nes-proj/platform/remote/dev/antenna-sw.c
Antonio Lignan 330e450ba4 Zolertia Re-Mote platform ported to Contiki, developed whitin RERUM FP7 European project (grant #609094).
The port was done jointly by Zolertia and George Oikonomou (University of Bristol).
2015-05-29 22:04:43 +02:00

92 lines
3.4 KiB
C

/*
* 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;
}
/*---------------------------------------------------------------------------*/
/**
* @}
* @}
*/