DRV_GPIO

DRV_GPIO API Status

API
`drv_gpio_initialise()`
`drv_gpio_pin_config_pull()`
`drv_gpio_pin_config_output()`
`drv_gpio_pin_output_reverse()`
`drv_gpio_pin_enable_input()`
`drv_gpio_pin_get_input()`
`drv_gpio_pin_reg_intr_callback()`
`drv_gpio_pin_enable_function()`
`drv_gpio_pin_enter_highz()`
`drv_gpio_pin_set_driver_capacity()`

DRV_GPIO API Reference

Header File

driver/gpio/drv_gpio.h

Functions

int32_t drv_gpio_initialise(void)

gpio driver initialise.

gpio driver的初始化，主要是中断的注册，开机的时候调用一次

返回值:

0 – success [BK_RET_OK]
other – fail

返回:

result

int32_t drv_gpio_pin_config_pull(uint32_t gpio_pin_id, bool pull_en, bool pull_down)

config gpio pull.

设置gpio的上拉/下拉，或者不进行上下拉

参数:

gpio_pin_id – [in] gpio pin index, from 0 to GPIO_PIN_NUM
pull_en – [in] true: enable pull false: disable pull
pull_down – [in] true: pull down false: pull up (it works only when pull_en is true)

返回值:

0 – success [BK_RET_OK]
other – fail

返回:

result

int32_t drv_gpio_pin_config_output(uint32_t gpio_pin_id, bool output_en, bool out_high)

config gpio output.

配置gpio的输出功能，是否输出，输出高还是低

参数:

gpio_pin_id – [in] gpio pin index, from 0 to GPIO_PIN_NUM-1
output_en – [in] output enable, true: enable false: disable output
out_high – [in] true: output 1 false: output 0 (it works only when output_en is true)

返回值:

0 – success [BK_RET_OK]
other – fail

返回:

result

int32_t drv_gpio_pin_output_reverse(uint32_t gpio_pin_id)

reverse gpio output value.

reverse gpio output value

参数:

gpio_pin_id – [in] gpio pin index, from 0 to GPIO_PIN_NUM-1

返回值:

0 – success [BK_RET_OK]
other – fail

返回:

result

int32_t drv_gpio_pin_enable_input(uint32_t gpio_pin_id, bool input_en)

enable gpio input function or not.

是否打开gpio的输入功能

参数:

gpio_pin_id – [in] gpio pin index, from 0 to GPIO_PIN_NUM-1
input_en – [in] true: enable input function false: disable input function

返回值:

0 – success [BK_RET_OK]
other – fail

返回:

result

uint32_t drv_gpio_pin_get_input(uint32_t gpio_pin_id)

get input value.

获取当前gpio的输入值，0(低电平) 1(高电平)

参数:: gpio_pin_id – [in] gpio pin index, from 0 to GPIO_PIN_NUM-1
返回:: input value

int32_t drv_gpio_pin_reg_intr_callback(uint32_t gpio_pin_id, drv_gpio_intr_cond_e e_type, pfunc_gpio_cb_t pfn_cb)

register gpio callback.

注册GPIO的中断处理函数，如果想关掉中断，将参数pfn_cb赋为NULL即可

参数:

gpio_pin_id – [in] gpio pin index, from 0 to GPIO_PIN_NUM-1
e_type – [in] 产生中断的条件, see drv_gpio_intr_cond_e
pfn_cb – [in] interrupt callback, disable interrupt if it is NULL

返回值:

0 – success [BK_RET_OK]
other – fail

返回:

result

int32_t drv_gpio_pin_enable_function(uint32_t gpio_pin_id, bool func_en, gpio_func_e e_func)

enable gpio peripheral function or not.

打开或关闭GPIO的外设功能

参数:

gpio_pin_id – [in] gpio pin index, from 0 to GPIO_PIN_NUM-1
func_en – [in] true: enable function false: disable function
e_func – [in] see gpio_func_e (it works only when func_en is true)

返回值:

0 – success [BK_RET_OK]
other – fail

返回:

result

int32_t drv_gpio_pin_enter_highz(uint32_t gpio_pin_id)

make the gpio enter high Z.

参数:

gpio_pin_id – [in] gpio pin index, from 0 to GPIO_PIN_NUM-1

返回值:

0 – success [BK_RET_OK]
other – fail

返回:

result

int32_t drv_gpio_pin_set_driver_capacity(uint32_t gpio_pin_id, uint8_t value)

set gpio driver capacity.

参数:

gpio_pin_id – [in] gpio pin index, from 0 to GPIO_PIN_NUM-1]
value – [in] driver level, form 0 to 3

返回值:

0 – success [BK_RET_OK]
other – fail

返回:

result

Macros

GPIO_PIN0

GPIO_PIN1

GPIO_PIN2

GPIO_PIN3

GPIO_PIN4

GPIO_PIN5

GPIO_PIN6

GPIO_PIN7

GPIO_PIN8

GPIO_PIN9

GPIO_PIN10

GPIO_PIN11

GPIO_PIN12

GPIO_PIN13

GPIO_PIN14

GPIO_PIN15

GPIO_PIN16

GPIO_PIN17

GPIO_PIN18

GPIO_PIN19

GPIO_PIN20

GPIO_PIN21

GPIO_PIN22

GPIO_PIN23

GPIO_PIN24

GPIO_PIN25

GPIO_PIN26

GPIO_PIN27

GPIO_PIN28

GPIO_PIN29

GPIO_PIN30

GPIO_PIN31

GPIO_OUT_HIGH(x)

GPIO_OUT_LOW(x)

Type Definitions

typedef enum _drv_gpio_intr_cond_e drv_gpio_intr_cond_e: gpio interrupt condition

typedef void (*pfunc_gpio_cb_t)(uint32_t gpio_pin_id): GPIO interrupt callback.

Enumerations

enum _drv_gpio_intr_cond_e

gpio interrupt condition

Values:

enumerator DRV_GPIO_INTR_LOW_LVL: generate interrupt if gpio is low

enumerator DRV_GPIO_INTR_HIGH_LVL: generate interrupt if gpio is high

enumerator DRV_GPIO_INTR_POS_EDGE: generate interrupt if gpio is on the rising edage

enumerator DRV_GPIO_INTR_NEG_EDGE: generate interrupt if gpio is on the falling edage

enumerator DRV_GPIO_INTR_TYPE_MAX: not used