lpc-gpio.c File Reference

GPIO library for the lpc176x bsp. More...

#include <assert.h>
#include <bsp/irq.h>
#include <bsp/io.h>
#include <bsp/lpc-gpio.h>
#include <rtems/status-checks.h>

Functions
rtems_status_code	lpc176x_gpio_config (const lpc176x_pin_number pin, const lpc176x_gpio_direction dir)
	Configures the pin as input or output GPIO.
rtems_status_code	lpc176x_gpio_config_input_with_interrupt (const lpc176x_pin_number pin, const lpc176x_gpio_interrupt edge, const lpc176x_gpio_interrupt_function isr_funct)
	Configures the pin as input, enables interrupt for an edge/s and sets isrfunct as the function to call when that interrupt occurs.
rtems_status_code	lpc176x_gpio_set_pin (const lpc176x_pin_number pin)
	Sets the output pin to 1.
rtems_status_code	lpc176x_gpio_clear_pin (const lpc176x_pin_number pin)
	Sets the output pin to 0.
rtems_status_code	lpc176x_gpio_write_pin (const lpc176x_pin_number pin, const bool value)
	Sets the output pin to 0 or 1 according to value.
rtems_status_code	lpc176x_gpio_get_pin_value (const lpc176x_pin_number pin, bool *pin_value)
	Returns the value at the given input pin.

Detailed Description

GPIO library for the lpc176x bsp.

Function Documentation

lpc176x_gpio_clear_pin()

rtems_status_code lpc176x_gpio_clear_pin

(

lpc176x_pin_number

pin

)

Sets the output pin to 0.

Parameters

pin	The pin to set

lpc176x_gpio_config()

rtems_status_code lpc176x_gpio_config	(	lpc176x_pin_number	pin,
		lpc176x_gpio_direction	dir
	)

Configures the pin as input or output GPIO.

Parameters

pin	The pin to configure
dir	Input or output.

lpc176x_gpio_config_input_with_interrupt()

rtems_status_code lpc176x_gpio_config_input_with_interrupt	(	lpc176x_pin_number	pin,
		lpc176x_gpio_interrupt	edge,
		lpc176x_gpio_interrupt_function	isrfunct
	)

Configures the pin as input, enables interrupt for an edge/s and sets isrfunct as the function to call when that interrupt occurs.

Parameters

pin	The pin to configure.
edge	Which edge or edges will activate the interrupt.
isrfunct	The function that is called when the interrupt occurs.

Returns

RTEMS_SUCCESSFULL if the configurations was success.

lpc176x_gpio_get_pin_value()

rtems_status_code lpc176x_gpio_get_pin_value ( lpc176x_pin_number  pin, bool *  pin_value  )

inline

Returns the value at the given input pin.

Parameters

pin	The pin where to read the value.
pin_value	TRUE if the pin value was getted successfuly.

Returns

RTEMS_SUCCESSFUL if the pin value was getted successfuly.

lpc176x_gpio_set_pin()

rtems_status_code lpc176x_gpio_set_pin

(

lpc176x_pin_number

pin

)

Sets the output pin to 1.

Parameters

pin	The pin to set

lpc176x_gpio_write_pin()

rtems_status_code lpc176x_gpio_write_pin	(	lpc176x_pin_number	pin,
		bool	value
	)

Sets the output pin to 0 or 1 according to value.

Parameters

pin	The pin to set
value	the value to set.