GPIO Driver APIs

GPIO APIs. More...

Macros
#define	GPIO_OUTPUT_SET(gpio_no, bit_value)   gpio_output_conf(bit_value<<gpio_no, ((~bit_value)&0x01)<<gpio_no, 1<<gpio_no, 0)
	Set GPIO pin output level. More...
#define	GPIO_OUTPUT(gpio_bits, bit_value)
	Set GPIO pin output level. More...
#define	GPIO_DIS_OUTPUT(gpio_no)    gpio_output_conf(0, 0, 0, 1<<gpio_no)
	Disable GPIO pin output. More...
#define	GPIO_AS_INPUT(gpio_bits)    gpio_output_conf(0, 0, 0, gpio_bits)
	Enable GPIO pin intput. More...
#define	GPIO_AS_OUTPUT(gpio_bits)    gpio_output_conf(0, 0, gpio_bits, 0)
	Enable GPIO pin output. More...
#define	GPIO_INPUT_GET(gpio_no)    ((gpio_input_get()>>gpio_no)&BIT0)
	Sample the level of GPIO input. More...

Functions
void	gpio16_output_conf (void)
	Enable GPIO16 output. More...
void	gpio16_output_set (uint8 value)
	Set GPIO16 output level. More...
void	gpio16_input_conf (void)
	Enable GPIO pin intput. More...
uint8	gpio16_input_get (void)
	Sample the value of GPIO16 input. More...
void	gpio_output_conf (uint32 set_mask, uint32 clear_mask, uint32 enable_mask, uint32 disable_mask)
	Configure Gpio pins out or input. More...
void	gpio_intr_handler_register (void *fn, void *arg)
	Register an application-specific interrupt handler for GPIO pin interrupts. More...
void	gpio_pin_wakeup_enable (uint32 i, GPIO_INT_TYPE intr_state)
	Configure GPIO wake up to light sleep,Only level way is effective. More...
void	gpio_pin_wakeup_disable ()
	Disable GPIO wake up to light sleep. More...
void	gpio_pin_intr_state_set (uint32 i, GPIO_INT_TYPE intr_state)
	Config interrupt types of GPIO pin. More...
uint32	gpio_input_get (void)
	Sample the value of GPIO input pins and returns a bitmask. More...

Detailed Description

GPIO APIs.

Macro Definition Documentation

#define GPIO_AS_INPUT

(

gpio_bits

)

gpio_output_conf(0, 0, 0, gpio_bits)

Enable GPIO pin intput.

Parameters

gpio_bits

: The GPIO bit number.

Returns

null

#define GPIO_AS_OUTPUT

(

gpio_bits

)

gpio_output_conf(0, 0, gpio_bits, 0)

Enable GPIO pin output.

Parameters

gpio_bits

: The GPIO bit number.

Returns

null

#define GPIO_DIS_OUTPUT

(

gpio_no

)

gpio_output_conf(0, 0, 0, 1<<gpio_no)

Disable GPIO pin output.

Parameters

gpio_no

: The GPIO sequence number.

Returns

null

#define GPIO_INPUT_GET

(

gpio_no

)

((gpio_input_get()>>gpio_no)&BIT0)

Sample the level of GPIO input.

Parameters

gpio_no

: The GPIO sequence number.

Returns

the level of GPIO input

#define GPIO_OUTPUT	(		gpio_bits,
			bit_value
	)

Value:

if(bit_value) gpio_output_conf(gpio_bits, 0, gpio_bits, 0);\
    else gpio_output_conf(0, gpio_bits, gpio_bits, 0)

Set GPIO pin output level.

Parameters

gpio_bits	: The GPIO bit number.
bit_value	: GPIO pin output level.

Returns

null

#define GPIO_OUTPUT_SET	(		gpio_no,
			bit_value
	)		gpio_output_conf(bit_value<<gpio_no, ((~bit_value)&0x01)<<gpio_no, 1<<gpio_no, 0)

Set GPIO pin output level.

Parameters

gpio_no	: The GPIO sequence number.
bit_value	: GPIO pin output level.

Returns

null

Function Documentation

void gpio16_input_conf

(

void

)

Enable GPIO pin intput.

Parameters

null

Returns

null

uint8 gpio16_input_get

(

void

)

Sample the value of GPIO16 input.

Parameters

null

Returns

the level of GPIO16 input.

void gpio16_output_conf

(

void

)

Enable GPIO16 output.

Parameters

null

Returns

null

void gpio16_output_set

(

uint8

value

)

Set GPIO16 output level.

Parameters

uint8

value : GPIO16 output level.

Returns

null

uint32 gpio_input_get

(

void

)

Sample the value of GPIO input pins and returns a bitmask.

Parameters

null

Returns

bitmask of GPIO pins input

void gpio_intr_handler_register	(	void *	fn,
		void *	arg
	)

Register an application-specific interrupt handler for GPIO pin interrupts.

Parameters

void	*fn:interrupt handler for GPIO pin interrupts.
void	*arg:interrupt handler's arg

Returns

null

void gpio_output_conf	(	uint32	set_mask,
		uint32	clear_mask,
		uint32	enable_mask,
		uint32	disable_mask
	)

Configure Gpio pins out or input.

Parameters

uint32	set_mask : Set the output for the high bit, the corresponding bit is 1, the output of high, the corresponding bit is 0, do not change the state.
uint32	set_mask : Set the output for the high bit, the corresponding bit is 1, the output of low, the corresponding bit is 0, do not change the state.
uint32	enable_mask : Enable Output
uint32	disable_mask : Enable Input

Returns

null

void gpio_pin_intr_state_set	(	uint32	i,
		GPIO_INT_TYPE	intr_state
	)

Config interrupt types of GPIO pin.

Parameters

uint32	i : The GPIO sequence number.
GPIO_INT_TYPE	intr_state : GPIO interrupt types.

Returns

null

void gpio_pin_wakeup_disable

(

)

Disable GPIO wake up to light sleep.

Parameters

null

Returns

null

void gpio_pin_wakeup_enable	(	uint32	i,
		GPIO_INT_TYPE	intr_state
	)

Configure GPIO wake up to light sleep,Only level way is effective.

Parameters

uint32	i : Gpio sequence number
GPIO_INT_TYPE	intr_state : the level of wake up to light sleep

Returns

null