osd-contiki/cpu/rl78/adf7023/adf7023-contiki.c

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/*
* Copyright (c) 2014, Analog Devices, Inc.
* 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 copyright holder 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 COPYRIGHT HOLDERS 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
* COPYRIGHT HOLDER 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.
*/
/**
* \author Ian Martin <martini@redwirellc.com>
*/
#include <string.h> /* for memcpy(). */
#include "radio.h"
#include "ADF7023.h"
#include "adf7023-contiki.h"
#include "contiki.h" /* for LED definitions. */
#define ADF7023_MAX_PACKET_SIZE 255
static unsigned char tx_buf[ADF7023_MAX_PACKET_SIZE];
static unsigned char rx_buf[ADF7023_MAX_PACKET_SIZE];
const struct radio_driver adf7023_driver = {
.init = adf7023_init,
/** Prepare the radio with a packet to be sent. */
.prepare = adf7023_prepare,
/** Send the packet that has previously been prepared. */
.transmit = adf7023_transmit,
/** Prepare & transmit a packet. */
.send = adf7023_send,
/** Read a received packet into a buffer. */
.read = adf7023_read,
/** Perform a Clear-Channel Assessment (CCA) to find out if there is
a packet in the air or not. */
.channel_clear = adf7023_channel_clear,
/** Check if the radio driver is currently receiving a packet */
.receiving_packet = adf7023_receiving_packet,
/** Check if the radio driver has just received a packet */
.pending_packet = adf7023_pending_packet,
/** Turn the radio on. */
.on = adf7023_on,
/** Turn the radio off. */
.off = adf7023_off,
};
int
adf7023_init(void)
{
ADF7023_Init();
return 1;
}
int
adf7023_prepare(const void *payload, unsigned short payload_len)
{
/* Prepare the radio with a packet to be sent. */
memcpy(tx_buf, payload, (payload_len <= sizeof(tx_buf)) ? payload_len : sizeof(tx_buf));
return 0;
}
int
adf7023_transmit(unsigned short transmit_len)
{
/* Send the packet that has previously been prepared. */
RADIO_TX_LED = 1;
ADF7023_TransmitPacket(tx_buf, transmit_len);
RADIO_TX_LED = 0;
/* TODO: Error conditions (RADIO_TX_ERR, RADIO_TX_COLLISION, RADIO_TX_NOACK)? */
return RADIO_TX_OK;
}
int
adf7023_send(const void *payload, unsigned short payload_len)
{
/* Prepare & transmit a packet. */
RADIO_TX_LED = 1;
ADF7023_TransmitPacket((void *)payload, payload_len);
RADIO_TX_LED = 0;
/* TODO: Error conditions (RADIO_TX_ERR, RADIO_TX_COLLISION, RADIO_TX_NOACK)? */
return RADIO_TX_OK;
}
int
adf7023_read(void *buf, unsigned short buf_len)
{
unsigned char num_bytes;
/* Read a received packet into a buffer. */
RADIO_RX_LED = 1;
ADF7023_ReceivePacket(rx_buf, &num_bytes);
RADIO_RX_LED = 0;
memcpy(buf, rx_buf, (num_bytes <= buf_len) ? num_bytes : buf_len);
return num_bytes;
}
int
adf7023_channel_clear(void)
{
/* Perform a Clear-Channel Assessment (CCA) to find out if there is a packet in the air or not. */
return 1;
}
int
adf7023_receiving_packet(void)
{
/* Check if the radio driver is currently receiving a packet. */
return 0;
}
int
adf7023_pending_packet(void)
{
/* Check if the radio driver has just received a packet. */
return ADF7023_ReceivePacketAvailable();
}
int
adf7023_on(void)
{
/* Turn the radio on. */
return 1;
}
int
adf7023_off(void)
{
/* Turn the radio off. */
return 0;
}