645通汛类.txt

基于国际645协议的485接口的电度表通汛类

#include           <stdio.h>         
#include           <stdlib.h>         
#include           <unistd.h>           
#include           <sys/types.h> 
#include           <sys/stat.h> 
#include           <fcntl.h>             
#include           <termios.h>         
#include           <errno.h>             

#define   FALSE     -1 
#define   TRUE       0 
/*********************************************************************/ 
int   OpenDev(char   *Dev) 
{ 
int fd   =   open(   Dev,   O_RDWR   );                 
if   (-1   ==   fd) 
{ 
perror( "Can ' 't   Open   Serial   Port "); 
return   -1; 
} 
else 
{ 
printf( "%s\n ",   Dev); 
return   fd; 
} 
} 

struct   termio 
{ 
unsigned   short   c_iflag; 
unsigned   short   c_oflag; 
unsigned   short   c_cflag; 
unsigned   short   c_lflag; 
unsigned   char     c_line; 
//unsigned   char     c_cc[]; 
}; 

int   speed_arr[]   =   {B38400,B19200,B9600,B4800,B2400,B1200,B300,B38400,B19200,B9600,B4800,B2400,B1200,B300,}; 
int   name_arr[]   =   {38400,19200,9600,4800,2400,1200,300,38400,19200,9600,4800,2400,1200,300,}; 
void   set_speed(int   fd,   int   speed) 
{ 
int   i; 
int   status; 
struct   termios   Opt; 
tcgetattr(fd,   &Opt); 
for(i   =   0;   i   <   sizeof(speed_arr)/sizeof(int);   i++) 
{ 
if(speed   ==   name_arr[i]) 
{ 
tcflush(fd,   TCIOFLUSH); 
cfsetispeed(&Opt,   speed_arr[i]); 
cfsetospeed(&Opt,   speed_arr[i]); 
status   =   tcsetattr(fd,   TCSANOW,   &Opt); 
if(status   !=   0) 
{ 
perror( "tcsetattr   fd1 "); 
return; 
} 
tcflush(fd,   TCIOFLUSH); 
} 
} 

} 

int   set_Parity(int   fd,int   databits,int   stopbits,int   parity) 
{ 
struct   termios   options; 
if     (   tcgetattr(   fd,&options)     !=     0)   
{ 
perror( "SetupSerial   1 "); 
return(FALSE); 
} 
options.c_cflag   &=   ~CSIZE; 
switch   (databits)   /**/ 
{ 
case   7: 
options.c_cflag   |=   CS7; 
break; 
case   8: 
options.c_cflag   |=   CS8; 
break; 
default: 
fprintf(stderr, "Unsupported   data   sizen ");   return   (FALSE); 
} 
switch   (parity)   
{       
case   'n ': 
case   'N ': 
options.c_cflag   &=   ~PARENB;       
options.c_iflag   &=   ~INPCK;           
break; 
case   'o ': 
case   'O ': 
options.c_cflag   |=   (PARODD   |   PARENB);   
options.c_iflag   |=   INPCK;                           
break; 
case   'e ': 
case   'E ': 
options.c_cflag   |=   PARENB;     
options.c_cflag   &=   ~PARODD;       
options.c_iflag   |=   INPCK;               
break; 
case   'S ': 
case   's ':     
        options.c_cflag   &=   ~PARENB; 
options.c_cflag   &=   ~CSTOPB;break; 
default: 
fprintf(stderr, "Unsupported   parityn "); 
return   (FALSE); 
} 
/*   */ 
switch   (stopbits) 
{ 
case   1: 
options.c_cflag   &=   ~CSTOPB; 
break; 
case   2: 
options.c_cflag   |=   CSTOPB; 
    break; 
default: 
  fprintf(stderr, "Unsupported   stop   bitsn "); 
  return   (FALSE); 
} 

if   (parity   !=   'n ') 
options.c_iflag   |=   INPCK; 
tcflush(fd,TCIFLUSH); 
options.c_cc[VTIME]   =   150;   
options.c_cc[VMIN]   =   0;   
if   (tcsetattr(fd,TCSANOW,&options)   !=   0) 
{ 
perror( "SetupSerial   3 "); 
return   (FALSE); 
} 
return   (TRUE); 
} 


int   main(int   argc,   char   **argv){ 
int   i; 
int   fd; 
int   nread; 
int   nwrite; 

char   buff_write[14]; 
char   buff_read[14]; 
char   buff_wake[2]; 

char   sendbuff[512]; 
char   recvbuff[512]; 

char   *dev     =   "/dev/ttyS0 ";   
fd   =   OpenDev(dev); 
set_speed(fd,1200); 
if   (set_Parity(fd,8,1, 'E ')   ==   FALSE) 
  { 
printf( "Set   Parity   Errorn "); 
exit   (0); 
} 

buff_wake[0]   =   0xFE; 
buff_wake[1]   =   0xFE; 

buff_write[0]   =   0x68; 
buff_write[1]   =   0x08; 
buff_write[2]   =   0x1E; 
buff_write[3]   =   0x02; 
buff_write[4]   =   0x1E; 
buff_write[5]   =   0x00; 
buff_write[6]   =   0x00; 
buff_write[7]   =   0x68; 
buff_write[8]   =   0x01; 
buff_write[9]   =   0x02; 
buff_write[10]   =   0x43; 
buff_write[11]   =   0xC3; 
buff_write[12]   =   0x1F; 
buff_write[13]   =   0x16; 
  
// int   nwrite1   =   write(fd,buff_wake,2); 
nwrite   =   write(fd,buff_write,14); 
// while(1) 
// { 
nread   =   read(fd,recvbuff,512); 
recvbuff[nread+1]   =   '\0 '; 
printf( "%s ",recvbuff); 
// } 
for(i   =   0;   i   <   512;   i++) 
{ 
printf( "\n%c ",recvbuff[i]); 
} 
close(fd); 
exit   (0); 
} 




电表是哪个厂商的？ 
buff_write[0]   =   0x68;//68开始 
buff_write[1]   =   0x08;//表地址 
buff_write[2]   =   0x1E;//表地址 
buff_write[3]   =   0x02;//表地址 
buff_write[4]   =   0x1E;//表地址 
buff_write[5]   =   0x00;//表地址 
buff_write[6]   =   0x00;//表地址 
buff_write[7]   =   0x68;//68开始 
buff_write[8]   =   0x01;//命令码 
buff_write[9]   =   0x02;//数据长度 
buff_write[10]   =   0x43;//数据 
buff_write[11]   =   0xC3;//数据 
buff_write[12]   =   0x1F;//cs 
buff_write[13]   =   0x16;//结束码 
一般的电表都采用1200的拨特率；485通信

还有要发出1到4个fe唤醒对方