/***************************************************************************
                          DtoA.c  -  description
                             -------------------
    begin                : Wed Dec 10 2003
    copyright            : (C) 2003 by NZG
    email                : ngustavson@emacinc.com
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/

/*! @defgroup DtoA DtoA - DtoA.c
  This module is used to build the DtoAwrite application.
  DtoA write is used to change the 12 bit value of an external DtoA port.
 */


#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 = "**********************************************
*DtoAwrite                                   *
*Nathan Z. Gustavson                         *
*Emac.inc                                    *
*"__DATE__"                                 *
*usage:                                      *
*DtoAwrite device channel value             *
*ex                                          *
*DtoAwrite /dev/37e12 0 0xff                 *
*writes 0xff to DtoA channel 0               *
**********************************************\n";
printf("%s",help_table);
return 0;
}

int main(int argc, char **argv)
{
int fd,channel,data;
ARGCHECK(3);
channel = strtoul(argv[2],NULL,0);
data = strtoul(argv[3],NULL,0);
OPENDEV(fd,argv[1]);
E12_DtoA_Write(fd, channel,data);
close(fd);
return 0;
}