osd-contiki/platform/pico-rv32-icoboard/cc2520-arch.c

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/*
* Copyright (c) 2011, Swedish Institute of Computer Science
* 2016, Dr. Ralf Schlatterbeck Open Source Consulting
* 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.
*/
#include "contiki.h"
#include "contiki-net.h"
#include "icosoc.h"
#include "cc2520-arch.h"
#include "dev/cc2520/cc2520.h"
#ifdef CC2520_CONF_SFD_TIMESTAMPS
#define CONF_SFD_TIMESTAMPS CC2520_CONF_SFD_TIMESTAMPS
#endif /* CC2520_CONF_SFD_TIMESTAMPS */
#ifndef CONF_SFD_TIMESTAMPS
#define CONF_SFD_TIMESTAMPS 0
#endif /* CONF_SFD_TIMESTAMPS */
#ifdef CONF_SFD_TIMESTAMPS
#include "cc2520-arch-sfd.h"
#endif
/*---------------------------------------------------------------------------*/
void icosoc_cc2520_fifop_irq (void)
{
ENERGEST_ON(ENERGEST_TYPE_IRQ);
/* See Errata 1.2.2 */
if (!CC2520_FIFOP_IS_1) {
return;
}
if (!CC2520_FIFOP_IS_1) {
return;
}
cc2520_interrupt();
ENERGEST_OFF(ENERGEST_TYPE_IRQ);
}
/*---------------------------------------------------------------------------*/
void
cc2520_arch_init(void)
{
// All inputs except for RESET pin which is an output
icosoc_cc2520_io_dir (BV(CC2520_RESET_SHIFT));
// Prescaler set to F_CPU / 4MHz will result in <= 4MHz
// rate, chip should perform up to 8MHz)
icosoc_cc2520_spi_prescale (F_CPU / 4000000);
// SPI mode cpol, cpha
icosoc_cc2520_spi_mode (0, 0);
#if CONF_SFD_TIMESTAMPS
cc2520_arch_sfd_init();
#endif
CC2520_SPI_DISABLE(); /* Unselect radio. */
}
/*---------------------------------------------------------------------------*/