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rt-thread
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952bc0d4
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952bc0d4
编写于
5月 08, 2013
作者:
G
Grissiom
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
ringbuffer: format the code to a more symmetric structure
上级
639bd303
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
30 addition
and
28 deletion
+30
-28
components/drivers/src/ringbuffer.c
components/drivers/src/ringbuffer.c
+30
-28
未找到文件。
components/drivers/src/ringbuffer.c
浏览文件 @
952bc0d4
...
...
@@ -10,6 +10,7 @@
* Change Logs:
* Date Author Notes
* 2012-09-30 Bernard first version.
* 2013-05-08 Grissiom reimplement
*/
#include <rtthread.h>
...
...
@@ -77,33 +78,6 @@ rt_size_t rt_ringbuffer_put(struct rt_ringbuffer *rb,
}
RTM_EXPORT
(
rt_ringbuffer_put
);
/**
* put a character into ring buffer
*/
rt_size_t
rt_ringbuffer_putchar
(
struct
rt_ringbuffer
*
rb
,
const
rt_uint8_t
ch
)
{
RT_ASSERT
(
rb
!=
RT_NULL
);
/* whether has enough space */
if
(
!
RT_RINGBUFFER_EMPTY
(
rb
))
return
0
;
rb
->
buffer_ptr
[
rb
->
write_index
]
=
ch
;
/* flip mirror */
if
(
rb
->
write_index
==
rb
->
buffer_size
-
1
)
{
rb
->
write_mirror
=
~
rb
->
write_mirror
;
rb
->
write_index
=
0
;
}
else
{
rb
->
write_index
++
;
}
return
1
;
}
RTM_EXPORT
(
rt_ringbuffer_putchar
);
/**
* get data from ring buffer
*/
...
...
@@ -136,7 +110,6 @@ rt_size_t rt_ringbuffer_get(struct rt_ringbuffer *rb,
return
length
;
}
/* copy first and second */
memcpy
(
&
ptr
[
0
],
&
rb
->
buffer_ptr
[
rb
->
read_index
],
rb
->
buffer_size
-
rb
->
read_index
);
...
...
@@ -152,6 +125,34 @@ rt_size_t rt_ringbuffer_get(struct rt_ringbuffer *rb,
}
RTM_EXPORT
(
rt_ringbuffer_get
);
/**
* put a character into ring buffer
*/
rt_size_t
rt_ringbuffer_putchar
(
struct
rt_ringbuffer
*
rb
,
const
rt_uint8_t
ch
)
{
RT_ASSERT
(
rb
!=
RT_NULL
);
/* whether has enough space */
if
(
!
RT_RINGBUFFER_EMPTY
(
rb
))
return
0
;
rb
->
buffer_ptr
[
rb
->
write_index
]
=
ch
;
/* flip mirror */
if
(
rb
->
write_index
==
rb
->
buffer_size
-
1
)
{
rb
->
write_mirror
=
~
rb
->
write_mirror
;
rb
->
write_index
=
0
;
}
else
{
rb
->
write_index
++
;
}
return
1
;
}
RTM_EXPORT
(
rt_ringbuffer_putchar
);
/**
* get a character from a ringbuffer
*/
...
...
@@ -179,3 +180,4 @@ rt_size_t rt_ringbuffer_getchar(struct rt_ringbuffer *rb, rt_uint8_t *ch)
return
1
;
}
RTM_EXPORT
(
rt_ringbuffer_getchar
);
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