本帖最后由 XinLiYF 于 2018-2-1 23:03 编辑
1 E7 }7 h8 ], E; N8 R% D) G9 Z! ~- F
模仿kfifo实现的环形缓冲区
$ z6 _% x, i( v. \: e' b: W $ D% R9 W1 g3 }
1 w @% s0 m7 c3 Z
转载来源:模仿kfifo实现的环形缓冲区
E9 e% C+ p7 `: O% ?* ?7 V, J( D7 H% K: h1 P2 U( [8 }8 X/ Q
! c$ V7 e1 G+ |) ?$ gGitHub仓库:http://github.com/XinLiGitHub/RingBuffer$ f% X" ]4 k4 S
PS:博文不再更新,后续更新会在GitHub仓库进行。8 z2 T5 T0 S4 S4 m; D9 a
, ]. U1 c# i4 K4 c9 u$ x, ?
模仿kfifo实现的环形缓冲区。程序中涉及到环形缓冲区的概念,详细介绍见维基百科[Circular buffer](http://en.wikipedia.org/wiki/Circular_buffer)。' {( I; E i* X# ?+ A% L1 b4 S
6 w F! ~% \7 G' i3 H
1,开发环境
5 c% C* I L* Q8 G# N$ h" U* D 1,操作系统:Windows 10 专业版" d+ F) U- N( |! {" M
2,IDE:Visual Studio 2015 专业版
0 S, D" ?$ J) g6 X+ q
5 b. u4 Y; A% f$ L5 @# R5 i6 A2,程序源码
- F O& O' Z8 E) J6 a RingBuffer.h文件
$ @0 n/ k3 b5 o4 T' [; f- /**
6 F! Z& e) D9 e - ******************************************************************************. y% M5 M* y& U$ Q# N. J y
- * @file RingBuffer.h
; ] U! p- U: V! u, Q! T - * @author XinLi0 y5 h8 N ^/ w% T, ?) v1 d
- * @version v1.0
( s+ |7 k i9 s/ K& h. J) l - * @date 15-January-2018! i- r- n( d. J0 s" C' O, y. `, U
- * @brief Header file for RingBuffer.c module.2 b) m% U* b4 L, P
- ******************************************************************************( u' u3 p" |9 Q5 j8 R
- * @attention
+ l; ~6 C# w; t; O. S - *
) G. K! J5 G' J& i# E - * <h2><center>Copyright © 2018 XinLi</center></h2>
+ p1 b/ R2 W' t j" _ - *
3 d7 p4 O5 g8 i$ ` - * This program is free software: you can redistribute it and/or modify
( Y, ^; D/ j" v5 v/ |( p9 w - * it under the terms of the GNU General Public License as published by0 D! w- a& s0 y
- * the Free Software Foundation, either version 3 of the License, or
) h+ }- g2 B& C3 Y. Y - * (at your option) any later version.6 l$ O/ [: {9 T- m" r
- *
[$ |/ h# o( o0 J" g/ W - * This program is distributed in the hope that it will be useful,: T0 v9 e* [/ f3 \
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
3 u6 c( s' H& _8 t9 { - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ g7 ^- B3 B! G! H& J$ h' ~! q7 N. s - * GNU General Public License for more details.2 I( r/ L" J5 \" r4 F0 P
- *
: L- k- S$ E) y$ n+ T - * You should have received a copy of the GNU General Public License
% w9 ^3 R5 H/ y; f" p2 Z1 c6 J - * along with this program. If not, see <http://www.gnu.org/licenses/>.8 g; g; j4 ?4 t3 m* G0 ]) w
- *6 h* B9 v8 Z1 r) s! j6 H; U
- ******************************************************************************
4 ]1 i( Z+ o' S3 j - */
* @: b, U R) K& Y - ( ] l+ T; k9 n* m5 ^" _
- #ifndef __RINGBUFFER_H+ c) Q5 w- B9 g5 S6 _& H( Q
- #define __RINGBUFFER_H$ i& V6 Y6 v) u, P0 j* {4 j
+ |4 {! M0 \" Q- #ifdef __cplusplus; Z: s6 t& A; ^
- extern "C" {
1 ~+ X! i% \; N" i( B/ z1 U( H - #endif0 N7 a4 x/ G. s2 d' J
- o- O% C7 S2 A+ K ~% V- /* Header includes -----------------------------------------------------------*/
7 r, U4 F; ^, }3 L2 h - #include <stdint.h>8 b$ s! F/ u% j! c: W7 C
- #include <stdbool.h>0 G, ]. q, D) T3 U0 Q \. |% ?7 _# p
- - s( y5 S' K& Y
- /* Macro definitions ---------------------------------------------------------*/
, r& I! A; f9 t' A! P - #define RING_BUFFER_MALLOC(size) malloc(size)2 r9 j+ G* w: \: y+ X% p* Y
- #define RING_BUFFER_FREE(block) free(block)
; S. R1 s( d% c - U8 `4 \2 N5 h2 Q# C, }. K3 ~4 m
- /* Type definitions ----------------------------------------------------------*/- r: ?) W% @1 X- A
- typedef struct* D F5 z1 I' o7 h3 D8 R4 X+ y
- {
$ x# G# N, [- u+ |" S1 d - uint8_t *buffer;
8 G2 e& _; S3 |# Q% D" h: d( _+ e - uint32_t size;7 T1 f. f, C9 ~: P7 N$ [
- uint32_t in;
3 E, J' N% U: u* R% q* w# b - uint32_t out;
3 p, _ c( {. ~7 C9 ^- v* U - }RingBuffer;9 z5 K/ g. \$ Q- q2 P1 M+ U
6 V) y: x8 Y/ b& U& v+ @9 ^3 W- /* Variable declarations -----------------------------------------------------*/9 d4 ~( \# H3 v& }
- /* Variable definitions ------------------------------------------------------*/
3 g/ D* U; x+ O% ]9 } - /* Function declarations -----------------------------------------------------*/
& Q% Y0 G, @* r6 w: A5 R% u - RingBuffer *RingBuffer_Malloc(uint32_t size);/ @( z l0 x4 x1 ~8 Q% P
- void RingBuffer_Free(RingBuffer *fifo);
/ j; j; W' t$ T3 Z - uint32_t RingBuffer_In(RingBuffer *fifo, void *in, uint32_t len);
7 V! h# S x) T$ N% f - uint32_t RingBuffer_Out(RingBuffer *fifo, void *out, uint32_t len);
# U; v$ d; G: D1 Y
: d8 y& v8 _; l. P' H- /* Function definitions ------------------------------------------------------*/
+ k& G# W) ?% E5 j - 7 u; \# z7 j1 q8 P& R/ d( K
- /**
7 K. F3 K8 Z6 v/ g2 u) [. j - * @brief Removes the entire FIFO contents.; s' {2 @# w- \+ p" v9 V( g, e; q
- * @param [in] fifo: The fifo to be emptied.
3 s8 T- u( W$ Q+ z% W9 [ - * @return None. S# I" g0 a7 s. U" @8 v
- */( H Z+ f4 J: A: o$ H
- static inline void RingBuffer_Reset(RingBuffer *fifo)
! w c7 K" B& o" B9 _- b - {
* a6 C7 R9 A& {$ f- r- }( i - fifo->in = fifo->out = 0;0 M$ K" g* Q8 A/ {! Y% O0 t8 K& G
- }
' K" v$ ?) ]! r7 a E# E
" D6 G3 Z; ~# V1 t1 R d- /**
! A0 z: e; t5 Q0 P6 R/ J - * @brief Returns the size of the FIFO in bytes.
- |8 d. K/ K1 i9 y" D# R8 S - * @param [in] fifo: The fifo to be used.( N7 A0 \; I0 N7 e6 c: C
- * @return The size of the FIFO.
0 {( B8 `7 J0 v6 i - */! j9 C9 h5 g% Z
- static inline uint32_t RingBuffer_Size(RingBuffer *fifo)
4 T& Q; m3 L- Y( e Y7 | c+ ] - {! C2 Q/ k! c5 e' N1 [
- return fifo->size;' H5 p! D4 i$ u3 h
- }
( E6 ^5 X3 H/ V' w; X; r# P - ! I+ q1 m( j4 V/ Q
- /**
- P3 p8 l: o1 R. h/ Q - * @brief Returns the number of used bytes in the FIFO.
/ u+ u0 s _7 C2 D1 N7 A0 t - * @param [in] fifo: The fifo to be used. u0 A; f, G; w0 }4 X! u& q
- * @return The number of used bytes.
) x* s$ ?4 s5 n# V1 Q' Y - */
! Y4 x% D( w& t. Q3 B0 t - static inline uint32_t RingBuffer_Len(RingBuffer *fifo)
: A6 f* q. ~/ `" Q1 U& l* ]0 ` - {
$ h5 y5 w0 b$ T4 R, I - return fifo->in - fifo->out;: n. h: O8 E6 g* S* O7 t+ d9 W/ ?; C
- }% _9 o$ u( d m& R- o/ ^& r7 v
- 2 U2 _; S" D! d7 U
- /**
6 [3 J! s/ D5 K, A% W" Y - * @brief Returns the number of bytes available in the FIFO.# J8 r8 L s/ V) o. b
- * @param [in] fifo: The fifo to be used.! j7 G7 x) G* |/ b* u" O
- * @return The number of bytes available.
8 |( G6 q d+ I - */* J3 X3 U- {- `1 U8 B
- static inline uint32_t RingBuffer_Avail(RingBuffer *fifo)4 P0 G" U/ Q( ^* [. v
- {3 s+ @$ N: ?0 C/ c* A
- return RingBuffer_Size(fifo) - RingBuffer_Len(fifo);
5 \8 h' Q% ]7 O' u7 K" w4 l - }
i: _3 B9 v$ \. [. d - * V8 z2 I3 D7 h( w; P
- /**4 d7 F0 n) C! @9 r5 O" e
- * @brief Is the FIFO empty?
" @' ?3 z' o7 p. E+ T4 x4 _& @' R2 t0 ^ - * @param [in] fifo: The fifo to be used.7 V& s( _! p' h9 x4 e8 o
- * @retval true: Yes.
8 C; n6 _# D- @ - * @retval false: No. d: g4 _9 y5 c( M% }- x) p
- */
H8 Z0 y( | V$ k! k4 C2 Y - static inline bool RingBuffer_IsEmpty(RingBuffer *fifo)
3 c) m: G/ C( O @$ b, i - {/ a, m* t) N0 u0 C: w
- return RingBuffer_Len(fifo) == 0;
8 f: p/ W+ j5 J K% f4 r1 {7 @ - }' d, G1 }' L; ~" U' j, t6 D
- / `) E g, P' m7 A- I
- /**5 U4 g0 _7 w+ U3 _) \: a& J
- * @brief Is the FIFO full?
8 k; c5 R& a& ^5 S5 m- @4 X - * @param [in] fifo: The fifo to be used.; e5 D ?, w: o/ |# E, W
- * @retval true: Yes.9 l ?- }5 c; k W, h% M$ g
- * @retval false: No.7 B+ m) H/ ]4 X- w' j! O4 {
- */ T4 ~4 I6 X" ]( b4 B
- static inline bool RingBuffer_IsFull(RingBuffer *fifo)
9 a& G% ?# o& m! E6 ^ - {+ q. V6 F. A* @
- return RingBuffer_Avail(fifo) == 0;7 U; t1 i* d9 h5 q) p- E
- }; B }# f) |8 `7 n
9 p. I/ ^- W W7 Y- #ifdef __cplusplus
* V1 ~5 l5 X. ]3 @# F0 @# l6 [ - }7 P- g% _5 k V1 ~/ ?$ n1 C) I5 b
- #endif/ s- s4 L! g9 B& s i/ I
( o/ P* B" J: }, q9 H* m9 T1 J, S7 J- #endif /* __RINGBUFFER_H */0 w5 N& g+ k5 p, h2 ]0 }
复制代码 2 W3 i0 h2 v, u: B0 h9 x* N
RingBuffer.c文件
- T7 m: I; }& B8 F M) T5 G6 v- /**) t5 I3 M# \" z5 u) ?
- ******************************************************************************6 o4 Y# T; `' B0 |( \, |
- * @file RingBuffer.c- }, d% W0 X* U0 |9 N* j" S
- * @author XinLi( f4 [5 Z# ^& s' h2 Z* e( J5 M
- * @version v1.0
$ F* `6 b+ W% x& y+ i - * @date 15-January-2018
4 E4 q0 a- g! O* S; L+ F: v - * @brief Ring buffer module source file.* Z3 L0 f" {0 y# f$ x: r
- ******************************************************************************- H& A8 s& O8 V c
- * @attention3 h8 r4 Y; R/ V( B7 K' A4 @+ E/ l
- *
+ \6 \! P6 g9 I- M, e5 }6 R - * <h2><center>Copyright © 2018 XinLi</center></h2>! o( C) u+ w+ [1 g: e
- *' |1 p% X- q0 S3 d- B
- * This program is free software: you can redistribute it and/or modify
^. N# K" @0 _9 m3 E& M X - * it under the terms of the GNU General Public License as published by
6 L/ {1 \2 ^# c - * the Free Software Foundation, either version 3 of the License, or( Y. s4 C" _6 _8 K. E3 \' [' D8 q1 c- z) l
- * (at your option) any later version.# m# J6 D$ W1 K2 h7 H
- *
5 I# G6 m: j7 d+ b- Z# t, R - * This program is distributed in the hope that it will be useful,
! G- D8 S9 J2 X! Y: Z; U& s( c - * but WITHOUT ANY WARRANTY; without even the implied warranty of
: l7 v& {. |; @ - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the1 d, h6 n) j+ ?) | C! V
- * GNU General Public License for more details.
6 |* Y: ^' y8 a - *
( Q7 s' k0 `# ^1 Z. ], y$ ` - * You should have received a copy of the GNU General Public License8 Y; `3 y; u; }( K- Q- H9 ?
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
4 ?1 s1 A' ^0 U1 _9 @3 n - *6 H, Z: F) _* |5 P3 a( W6 p F& d
- ******************************************************************************7 J; x' Y- a% C# l* Z' q" l& i
- */
) T5 g1 I6 r8 C, f, \3 q% r
& w5 | E4 e: n- /* Header includes -----------------------------------------------------------*/, D3 T" o+ g/ e: u F
- #include "RingBuffer.h"7 c a8 \" P, M7 h' [/ U7 u
- #include <stdlib.h>
6 Y, m, J/ B& ]: v - #include <string.h>
% N( @" ^' e3 Y' \! \$ n9 o- C* |9 d - 7 O( r* W& w, e5 P
- /* Macro definitions ---------------------------------------------------------*/0 g8 J/ A8 r! h- K) B3 i
- /* Type definitions ----------------------------------------------------------*/. m" \, j0 w# i3 j$ O) t2 T7 G
- /* Variable declarations -----------------------------------------------------*/' p4 _5 O8 C, B* _+ x: c& Y
- /* Variable definitions ------------------------------------------------------*/
0 t O" a2 Z4 O1 E) z - /* Function declarations -----------------------------------------------------*/
$ u3 C4 w9 ]5 K# y - static bool is_power_of_2(uint32_t x);- A& B4 e/ D$ ]& j: |- a/ |* |2 y
- static uint32_t roundup_pow_of_two(uint32_t x);
* z3 ]2 F, v1 ~1 \% g
) h6 M" H2 Z# k% e9 I( ]4 ?! O- /* Function definitions ------------------------------------------------------*/
0 o4 S7 n0 L; o) ~, I9 x - 0 i0 S2 \: j9 H7 I( \ P
- /**7 d9 }2 A) d% S& ]; u0 h
- * @brief Allocates a new FIFO and its internal buffer.* i. d* O: Q; Z9 W0 l6 i
- * @param [in] size: The size of the internal buffer to be allocated.
4 J3 u* j$ h+ U6 v: e- g - * @note The size will be rounded-up to a power of 2.
3 B8 ^: v3 |6 j - * @return RingBuffer pointer.
" u- M% H" b0 l9 P8 D: N4 c - */
: \ e& d# G- d& x6 Y: X8 \. X - RingBuffer *RingBuffer_Malloc(uint32_t size)6 g0 q4 B+ _9 d; f+ ^. G
- {9 `+ c$ b0 |3 o; f/ B# {3 L# ^
- RingBuffer *fifo = RING_BUFFER_MALLOC(sizeof(RingBuffer));, P3 B# E% l2 `8 k h( G
2 r) v* {# N" s& ?4 g( \- if(fifo != NULL)
. C) V/ Q! E7 k, k$ ^7 o - {
! G1 m+ l V _- ]$ W9 k U - if(is_power_of_2(size) != true)
" N6 L9 J: v9 J* M, p) ?2 e - {
W: L: s& Q1 \2 b2 g5 p - if(size > 0x80000000UL)- x7 t+ d. D7 I
- {2 E, W$ b+ D* h0 x; J+ d
- RING_BUFFER_FREE(fifo);9 i; s$ f1 M4 `' c/ f
- fifo = NULL;. i4 d* x+ C F
- return fifo;
8 j5 e: v" u! v' T* E, d - }, o% k/ P" Q& d" g" K2 x; a! g* P
+ a7 ^, b% ~& q v5 z/ `- I. d( k- size = roundup_pow_of_two(size);
/ D: X9 X# u( |( W y# Y - }( I, D5 g' B4 y# U: ~/ R
) c8 ?" `7 C: t: M) i# M; U# R: ]- fifo->size = size;. e% `; {2 {: F" n1 _% p/ }
- fifo->in = 0;- k: X7 n& \/ L5 D% M
- fifo->out = 0;$ n: n( Z7 ~% K H( m
- fifo->buffer = RING_BUFFER_MALLOC(fifo->size);
5 R* a5 |! Q0 _8 S: B# k% E& H) k
6 }$ \. G' |- J0 ?0 v1 N/ p- if(fifo->buffer == NULL)
" ~ L2 N% K( R - {
; c, z4 n" z9 J L/ H! m$ x! h - RING_BUFFER_FREE(fifo);7 t) _, b d' v6 K: B1 W
- fifo = NULL;
+ U: s0 y! U7 |) G* G; s5 I2 T - return fifo;
# D e: F: Q7 M - }7 w! l% k- p4 p
- }
4 ?3 a2 l& n# h/ _2 n
, u) Z; K2 O: v* W1 o# m- return fifo; K( _5 {' j7 V! }: C
- }* c+ C2 O! w: S& `: E
- 5 ~4 l5 ?6 d4 h8 C
- /**
& m: O# l" W$ p% ?1 J' Q - * @brief Frees the FIFO. U+ g# D" X( l9 e5 U
- * @param [in] fifo: The fifo to be freed.
5 b. V0 G3 n8 Q' ^* E: J6 v4 u - * @return None.$ d9 I9 T; v. n
- */' m! v& F v2 Y, m) h1 ]1 \
- void RingBuffer_Free(RingBuffer *fifo)
; n' j. z( }3 r. k - {! o' p) X* L" s/ e4 |
- RING_BUFFER_FREE(fifo->buffer);
1 \% f0 {8 |7 U3 ^ - RING_BUFFER_FREE(fifo);+ W0 }8 v3 I( z5 z" u9 F0 X
- fifo = NULL;" j4 W. v$ }/ u/ U4 u9 @
- }
$ ]9 H, n% L8 @- e. d- f
0 c! K- e. S! `1 }- /**
- @- t& T0 a+ C8 V. Y - * @brief Puts some data into the FIFO.
2 x4 j% v8 C7 a, P7 z - * @param [in] fifo: The fifo to be used.
+ [& k& t6 u4 m; M, ]: {8 r D3 v S0 z - * @param [in] in: The data to be added.6 V0 k9 e# w$ V6 I# `
- * @param [in] len: The length of the data to be added.
: G9 n3 j. c. ?; {& J% p - * @return The number of bytes copied.
; p7 r4 y4 [0 {! r7 ^ - * @note This function copies at most @len bytes from the @in into
$ V# {' D3 o# [4 R' }% t - * the FIFO depending on the free space, and returns the number ]. k. S6 M, \" v7 h Z8 J
- * of bytes copied.
% j H5 _5 V Y* i - */; e" b3 H- N' |% V
- uint32_t RingBuffer_In(RingBuffer *fifo, void *in, uint32_t len)
( N. R4 `5 G( K, b7 Y - {2 H; j. [3 R4 z) r# l. K
- len = min(len, RingBuffer_Avail(fifo));( r" q" f- P5 R8 a( `! z
- 7 G$ u1 X& P! Z8 Z; l8 n6 j' T
- /* First put the data starting from fifo->in to buffer end. */1 t0 ?5 t% I9 Q+ y Q# C+ r5 q n( O7 y
- uint32_t l = min(len, fifo->size - (fifo->in & (fifo->size - 1)));- T+ ~/ _, P5 \2 ?
- memcpy(fifo->buffer + (fifo->in & (fifo->size - 1)), in, l);9 {- ` W# M' @) j5 k& M: R7 Z
- 7 M/ r0 F- S3 ]3 F6 u! V2 o+ S
- /* Then put the rest (if any) at the beginning of the buffer. */
/ w0 y! S [0 R; R8 X - memcpy(fifo->buffer, (uint8_t *)in + l, len - l);' K6 f. l9 g' \5 ]2 _, x
- " R8 h8 z, v' i# d
- fifo->in += len;
: ]6 I% _) r, |9 t2 h" R/ X
& }, ^% V. ~5 B$ I% ^/ _- return len;
/ h0 r j: ^5 u' d7 e - }
# e3 A$ Q* V, n+ R - - ] t; ~ s) N' k( K+ O
- /**
9 ]$ w4 p% H V' m& k, R: p, T t - * @brief Gets some data from the FIFO.
5 I' i+ b- i: ]0 X$ E - * @param [in] fifo: The fifo to be used.
0 Z. f9 b q- B7 A( ? - * @param [in] out: Where the data must be copied.
& O; n5 z% l7 a5 x+ J) b - * @param [in] len: The size of the destination buffer.: l# e8 h! w+ Y. T
- * @return The number of copied bytes.9 ^ s- T! T4 p% L; b/ T; h
- * @note This function copies at most @len bytes from the FIFO into
7 _/ v7 I B4 s; d" H( l( w6 c - * the @out and returns the number of copied bytes.& l4 x7 c" t2 ]
- */
5 ~5 c5 X( X! n" O! p+ h - uint32_t RingBuffer_Out(RingBuffer *fifo, void *out, uint32_t len)( h+ G7 i' q0 ]( t; Y* k
- {
; a: }8 u( g1 N- E' R! G - len = min(len, RingBuffer_Len(fifo));
2 U- V/ k7 N9 W( i2 I - & a, V9 E8 i, x/ n1 G
- /* First get the data from fifo->out until the end of the buffer. */
: [1 h) u f9 D( R; }& m - uint32_t l = min(len, fifo->size - (fifo->out & (fifo->size - 1)));
: v/ m- E. K- p* k9 | - memcpy(out, fifo->buffer + (fifo->out & (fifo->size - 1)), l);+ }. V% C: u5 ]5 b! F4 X5 X+ ^ E
- 1 \* V' ~- K. U8 u6 J
- /* Then get the rest (if any) from the beginning of the buffer. */- S# \& A" k* o9 ?8 N% e
- memcpy((uint8_t *)out + l, fifo->buffer, len - l);8 u% \+ m d% l, j7 E' \6 w8 F
- 9 H' g3 H; n) l! O8 _0 X3 @
- fifo->out += len;
7 n {* o" E1 d; n( v - ; ?4 s& f; p8 s% X* z0 G
- return len;
* v* B' x* B/ k3 d; z- z& Q' C - }
( _: r6 L; N' [0 k5 b E - % \4 J3 E, Q: [# w1 G5 I: ^
- /**
& [; j6 C6 n% F8 j7 n - * @brief Determine whether some value is a power of two.5 E2 S/ C: V: c8 E7 {! a
- * @param [in] x: The number to be confirmed.
+ ]7 Y$ r, b$ S - * @retval true: Yes.- }4 N. | H4 p( E# ^3 G" \
- * @retval false: No.
5 \7 ]4 \+ N; E - * @note Where zero is not considered a power of two.
2 |: p# Y3 L$ m5 O+ d7 R - */& N! {! i6 z1 G5 e# {) X
- static bool is_power_of_2(uint32_t x)
, V0 {) H! }; n3 [ - {: M3 P! u- ~4 w, i
- return (x != 0) && ((x & (x - 1)) == 0);
8 ^' e w- J" v& V8 R - }- k `0 ]0 `0 D
$ g1 R2 S& Q( G+ V5 r* z/ Q ^% f- /**2 R) D9 U+ U7 [; t1 U4 B w
- * @brief Round the given value up to nearest power of two.
+ }, }* y" J2 ]+ x - * @param [in] x: The number to be converted.3 [7 F0 b- }, D6 J) ~. X4 h
- * @return The power of two.
1 b- h* j* s @8 C- O9 |+ q1 D L - */- \ R9 ?2 r. J1 t) X
- static uint32_t roundup_pow_of_two(uint32_t x)+ M4 ?0 E" g' h) D& \- Q
- {. d9 v, K- b2 @" U$ a
- uint32_t b = 0;" t1 W6 @# l i' K$ E( y @
- 1 r" c6 O. F. N3 I: N' F, P
- for(int i = 0; i < 32; i++)
4 \6 J$ n. p" F - {( ^+ ~' V1 F. S) B6 d
- b = 1UL << i;
" {9 i, x0 U- C' T - 2 A' I7 }( }- }, d4 k, R
- if(x <= b)! n5 t4 S" }- ?& K* d
- {; y0 P$ i# E. n' R+ J0 t
- break;
& B- t& z! g5 G. C0 c5 _ - }
5 o) ~6 e0 s1 u - }
/ B: g# C/ {1 l# U
0 w- ^) q; { x6 {- return b;7 r4 R( t. |0 \) o
- }
" z' E0 e) G6 S% d. d
复制代码 # r- W. B! z0 U3 Y" H
main.c文件
# l1 @& S1 M5 y- /**! C! B+ ~2 K2 U+ k: \1 R
- ******************************************************************************
+ y5 h6 @$ X( ]. ]' \ - * @file main.c- R. g. T1 a+ V' P. O
- * @author XinLi: n) g: H; X0 ~ v- W6 j+ T. U0 k6 c
- * @version v1.0
6 w/ F% M+ Z0 k$ J" p6 S - * @date 15-January-2018
1 x) q9 v3 |9 [: V0 w! G' C) f - * @brief Main program body. I6 p s8 j0 a. ~2 \; b7 f
- ******************************************************************************# V7 h6 T; ^" g6 d( K
- * @attention
+ v+ b( a) ^/ O- X - *( {0 _- \: R: `4 ?
- * <h2><center>Copyright © 2018 XinLi</center></h2>0 P2 g, B1 U, h: r: u0 L
- *
* i( J# |( ]/ l5 I7 Q$ r7 a0 } - * This program is free software: you can redistribute it and/or modify5 l7 Y; j- C/ U4 g
- * it under the terms of the GNU General Public License as published by
( d f" }+ p( J- Q( G: P - * the Free Software Foundation, either version 3 of the License, or
# h) b- L; n" W+ F' ^ - * (at your option) any later version.
0 |5 B: ^1 }4 y, r* f: _ - *
3 o: G. d, d0 z$ D5 x D - * This program is distributed in the hope that it will be useful,
" l/ B9 X) E) d4 d8 _- a0 J - * but WITHOUT ANY WARRANTY; without even the implied warranty of
- z) C- J$ d- \* @ - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the; `, H- K" W% r6 `, G
- * GNU General Public License for more details.+ p- g- A9 {) Z! g; x. o8 H
- *
/ _! O/ o6 o* o; q5 |# b6 i$ Q - * You should have received a copy of the GNU General Public License
! m: f; e, w/ [7 H. o - * along with this program. If not, see <http://www.gnu.org/licenses/>.
0 }' |: D* z9 V4 o. x0 l - *4 Q" E$ i. B4 A8 y: v
- ******************************************************************************) Z. S W' z" b- L/ g
- */
; r* U0 |% r _) s - 4 h+ {& I0 k3 [9 @& z; i' ]
- /* Header includes -----------------------------------------------------------*/
1 ^ {; O$ \4 k, Z0 N( ? - #include "RingBuffer.h"
3 b. \9 Z. U& n7 L8 A* j% ?, y - #include <stdio.h>" ~ b: `" x4 [. h; e! H
- #include <windows.h>
. v0 h3 O/ J2 ~3 F# @7 W2 q4 d - ! W; Z9 D& j4 r% a% X$ ~
- /* Macro definitions ---------------------------------------------------------*/8 ] O. i/ T4 ^- L0 ]4 Z
- /* Type definitions ----------------------------------------------------------*/* A4 T+ d8 B' L+ c; C f3 V9 Q" Q
- /* Variable declarations -----------------------------------------------------*/
6 ^ }" d* a$ {6 ] - /* Variable definitions ------------------------------------------------------*/+ V6 K: m3 h- j
- /* Function declarations -----------------------------------------------------*/6 Q! ? t! C& E0 v/ | y
- /* Function definitions ------------------------------------------------------*/
3 x7 A7 J1 c% ^0 j7 I
7 b, Q5 D, i6 e+ V& ?% z- /**% ^ C' k4 E9 z7 g
- * @brief Main program.
' v* t7 c7 b& [+ E* a$ e - * @param None.: h$ X/ K- ^3 I8 r$ H5 Z
- * @return None.
* ?( S) F" U9 X. ^! v - */3 s( y' B+ X; D {7 [( m
- int main(void)
4 Y5 {# U! `1 N! | k4 T - {
/ Q* Q1 L2 B/ [; S3 l3 k - uint8_t data[256] = {0};5 r% R$ \$ A! W$ k: z
0 s( a( _3 y6 w- K+ N- for(int i = 0; i < sizeof(data); i++)* m& I/ S( A8 R
- {! z, I% t5 s& ]$ r; V" j" F
- data[i] = i;
" W5 }; Y0 \8 Y" R# c* | - }
2 R+ s j$ o# ~' \ - , R* }: N7 _9 C, r, ^
- RingBuffer *fifo = RingBuffer_Malloc(sizeof(data));
7 k1 ~2 z" U, O( i
) G6 s& V$ b4 b: ~2 n" y7 k- if(fifo != NULL)
t2 }9 ]$ |, [; U* s6 W - {
4 C1 @, h9 L: p4 i9 E, Q - printf("FIFO创建成功,FIFO大小:%d,使用大小:%d,剩余大小:%d\n",
* H5 D3 F3 {! }& O( k - RingBuffer_Size(fifo), RingBuffer_Len(fifo), RingBuffer_Avail(fifo));0 ?) j/ o: g( v* T" J
- 5 r! Q+ \% O7 G. |+ f2 Z$ b1 s7 p
- if(RingBuffer_IsFull(fifo) == true)4 `6 z3 g7 }7 h& L1 R# ]
- {( Q4 t5 X; G( u* j
- printf("FIFO满了!!!\n"); ?0 h% P+ y( W' z0 g
- }; \' @! X- A, e+ C j6 x
- else& i# ~+ o# K9 ^& L
- {
, T0 U& Y! B# \3 S0 m( }0 k - printf("FIFO没满!!!\n");' D0 ? A1 }( e7 S2 q
- }: }* C' m5 I, s0 r6 B0 k
- 3 o0 G0 Q# o! {( u. X5 Q
- if(RingBuffer_IsEmpty(fifo) == true)
y# A9 W0 ]4 S+ a, p - {% d1 ^3 T! L y5 {$ W4 p
- printf("FIFO空了!!!\n");) N: t: b: g5 m" w3 r! Y8 B( [ I
- }
" e2 n% {4 n5 A) b! V1 U - else$ E. i0 R& s& E9 m' G
- {2 j: m9 x4 N5 r7 Q+ {
- printf("FIFO没空!!!\n");8 U! _; c: v1 b9 ]5 O) k
- }8 X/ W' x9 c6 g
4 d6 G- N$ a2 V- printf("\n");# C' ^! z# I" u0 _( n+ `
- 8 T4 I6 i/ v ^: \& p
- for(;;)
, B H1 A- Y" s7 F - {! M q! T; m6 S" I: ~; y" M c0 d4 d
- {
1 e) v& F1 x1 E- @ - if(RingBuffer_In(fifo, data, sizeof(data) / 2) > 0)
/ N7 f. ^: C% ?: @ - {
# X$ C" B% |6 K% p' P+ ?3 M9 u - printf("FIFO写入成功,FIFO大小:%d,使用大小:%d,剩余大小:%d\n",
0 ]& Z# m( S1 D) x3 s6 J - RingBuffer_Size(fifo), RingBuffer_Len(fifo), RingBuffer_Avail(fifo));
% b" F. f; h; @2 P - }
" \& V* C: a7 }8 V/ v: N - else! f* s8 t' b% t3 X& y
- {
4 G1 l" O! C0 r - printf("FIFO写入失败,FIFO大小:%d,使用大小:%d,剩余大小:%d\n",
( R J) H Q6 D1 \4 i - RingBuffer_Size(fifo), RingBuffer_Len(fifo), RingBuffer_Avail(fifo));) t- e! ~0 `/ n$ w; d
- }3 A3 V& _, J" r2 W- N
$ u# v- x: Z2 E6 U7 _7 L5 R- if(RingBuffer_IsFull(fifo) == true)7 l+ a% _) E E% K
- {
5 J; E1 O0 W V0 b2 J% _% k* l - printf("FIFO满了!!!\n");/ k9 I9 {# {* S: l
- }% Q3 x3 M6 N6 p( D4 Q0 D4 [
- else8 C' Q( F9 v- U/ ]
- {
; d4 |; [: ~: i! `+ U$ r5 W - printf("FIFO没满!!!\n");1 `% l0 C# v* |, Q
- }
. o) p: z! A& K: K( j - 3 e) f' K0 r/ b) u$ B5 c& \+ p
- if(RingBuffer_IsEmpty(fifo) == true)- }4 }. ]! Z E! A4 A" X/ j
- {6 J% ~3 M" k8 S$ K# q9 f
- printf("FIFO空了!!!\n");
# O5 S7 o! m# i9 X) K, q6 E - }
/ ]3 n7 y. X% \; F - else
2 t: ~ L" V9 B/ P - {
$ K- i9 l8 F* i3 h, y/ K( E - printf("FIFO没空!!!\n");& m: w" u6 O! M2 {3 q7 P
- }# h7 k( t( g& }" }8 e: R% K
- }6 \1 i2 `4 b( t, E
- : |3 m2 Q: ]$ d- S
- printf("\n");
+ Q, C% s* {2 ?$ Y9 |$ L+ P' c
: w3 C% h, |: H4 b$ v, e- {
8 e* F. _ w2 L. k" k" y - uint8_t rdata[64] = {0};
1 g4 `) q4 P/ A: e* D$ K$ ] - uint8_t len = RingBuffer_Out(fifo, rdata, sizeof(rdata));2 [4 |2 _) }- y/ `
- " o2 P& W' a+ {! W
- if(len > 0)0 t% x% x9 q$ s' N
- {' R7 C, m1 s' h& p
- printf("从FIFO中读出的数据,长度:%d\n", len);
5 s9 \9 M' n- `' d - . K$ D( E4 M6 q+ H
- for(int i = 0; i < len; i++)+ G. ~8 X: c, L3 z
- {
! W9 l4 P8 L/ T2 @0 n5 J - printf("%d ", rdata[i]);( Y; |6 s- r4 y! U' x) N
- }
; s" H6 T4 T0 E) p' M+ l# X5 b& q
4 O$ t8 U, H5 _: }1 G- |! x4 `- printf("\n");
: w7 L, P: a7 u3 m3 J/ D7 F
0 x- |% N, M, G9 n# p7 Q- y( e- printf("FIFO读取成功,FIFO大小:%d,使用大小:%d,剩余大小:%d\n",
! @- ^" o! w& S& R* e2 H% y! n9 ` - RingBuffer_Size(fifo), RingBuffer_Len(fifo), RingBuffer_Avail(fifo));5 q: g+ Z% X& P. I
- }
4 @, o; H3 ~ R. w$ H, u - else
0 E5 l" D( T+ c6 R& g - {) E0 s9 U- ]& z+ \ {3 M, C
- printf("FIFO读取失败,FIFO大小:%d,使用大小:%d,剩余大小:%d\n",
; g6 Z# G; b7 K1 d - RingBuffer_Size(fifo), RingBuffer_Len(fifo), RingBuffer_Avail(fifo));
) z7 ^5 s4 w9 u0 k - }
5 g5 F; `0 N+ O+ m
- G7 L; g: {5 o" q" a- if(RingBuffer_IsFull(fifo) == true)
v# M. C/ _& M6 U. u - {
# @! w# X3 K% s0 x$ w4 j- F0 V0 L - printf("FIFO满了!!!\n");! h+ B" x" t, ~# e. H/ N! L
- }
4 V2 I$ Z4 c- V6 B, C" v1 o" q; l - else
3 C; A; i" I! v - {
% P. h* p5 o' V4 |9 [: m( b - printf("FIFO没满!!!\n");
% b! \2 p5 r$ o2 p1 ?# F, r - }4 @, u3 S+ [7 t
1 Q& A& T, t8 c0 i2 d8 Z2 X- if(RingBuffer_IsEmpty(fifo) == true)* k1 J3 u! ^; Y! K. Q7 T) ?6 m
- {
* ^0 e. F4 z$ _$ ` - printf("FIFO空了!!!\n");( D$ {! K- v" l, ?7 L5 x! @5 E
- }
* `' L8 v' D v - else
: ^! R0 J9 G* a( j - {
3 w9 F4 H# c% R - printf("FIFO没空!!!\n");- @# W0 T0 y& R
- }
t1 h. Q1 {/ w% D2 r4 y+ R - }* P6 e$ t- `) _2 X' @ a- u6 o9 F
& i2 c0 ]" i* f7 d2 N- printf("\n");/ Z+ w; m. H* Z
! Y% e4 b) W4 ^5 }- {
* `2 z( H' g4 j2 @/ F1 L- p - RingBuffer_Reset(fifo);
4 S& V+ @. W* |1 Z - printf("FIFO清空成功,FIFO大小:%d,使用大小:%d,剩余大小:%d\n",
7 G. {& `* o# [; `1 q/ C" r$ K) w2 ] - RingBuffer_Size(fifo), RingBuffer_Len(fifo), RingBuffer_Avail(fifo)); Y1 D. j- N2 d1 Q6 i
- # j& X, ~8 m. L1 T0 v
- if(RingBuffer_IsFull(fifo) == true)1 @; q) ]+ |6 _, o: P+ W1 Y4 F
- {
4 x) D9 U/ v7 g) A3 Q1 i - printf("FIFO满了!!!\n");
% @* z: j; D% y - }
# W7 z+ ?( f8 P1 Z7 y5 m! y - else
7 A" j o. a L F' v/ n - {
( V/ o" J. D8 g4 k7 D2 R. f' z2 g2 ? - printf("FIFO没满!!!\n");
1 i& m C3 j6 D$ D8 T - }1 C9 ~- ^4 _/ t; Y b1 A+ c
" e$ K6 G# a. f9 F6 F* B2 K- if(RingBuffer_IsEmpty(fifo) == true)
! |5 E& ?) d2 R% r: p( _! p3 ^ - {
# m; B& j+ F: f9 B& a" Y* l - printf("FIFO空了!!!\n");
7 H; W7 m/ l2 \6 Y- h - }( _4 I6 |/ X$ c# E* T; I
- else
* ^9 ^# y4 h- W1 C$ t6 }# {+ o - {
+ H5 j& y7 P. K( d' \/ o4 B+ i8 F4 r) R - printf("FIFO没空!!!\n");' c. @$ l0 ^7 H* g8 H
- }1 s8 V' C, n# J3 f2 |
- }7 z. P4 |* s5 x% \
4 e( d& S7 u4 w- printf("\n");" X1 {- O8 o( o1 z
- + y) i! I3 Q5 h' j
- {( u4 b( c/ t: t5 y
- if(RingBuffer_In(fifo, data, sizeof(data)) > 0). F7 \# B# N9 g( ~
- {1 c/ u8 h3 x% x8 p3 Y
- printf("FIFO写入成功,FIFO大小:%d,使用大小:%d,剩余大小:%d\n",
# T$ @1 Z- ]7 R; E M - RingBuffer_Size(fifo), RingBuffer_Len(fifo), RingBuffer_Avail(fifo));
- s" x6 V3 ?' i, z0 _% ]9 P( J - }8 w" \" z, L8 ^
- else
8 \9 E1 d6 U( h) V - {, I9 i% Y) t3 r' O# ~
- printf("FIFO写入失败,FIFO大小:%d,使用大小:%d,剩余大小:%d\n",( u7 J/ M8 Q* c- m4 F- ]" P* H# E' A
- RingBuffer_Size(fifo), RingBuffer_Len(fifo), RingBuffer_Avail(fifo));) E9 `+ s8 w) B$ W
- }1 e4 d7 j7 m- F
( l- E, G- o! k; ?9 ~- if(RingBuffer_IsFull(fifo) == true)2 O8 s7 F( [1 }5 x. Q
- {+ H% d% l7 t3 L- e' j% y- I9 z
- printf("FIFO满了!!!\n");) i: N$ U9 s; c- F
- }
: O8 t, J+ p0 {) g - else
3 }9 Y6 \# k/ \+ s% c& X - {
} x7 ~ ?" W - printf("FIFO没满!!!\n");
3 S8 n) s$ d7 V. b2 m! c( @: k, A - }
! e A# H& f+ P4 S6 x) s" V1 K - r; G Z2 c1 H a
- if(RingBuffer_IsEmpty(fifo) == true)
1 c% ]) n+ W" f# `$ O2 }9 a# R - {1 _4 l' f- u4 c/ U- ]8 |( {. `
- printf("FIFO空了!!!\n");
& {2 h4 V+ M L& f - }
2 n( b- E x7 z0 V% u - else
2 _; r: u4 B6 T - {
2 T; Y$ |5 o2 e - printf("FIFO没空!!!\n");
( k8 p& A4 G' N- C - } D" `0 e! X# \6 }
- }- I# Q) o( y' i6 k3 i
- " X, B+ k& ~2 U0 n3 Y
- printf("\n");
; }$ O+ h3 y* Y1 r - / S" [# u# k0 R7 r8 j
- {
3 J1 p! M: j% B4 D" Y - if(RingBuffer_In(fifo, data, sizeof(data)) > 0)
/ ]7 |) b6 d/ F9 t0 M - {9 a4 g# w9 x; b; D* r) v
- printf("FIFO写入成功,FIFO大小:%d,使用大小:%d,剩余大小:%d\n",- o7 _2 [2 [: W% \! S
- RingBuffer_Size(fifo), RingBuffer_Len(fifo), RingBuffer_Avail(fifo));
1 |* P- x* w! ^1 M% Z6 S# i - }1 V; b7 k0 I2 R; t" z4 [: s
- else
5 U8 R) T! C1 e - {3 y) z) _! H" ^7 v2 r6 I r' {: Q9 f7 v
- printf("FIFO写入失败,FIFO大小:%d,使用大小:%d,剩余大小:%d\n",/ P% j- e% p. Z
- RingBuffer_Size(fifo), RingBuffer_Len(fifo), RingBuffer_Avail(fifo));, {) \. f* @2 k5 W/ U4 k2 X& W
- }
) \! O5 p9 F( h5 X: I! d - - L: r; ] o& d$ ~7 w
- if(RingBuffer_IsFull(fifo) == true)
2 B6 e" p; S" \1 n8 ^ - {
* c( m) T9 ^0 W, Y1 f - printf("FIFO满了!!!\n");
* |8 d% d! M+ H3 p' ?# a - }4 R' g8 c0 m# p/ ?5 k) }
- else
9 Q5 S3 u( x) ^& d* |- n+ G& x - {" n: P; {* a9 }
- printf("FIFO没满!!!\n");' b; A y0 V+ K1 t
- }" p K+ H$ B+ j+ F! i
- 3 _& Z3 g: N7 i9 m9 l' a# [; N
- if(RingBuffer_IsEmpty(fifo) == true)
& q8 d8 c3 I u. i& _ - {
1 R, [. S# y" @+ D$ m4 k! k( ] - printf("FIFO空了!!!\n");9 ~& D: W$ n% T' w1 A a
- }
; j; ?( F0 C# O" Y( o1 q3 }& n - else0 b% q4 M# P- u! J7 s' d
- {
+ k0 k( D8 p: u* b8 w+ ~ - printf("FIFO没空!!!\n");
! V) T5 h. r4 F# P0 p! \7 D J - }& @4 z" x V- J3 A' F% s
- }$ X- e5 \* t6 `1 E
% g) _% c+ q0 B% x0 I' R( Q7 w- printf("\n");
* O) Y& |; Z F3 y" s9 s7 q: x
! q4 m% Y! d4 k- u- {$ d& Q' k" |6 V* g2 m
- uint8_t rdata[256] = {0};5 D/ t3 b, N% m+ L( E5 W) C; B
- uint16_t len = RingBuffer_Out(fifo, rdata, sizeof(rdata));
* q$ b' r0 E5 S8 q. f - `4 `8 n* y; i2 i& i
- if(len > 0)
/ | D* k1 s7 }5 N - {
" T0 T; R0 ]3 W - printf("从FIFO中读出的数据,长度:%d\n", len);
$ V$ _. N0 ?& U+ t0 v - # z8 \- a; A$ ?
- for(int i = 0; i < len; i++)
u$ K5 @' m: K2 z, Z - {
) ?6 k& {. W; v) U$ W - printf("%d ", rdata[i]);, f% {5 Z+ O% Q7 F' U7 F& p6 Q" I
- }* d' L4 ~. }7 {. Z$ H
- 0 Y6 d/ r- R& t. M7 \7 ~6 J% ~0 _
- printf("\n");/ U% |8 O3 Z" o9 [4 t
7 {( D$ @4 u3 [- printf("FIFO读取成功,FIFO大小:%d,使用大小:%d,剩余大小:%d\n",
2 y/ y" \3 H' N4 X! a0 z - RingBuffer_Size(fifo), RingBuffer_Len(fifo), RingBuffer_Avail(fifo));! U5 ?' D6 L" V
- }' s l# H4 R0 @
- else
. j, |5 e4 c& t$ i4 U4 `: ?3 @ - {
9 m. k- K0 z! [1 k$ ^ - printf("FIFO读取失败,FIFO大小:%d,使用大小:%d,剩余大小:%d\n",5 C6 D9 [0 z, e* p. S( _
- RingBuffer_Size(fifo), RingBuffer_Len(fifo), RingBuffer_Avail(fifo));
9 f6 q* e0 `2 I) A* L - }. b. }; R5 R2 ]; A
# M7 S6 p Z" s9 I, [- if(RingBuffer_IsFull(fifo) == true)
V# F# o3 M" R8 |& c1 | - {) y' f V1 [) Q5 d
- printf("FIFO满了!!!\n");2 D9 w- o$ \, L. w
- }* Y2 U0 O# |4 m" k6 O J, z
- else
) J' X0 Z4 z: L0 D - {6 O& w8 a. K0 K) Z3 t7 y9 X& @
- printf("FIFO没满!!!\n");
( _) z; z. c% C5 w- m2 D - }( K; n% r: R& w/ B( z; L& J
6 F# g( H9 g" i* ?3 @' o4 }) [- if(RingBuffer_IsEmpty(fifo) == true)( n5 v; J8 Q1 K, N
- {- C, R+ a' ?. w* C7 \8 Y9 `
- printf("FIFO空了!!!\n");! ], H* z3 D: J7 o/ h9 M k$ n
- }0 M: M# T, i( _1 j3 r2 Z, i! ]% |" J
- else7 F \+ v" ?3 w0 }1 {
- {
, B* Q7 k& D Q9 t! @8 G4 a" G5 L - printf("FIFO没空!!!\n");
) ?8 d E7 m1 o/ p - }
, A4 w4 I0 z W3 |9 z - }
" a, X: O# h( k( R( A1 ` - + s' c+ Q* r( t/ |
- printf("\n");5 l! }, }8 u' d* ?$ r5 U3 R; P1 r& P
- & d3 \. H( \. K
- {
# ^9 P% Z. g* q - uint8_t rdata[256] = {0};
' D0 |/ Q8 \9 b% Y5 i - uint16_t len = RingBuffer_Out(fifo, rdata, sizeof(rdata));
, q! P/ s& P% ]- e. X( [) `; n& a - ! a( \" R4 ?/ G6 T' {
- if(len > 0)1 U- U5 \" a2 j
- {
7 p# ^% G& f7 G, V" L( U( ]: ] - printf("从FIFO中读出的数据,长度:%d\n", len);
" t" Q; \9 v# f6 {; r7 J - : Q% B/ m% ]' `& R( z5 a
- for(int i = 0; i < len; i++)% w5 r5 |& M R8 e |& U3 f$ s
- {3 m/ Z1 k! r3 `1 f+ w
- printf("%d ", rdata[i]);! H4 \/ V& R) c! |# `$ h9 V7 ~& {/ E
- }% b" X2 c: L4 z E9 a# z* x
% W) L4 S, m6 w; K- printf("\n");
0 [4 J0 [4 y; o$ H- M - " U( Z% p( s. S# G$ J
- printf("FIFO读取成功,FIFO大小:%d,使用大小:%d,剩余大小:%d\n",
; M0 G1 q) d7 J2 q& L( M; ^- ]' l$ S - RingBuffer_Size(fifo), RingBuffer_Len(fifo), RingBuffer_Avail(fifo));
: ~5 R; {8 A0 [ - }
0 G x; A, F+ C) D0 W) Z - else, V- D( j+ e& c0 G* r
- {5 v. O2 W% B' y; V3 D
- printf("FIFO读取失败,FIFO大小:%d,使用大小:%d,剩余大小:%d\n",
1 t% f7 W7 y, b/ `. f3 C - RingBuffer_Size(fifo), RingBuffer_Len(fifo), RingBuffer_Avail(fifo));
! l9 O- i+ u( Q* E. K/ G2 a - }
' ~$ i' k7 ]' n/ `
3 k# i- ]. m, W! [# \) n- if(RingBuffer_IsFull(fifo) == true)4 G. S* h) Y: r7 j9 l% \+ C; s
- {
- ~; i5 @; i/ S" f& p6 g J" v - printf("FIFO满了!!!\n");
. y9 d2 |, M4 E! i6 ~0 a, x - }
+ r) C' i& u4 N. e1 a - else7 l# ]) }0 \/ D: u
- {! J1 D% p! t4 ^) f# e
- printf("FIFO没满!!!\n");
: d7 u9 C2 r$ R3 u3 X) g - }
) w) Z6 Y, y) D& e" ^( x
7 [/ P s1 a6 D' E- if(RingBuffer_IsEmpty(fifo) == true)
3 G. w; ^) E) O0 [/ s2 P - {* A1 Z0 N( r( d& V1 Q
- printf("FIFO空了!!!\n");0 H- @7 {& M9 ?+ y% C1 m) k
- }
* [2 N( i4 u; k, l+ T, D - else
. s/ s: x, y2 M4 K. V# x( b& s - {" ` H3 y: p2 c5 y
- printf("FIFO没空!!!\n");) ] x; [. o$ x0 ?' w# S
- }3 | r3 o3 s7 Q8 B: A% |
- }! ^9 v0 z* n3 d2 \2 B
- 2 B; i4 e7 b: F8 \7 M" i/ f
- printf("\n\n\n");/ W& t2 }- ]% z+ C! |
- Sleep(5000);
% T) J0 P8 ^, k4 W: N, h - }5 J g" t: q, j9 W
- }
# p4 d$ N$ g+ u2 x - else
8 s0 R9 W2 }! e _4 P2 V - {
+ T" {* N* ~0 l+ q - printf("FIFO创建失败\n");7 u0 a: _8 T6 Q, h- p, M6 k
- }
: K- z0 E" k$ i% @' M0 B5 m; [ - : H& q( a+ L8 t% ?; `7 O
- for(;;)
: M- ?2 F V6 N: x* B - {
. D6 {# }3 t* R3 R: P, s - 0 Q3 e- q9 M: ~* e! @* ?* ?
- }9 k" y" c8 k$ A) v0 ^
- }: _( w6 \* m0 H5 q
复制代码
! D. G1 l1 @% \3,运行效果* Y. y7 u7 L5 R6 m" P
" m; l% G' x$ @' ]& B2 d
|