nes-proj/cpu/mc1322x/lib/include/packet.h

68 lines
2.5 KiB
C
Raw Normal View History

/*
* Copyright (c) 2010, Mariano Alvira <mar@devl.org> and other contributors
* to the MC1322x project (http://mc1322x.devl.org)
* 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.
*
* This file is part of libmc1322x: see http://mc1322x.devl.org
* for details.
*
*
*/
2010-03-05 11:59:51 +00:00
#ifndef PACKET_H
#define PACKET_H
2010-03-07 23:48:47 +00:00
/* does not include 2 byte FCS checksum */
#ifndef MAX_PAYLOAD_SIZE
#define MAX_PAYLOAD_SIZE 125
2010-03-05 11:59:51 +00:00
#endif
#define PACKET_STATS 0
2010-03-05 11:59:51 +00:00
struct packet {
2010-03-07 23:48:47 +00:00
uint8_t length; /* does not include FCS checksum */
2010-03-05 11:59:51 +00:00
volatile struct packet * left;
volatile struct packet * right;
/* offset into data for first byte of the packet payload */
/* On TX this should be 0 */
/* On RX this should be 1 since the maca puts the length as the first byte*/
uint8_t offset;
2010-08-18 18:55:50 +00:00
uint8_t lqi;
2011-02-12 19:01:54 +00:00
uint8_t status;
uint32_t rx_time;
#if PACKET_STATS
uint8_t seen;
uint8_t post_tx;
uint8_t get_free;
uint8_t rxd;
#endif
2010-03-07 23:48:47 +00:00
uint8_t data[MAX_PAYLOAD_SIZE+2+1]; /* +2 for FCS; + 1 since maca returns the length as the first byte */
2010-03-05 11:59:51 +00:00
};
typedef struct packet packet_t;
#endif