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/**
* @file lpc-gpio.h
*
* @ingroup lpc176x
*
* @brief API of the GPIO driver for the lpc176x bsp in RTEMS.
*/
/*
* Copyright (c) 2014 Taller Technologies.
*
* @author Boretto Martin (martin.boretto@tallertechnologies.com)
* @author Diaz Marcos (marcos.diaz@tallertechnologies.com)
* @author Lenarduzzi Federico (federico.lenarduzzi@tallertechnologies.com)
* @author Daniel Chicco (daniel.chicco@tallertechnologies.com)
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifndef LIBBSP_ARM_LPC176X_GPIO_H
#define LIBBSP_ARM_LPC176X_GPIO_H
#include <bsp/lpc176x.h>
#include <bsp/gpio-defs.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/**
* @brief Configures the pin as input or output GPIO.
*
* @param pin The pin to configure
* @param dir Input or output.
*/
rtems_status_code lpc176x_gpio_config(
lpc176x_pin_number pin,
lpc176x_gpio_direction dir
);
/**
* @brief Configures the pin as input, enables interrupt for an
* edge/s and sets isrfunct as the function to call when that
* interrupt occurs.
*
* @param pin The pin to configure.
* @param edge Which edge or edges will activate the interrupt.
* @param isrfunct The function that is called when the interrupt occurs.
* @return RTEMS_SUCCESSFULL if the configurations was success.
*/
rtems_status_code lpc176x_gpio_config_input_with_interrupt(
lpc176x_pin_number pin,
lpc176x_gpio_interrupt edge,
lpc176x_gpio_interrupt_function isrfunct
);
/**
* @brief Sets the output pin to 1.
*
* @param pin The pin to set
*/
rtems_status_code lpc176x_gpio_set_pin( lpc176x_pin_number pin );
/**
* @brief Sets the output pin to 0.
*
* @param pin The pin to set
*/
rtems_status_code lpc176x_gpio_clear_pin( lpc176x_pin_number pin );
/**
* @brief Sets the output pin to 0 or 1 according to value.
*
* @param pin The pin to set
* @param value the value to set.
*/
rtems_status_code lpc176x_gpio_write_pin(
lpc176x_pin_number pin,
bool value
);
/**
* @brief Returns the value at the given input pin.
*
* @param pin The pin where to read the value.
* @param pin_value TRUE if the pin value was getted successfuly.
* @return RTEMS_SUCCESSFUL if the pin value was getted successfuly.
*/
rtems_status_code lpc176x_gpio_get_pin_value(
lpc176x_pin_number pin,
bool *pin_value
);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* LIBBSP_ARM_LPC176X_GPIO_H */
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