315 lines
8.4 KiB
C
315 lines
8.4 KiB
C
/* recMbbiDirect.c */
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/* share/src/rec @(#)recMbbiDirect.c 1.2 1/4/94 */
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/* recMbbiDirect.c - Record Support routines for mbboDirect records */
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/*
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* Original Author: Bob Dalesio
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* Current Author: Matthew Needes
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* Date: 10-07-93
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*
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* Experimental Physics and Industrial Control System (EPICS)
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*
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* Copyright 1991, the Regents of the University of California,
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* and the University of Chicago Board of Governors.
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*
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* This software was produced under U.S. Government contracts:
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* (W-7405-ENG-36) at the Los Alamos National Laboratory,
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* and (W-31-109-ENG-38) at Argonne National Laboratory.
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*
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* Initial development by:
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* The Controls and Automation Group (AT-8)
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* Ground Test Accelerator
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* Accelerator Technology Division
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* Los Alamos National Laboratory
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*
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* Co-developed with
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* The Controls and Computing Group
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* Accelerator Systems Division
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* Advanced Photon Source
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* Argonne National Laboratory
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*
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* Modification Log:
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* -----------------
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* (modifications to mbbi apply, see mbbi record)
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* 1. mcn "Created" by borrowing mbbi record code, and modifying it.
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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 <lstLib.h>
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#include <string.h>
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#include <alarm.h>
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#include <dbDefs.h>
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#include <dbAccess.h>
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#include <dbFldTypes.h>
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#include <devSup.h>
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#include <errMdef.h>
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#include <recSup.h>
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#include <special.h>
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#define GEN_SIZE_OFFSET
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#include <mbbiDirectRecord.h>
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#undef GEN_SIZE_OFFSET
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/* Create RSET - Record Support Entry Table*/
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#define report NULL
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#define initialize NULL
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static long init_record();
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static long process();
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#define special NULL
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static long get_value();
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#define cvt_dbaddr NULL
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#define get_array_info NULL
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#define put_array_info NULL
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#define get_units NULL
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#define get_precision NULL
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#define get_enum_str NULL
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#define get_enum_strs NULL
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#define put_enum_str NULL
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#define get_graphic_double NULL
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#define get_control_double NULL
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#define get_alarm_double NULL
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struct rset mbbiDirectRSET={
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RSETNUMBER,
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report,
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initialize,
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init_record,
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process,
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special,
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get_value,
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cvt_dbaddr,
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get_array_info,
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put_array_info,
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get_units,
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get_precision,
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get_enum_str,
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get_enum_strs,
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put_enum_str,
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get_graphic_double,
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get_control_double,
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get_alarm_double };
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struct mbbidset { /* multi bit binary input dset */
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long number;
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DEVSUPFUN dev_report;
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DEVSUPFUN init;
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DEVSUPFUN init_record; /*returns: (-1,0)=>(failure,success)*/
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DEVSUPFUN get_ioint_info;
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DEVSUPFUN read_mbbi;/*(0,2)=>(success, success no convert)*/
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};
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static void refresh_bits();
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static void monitor();
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static long readValue();
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#define NUM_BITS 16
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/* refreshes all the bit fields based on a hardware value */
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static void refresh_bits(pmbbiDirect)
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struct mbbiDirectRecord *pmbbiDirect;
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{
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int i, mask = 1;
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char *bit;
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bit = &(pmbbiDirect->b0);
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for (i=0; i<NUM_BITS; i++, mask = mask << 1, bit++) {
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if (pmbbiDirect->val & mask) {
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if (*bit == 0) {
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*bit = 1;
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db_post_events(pmbbiDirect,bit,DBE_VALUE);
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}
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}
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else {
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if (*bit != 0) {
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*bit = 0;
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db_post_events(pmbbiDirect,bit,DBE_VALUE);
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}
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}
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}
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}
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static long init_record(pmbbiDirect,pass)
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struct mbbiDirectRecord *pmbbiDirect;
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int pass;
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{
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struct mbbidset *pdset;
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long status;
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int i;
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if (pass==0) return(0);
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/* mbbi.siml must be a CONSTANT or a PV_LINK or a DB_LINK or a CA_LINK*/
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switch (pmbbiDirect->siml.type) {
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case (CONSTANT) :
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recGblInitConstantLink(&pmbbiDirect->siml,DBF_USHORT,&pmbbiDirect->simm);
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break;
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case (PV_LINK) :
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case (DB_LINK) :
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break;
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default :
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recGblRecordError(S_db_badField,(void *)pmbbiDirect,
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"mbbiDirect: init_record Illegal SIML field");
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return(S_db_badField);
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}
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/* mbbi.siol must be a CONSTANT or a PV_LINK or a DB_LINK or a CA_LINK*/
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switch (pmbbiDirect->siol.type) {
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case (CONSTANT) :
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recGblInitConstantLink(&pmbbiDirect->siol,DBF_USHORT,&pmbbiDirect->sval);
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break;
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case (PV_LINK) :
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case (DB_LINK) :
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break;
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default :
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recGblRecordError(S_db_badField,(void *)pmbbiDirect,
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"mbbiDirect: init_record Illegal SIOL field");
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return(S_db_badField);
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}
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if(!(pdset = (struct mbbidset *)(pmbbiDirect->dset))) {
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recGblRecordError(S_dev_noDSET,(void *)pmbbiDirect,"mbbiDirect: init_record");
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return(S_dev_noDSET);
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}
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/* must have read_mbbi function defined */
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if( (pdset->number < 5) || (pdset->read_mbbi == NULL) ) {
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recGblRecordError(S_dev_missingSup,(void *)pmbbiDirect,"mbbiDirect: init_record");
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return(S_dev_missingSup);
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}
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/* initialize mask*/
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pmbbiDirect->mask = 0;
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for (i=0; i<pmbbiDirect->nobt; i++) {
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pmbbiDirect->mask <<= 1; /* shift left 1 bit*/
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pmbbiDirect->mask |= 1; /* set low order bit*/
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}
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if( pdset->init_record ) {
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if((status=(*pdset->init_record)(pmbbiDirect))) return(status);
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refresh_bits(pmbbiDirect);
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}
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return(0);
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}
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static long process(pmbbiDirect)
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struct mbbiDirectRecord *pmbbiDirect;
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{
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struct mbbidset *pdset = (struct mbbidset *)(pmbbiDirect->dset);
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long status;
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unsigned char pact=pmbbiDirect->pact;
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if( (pdset==NULL) || (pdset->read_mbbi==NULL) ) {
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pmbbiDirect->pact=TRUE;
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recGblRecordError(S_dev_missingSup,(void *)pmbbiDirect,"read_mbbi");
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return(S_dev_missingSup);
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}
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status=readValue(pmbbiDirect); /* read the new value */
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/* check if device support set pact */
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if ( !pact && pmbbiDirect->pact ) return(0);
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pmbbiDirect->pact = TRUE;
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recGblGetTimeStamp(pmbbiDirect);
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if(status==0) { /* convert the value */
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unsigned long rval = pmbbiDirect->rval;
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if(pmbbiDirect->shft>0) rval >>= pmbbiDirect->shft;
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pmbbiDirect->val = (unsigned short)rval;
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}
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else if(status == 2) status = 0;
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/* check event list */
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monitor(pmbbiDirect);
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/* process the forward scan link record */
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recGblFwdLink(pmbbiDirect);
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pmbbiDirect->pact=FALSE;
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return(status);
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}
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static long get_value(pmbbiDirect,pvdes)
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struct mbbiDirectRecord *pmbbiDirect;
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struct valueDes *pvdes;
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{
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pvdes->field_type = DBF_USHORT;
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pvdes->no_elements=1;
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(unsigned short *)(pvdes->pvalue) = &pmbbiDirect->val;
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return(0);
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}
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static void monitor(pmbbiDirect)
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struct mbbiDirectRecord *pmbbiDirect;
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{
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unsigned short monitor_mask;
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/*
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* Monitors for Bit Fields are done in the refresh_bits()
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* routine.
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*/
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monitor_mask = recGblResetAlarms(pmbbiDirect);
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monitor_mask |= (DBE_LOG|DBE_VALUE);
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if(monitor_mask)
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db_post_events(pmbbiDirect,&pmbbiDirect->val,monitor_mask);
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/* check for value change */
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if (pmbbiDirect->mlst != pmbbiDirect->val) {
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/* post events for value change and archive change */
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monitor_mask |= (DBE_VALUE | DBE_LOG);
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/* update last value monitored */
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pmbbiDirect->mlst = pmbbiDirect->val;
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}
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/* send out monitors connected to the value field */
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if (monitor_mask){
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db_post_events(pmbbiDirect,&pmbbiDirect->val,monitor_mask);
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}
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if(pmbbiDirect->oraw!=pmbbiDirect->rval) {
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db_post_events(pmbbiDirect,&pmbbiDirect->rval,monitor_mask|DBE_VALUE);
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pmbbiDirect->oraw = pmbbiDirect->rval;
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}
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return;
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}
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static long readValue(pmbbiDirect)
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struct mbbiDirectRecord *pmbbiDirect;
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{
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long status;
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struct mbbidset *pdset = (struct mbbidset *) (pmbbiDirect->dset);
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if (pmbbiDirect->pact == TRUE){
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status=(*pdset->read_mbbi)(pmbbiDirect);
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refresh_bits(pmbbiDirect);
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return(status);
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}
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status=dbGetLink(&(pmbbiDirect->siml),DBR_ENUM,
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&(pmbbiDirect->simm),0,0);
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if (status)
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return(status);
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if (pmbbiDirect->simm == NO){
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status=(*pdset->read_mbbi)(pmbbiDirect);
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refresh_bits(pmbbiDirect);
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return(status);
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}
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if (pmbbiDirect->simm == YES){
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status=dbGetLink(&(pmbbiDirect->siol),
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DBR_USHORT,&(pmbbiDirect->sval),0,0);
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if (status==0){
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pmbbiDirect->val=pmbbiDirect->sval;
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pmbbiDirect->udf=FALSE;
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refresh_bits(pmbbiDirect);
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}
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status=2; /* dont convert */
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} else {
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status=-1;
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recGblSetSevr(pmbbiDirect,SOFT_ALARM,INVALID_ALARM);
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return(status);
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}
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recGblSetSevr(pmbbiDirect,SIMM_ALARM,pmbbiDirect->sims);
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return(status);
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}
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