v# t, h' F
stop<='1';
4 n* K) Q6 Z9 [) \. w) T end if;( V6 N6 Z1 X. o
if delay = "01" then
! F- Q( m% {; E8 v5 X delay <= "00";
4 a7 }6 s0 ] t( l! Z- R- _2 e if shcounter < "10011100010000" then -- 2次10000分频delay用于产生ICG、SH的脉冲间隔0.5us,10ms SH. k5 z h& @5 a! R; f5 o' ]
shcounter <= shcounter +1; ^, e: p; |8 {! m, a9 q9 Y
if shcounter <"00000000000101" then* ? ~0 y; |, ?) f
o_sh <= '1';
7 J* X1 V% L. w, q! Z d9 T, f$ ? else
5 f T) F7 ~* Z+ D6 M; @ o_sh <= '0'; ' k6 j4 T) [( @8 z1 a. t3 E
end if; : T- \2 U% E! ?& Z+ w
else8 k/ }- \+ T4 U I( O
shcounter<= "00000000000000";1 r) k! L9 A, h( m; X+ p% g9 I$ a
end if;
! }$ v4 Q }" j1 e else+ t5 f2 [+ [& y l8 j& {
delay <= delay +1;. ?: e4 @1 E' [ a
end if;
: C4 G7 p" Z- J; ~0 n2 R end if;9 i- O( u/ q, z
end if; + t1 W; J W- U$ J0 j+ s$ ]$ g6 X
end process P2; _1 ?3 b0 A6 |/ v8 u
end behave1;0 N1 i9 o" u A+ ]
Error (10821): HDL error at divclk.vhd(42): can't infer register for "stop" because its behavior does not match any supported register model1 g7 b: \5 i# ^# _& i" v( W
Error (10821): HDL error at divclk.vhd(42): can't infer register for "o_icg" because its behavior does not match any supported register model
4 G3 }, c" G' ^ p( KError (10821): HDL error at divclk.vhd(42): can't infer register for "o_sh" because its behavior does not match any supported register model! u$ o) c" Q% Z6 N+ ~. i$ F: ?) {
Error (10821): HDL error at divclk.vhd(42): can't infer register for "icgcounter[0]" because its behavior does not match any supported register / B+ ~/ s4 R0 {5 \& Z
model m) d1 n5 U0 @
Error (10821): HDL error at divclk.vhd(42): can't infer register for "icgcounter[1]" because its behavior does not match any supported register
9 I" H: ^# L8 f$ J% L" Pmodel' v' S$ \- C" k: w+ f& t/ y
Error (10821): HDL error at divclk.vhd(42): can't infer register for "icgcounter[2]" because its behavior does not match any supported register
, y! a* p/ x% s+ |8 t# `" mmodel' i8 h9 J: a( G' x
Error (10821): HDL error at divclk.vhd(42): can't infer register for "icgcounter[3]" because its behavior does not match any supported register , {8 e- X5 D) v8 Y
model
3 {0 r; ]5 _* g8 _5 y* `, bError (10821): HDL error at divclk.vhd(42): can't infer register for "icgcounter[4]" because its behavior does not match any supported register
$ W7 @# m* S, g! Qmodel
, E9 S' b' p& ~+ ^Error (10821): HDL error at divclk.vhd(42): can't infer register for "icgcounter[5]" because its behavior does not match any supported register
& J/ S) k4 L5 H6 ^0 V5 Mmodel% t7 W; D" g+ d5 T9 u2 g3 r
Error (10821): HDL error at divclk.vhd(42): can't infer register for "icgcounter[6]" because its behavior does not match any supported register
; ~; D \5 [ x# xmodel
1 i' _; H+ L/ NError (10821): HDL error at divclk.vhd(42): can't infer register for "icgcounter[7]" because its behavior does not match any supported register + G8 Y1 O( p. X: R0 D% G
model
6 B" p' a) @6 S6 s* _( [4 m% h1 tError (10821): HDL error at divclk.vhd(42): can't infer register for "icgcounter[8]" because its behavior does not match any supported register 4 l# Q- p; I/ c) G
model
( o5 y/ Z- S6 B- W1 m; v. j3 G6 G3 IError (10821): HDL error at divclk.vhd(42): can't infer register for "icgcounter[9]" because its behavior does not match any supported register " [- C% U' X E, M9 z
model L' R( Z) _" m t' e
Error (10821): HDL error at divclk.vhd(42): can't infer register for "icgcounter[10]" because its behavior does not match any supported register 8 f2 W: f' z6 S: A8 v
model
i/ b4 `9 E3 G$ _2 @2 kError (10821): HDL error at divclk.vhd(42): can't infer register for "icgcounter[11]" because its behavior does not match any supported register 1 G& v3 a) }* ]9 r ] }$ N
model
6 P& H% D/ p" f" _$ y8 XError (10821): HDL error at divclk.vhd(42): can't infer register for "icgcounter[12]" because its behavior does not match any supported register * U+ w, }' P. p$ r1 q+ q$ L7 I
model
: |9 F& ^- n. T) [( v; jError (10821): HDL error at divclk.vhd(42): can't infer register for "icgcounter[13]" because its behavior does not match any supported register
9 y6 |( U0 k7 K9 Dmodel
' W% M. o# F" i% TError (10821): HDL error at divclk.vhd(42): can't infer register for "icgcounter[14]" because its behavior does not match any supported register * Q! u S7 E0 ]1 n: u! b2 e! `
model1 I; @: J3 L3 b* T
Error (10821): HDL error at divclk.vhd(42): can't infer register for "shcounter[0]" because its behavior does not match any supported register
- _# _- K( X% R- P4 i6 Bmodel
7 V( X* Z; t, ~1 hError: Can't elaborate top-level user hierarchy |
|