143 lines
3.1 KiB
C
143 lines
3.1 KiB
C
/* devAiCamac.c */
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/* devAiCamac.c - Device Support Routines for Generic Camac Analogue input */
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/*
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* Original Author: Dave Barker
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* Current Author: Johnny Tang
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* Date: 27th July 1993.
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*
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* Experimental Physics and Industrial Control System (EPICS)
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*
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* Copyright 1993, SURA CEBAF.
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*
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*
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* Modification Log:
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* -----------------
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* 4/14/94 jt modify cebaf_camacio to camacio data struct
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*/
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#include <vxWorks.h>
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#include <types.h>
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#include <stdioLib.h>
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#include <string.h>
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#include <dbDefs.h>
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#include <recSup.h>
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#include <devSup.h>
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#include <devCamac.h>
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#include <link.h>
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#include <aiRecord.h>
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#include "camacLib.h"
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#define DEBUG_ON 1
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/* Create the dset for devAiCamac */
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static long init();
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static long init_record();
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static long read_ai();
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struct {
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long number;
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DEVSUPFUN report;
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DEVSUPFUN init;
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DEVSUPFUN init_record;
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DEVSUPFUN get_ioint_info;
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DEVSUPFUN read_ai;
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DEVSUPFUN special_linconv;
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}devAiCamac={
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6,
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NULL,
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init,
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init_record,
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NULL,
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read_ai,
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NULL};
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static long init(after)
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int after;
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{
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#ifdef DEBUG_ON
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if ( CDEBUG) printf("devAiCamac (init) Called. pass = %d\n", after);
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#endif
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return(0);
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}
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static long init_record(pai)
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struct aiRecord *pai;
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{
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struct camacio *pcamacio;
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struct dinfo *pcio;
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int fsd;
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#ifdef DEBUG_ON
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if ( CDEBUG)printf("devAiCamac (init_record) Called.\n");
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#endif
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/* ai.inp must be a CAMAC_IO */
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switch (pai->inp.type) {
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case (CAMAC_IO) :
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pcio = (struct dinfo *)malloc(sizeof(struct dinfo));
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if (pcio == NULL) {
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#ifdef DEBUG_ON
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if ( CDEBUG)printf("devAiCamac (init_record): malloc failed.\n");
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#endif
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return(DO_NOT_CONVERT);
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}
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pcio->ext = 0;
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pcamacio = (struct camacio *)&(pai->inp.value);
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#ifdef DEBUG_ON
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if ( CDEBUG) printf("devAiCamac (init_record): B=%d C=%d N=%d A=%d F=%d\n",
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pcamacio->b, pcamacio->c, pcamacio->n, pcamacio->a, pcamacio->f);
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#endif
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cdreg(&(pcio->ext), pcamacio->b, pcamacio->c, pcamacio->n, pcamacio->a);
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if(!(pcio->ext))
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{
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pai->dpvt = (long *)pcio;
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return(DO_NOT_CONVERT); /* cdreg failed if ext is zero */
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}
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sscanf((char *)pcamacio->parm, "%i",&fsd);
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if (fsd > 0) {
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if (!(fsd & (fsd+1))) fsd++; /* camac card count should be 2's power */
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pai->eslo = (pai->eguf - pai->egul)/fsd;
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}
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for (pcio->mask=1; pcio->mask < fsd; pcio->mask=pcio->mask<<1);
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pcio->mask--;
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pcio->f = pcamacio->f;
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pai->dpvt = (long *)pcio;
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break;
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default :
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recGblRecordError(S_db_badField,(void *)pai,
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"devAiCamac (init_record) Illegal INP field");
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return(S_db_badField);
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}
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return(0);
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}
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static long read_ai(pai)
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struct aiRecord *pai;
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{
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register struct dinfo *pcio;
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int q;
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pcio = (struct dinfo *)pai->dpvt;
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if(!(pcio->ext)) return(DO_NOT_CONVERT);
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#ifdef DEBUG_ON
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if ( CDEBUG) printf("devAiCamac (read_ai): f=%d ext=%ld mask=%ld\n",
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pcio->f, pcio->ext, pcio->mask);
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#endif
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q=0;
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cfsa(pcio->f, pcio->ext, &(pai->rval), &q);
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pai->rval &= pcio->mask;
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if(q) return(CONVERT);
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else return(DO_NOT_CONVERT);
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}
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