/* -------------------------------------------------------------------------- 
 * Copyright (c) 2013-2016 ARM Limited. All rights reserved.
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Licensed under the Apache License, Version 2.0 (the License); you may
 * not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an AS IS BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * $Date:        02. March 2016
 * $Revision:    V1.0
 *
 * Project:      GPIO Driver Definitions for NXP LPC18xx
 * -------------------------------------------------------------------------- */

#ifndef __GPIO_LPC18XX_H
#define __GPIO_LPC18XX_H

#include <stdint.h>

// GPIO identifier
typedef struct _GPIO_ID {
  uint8_t       port;
  uint8_t       num;
} GPIO_ID;

// GPIO Direction
#define GPIO_DIR_INPUT     (0)
#define GPIO_DIR_OUTPUT    (1)


/**
  \fn          void GPIO_PortClock (uint32_t clock)
  \brief       Port Clock Control
  \param[in]   clock  Enable or disable clock
*/
extern void GPIO_PortClock (uint32_t clock);

/**
  \fn          void GPIO_SetDir (uint32_t port_num,
                                 uint32_t pin_num,
                                 uint32_t dir)
  \brief       Configure GPIO pin direction
  \param[in]   port_num   GPIO number (0..7)
  \param[in]   pin_num    Port pin number
  \param[in]   dir        GPIO_DIR_INPUT, GPIO_DIR_OUTPUT
*/
extern void GPIO_SetDir (uint32_t port_num, uint32_t pin_num, uint32_t dir);

/**
  \fn          void GPIO_PinWrite (uint32_t port_num,
                                   uint32_t pin_num,
                                   uint32_t val)
  \brief       Write port pin
  \param[in]   port_num   GPIO number (0..7)
  \param[in]   pin_num    Port pin number
  \param[in]   val        Port pin value (0 or 1)
*/
extern void GPIO_PinWrite (uint32_t port_num,
                           uint32_t pin_num,
                           uint32_t val);

/**
  \fn          uint32_t  GPIO_PinRead (uint32_t port_num, uint32_t pin_num)
  \brief       Read port pin
  \param[in]   port_num   GPIO number (0..7)
  \param[in]   pin_num    Port pin number
  \return      pin value (0 or 1)
*/
extern uint32_t GPIO_PinRead (uint32_t port_num, uint32_t pin_num);

/**
  \fn          void GPIO_PortWrite (uint32_t port_num,
                                    uint32_t mask,
                                    uint32_t val)
  \brief       Write port pins
  \param[in]   port_num   GPIO number (0..7)
  \param[in]   mask       Selected pins
  \param[in]   val        Pin values
*/
extern void GPIO_PortWrite (uint32_t port_num, uint32_t mask, uint32_t val);

/**
  \fn          uint32_t  GPIO_PortRead (uint32_t port_num)
  \brief       Read port pins
  \param[in]   port_num   GPIO number (0..7)
  \return      port pin inputs
*/
extern uint32_t GPIO_PortRead (uint32_t port_num);

#endif /* __GPIO_LPC18XX_H */