motorfbak.c -- Read the primary and secondary feedback for a motor
/* motorfbak.c */
/* Copyright(c) 1991-2006 by Motion Engineering, Inc. All rights reserved.
*
* This software contains proprietary and confidential information of
* Motion Engineering Inc., and its suppliers. Except as may be set forth
* in the license agreement under which this software is supplied, use,
* disclosure, or reproduction is prohibited without the prior express
* written consent of Motion Engineering, Inc.
*/
/*
:Read the primary and secondary feedback for a motor.
Warning! This is a sample program to assist in the integration of an
MEI motion controller with your application. It may not contain all
of the logic and safety features that your application requires.
*/
#include <stdlib.h>
#include <stdio.h>
#include "stdmpi.h"
#include "stdmei.h"
#include "apputil.h"
#if defined(ARG_MAIN_RENAME)
#define main motorfbakMain
argMainRENAME(main, motorfbak)
#endif
/* Command line arguments and defaults */
long motorNumber = 0;
Arg argList[] = {
{ "-motor", ArgTypeLONG, &motorNumber, },
{ NULL, ArgTypeINVALID, NULL, }
};
int
main(int argc,
char *argv[])
{
MPIControl control; /* motion controller handle */
MPIMotor motor; /* motor handle(s) */
MPIMotorFeedback feedback;
MPIControlType controlType;
MPIControlAddress controlAddress;
long argIndex;
long returnValue; /* return value from library */
/* Parse command line for Control type and address */
argIndex =
argControl(argc,
argv,
&controlType,
&controlAddress);
/* Parse command line for application-specific arguments */
while (argIndex < argc) {
long argIndexNew;
argIndexNew = argSet(argList, argIndex, argc, argv);
if (argIndexNew <= argIndex) {
argIndex = argIndexNew;
break;
}
else {
argIndex = argIndexNew;
}
}
/* Check for unknown/invalid command line arguments */
if ((argIndex < argc) ||
(motorNumber >= MEIXmpMAX_Motors)) {
meiPlatformConsole("usage: %s %s\n"
"\t\t[-motor # (0 .. %d)]\n",
argv[0],
ArgUSAGE,
MEIXmpMAX_Motors - 1);
exit(MPIMessageARG_INVALID);
}
/* Obtain a Control handle. */
control =
mpiControlCreate(controlType,
&controlAddress);
msgCHECK(mpiControlValidate(control));
/* Initialize the controller */
returnValue = mpiControlInit(control);
msgCHECK(returnValue);
/* Create motor object using motorNumber on controller */
motor =
mpiMotorCreate(control,
motorNumber);
msgCHECK(mpiMotorValidate(motor));
meiPlatformConsole("(Press any key to quit)\nMotor %ld \n", motorNumber);
while (meiPlatformKey(MPIWaitPOLL) <= 0) {
/* Read the motor's feedback */
returnValue =
mpiMotorFeedback(motor,
&feedback);
msgCHECK(returnValue);
meiPlatformConsole("\rPrimary: %12.0lf Secondary: %12.0lf",
feedback[MPIMotorEncoderPRIMARY],
feedback[MPIMotorEncoderSECONDARY]);
}
meiPlatformConsole("\n");
returnValue = mpiMotorDelete(motor);
msgCHECK(returnValue);
returnValue = mpiControlDelete(control);
msgCHECK(returnValue);
return ((int)returnValue);
}
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