GPIO_EX

gpio extended functions More...

Functions
void	gpio_direct_write (gpio_t *obj, BOOL value)
	Sets value to the selected output port pin. More...
void	gpio_pull_ctrl (gpio_t *obj, PinMode pull_type)
	Sets pull type to the selected pin. More...
void	gpio_deinit (gpio_t *obj)
	Deinitializes the GPIO device, include mode/direction/pull control registers. More...
void	gpio_change_dir (gpio_t *obj, PinDirection direction)
	Set GPIO direction. More...

Detailed Description

gpio extended functions

Function Documentation

void gpio_change_dir	(	gpio_t *	obj,
		PinDirection	direction
	)

Set GPIO direction.

Parameters

obj	gpio object define in application software.
direction	this parameter can be one of the following values: PIN_INPUT: this pin is input PIN_OUTPUT: this pin is output

Return values

none

void gpio_deinit

(

gpio_t *

obj

)

Deinitializes the GPIO device, include mode/direction/pull control registers.

Parameters

obj	gpio object define in application software.

Return values

none

void gpio_direct_write	(	gpio_t *	obj,
		BOOL	value
	)

Sets value to the selected output port pin.

Parameters

obj	gpio object define in application software.
value	specifies the value to be written to the selected pin This parameter can be one of the following values: 0: Pin state set to low 1: Pin state set to high

Return values

none

void gpio_pull_ctrl	(	gpio_t *	obj,
		PinMode	pull_type
	)

Sets pull type to the selected pin.

Parameters

obj	gpio object define in application software.
pull_type	this parameter can be one of the following values: PullNone: HighZ, user can input high or low use this pin OpenDrain(is OpenDrain output): no pull + OUT + GPIO[gpio_bit] = 0 PullDown: pull down PullUp: pull up

Return values

none