ymodem.h

linux下Y-Modem协议的实现源代码。 receive.c:数据接收代码 send.c:数据发送代码 ymodem.c:主文件

#ifndef YMODEM_H
#define YMODEM_H

//#define WINYWY


#include 	 <stdio.h>
#include     <stdlib.h>     /*标准函数库定义*/
#include     <sys/types.h>  
#include     <sys/stat.h>   
#include     <fcntl.h>      /*文件控制定义*/
#include     <string.h>
#include     <errno.h>      /*错误号定义*/
#include     <math.h>

#ifdef WINYWY
#include <io.h>
#else
#include     <unistd.h>     /*Unix 标准函数定义*/
#include     <termios.h>    /*PPSIX 终端控制定义*/
#endif
//#define DEBUG

#define SOH		0x1	/* ^A */
#define STX		0x2	/* ^B */ 
#define ETX		0x3	/* ^C */
#define EOT		0x4	/* ^D */
#define ENQ		0x5	/* ^E */
#define ACK		0x6	/* ^F */
#define BEL		0x7	/* ^G */
#define DLE		0x10	/* ^P */
#define XON		0x11	/* ^Q */
#define XOFF	0x13	/* ^S */
#define NAK	 	0x15	/* ^U */
#define CAN		0x18	/* ^X */

#define CPMEOF	0x1A	/* ^Z */


#define HEAD_OK             0     /*format,blknum and crc check all OK*/
#define COM_TRANS_CONTI	    1
#define FORMAT_UNSUPPORT   0xFFFF0001
#define CRC_ERR            0xFFFF0002
#define CHECKSUM_ERR       0xFFFF0003
#define BLK_UNVILID        0xFFFF0004
#define BLK_REPEAT         0xFFFF0005
#define BLK_LOSS           0xFFFF0006


#define FILE_OPEN_ERR      0xFFFF0007
#define NO_MORE_FILE       0xFFFF0008
#define FILE_READ_ERR      0xFFFF0009

#define FILE_UNVILID       0xFFFF000A
#define MALLOC_ERROR       0xFFFF000B

#define COM_OPEN_ERR       0xFFFF000C
#define COM_SET_ERR        0xFFFF000D
#define COM_READ_ERR       0xFFFF000E
#define COM_WRITE_ERR      0xFFFF000F

#define SET_EV_MASK_ERR    0xFFFF0010
#define GET_EV_MASK_ERR    0xFFFF0011
#define CMD_UNVILID        0xFFFF0012
#define COM_TRANS_REPEAT   0xFFFF0013


#define FIRST_ACK            1
#define CAN_IND              2
#define ALL_NEED_OFFSET      3


#ifdef WINYWY
#define _O_NONBLOCK          0
#else
#define _O_NONBLOCK          O_NONBLOCK
#define _O_RDWR              O_RDWR
#define _O_RDONLY            O_RDONLY
#define _O_BINARY            0
#define _open(a,b)           open(a,b)
#define _read(a,b,c)         read(a,b,c)
#define _write(a,b,c)        write(a,b,c)
#define _close(a)            close(a)
#define _lseek(a,b,c)        lseek(a,b,c)
#endif

extern char CrcFlag;
extern int fd;
extern unsigned int FileLen;
extern unsigned int FileLenBkup;

void delay(int clock_count);
int set_com_common(char* device); //common for receive and send
int control_recv(char* device);
int control_send(char* file_name,char* device);

static unsigned short crctab[256] = {
    0x0000,  0x1021,  0x2042,  0x3063,  0x4084,  0x50a5,  0x60c6,  0x70e7,
    0x8108,  0x9129,  0xa14a,  0xb16b,  0xc18c,  0xd1ad,  0xe1ce,  0xf1ef,
    0x1231,  0x0210,  0x3273,  0x2252,  0x52b5,  0x4294,  0x72f7,  0x62d6,
    0x9339,  0x8318,  0xb37b,  0xa35a,  0xd3bd,  0xc39c,  0xf3ff,  0xe3de,
    0x2462,  0x3443,  0x0420,  0x1401,  0x64e6,  0x74c7,  0x44a4,  0x5485,
    0xa56a,  0xb54b,  0x8528,  0x9509,  0xe5ee,  0xf5cf,  0xc5ac,  0xd58d,
    0x3653,  0x2672,  0x1611,  0x0630,  0x76d7,  0x66f6,  0x5695,  0x46b4,
    0xb75b,  0xa77a,  0x9719,  0x8738,  0xf7df,  0xe7fe,  0xd79d,  0xc7bc,
    0x48c4,  0x58e5,  0x6886,  0x78a7,  0x0840,  0x1861,  0x2802,  0x3823,
    0xc9cc,  0xd9ed,  0xe98e,  0xf9af,  0x8948,  0x9969,  0xa90a,  0xb92b,
    0x5af5,  0x4ad4,  0x7ab7,  0x6a96,  0x1a71,  0x0a50,  0x3a33,  0x2a12,
    0xdbfd,  0xcbdc,  0xfbbf,  0xeb9e,  0x9b79,  0x8b58,  0xbb3b,  0xab1a,
    0x6ca6,  0x7c87,  0x4ce4,  0x5cc5,  0x2c22,  0x3c03,  0x0c60,  0x1c41,
    0xedae,  0xfd8f,  0xcdec,  0xddcd,  0xad2a,  0xbd0b,  0x8d68,  0x9d49,
    0x7e97,  0x6eb6,  0x5ed5,  0x4ef4,  0x3e13,  0x2e32,  0x1e51,  0x0e70,
    0xff9f,  0xefbe,  0xdfdd,  0xcffc,  0xbf1b,  0xaf3a,  0x9f59,  0x8f78,
    0x9188,  0x81a9,  0xb1ca,  0xa1eb,  0xd10c,  0xc12d,  0xf14e,  0xe16f,
    0x1080,  0x00a1,  0x30c2,  0x20e3,  0x5004,  0x4025,  0x7046,  0x6067,
    0x83b9,  0x9398,  0xa3fb,  0xb3da,  0xc33d,  0xd31c,  0xe37f,  0xf35e,
    0x02b1,  0x1290,  0x22f3,  0x32d2,  0x4235,  0x5214,  0x6277,  0x7256,
    0xb5ea,  0xa5cb,  0x95a8,  0x8589,  0xf56e,  0xe54f,  0xd52c,  0xc50d,
    0x34e2,  0x24c3,  0x14a0,  0x0481,  0x7466,  0x6447,  0x5424,  0x4405,
    0xa7db,  0xb7fa,  0x8799,  0x97b8,  0xe75f,  0xf77e,  0xc71d,  0xd73c,
    0x26d3,  0x36f2,  0x0691,  0x16b0,  0x6657,  0x7676,  0x4615,  0x5634,
    0xd94c,  0xc96d,  0xf90e,  0xe92f,  0x99c8,  0x89e9,  0xb98a,  0xa9ab,
    0x5844,  0x4865,  0x7806,  0x6827,  0x18c0,  0x08e1,  0x3882,  0x28a3,
    0xcb7d,  0xdb5c,  0xeb3f,  0xfb1e,  0x8bf9,  0x9bd8,  0xabbb,  0xbb9a,
    0x4a75,  0x5a54,  0x6a37,  0x7a16,  0x0af1,  0x1ad0,  0x2ab3,  0x3a92,
    0xfd2e,  0xed0f,  0xdd6c,  0xcd4d,  0xbdaa,  0xad8b,  0x9de8,  0x8dc9,
    0x7c26,  0x6c07,  0x5c64,  0x4c45,  0x3ca2,  0x2c83,  0x1ce0,  0x0cc1,
    0xef1f,  0xff3e,  0xcf5d,  0xdf7c,  0xaf9b,  0xbfba,  0x8fd9,  0x9ff8,
    0x6e17,  0x7e36,  0x4e55,  0x5e74,  0x2e93,  0x3eb2,  0x0ed1,  0x1ef0
};

/*
 * updcrc macro derived from article Copyright (C) 1986 Stephen Satchell. 
 *  NOTE: First srgument must be in range 0 to 255.
 *        Second argument is referenced twice.
 * 
 * Programmers may incorporate any or all code into their programs, 
 * giving proper credit within the source. Publication of the 
 * source routines is permitted so long as proper credit is given 
 * to Stephen Satchell, Satchell Evaluations and Chuck Forsberg, 
 * Omen Technology.
 */

#define updcrc(cp, crc) ( crctab[((crc >> 8) & 255)] ^ (crc << 8) ^ cp)

#endif