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55dfe5ff388a78f89cc2aed2bf7a9e29dd7c6c67
pcas/src/vxWorks/devOpt/devGpibInteract.c
John Winans 55dfe5ff38 Initial revision
1991-11-27 10:04:13 +00:00

564 lines
14 KiB
C
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/* gpibInteract.c */
/* share/src/devOpt $Id$ */
/*
* Author: Ned D. Arnold
* Date: 06/19/91
*
* Experimental Physics and Industrial Control System (EPICS)
*
* Copyright 1988, 1989, the Regents of the University of California,
* and the University of Chicago Board of Governors.
*
* This software was produced under U.S. Government contracts:
* (W-7405-ENG-36) at the Los Alamos National Laboratory,
* and (W-31-109-ENG-38) at Argonne National Laboratory.
*
* Initial development by:
* The Controls and Automation Group (AT-8)
* Ground Test Accelerator
* Accelerator Technology Division
* Los Alamos National Laboratory
*
* Co-developed with
* The Controls and Computing Group
* Accelerator Systems Division
* Advanced Photon Source
* Argonne National Laboratory
*
* All rights reserved. No part of this publication may be reproduced,
* stored in a retrieval system, transmitted, in any form or by any
* means, electronic, mechanical, photocopying, recording, or otherwise
* without prior written permission of Los Alamos National Laboratory
* and Argonne National Laboratory.
*
* Modification Log:
* -----------------
* .01 06-19-91 nda initial coding & debugging
* .02 09-23-91 jrw added proper multi-link support
*
*/
/* gpibInteract.c - allows interactive GPIB message transmissions */
/*
* gpibInteract allows the user to interactively set up gpib messages,
* submit them to the gpibOwn Queue, and display the result. Five
* gpib messages can be defined at a time.
*/
#include <vxWorks.h>
#include <sysLib.h>
#include <iosLib.h>
#include <types.h>
#include <stdioLib.h>
#include <strLib.h>
#include <semLib.h>
#include <lstLib.h>
#include <rngLib.h>
#include <taskLib.h>
#include <alarm.h>
#include <cvtTable.h>
#include <dbDefs.h>
#include <dbAccess.h>
#include <devSup.h>
#include <drvSup.h>
#include <link.h>
#include <module_types.h>
#include <dbCommon.h>
#include <drvGpibInterface.h>
#define GPIBREAD 1
#define GPIBWRITE 2
#define GPIBCMD 3
#define MAX_MSG_LENGTH 80
extern struct drvGpibSet drvGpib; /* entry points to driver functions */
int gpibWork();
struct gpibIntCmd {
struct dpvtGpibHead head;
char type; /* R, W, C for read, write, command */
char cmd[MAX_MSG_LENGTH]; /* string to send to instrument */
char resp[MAX_MSG_LENGTH+32];/* place for response if a GPIB read */
long count; /* used for counting */
char busy; /* used by timing routine */
};
static struct gpibIntCmd gpibIntCmds[] =
{
{NULL, NULL, gpibWork, 0, 0, NULL, 'R', "", "", 0, 0},
{NULL, NULL, gpibWork, 0, 0, NULL, 'R', "", "", 0, 0},
{NULL, NULL, gpibWork, 0, 0, NULL, 'R', "", "", 0, 0},
{NULL, NULL, gpibWork, 0, 0, NULL, 'R', "", "", 0, 0},
{NULL, NULL, gpibWork, 0, 0, NULL, 'R', "", "", 0, 0},
{NULL, NULL, gpibWork, 0, 0, NULL, 'R', "", "", 0, 0}
};
#define LIST_SIZE sizeof(gpibIntCmds)/sizeof(struct gpibIntCmd)
/* declare other required variables used by more than one routine */
BOOL replyIsBack; /* reset by sender, set by replyReceived() */
extern int ibDebug;
int GIDebug = 0;
int sendMsg();
int gpibWork();
int configMsg();
int getInt();
int getChar();
int getString();
int showGpibMsg();
int timingStudy();
static int firstTime = 1;
static SEM_ID msgReply;
int
GI()
{
unsigned char ans;
int cnt;
if(firstTime)
{
firstTime = 0;
msgReply = semCreate();
}
ans = 0; /* set loop not to exit */
printf("\n\n");
while ((ans != 'q') && (ans != 'Q'))
{
printf("\n\nInteractive GPIB Program\n");
printf("Select a function:\n"); /* main menu */
printf(" 'C' to configure send message content\n");
printf(" 'D' to display transmit & receive messages\n");
printf(" 'S' to send & receive a message one time\n");
printf(" 'T' to do timing on messages\n");
printf(" 'R' to turn on the GPIB debugging flag\n");
printf(" 'r' to turn off the GPIB debugging flag\n");
printf(" 'Q' to quit program\n");
printf(">");
ans = 0; /* clear previous selection */
getChar(&ans);
switch (ans) {
case 'c': /* configure message contents */
case 'C':
configMsg();
break;
case 's':
case 'S': /* one shot: send one message */
sendMsg();
break;
case 't':
case 'T': /* Timing analysis */
timingStudy();
break;
case 'd':
case 'D': /* Display message contents */
for (cnt = 1; cnt < LIST_SIZE; cnt++) /* for each message */
showGpibMsg(cnt);
printf("\nHit CR to return to Main Menu ...");
getChar(&ans); /* dummy input */
break;
case 'q':
case 'Q': /* quit */
break;
case 'r': /* turn off ibDebug */
ibDebug = 0;
break;
case 'R': /* turn on ibDebug */
ibDebug = 1;
break;
} /* end case */
} /* end of while ans== q or Q */
return(0);
} /* end of main */
static int
timingStudy()
{
struct gpibIntCmd *pCmd[LIST_SIZE];
int inInt; /* input integer from operator */
int reps; /* number of times to send a message */
ULONG startTime;
ULONG endTime;
ULONG delta;
int Reps;
int i;
int j;
for (i=0; i<LIST_SIZE; i++)
{
printf("\nEnter Message# to Send (1 thru 5, <cr> to terminate list) > ");
if (getInt(&inInt))
{
if (inInt>0 && inInt<LIST_SIZE)
{
pCmd[i] = &gpibIntCmds[inInt]; /* assign pointer to desired entry */
pCmd[i]->busy = 0; /* mark message 'not in queue' */
pCmd[i]->count = 0;
}
else
{
pCmd[i] = NULL; /* terminate the list */
i = LIST_SIZE;
}
}
else
{
pCmd[i] = NULL; /* terminate the list */
i = LIST_SIZE;
}
}
printf("Enter the number of messages to send > ");
if (!getInt(&inInt))
return; /* if no entry, return to main menu */
if(inInt < 0)
return;
reps = inInt;
Reps = reps;
startTime = tickGet(); /* time the looping started */
while(reps)
{
for(i=0; i<LIST_SIZE && reps; i++)
{
if (pCmd[i] != NULL)
{
if (!(pCmd[i]->busy))
{
pCmd[i]->count++;
pCmd[i]->busy = 1; /* mark the xact as busy */
(*(drvGpib.qGpibReq))(GPIB_IO, pCmd[i]->head.link, pCmd[i], 2);
reps--;
if (reps%10000 == 0)
{
printf("Timing study in progress with %d messages left, current status:\n", reps);
for (j=0; j<LIST_SIZE; j++)
{
if(pCmd[j] != NULL)
{
printf("Message %d transmissions: %ld\n", j, pCmd[j]->count);
}
else
j = LIST_SIZE;
}
}
}
}
else
i = LIST_SIZE; /* force an exit from the loop */
}
semTake(msgReply);
}
endTime = tickGet();
delta = (endTime - startTime); /* measured time in ticks */
if (delta == 0)
delta = 1;
printf("Total transmit and receiving time = %ld/60 Sec\n", delta);
printf("Messages/second = %.2f\n", (float) (60*Reps)/(float)delta);
for (i=0; i<LIST_SIZE; i++)
{
if(pCmd[i] != NULL)
{
printf("Message %d transmissions: %ld\n", i, pCmd[i]->count);
}
else
i = LIST_SIZE;
}
return(OK);
}
/* sendMsg() ***************************************************
*/
static int
sendMsg()
{
struct gpibIntCmd *pCmd;
int inInt; /* input integer from operator */
int msgNum; /* index to array of messages */
int ticks; /* # of ticks since message was sent */
int maxTicks = 480; /* # of ticks to wait for reply (8 seconds) */
printf("\nEnter Message # to Send (1 thru 5) > ");
if (!getInt(&inInt))
return; /* if no entry, return to main menu */
if((inInt >= LIST_SIZE) || (inInt < 0))
return;
msgNum = inInt;
pCmd = &gpibIntCmds[msgNum]; /* assign pointer to desired entry */
replyIsBack = FALSE;
ticks = 0;
(*(drvGpib.qGpibReq))(GPIB_IO, pCmd->head.link, pCmd, 2); /* queue the msg */
while (!replyIsBack && (ticks < maxTicks)) /* wait for reply msg */
{
taskDelay(1);
ticks++;
}
if (replyIsBack)
{
showGpibMsg(msgNum);
}
else
printf("No Reply Received ...\n");
}
static int
gpibWork(pCmd)
struct gpibIntCmd *pCmd;
{
char msgBuf[MAX_MSG_LENGTH + 1];
int status;
if (GIDebug || ibDebug)
logMsg("GI's gpibWork() was called for command >%s<\n", pCmd->cmd);
switch (pCmd->type) {
case 'w':
case 'W': /* write the message to the GPIB listen adrs */
status =(*(drvGpib.writeIb))(GPIB_IO, pCmd->head.link, 0, pCmd->head.device, pCmd->cmd, strlen(pCmd->cmd));
if (status == ERROR)
strcpy(pCmd->resp, "GPIB TIMEOUT (while talking)");
else
pCmd->resp[0] = '\0';
break;
case 'r':
case 'R': /* write the command string */
status = (*(drvGpib.writeIb))(GPIB_IO, pCmd->head.link, 0, pCmd->head.device, pCmd->cmd, strlen(pCmd->cmd));
if (status == ERROR)
{
strcpy(pCmd->resp, "GPIB TIMEOUT (while talking)");
break;
}
/* read the instrument */
pCmd->resp[0] = 0; /* clear response string */
status = (*(drvGpib.readIb))(GPIB_IO, pCmd->head.link, 0, pCmd->head.device, pCmd->resp, MAX_MSG_LENGTH);
if (status == ERROR)
{
strcat(pCmd->resp, "GPIB ERROR (while listening)");
break;
}
else if (status > (MAX_MSG_LENGTH - 1)) /* check length of resp */
{
printf("GPIB Response length equaled allocated space !!!\n");
pCmd->resp[(MAX_MSG_LENGTH)] = '\0'; /* place \0 at end */
}
else
{
pCmd->resp[status] = '\0'; /* terminate response with \0 */
}
break;
}
pCmd->busy = 0;
replyIsBack = TRUE;
semGive(msgReply);
return(IDLE);
}
/*--------------------------------------------------------------------
* configMsg()
*
* - Purpose
* Prompts the operator for the contents of a GPIB message
* Displays current value of the field as the default entry
*
*/
static int
configMsg()
{
struct gpibIntCmd *pCmd;
int msgNum; /* index to array of messages */
int inInt; /* input integer from operator */
unsigned char inChar; /* input char from operator */
char inString[MAX_MSG_LENGTH]; /* input string from operator */
printf("\nEnter Message # to Configure (1 thru 5) > ");
if (!getInt(&inInt))
return; /* if no entry, return to main menu */
if((inInt >= LIST_SIZE) || (inInt < 0))
return;
msgNum = inInt;
pCmd = &gpibIntCmds[msgNum]; /* assign pointer to desired entry */
printf("\n\n Configuring Send Message # %1.1d .... \n", msgNum);
/* Prompt the Operator with the current value of each parameter If
* only a <CR> is typed, keep current value, else replace value with
* entered value
*/
printf("\nenter Enter GPIB Link # [%2.2d] > ", (int) pCmd->head.link);
if (getInt(&inInt) == 1)
pCmd->head.link = inInt;
printf("\nenter GPIB Node # [%2.2d] > ", pCmd->head.device);
if (getInt(&inInt) == 1)
{
pCmd->head.device = inInt;
}
printf("\nenter command type R, W, C [%c] > ", pCmd->type);
if (getChar(&inChar) == 1)
pCmd->type = inChar;
printf("\nenter string to send (no quotes) [%.80s] > ", pCmd->cmd);
if (getString(inString) == 1)
strcpy(pCmd->cmd, inString);
pCmd->resp[0]= 0; /* clear response string */
showGpibMsg(msgNum);
}
/*
* getInt(pInt) ****************************************************
*
* gets a line of input from STDIN (10 characters MAX !!!!) scans the line
* for an integer.
*
* Parm1 : pointer to an integer
*
* Returns (0) if a <CR> was hit, *pInt left unchanged. Returns (1) if a new
* value was written to *pvalue. Returns (2) if a entry was not a valid
* integer entry
*
*/
static int
getInt(pInt)
int *pInt;
{
char input[10];
int inval;
gets(input);
if (input[0] == 0) /* if only a <CR> */
return (0);
else
{
if (sscanf(input, "%d", &inval) == 1)
{ /* if a valid entry ... */
*pInt = inval;
return (1);
}
else /* if not a valid entry, return 2 */
return (2);
}
}
/*
* int getChar(pChar) **************************************************
*
* gets a line of input from STDIN (10 characters MAX !!!!) scans the line
* for a character entry
*
* Parm1 : pointer to an unsigned character variable
*
* Returns(0) if a <CR> was hit, *pChar left unchanged. Returns(1) if a new
* value was written to *pChar
*
*/
static int
getChar(pChar)
unsigned char *pChar;
{
char input[10];
unsigned char inval;
gets(input);
if (input[0] == 0)
return (0);
else
{
sscanf(input, "%c", &inval);
*pChar = inval;
return (1);
}
}
/*
* int getString(pString) ****************************************************
*
* gets a line of input from STDIN (100 characters MAX !!!!) .
* If length is greater than 0, copies string into pString
*
* Parm1 : pointer to an character string
*
* Returns : 0 if a <CR> was hit, *pvalue left unchanged Returns : 1 if a
* new value was written to *pvalue
*
*/
static int
getString(pString)
char *pString;
{
char input[100];
gets(input);
if (input[0] == 0)
return (0);
else
{
strcpy(pString, input);
return (1);
}
}
/*
* showGpibMsg(msgNum) ***********************************************
*
*
* Print the gpib message contents onto the screen.
* msgNum selects the message to be displayed
*
*/
static int
showGpibMsg(msgNum)
int msgNum;
{
struct gpibIntCmd *pCmd = &gpibIntCmds[msgNum];
printf("\nMessage #%1.1d : ", msgNum);
printf("Link=%2.2d Adrs=%2.2d Type=%c\n",
(int)pCmd->head.link, pCmd->head.device, pCmd->type);
printf(" Command String : %.40s\n", pCmd->cmd);
printf(" Response String : %.40s\n", pCmd->resp);
}
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