/*
 * Copyright (c) 2015, Zolertia
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the Institute nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 */
/*---------------------------------------------------------------------------*/
/**
 * \addtogroup remote-antenna
 * @{
 *
 * Driver for the Re-Mote 2.4Ghz antenna switch, to enable either the internal
 * ceramic antenna or an external one connected to the uFL connector
 * @{
 *
 * \file
 * Driver for the Re-Mote 2.4Ghz antenna switch
 */
/*---------------------------------------------------------------------------*/
#include "contiki.h"
#include "dev/gpio.h"
#include "antenna-sw.h"

#include <stdint.h>
/*---------------------------------------------------------------------------*/
#define ANTENNA_2_4GHZ_SW_PORT_BASE  GPIO_PORT_TO_BASE(ANTENNA_2_4GHZ_SW_PORT)
#define ANTENNA_2_4GHZ_SW_PIN_MASK   GPIO_PIN_MASK(ANTENNA_2_4GHZ_SW_PIN)
/*---------------------------------------------------------------------------*/
static uint8_t initialized = 0;
/*---------------------------------------------------------------------------*/
void
antenna_sw_config(void)
{
  /* Software controlled */
  GPIO_SOFTWARE_CONTROL(ANTENNA_2_4GHZ_SW_PORT_BASE,
                        ANTENNA_2_4GHZ_SW_PIN_MASK);

  /* Set pin to output */
  GPIO_SET_OUTPUT(ANTENNA_2_4GHZ_SW_PORT_BASE, ANTENNA_2_4GHZ_SW_PIN_MASK);

  /* Set the antenna selector to a default position */
  GPIO_CLR_PIN(ANTENNA_2_4GHZ_SW_PORT_BASE, ANTENNA_2_4GHZ_SW_PIN_MASK);

  initialized = 1;
}
/*---------------------------------------------------------------------------*/
int
antenna_sw_select(uint8_t val)
{
  if(!initialized) {
    return ANTENNA_SW_SELECT_ERROR;
  }

  if(val != ANTENNA_SW_SELECT_INTERNAL && val != ANTENNA_SW_SELECT_EXTERNAL) {
    return ANTENNA_SW_SELECT_ERROR;
  }

  /* Set the antenna selector */
  GPIO_WRITE_PIN(ANTENNA_2_4GHZ_SW_PORT_BASE, ANTENNA_2_4GHZ_SW_PIN_MASK, val);

  return val;
}
/*---------------------------------------------------------------------------*/

/**
 * @}
 * @}
 */