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daf70305
编写于
2年前
作者:
A
Annie_wang
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电子邮件补丁
差异文件
update docs
Signed-off-by:
N
Annie_wang
<
annie.wangli@huawei.com
>
上级
87feb56e
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en/device-dev/driver/driver-platform-gpio-des.md
en/device-dev/driver/driver-platform-gpio-des.md
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en/device-dev/driver/driver-platform-gpio-des.md
浏览文件 @
daf70305
...
...
@@ -11,7 +11,7 @@ The GPIO APIs define a set of standard functions for performing operations on GP
-
Reading and writing the pin level, which can be low or high
-
Setting
an
interrupt service routine (ISR) function and interrupt trigger mode for a pin
-
Setting
the
interrupt service routine (ISR) function and interrupt trigger mode for a pin
-
Enabling or disabling pin interrupts
...
...
@@ -70,7 +70,9 @@ The method for determining the GPIO pin number varies depending on the GPIO cont
-
Set the GPIO pin direction.
Before performing read/write operations on a GPIO pin, call
**GpioSetDir()**
to set the pin direction.
```
c
int32_t
GpioSetDir
(
uint16_t
gpio
,
uint16_t
dir
);
```
**Table 2** Description of GpioSetDir
...
...
@@ -86,7 +88,9 @@ The method for determining the GPIO pin number varies depending on the GPIO cont
Call
**GpioRead()**
to read the level of a GPIO pin.
int32_t GpioRead(uint16_t gpio, uint16_t
\*
val);
```
c
int32_t
GpioRead
(
uint16_t
gpio
,
uint16_t
*
val
);
```
**Table 3** Description of GpioRead
...
...
@@ -100,8 +104,10 @@ The method for determining the GPIO pin number varies depending on the GPIO cont
Call
**GpioWrite()**
to write the level for a GPIO pin.
```
c
int32_t
GpioWrite
(
uint16_t
gpio
,
uint16_t
val
);
```
**Table 4**
Description of GpioWrite
|
**Parameter**
|
**Description**
|
...
...
@@ -114,7 +120,7 @@ The method for determining the GPIO pin number varies depending on the GPIO cont
Sample code:
```
int32_t ret;
uint16_t val;
...
...
@@ -144,8 +150,10 @@ The method for determining the GPIO pin number varies depending on the GPIO cont
Call
**GpioSetIrq()**
to set the ISR function for a GPIO pin.
int32_t GpioSetIrq(uint16_t gpio, uint16_t mode, GpioIrqFunc func, void
\*
arg);
```
c
int32_t
GpioSetIrq
(
uint16_t
gpio
,
uint16_t
mode
,
GpioIrqFunc
func
,
void
*
arg
);
```
**Table 5**
Description of GpioSetIrq
|
**Parameter**
|
**Description**
|
...
...
@@ -163,7 +171,9 @@ The method for determining the GPIO pin number varies depending on the GPIO cont
If the ISR function is no longer required, call
**GpioUnsetIrq()**
to cancel it.
int32_t GpioUnsetIrq(uint16_t gpio, void
\*
arg);
```
c
int32_t
GpioUnsetIrq
(
uint16_t
gpio
,
void
*
arg
);
```
**Table 6** Description of GpioUnsetIrq
...
...
@@ -177,7 +187,9 @@ The method for determining the GPIO pin number varies depending on the GPIO cont
After the ISR function is set, call
**GpioEnableIrq()**
to enable interrupts for the GPIO pin.
```
c
int32_t
GpioEnableIrq
(
uint16_t
gpio
);
```
**Table 7** Description of GpioEnableIrq
...
...
@@ -193,7 +205,9 @@ The method for determining the GPIO pin number varies depending on the GPIO cont
You can call
**GpioDisableIrq**
to disable interrupts for the pin.
```
c
int32_t
GpioDisableIrq
(
uint16_t
gpio
);
```
**Table 8** Description of GpioDisableIrq
...
...
@@ -206,7 +220,7 @@ The method for determining the GPIO pin number varies depending on the GPIO cont
Sample code:
```
/* Set the ISR function. */
int32_t MyCallBackFunc(uint16_t gpio, void *data)
...
...
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