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体验新版 GitCode,发现更多精彩内容 >>
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8f65ea4e
编写于
11月 27, 2021
作者:
C
chenyingchun0312
浏览文件
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电子邮件补丁
差异文件
[bsp/nrf5x] fix i2c driver bug
上级
e055a007
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
33 addition
and
14 deletion
+33
-14
bsp/nrf5x/libraries/drivers/drv_i2c.c
bsp/nrf5x/libraries/drivers/drv_i2c.c
+33
-14
未找到文件。
bsp/nrf5x/libraries/drivers/drv_i2c.c
浏览文件 @
8f65ea4e
...
...
@@ -6,6 +6,7 @@
* Change Logs:
* Date Author Notes
* 2020-11-15 xckhmf First Verison
* 2021-11-27 chenyingchun fix _master_xfer bug
*
*/
...
...
@@ -56,36 +57,54 @@ static int twi_master_init(struct rt_i2c_bus_device *bus)
nrfx_twi_twim_bus_recover
(
config
.
scl
,
config
.
sda
);
rtn
=
nrfx_twim_init
(
p_instance
,
&
config
,
NULL
,
NULL
);
if
(
rtn
!=
NRFX_SUCCESS
)
{
return
rtn
;
}
nrfx_twim_enable
(
p_instance
);
return
0
;
}
static
rt_size_t
_master_xfer
(
struct
rt_i2c_bus_device
*
bus
,
struct
rt_i2c_msg
msgs
[],
rt_uint32_t
num
)
struct
rt_i2c_msg
msgs
[],
rt_uint32_t
num
)
{
nrfx_twim_t
const
*
p_instance
=
&
((
drv_i2c_cfg_t
*
)
bus
->
priv
)
->
twi_instance
;
struct
rt_i2c_msg
*
msg
;
nrfx_twim_t
const
*
p_instance
=
&
((
drv_i2c_cfg_t
*
)
bus
->
priv
)
->
twi_instance
;
nrfx_err_t
ret
=
NRFX_ERROR_INTERNAL
;
uint32_t
no_stop_flag
=
0
;
rt_int32_t
i
=
0
;
nrfx_twim_xfer_desc_t
xfer
=
NRFX_TWIM_XFER_DESC_TX
(
msgs
->
addr
,
msgs
->
buf
,
msgs
->
len
);
if
((
msgs
->
flags
&
0x01
)
==
RT_I2C_WR
)
for
(
i
=
0
;
i
<
num
;
i
++
)
{
xfer
.
type
=
NRFX_TWIM_XFER_TX
;
if
((
msgs
->
flags
&
0x40
)
==
RT_I2C_NO_READ_ACK
)
msg
=
&
msgs
[
i
];
nrfx_twim_xfer_desc_t
xfer
=
NRFX_TWIM_XFER_DESC_TX
(
msg
->
addr
,
msg
->
buf
,
msg
->
len
);
if
(
msg
->
flags
&
RT_I2C_RD
)
{
no_stop_flag
=
NRFX_TWIM_FLAG_TX_NO_STOP
;
xfer
.
type
=
NRFX_TWIM_XFER_RX
;
}
else
{
xfer
.
type
=
NRFX_TWIM_XFER_TX
;
if
(
msg
->
flags
&
RT_I2C_NO_READ_ACK
)
{
no_stop_flag
=
NRFX_TWIM_FLAG_TX_NO_STOP
;
}
}
ret
=
nrfx_twim_xfer
(
p_instance
,
&
xfer
,
no_stop_flag
);
if
(
ret
!=
NRFX_SUCCESS
)
{
goto
out
;
}
}
else
if
((
msgs
->
flags
&
0x01
)
==
RT_I2C_RD
)
{
xfer
.
type
=
NRFX_TWIM_XFER_RX
;
}
ret
=
nrfx_twim_xfer
(
p_instance
,
&
xfer
,
no_stop_flag
);
return
(
ret
==
NRFX_SUCCESS
)
?
msgs
->
len
:
0
;
out:
return
i
;
}
static
const
struct
rt_i2c_bus_device_ops
_i2c_ops
=
{
_master_xfer
,
...
...
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