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/*
* Copyright (c) 2005 Chris Kuethe <chris.kuethe@gmail.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _GPSFLASH_H_
#define _GPSFLASH_H_
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <netinet/in.h> /* for htonl() under Linux */
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
/*
* I can't imagine a GPS firmware less than 256KB / 2Mbit. The latest build
* that I have (2.3.2) is 296KB. So 256KB is probably low enough to allow
* really old firmwares to load.
*
* As far as I know, USB receivers have 512KB / 4Mbit of flash. Application
* note APNT00016 (Alternate Flash Programming Algorithms) says that the S2AR
* reference design supports 4, 8 or 16 Mbit flash memories, but with current
* firmwares not even using 60% of a 4Mbit flash on a commercial receiver,
* I'm not going to stress over loading huge images. The define below is
* 524288 bytes, but that blows up nearly 3 times as S-records.
* 928K srec -> 296K binary
*/
#define MIN_FW_SIZE 262144
#define MAX_FW_SIZE 1572864
/* a reasonable loader is probably 15K - 20K */
#define MIN_LD_SIZE 15440
#define MAX_LD_SIZE 20480
/* From the SiRF protocol manual... may as well be consistent */
#define PROTO_SIRF 0
#define PROTO_NMEA 1
#define BOOST_38400 0
#define BOOST_57600 1
#define BOOST_115200 2
/* block size when writing to the serial port. related to FIFO size */
#define WRBLK 128
/* Prototypes */
/* gpsflash.c */
int main(int, char **);
void usage(void);
/* utils.c */
int serialConfig(int, struct termios *, int);
int serialSpeed(int, struct termios *, int);
int sirfSetProto(int, struct termios *, int, int);
int sirfSendUpdateCmd(int);
int sirfSendLoader(int, struct termios *, char *, int);
int sirfSendFirmware(int, char *, int);
int sirfWrite(int, unsigned char *);
unsigned char nmea_checksum(unsigned char *);
#endif /* _GPSFLASH_H_ */
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