static long processAo(aoRecord *pr)
{
devInt32Pvt *pPvt = (devInt32Pvt *)pr->dpvt;
asynStatus status;
double value;
if (getCallbackValue(pPvt)) {
/* We got a callback from the driver */
if (pPvt->result.status == asynSuccess) {
pr->rval = pPvt->result.value;
pr->udf = 0;
value = (double)pr->rval + (double)pr->roff;
if(pr->aslo!=0.0) value *= pr->aslo;
value += pr->aoff;
if (pr->linr == menuConvertNO_CONVERSION){
; /*do nothing*/
} else if ((pr->linr == menuConvertLINEAR) ||
(pr->linr == menuConvertSLOPE)) {
value = value*pr->eslo + pr->eoff;
} else {
if(cvtRawToEngBpt(&value,pr->linr,pr->init,
(void *)&pr->pbrk,&pr->lbrk)!=0) {
asynPrint(pPvt->pasynUser, ASYN_TRACE_ERROR,
"%s devAsynInt32 cvtRawToEngBpt failed\n",
pr->name);
(void)recGblSetSevr(pr, WRITE_ALARM, INVALID_ALARM);
return -1;
}
}
pr->val = value;
pr->udf = isnan(value);
}
} else if(pr->pact == 0) {
pPvt->result.value = pr->rval;
if(pPvt->canBlock) pr->pact = 1;
status = pasynManager->queueRequest(pPvt->pasynUser, 0, 0);
if((status==asynSuccess) && pPvt->canBlock) return 0;
if(pPvt->canBlock) pr->pact = 0;
reportQueueRequestStatus(pPvt, status);
}
if(pPvt->result.status == asynSuccess) {
return 0;
}
else {
pasynEpicsUtils->asynStatusToEpicsAlarm(pPvt->result.status, WRITE_ALARM, &pPvt->alarmStat,
INVALID_ALARM, &pPvt->alarmSevr);
(void)recGblSetSevr(pr, pPvt->alarmStat, pPvt->alarmSevr);
pPvt->result.status = asynSuccess;
return -1;
}
}
static long processAo(aoRecord *pr)
{
devInt32Pvt *pPvt = (devInt32Pvt *)pr->dpvt;
asynStatus status;
double value;
getCallbackValue(pPvt);
if(pPvt->gotValue) {
/* This code is for I/O Intr scanned output records, which are not tested yet. */
pr->rval = pPvt->value;
pr->udf = 0;
value = (double)pr->rval + (double)pr->roff;
if(pr->aslo!=0.0) value *= pr->aslo;
value += pr->aoff;
if (pr->linr == menuConvertNO_CONVERSION){
; /*do nothing*/
} else if ((pr->linr == menuConvertLINEAR) ||
(pr->linr == menuConvertSLOPE)) {
value = value*pr->eslo + pr->eoff;
}else{
if(cvtRawToEngBpt(&value,pr->linr,pr->init,
(void *)&pr->pbrk,&pr->lbrk)!=0) {
asynPrint(pPvt->pasynUser, ASYN_TRACE_ERROR,
"%s devAsynInt32 cvtRawToEngBpt failed\n",
pr->name);
recGblSetSevr(pr, READ_ALARM, INVALID_ALARM);
goto done;
}
}
pr->val = value;
pr->udf = isnan(value);
} else if(pr->pact == 0) {
pPvt->value = pr->rval;
if(pPvt->canBlock) pr->pact = 1;
status = pasynManager->queueRequest(pPvt->pasynUser, 0, 0);
if((status==asynSuccess) && pPvt->canBlock) return 0;
if(pPvt->canBlock) pr->pact = 0;
if(status != asynSuccess) {
asynPrint(pPvt->pasynUser, ASYN_TRACE_ERROR,
"%s devAsynInt32 queueRequest %s\n",
pr->name,pPvt->pasynUser->errorMessage);
recGblSetSevr(pr, WRITE_ALARM, INVALID_ALARM);
}
}
done:
pPvt->gotValue = 0;
return 0;
}
static void convert(aiRecord *prec)
{
double val;
val = (double)prec->rval + (double)prec->roff;
/* adjust slope and offset */
if(prec->aslo!=0.0) val*=prec->aslo;
val+=prec->aoff;
/* convert raw to engineering units and signal units */
switch (prec->linr) {
case menuConvertNO_CONVERSION:
break; /* do nothing*/
case menuConvertLINEAR:
case menuConvertSLOPE:
val = (val * prec->eslo) + prec->eoff;
break;
default: /* must use breakpoint table */
if (cvtRawToEngBpt(&val,prec->linr,prec->init,(void *)&prec->pbrk,&prec->lbrk)!=0) {
recGblSetSevr(prec,SOFT_ALARM,MAJOR_ALARM);
}
}
/* apply smoothing algorithm */
if (prec->smoo != 0.0){
if (prec->init) prec->val = val; /* initial condition */
prec->val = val * (1.00 - prec->smoo) + (prec->val * prec->smoo);
}else{
prec->val = val;
}
prec->udf = isnan(prec->val);
return;
}
/* Callback from driver for every received tag, for ao record:
* Check if
*
* 1) pact set -> this is the "finshed the write" callback
* 2) pact not set -> this is the "new value" callback
* Tag value is either different from current record value
* or there is no current record value:
* 2a) disconnected; process record to set WRITE/INVALID
* 2b) PLC's value != record's idea of the current value
* 2c) record is UDF, so this is the first time we get a value
* from the PLC after a reboot
* Causing process if necessary to update the record.
* That process()/scanOnce() call should NOT cause the record to write
* to the PLC because the xxx_write method will notice that
* the PLC and record value agree.
* It will, however, trigger CA monitors.
*
* Problem: Alarms are handled before "write_xx" is called.
* So we have to set udf in here,
* then process() can recognize udf and finally it will
* call write_xx.
*/
static void check_ao_callback(void *arg)
{
aoRecord *rec = (aoRecord *) arg;
struct rset *rset= (struct rset *)(rec->rset);
DevicePrivate *pvt = (DevicePrivate *)rec->dpvt;
double dbl;
CN_DINT dint;
eip_bool process = false;
/* We are about the check and even set val, & rval -> lock */
dbScanLock((dbCommon *)rec);
if (rec->pact)
{
if (rec->tpro)
printf("EIP check_ao_callback('%s'), pact=%d\n",
rec->name, rec->pact);
(*rset->process) ((dbCommon *)rec);
dbScanUnlock((dbCommon *)rec);
return;
}
/* Check if record's (R)VAL is current */
if (!check_data((dbCommon *)rec))
{
if (rec->tpro)
printf("EIP check_ao_callback('%s'), no data\n", rec->name);
(*rset->process) ((dbCommon *)rec);
dbScanUnlock((dbCommon *)rec);
return;
}
if (get_CIP_typecode(pvt->tag->data) == T_CIP_REAL)
{
if (rec->tpro)
printf("EIP check_ao_callback('%s') w/ real data\n", rec->name);
if (get_CIP_double(pvt->tag->data, pvt->element, &dbl) &&
(rec->udf || rec->sevr == INVALID_ALARM || rec->val != dbl))
{
if (rec->tpro)
printf("'%s': got %g from driver\n", rec->name, dbl);
if (!rec->udf && pvt->special & SPCO_FORCE)
{
if (rec->tpro)
printf("'%s': will re-write record's value %g\n",
rec->name, rec->val);
}
else
{
rec->val = rec->pval = dbl;
rec->udf = false;
if (rec->tpro)
printf("'%s': updated record's value %g\n",
rec->name, rec->val);
}
process = true;
}
}
else
{
if (rec->tpro)
printf("EIP check_ao_callback('%s') w/ int. data\n", rec->name);
if (get_CIP_DINT(pvt->tag->data, pvt->element, &dint) &&
(rec->udf || rec->sevr == INVALID_ALARM || rec->rval != dint))
{
if (rec->tpro)
printf("AO '%s': got %ld from driver\n",
rec->name, (long)dint);
if (!rec->udf && pvt->special & SPCO_FORCE)
{
if (rec->tpro)
printf("AO '%s': will re-write record's rval 0x%X\n",
rec->name, (unsigned int)rec->rval);
}
else
{
/* back-convert raw value into val (copied from ao init) */
dbl = (double)dint + (double)rec->roff;
if (rec->aslo!=0.0)
dbl *= rec->aslo;
dbl += rec->aoff;
switch (rec->linr)
{
case menuConvertNO_CONVERSION:
rec->val = rec->pval = dbl;
rec->udf = false;
break;
case menuConvertLINEAR:
case menuConvertSLOPE:
dbl = dbl*rec->eslo + rec->eoff;
rec->val = rec->pval = dbl;
rec->udf = false;
break;
default:
if (cvtRawToEngBpt(&dbl,rec->linr,rec->init,
(void *)&rec->pbrk,
&rec->lbrk)!=0)
break; /* cannot back-convert */
rec->val = rec->pval = dbl;
rec->udf = false;
}
if (rec->tpro)
printf("'%s': updated record's value to %g\n",
rec->name, rec->val);
}
process = true;
}
}
dbScanUnlock((dbCommon *)rec);
/* Does record need processing and is not periodic? */
if (process && rec->scan < SCAN_1ST_PERIODIC)
scanOnce(rec);
}
static long init_record(aoRecord *prec, int pass)
{
struct aodset *pdset;
double eoff = prec->eoff, eslo = prec->eslo;
double value;
if (pass==0) return(0);
/* ao.siml must be a CONSTANT or a PV_LINK or a DB_LINK */
if (prec->siml.type == CONSTANT) {
recGblInitConstantLink(&prec->siml,DBF_USHORT,&prec->simm);
}
if(!(pdset = (struct aodset *)(prec->dset))) {
recGblRecordError(S_dev_noDSET,(void *)prec,"ao: init_record");
return(S_dev_noDSET);
}
/* get the initial value if dol is a constant*/
if (prec->dol.type == CONSTANT) {
if(recGblInitConstantLink(&prec->dol,DBF_DOUBLE,&prec->val))
prec->udf = isnan(prec->val);
}
/* must have write_ao function defined */
if ((pdset->number < 6) || (pdset->write_ao ==NULL)) {
recGblRecordError(S_dev_missingSup,(void *)prec,"ao: init_record");
return(S_dev_missingSup);
}
prec->init = TRUE;
/*The following is for old device support that doesnt know about eoff*/
if ((prec->eslo==1.0) && (prec->eoff==0.0)) {
prec->eoff = prec->egul;
}
if (pdset->init_record) {
long status=(*pdset->init_record)(prec);
if (prec->linr == menuConvertSLOPE) {
prec->eoff = eoff;
prec->eslo = eslo;
}
switch(status){
case(0): /* convert */
value = (double)prec->rval + (double)prec->roff;
if(prec->aslo!=0.0) value *= prec->aslo;
value += prec->aoff;
if (prec->linr == menuConvertNO_CONVERSION){
; /*do nothing*/
} else if ((prec->linr == menuConvertLINEAR) ||
(prec->linr == menuConvertSLOPE)) {
value = value*prec->eslo + prec->eoff;
}else{
if(cvtRawToEngBpt(&value,prec->linr,prec->init,
(void *)&prec->pbrk,&prec->lbrk)!=0) break;
}
prec->val = value;
prec->udf = isnan(value);
break;
case(2): /* no convert */
break;
default:
recGblRecordError(S_dev_badInitRet,(void *)prec,"ao: init_record");
return(S_dev_badInitRet);
}
}
prec->oval = prec->pval = prec->val;
prec->mlst = prec->val;
prec->alst = prec->val;
prec->lalm = prec->val;
prec->oraw = prec->rval;
prec->orbv = prec->rbv;
return(0);
}