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5098c934
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体验新版 GitCode,发现更多精彩内容 >>
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5098c934
编写于
12月 08, 2018
作者:
C
chenchaoqun@rt-thread.com
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
[add] DMA choice of serial
上级
538923d3
变更
2
隐藏空白更改
内联
并排
Showing
2 changed file
with
73 addition
and
43 deletion
+73
-43
components/drivers/Kconfig
components/drivers/Kconfig
+6
-0
components/drivers/serial/serial.c
components/drivers/serial/serial.c
+67
-43
未找到文件。
components/drivers/Kconfig
浏览文件 @
5098c934
...
...
@@ -16,6 +16,12 @@ config RT_USING_SERIAL
select RT_USING_DEVICE
default y
if RT_USING_SERIAL
config RT_SERIAL_USING_DMA
bool "Enable serial DMA mode"
default y
endif
config RT_USING_CAN
bool "Using CAN device drivers"
default n
...
...
components/drivers/serial/serial.c
浏览文件 @
5098c934
...
...
@@ -21,6 +21,7 @@
* 2017-11-07 JasonJia fix data bits error issue when using tcsetattr.
* 2017-11-15 JasonJia fix poll rx issue when data is full.
* add TCFLSH and FIONREAD support.
* 2018-12-08 Ernest Chen add DMA choice
*/
#include <rthw.h>
...
...
@@ -328,6 +329,7 @@ rt_inline int _serial_int_tx(struct rt_serial_device *serial, const rt_uint8_t *
return
size
-
length
;
}
#if defined(RT_USING_POSIX) || defined(RT_SERIAL_USING_DMA)
static
rt_size_t
_serial_fifo_calc_recved_len
(
struct
rt_serial_device
*
serial
)
{
struct
rt_serial_rx_fifo
*
rx_fifo
=
(
struct
rt_serial_rx_fifo
*
)
serial
->
serial_rx
;
...
...
@@ -350,7 +352,9 @@ static rt_size_t _serial_fifo_calc_recved_len(struct rt_serial_device *serial)
}
}
}
#endif
/* RT_USING_POSIX || RT_SERIAL_USING_DMA */
#ifdef RT_SERIAL_USING_DMA
/**
* Calculate DMA received data length.
*
...
...
@@ -527,6 +531,7 @@ rt_inline int _serial_dma_tx(struct rt_serial_device *serial, const rt_uint8_t *
return
0
;
}
}
#endif
/* RT_SERIAL_USING_DMA */
/* RT-Thread Device Interface */
/*
...
...
@@ -561,11 +566,13 @@ static rt_err_t rt_serial_open(struct rt_device *dev, rt_uint16_t oflag)
LOG_D
(
"open serial device: 0x%08x with open flag: 0x%04x"
,
dev
,
oflag
);
#ifdef RT_SERIAL_USING_DMA
/* check device flag with the open flag */
if
((
oflag
&
RT_DEVICE_FLAG_DMA_RX
)
&&
!
(
dev
->
flag
&
RT_DEVICE_FLAG_DMA_RX
))
return
-
RT_EIO
;
if
((
oflag
&
RT_DEVICE_FLAG_DMA_TX
)
&&
!
(
dev
->
flag
&
RT_DEVICE_FLAG_DMA_TX
))
return
-
RT_EIO
;
#endif
/* RT_SERIAL_USING_DMA */
if
((
oflag
&
RT_DEVICE_FLAG_INT_RX
)
&&
!
(
dev
->
flag
&
RT_DEVICE_FLAG_INT_RX
))
return
-
RT_EIO
;
if
((
oflag
&
RT_DEVICE_FLAG_INT_TX
)
&&
!
(
dev
->
flag
&
RT_DEVICE_FLAG_INT_TX
))
...
...
@@ -580,8 +587,27 @@ static rt_err_t rt_serial_open(struct rt_device *dev, rt_uint16_t oflag)
/* initialize the Rx/Tx structure according to open flag */
if
(
serial
->
serial_rx
==
RT_NULL
)
{
if
(
oflag
&
RT_DEVICE_FLAG_DMA_RX
)
{
if
(
oflag
&
RT_DEVICE_FLAG_INT_RX
)
{
struct
rt_serial_rx_fifo
*
rx_fifo
;
rx_fifo
=
(
struct
rt_serial_rx_fifo
*
)
rt_malloc
(
sizeof
(
struct
rt_serial_rx_fifo
)
+
serial
->
config
.
bufsz
);
RT_ASSERT
(
rx_fifo
!=
RT_NULL
);
rx_fifo
->
buffer
=
(
rt_uint8_t
*
)
(
rx_fifo
+
1
);
rt_memset
(
rx_fifo
->
buffer
,
0
,
serial
->
config
.
bufsz
);
rx_fifo
->
put_index
=
0
;
rx_fifo
->
get_index
=
0
;
rx_fifo
->
is_full
=
RT_FALSE
;
serial
->
serial_rx
=
rx_fifo
;
dev
->
open_flag
|=
RT_DEVICE_FLAG_INT_RX
;
/* configure low level device */
serial
->
ops
->
control
(
serial
,
RT_DEVICE_CTRL_SET_INT
,
(
void
*
)
RT_DEVICE_FLAG_INT_RX
);
}
#ifdef RT_SERIAL_USING_DMA
else
if
(
oflag
&
RT_DEVICE_FLAG_DMA_RX
)
{
if
(
serial
->
config
.
bufsz
==
0
)
{
struct
rt_serial_rx_dma
*
rx_dma
;
...
...
@@ -608,24 +634,7 @@ static rt_err_t rt_serial_open(struct rt_device *dev, rt_uint16_t oflag)
}
dev
->
open_flag
|=
RT_DEVICE_FLAG_DMA_RX
;
}
else
if
(
oflag
&
RT_DEVICE_FLAG_INT_RX
)
{
struct
rt_serial_rx_fifo
*
rx_fifo
;
rx_fifo
=
(
struct
rt_serial_rx_fifo
*
)
rt_malloc
(
sizeof
(
struct
rt_serial_rx_fifo
)
+
serial
->
config
.
bufsz
);
RT_ASSERT
(
rx_fifo
!=
RT_NULL
);
rx_fifo
->
buffer
=
(
rt_uint8_t
*
)
(
rx_fifo
+
1
);
rt_memset
(
rx_fifo
->
buffer
,
0
,
serial
->
config
.
bufsz
);
rx_fifo
->
put_index
=
0
;
rx_fifo
->
get_index
=
0
;
rx_fifo
->
is_full
=
RT_FALSE
;
serial
->
serial_rx
=
rx_fifo
;
dev
->
open_flag
|=
RT_DEVICE_FLAG_INT_RX
;
/* configure low level device */
serial
->
ops
->
control
(
serial
,
RT_DEVICE_CTRL_SET_INT
,
(
void
*
)
RT_DEVICE_FLAG_INT_RX
);
}
#endif
/* RT_SERIAL_USING_DMA */
else
{
serial
->
serial_rx
=
RT_NULL
;
...
...
@@ -633,28 +642,17 @@ static rt_err_t rt_serial_open(struct rt_device *dev, rt_uint16_t oflag)
}
else
{
if
(
oflag
&
RT_DEVICE_FLAG_DMA_RX
)
dev
->
open_flag
|=
RT_DEVICE_FLAG_DMA_RX
;
else
if
(
oflag
&
RT_DEVICE_FLAG_INT_RX
)
if
(
oflag
&
RT_DEVICE_FLAG_INT_RX
)
dev
->
open_flag
|=
RT_DEVICE_FLAG_INT_RX
;
#ifdef RT_SERIAL_USING_DMA
else
if
(
oflag
&
RT_DEVICE_FLAG_DMA_RX
)
dev
->
open_flag
|=
RT_DEVICE_FLAG_DMA_RX
;
#endif
/* RT_SERIAL_USING_DMA */
}
if
(
serial
->
serial_tx
==
RT_NULL
)
{
if
(
oflag
&
RT_DEVICE_FLAG_DMA_TX
)
{
struct
rt_serial_tx_dma
*
tx_dma
;
tx_dma
=
(
struct
rt_serial_tx_dma
*
)
rt_malloc
(
sizeof
(
struct
rt_serial_tx_dma
));
RT_ASSERT
(
tx_dma
!=
RT_NULL
);
tx_dma
->
activated
=
RT_FALSE
;
rt_data_queue_init
(
&
(
tx_dma
->
data_queue
),
8
,
4
,
RT_NULL
);
serial
->
serial_tx
=
tx_dma
;
dev
->
open_flag
|=
RT_DEVICE_FLAG_DMA_TX
;
}
else
if
(
oflag
&
RT_DEVICE_FLAG_INT_TX
)
if
(
oflag
&
RT_DEVICE_FLAG_INT_TX
)
{
struct
rt_serial_tx_fifo
*
tx_fifo
;
...
...
@@ -668,6 +666,21 @@ static rt_err_t rt_serial_open(struct rt_device *dev, rt_uint16_t oflag)
/* configure low level device */
serial
->
ops
->
control
(
serial
,
RT_DEVICE_CTRL_SET_INT
,
(
void
*
)
RT_DEVICE_FLAG_INT_TX
);
}
#ifdef RT_SERIAL_USING_DMA
else
if
(
oflag
&
RT_DEVICE_FLAG_DMA_TX
)
{
struct
rt_serial_tx_dma
*
tx_dma
;
tx_dma
=
(
struct
rt_serial_tx_dma
*
)
rt_malloc
(
sizeof
(
struct
rt_serial_tx_dma
));
RT_ASSERT
(
tx_dma
!=
RT_NULL
);
tx_dma
->
activated
=
RT_FALSE
;
rt_data_queue_init
(
&
(
tx_dma
->
data_queue
),
8
,
4
,
RT_NULL
);
serial
->
serial_tx
=
tx_dma
;
dev
->
open_flag
|=
RT_DEVICE_FLAG_DMA_TX
;
}
#endif
/* RT_SERIAL_USING_DMA */
else
{
serial
->
serial_tx
=
RT_NULL
;
...
...
@@ -675,10 +688,12 @@ static rt_err_t rt_serial_open(struct rt_device *dev, rt_uint16_t oflag)
}
else
{
if
(
oflag
&
RT_DEVICE_FLAG_DMA_TX
)
dev
->
open_flag
|=
RT_DEVICE_FLAG_DMA_TX
;
else
if
(
oflag
&
RT_DEVICE_FLAG_INT_TX
)
if
(
oflag
&
RT_DEVICE_FLAG_INT_TX
)
dev
->
open_flag
|=
RT_DEVICE_FLAG_INT_TX
;
#ifdef RT_SERIAL_USING_DMA
else
if
(
oflag
&
RT_DEVICE_FLAG_DMA_TX
)
dev
->
open_flag
|=
RT_DEVICE_FLAG_DMA_TX
;
#endif
/* RT_SERIAL_USING_DMA */
}
/* set stream flag */
...
...
@@ -710,6 +725,7 @@ static rt_err_t rt_serial_close(struct rt_device *dev)
/* configure low level device */
serial
->
ops
->
control
(
serial
,
RT_DEVICE_CTRL_CLR_INT
,
(
void
*
)
RT_DEVICE_FLAG_INT_RX
);
}
#ifdef RT_SERIAL_USING_DMA
else
if
(
dev
->
open_flag
&
RT_DEVICE_FLAG_DMA_RX
)
{
if
(
serial
->
config
.
bufsz
==
0
)
{
...
...
@@ -732,7 +748,8 @@ static rt_err_t rt_serial_close(struct rt_device *dev)
serial
->
serial_rx
=
RT_NULL
;
dev
->
open_flag
&=
~
RT_DEVICE_FLAG_DMA_RX
;
}
#endif
/* RT_SERIAL_USING_DMA */
if
(
dev
->
open_flag
&
RT_DEVICE_FLAG_INT_TX
)
{
struct
rt_serial_tx_fifo
*
tx_fifo
;
...
...
@@ -746,6 +763,7 @@ static rt_err_t rt_serial_close(struct rt_device *dev)
/* configure low level device */
serial
->
ops
->
control
(
serial
,
RT_DEVICE_CTRL_CLR_INT
,
(
void
*
)
RT_DEVICE_FLAG_INT_TX
);
}
#ifdef RT_SERIAL_USING_DMA
else
if
(
dev
->
open_flag
&
RT_DEVICE_FLAG_DMA_TX
)
{
struct
rt_serial_tx_dma
*
tx_dma
;
...
...
@@ -757,7 +775,7 @@ static rt_err_t rt_serial_close(struct rt_device *dev)
serial
->
serial_tx
=
RT_NULL
;
dev
->
open_flag
&=
~
RT_DEVICE_FLAG_DMA_TX
;
}
#endif
/* RT_SERIAL_USING_DMA */
return
RT_EOK
;
}
...
...
@@ -777,10 +795,12 @@ static rt_size_t rt_serial_read(struct rt_device *dev,
{
return
_serial_int_rx
(
serial
,
buffer
,
size
);
}
#ifdef RT_SERIAL_USING_DMA
else
if
(
dev
->
open_flag
&
RT_DEVICE_FLAG_DMA_RX
)
{
return
_serial_dma_rx
(
serial
,
buffer
,
size
);
}
#endif
/* RT_SERIAL_USING_DMA */
return
_serial_poll_rx
(
serial
,
buffer
,
size
);
}
...
...
@@ -801,10 +821,12 @@ static rt_size_t rt_serial_write(struct rt_device *dev,
{
return
_serial_int_tx
(
serial
,
buffer
,
size
);
}
#ifdef RT_SERIAL_USING_DMA
else
if
(
dev
->
open_flag
&
RT_DEVICE_FLAG_DMA_TX
)
{
return
_serial_dma_tx
(
serial
,
buffer
,
size
);
}
#endif
/* RT_SERIAL_USING_DMA */
else
{
return
_serial_poll_tx
(
serial
,
buffer
,
size
);
...
...
@@ -1181,12 +1203,13 @@ void rt_hw_serial_isr(struct rt_serial_device *serial, int event)
rt_completion_done
(
&
(
tx_fifo
->
completion
));
break
;
}
#ifdef RT_SERIAL_USING_DMA
case
RT_SERIAL_EVENT_TX_DMADONE
:
{
const
void
*
data_ptr
;
rt_size_t
data_size
;
const
void
*
last_data_ptr
;
struct
rt_serial_tx_dma
*
tx_dma
;
struct
rt_serial_tx_dma
*
tx_dma
;
tx_dma
=
(
struct
rt_serial_tx_dma
*
)
serial
->
serial_tx
;
...
...
@@ -1246,6 +1269,7 @@ void rt_hw_serial_isr(struct rt_serial_device *serial, int event)
}
break
;
}
#endif
/* RT_SERIAL_USING_DMA */
}
}
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