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Serial.c

/*Serial.c
serial send/receive program
*/

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <sys/types.h>
#include <asm/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <signal.h>
#include <sched.h>
#include <sys/resource.h>
#include <sys/io.h>
#include <E12user.h>
#include <packet.h>
#include <coprocessor.h>

#define ARGCHECK(num){if(argc!=num){printf("invalid number of arguements\n");help();return -1;}}

#define OPENDEV(filed,dev){if((filed = open(dev, O_RDWR))<=0){printf("couldn't open %s\n",dev);return -1;}}


static int help(void)
{
const char *help_table = "****************************************************
*E12_Serial                                        *
*Nathan Z. Gustavson                               *
*Emac.inc                                          * 
*"__DATE__"                                       *   
*usage:                                            *   
*E12_Serial device 422/232 r/w/b chars/string/baud *
*                                                  *
*ex:                                               *
*E12_Serial /dev/37e12 232 r 2                     *
*reads 2 characters from the 232 port              *
*                                                  *
*E12_Serial /dev/37e12 422 w hello                 *
*writes hello to the 422 port                      *
*                                                  *
*E12_Serial /dev/37e12 232 b 9600                  *
*sets the baud rate of the 232 port to zero        *
****************************************************\n";
printf("%s",help_table);
return 0;
}

int main(int argc, char *argv[])
{
int fd;
int device=0;
int command;
int chars;
char *string=NULL;
int baud;
Cop_Data *Cop;
unsigned char buffer[100];
int charnum;

ARGCHECK(5);
OPENDEV(fd,argv[1]);

if(!strcmp("232",argv[2]))
   device = RS232PORT;
else
{
  if(!strcmp("422",argv[2]))
     device = RS422PORT;
     else
     {
       printf("invalid device, %s\n",argv[2]);
       help();
     }
}

switch(command=*argv[3])
  {
  case 'r':/*read command*/
chars = strtoul(argv[4],NULL,0);
Cop = CopDeviceCreate(0);

switch(device)
  {
  case RS232PORT:
    string = Cop->RS232_string;    
    break;
  case RS422PORT:
    string = Cop->RS422_string;
    break;
  }

while(strlen(string)<chars)
{
charnum = read(fd,buffer,sizeof(buffer));
E12_Packet_Route(Cop, buffer, sizeof(buffer));
}
string[chars] = 0;
printf("%s\n",string);
break;

  case 'w':/*write command*/
string = argv[4];
E12_Serial_Write(fd, device, strlen(string), string);
break;

  case 'b':/*baud rate command*/
baud = strtoul(argv[4],NULL,0);
E12_Serial_Config(fd, device, baud, EIGHT_BIT);
break;

  }


return 0;
}

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