.h 文件
/*****************************************************************************/
/*
* xmodem
*/
/*************************************************************************************
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
cwmp *导丝男士
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*************************************************************************************/
#include <sys/stat.h>
#include <errno.h>
#include <time.h>
#include<stdio.h>/*printf*/
#include<fcntl.h>/*open*/
#include<string.h>/*bzero*/
#include<stdlib.h>/*exit*/
#include<sys/times.h>/*times*/
#include<sys/types.h>/*pid_t*/
#include<termios.h>/*termios,tcgetattr(),tcsetattr()*/
#include<unistd.h>
#include<sys/ioctl.h>/*ioctl*/
#include<sys/wait.h>
#include<string.h>/*bzero*/
/*
Xmodem Frame form: <SOH><blk #><255-blk #><--128 data bytes--><CRC hi><CRC lo>
*/
#define XMODEM_SOH 0x01
#define XMODEM_STX 0x02
#define XMODEM_EOT 0x04
离合器盘#define XMODEM_ACK 0x06
#define XMODEM_NAK 0x15
#define XMODEM_CAN 0x18
#define XMODEM_CRC_CHR 'C'
#define XMODEM_CRC_SIZE 2 /* Crc_High Byte + Crc_Low Byte */
#define XMODEM_FRAME_ID_SIZE 2 /* Frame_Id + 255-Frame_Id */
#define XMODEM_DATA_SIZE_SOH 128 /* for Xmodem protocol */
#define XMODEM_DATA_SIZE_STX 1024 /* for 1K xmodem protocol */
#define USE_1K_XMODEM 0 /* 1 for use 1k_xmodem 0 for xmodem */
#define TIMEOUT_USEC 0
#define TIMEOUT_SEC(buflen,baud) (buflen*20/baud+2)/*接收超时*/
#define TIMEOUT_USEC 0
// 是否使用1K-xModem协议
#if (USE_1K_XMODEM)
#define XMODEM_DATA_SIZE XMODEM_DATA_SIZE_STX
#define XMODEM_HEAD XMODEM_STX
#else
#define XMODEM_DATA_SIZE XMODEM_DATA_SIZE_SOH
#define XMODEM_HEAD XMODEM_SOH
#endif
#define SERIAL_DEVICE "/dev/ttyS0" //串口1 #define MYBAUDRATE B115200
#define RECV_END 0x11 //自定义文件结束符
/*
* This function calculates the CRC used by the "Modem Protocol".
* The first argument is a pointer to the message block. The second argument is the number of bytes in
* the message block. The message block used by the Modem Protocol contains 128 bytes.
* The function return value is an integer which contains the CRC.
*/
void delay(int x)
{
int y;
for(;x>0;x--)
for(y=10;y>0;y--);
}
unsigned short GetCrc16 ( char *ptr, unsigned short count )
{
unsigned short crc, i;
crc = 0;
while(count--)
{
crc = crc ^ (int) *ptr++ << 8;//从packet_data中取一个字节数据，强转为16为int，再把低八位移到高八位，赋值给crc
for(i = 0; i < 8; i++)
{
if(crc & 0x8000)//判断数据的最高位数据是否为1
crc = crc << 1 ^ 0x1021; // CRC-ITU
else
crc = crc << 1;
}
}
return (crc & 0xFFFF);
}
/*******************************************
*receivedata
反垃圾邮件系统*返回实际读入的字节数
*
********************************************/
int PortRecv(int fdcom,char* data,int datalen,int baudrate)
{
int readlen,fs_sel;
int readnum=0x00;库顶切换阀
char readtemp=0;
fd_set fs_read;
struct timeval tv_timeout;
FD_ZERO(&fs_read);
FD_SET(fdcom,&fs_read);
tv_timeout.tv_sec=TIMEOUT_SEC(datalen,baudrate);
tv_timeout.tv_usec=TIMEOUT_USEC;
fs_sel=select(fdcom+1,&fs_read,NULL,NULL,NULL);
if(fs_sel)
{
//while(read(fdcom,&readtemp,1));
readnum=0;
while((readtemp!=RECV_END)&&(readnum<=1000))
{
if(read(fdcom,&readtemp,1)>0)
{
data[readnum]=readtemp;
readnum++;
delay(1);
}
}
//printf("readnum is:%d\n",readnum);
return readnum;
//readlen=read(fdcom,data,datalen);
//return(readlen);
}
else
{
perror("select");
return(-1);
}
sky angel vol.99 return(readnum);
}
/*
* 串口初始化.
* Baudrate: 115200 8个数据位, 1个停止位，无奇偶校验位
*/
int Initial_SerialPort(void)
{
int fd;
struct termios options, oldtio;
//打开一个串口设备SERIAL_DEVICE，ＣＯＭ１ fd = open( SERIAL_DEVICE ,
O_RDWR | //O_RDWR：读写标志
O_NOCTTY | //O_NOCTTY：通知linux，本程序不成为打开串口的终端 O_NDELAY ); //O_NDELAY:通知linux，此程序不关心DCD信号线所处状态
