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devS7plc.c
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devS7plc.c
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#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <stdio.h>
#include <limits.h>
#include <alarm.h>
#include <dbAccess.h>
#include <recGbl.h>
#include <devSup.h>
#include <devLib.h>
#include <errlog.h>
#include <epicsVersion.h>
#include <biRecord.h>
#include <boRecord.h>
#include <mbbiRecord.h>
#include <mbboRecord.h>
#include <mbbiDirectRecord.h>
#include <mbboDirectRecord.h>
#include <longinRecord.h>
#include <longoutRecord.h>
#include <aiRecord.h>
#include <aoRecord.h>
#include <stringinRecord.h>
#include <stringoutRecord.h>
#include <waveformRecord.h>
#include <aaiRecord.h>
#include <aaoRecord.h>
#ifdef BASE_VERSION
#define EPICS_3_13
#include "compat3_13.h"
#else
#include <postfix.h>
#include <calcoutRecord.h>
#include <cantProceed.h>
#include <epicsExport.h>
#endif
#include "drvS7plc.h"
#define isnan(x) ((x)!=(x))
/* suppress compiler warning concerning long long with __extension__ */
#if (!defined __GNUC__) || (__GNUC__ < 2) || (__GNUC__ == 2 && __GNUC_MINOR__ < 8)
#define __extension__
#endif
#ifndef epicsUInt64
#if (LONG_MAX > 2147483647L)
#define epicsUInt64 unsigned long
#define CONV64 "%016lx"
#else
#define epicsUInt64 unsigned long long
#define CONV64 "%016llx"
#endif
#endif
#define S7MEM_TIME 100
typedef struct { /* Private structure to save IO arguments */
s7plcStation *station; /* Card id */
unsigned short offs; /* Offset (in bytes) within memory block */
unsigned short bit; /* Bit number (0-15) for bi/bo */
unsigned short dtype; /* Data type */
unsigned short dlen; /* Data length (in bytes) */
epicsInt32 hwLow; /* Hardware Low limit */
epicsInt32 hwHigh; /* Hardware High limit */
} S7memPrivate_t;
STATIC int s7plcIoParse(char* recordName, char *parameters, S7memPrivate_t *);
STATIC long s7plcGetInIntInfo(int cmd, dbCommon *record, IOSCANPVT *ppvt);
STATIC long s7plcGetOutIntInfo(int cmd, dbCommon *record, IOSCANPVT *ppvt);
struct devsup {
long number;
DEVSUPFUN report;
DEVSUPFUN init;
DEVSUPFUN init_record;
DEVSUPFUN get_ioint_info;
DEVSUPFUN io;
};
/* stringout for address ********************************************/
STATIC long s7plcInitRecordAddr(stringoutRecord *);
STATIC long s7plcWriteAddr(stringoutRecord *);
struct devsup s7plcAddr =
{
5,
NULL,
NULL,
s7plcInitRecordAddr,
NULL,
s7plcWriteAddr
};
epicsExportAddress(dset, s7plcAddr);
/* bi for status bit ************************************************/
STATIC long s7plcInitRecordStat(biRecord *);
STATIC long s7plcReadStat(biRecord *);
struct devsup s7plcStat =
{
5,
NULL,
NULL,
s7plcInitRecordStat,
s7plcGetInIntInfo,
s7plcReadStat
};
epicsExportAddress(dset, s7plcStat);
/* bi ***************************************************************/
STATIC long s7plcInitRecordBi(biRecord *);
STATIC long s7plcReadBi(biRecord *);
struct devsup s7plcBi =
{
5,
NULL,
NULL,
s7plcInitRecordBi,
s7plcGetInIntInfo,
s7plcReadBi
};
epicsExportAddress(dset, s7plcBi);
/* bo ***************************************************************/
STATIC long s7plcInitRecordBo(boRecord *);
STATIC long s7plcWriteBo(boRecord *);
struct devsup s7plcBo =
{
5,
NULL,
NULL,
s7plcInitRecordBo,
s7plcGetOutIntInfo,
s7plcWriteBo
};
epicsExportAddress(dset, s7plcBo);
/* mbbi *************************************************************/
STATIC long s7plcInitRecordMbbi(mbbiRecord *);
STATIC long s7plcReadMbbi(mbbiRecord *);
struct devsup s7plcMbbi =
{
5,
NULL,
NULL,
s7plcInitRecordMbbi,
s7plcGetInIntInfo,
s7plcReadMbbi
};
epicsExportAddress(dset, s7plcMbbi);
/* mbbo *************************************************************/
STATIC long s7plcInitRecordMbbo(mbboRecord *);
STATIC long s7plcWriteMbbo(mbboRecord *);
struct devsup s7plcMbbo =
{
5,
NULL,
NULL,
s7plcInitRecordMbbo,
s7plcGetOutIntInfo,
s7plcWriteMbbo
};
epicsExportAddress(dset, s7plcMbbo);
/* mbbiDirect *******************************************************/
STATIC long s7plcInitRecordMbbiDirect(mbbiDirectRecord *);
STATIC long s7plcReadMbbiDirect(mbbiDirectRecord *);
struct devsup s7plcMbbiDirect =
{
5,
NULL,
NULL,
s7plcInitRecordMbbiDirect,
s7plcGetInIntInfo,
s7plcReadMbbiDirect
};
epicsExportAddress(dset, s7plcMbbiDirect);
/* mbboDirect *******************************************************/
STATIC long s7plcInitRecordMbboDirect(mbboDirectRecord *);
STATIC long s7plcWriteMbboDirect(mbboDirectRecord *);
struct devsup s7plcMbboDirect =
{
5,
NULL,
NULL,
s7plcInitRecordMbboDirect,
s7plcGetOutIntInfo,
s7plcWriteMbboDirect
};
epicsExportAddress(dset, s7plcMbboDirect);
/* longin ***********************************************************/
STATIC long s7plcInitRecordLongin(longinRecord *);
STATIC long s7plcReadLongin(longinRecord *);
struct devsup s7plcLongin =
{
5,
NULL,
NULL,
s7plcInitRecordLongin,
s7plcGetInIntInfo,
s7plcReadLongin
};
epicsExportAddress(dset, s7plcLongin);
/* longout **********************************************************/
STATIC long s7plcInitRecordLongout(longoutRecord *);
STATIC long s7plcWriteLongout(longoutRecord *);
struct devsup s7plcLongout =
{
5,
NULL,
NULL,
s7plcInitRecordLongout,
s7plcGetOutIntInfo,
s7plcWriteLongout
};
epicsExportAddress(dset, s7plcLongout);
/* ai ***************************************************************/
STATIC long s7plcInitRecordAi(aiRecord *);
STATIC long s7plcReadAi(aiRecord *);
STATIC long s7plcSpecialLinconvAi(aiRecord *, int after);
struct {
long number;
DEVSUPFUN report;
DEVSUPFUN init;
DEVSUPFUN init_record;
DEVSUPFUN get_ioint_info;
DEVSUPFUN read;
DEVSUPFUN special_linconv;
} s7plcAi =
{
6,
NULL,
NULL,
s7plcInitRecordAi,
s7plcGetInIntInfo,
s7plcReadAi,
s7plcSpecialLinconvAi
};
epicsExportAddress(dset, s7plcAi);
/* ao ***************************************************************/
STATIC long s7plcInitRecordAo(aoRecord *);
STATIC long s7plcWriteAo(aoRecord *);
STATIC long s7plcSpecialLinconvAo(aoRecord *, int after);
struct {
long number;
DEVSUPFUN report;
DEVSUPFUN init;
DEVSUPFUN init_record;
DEVSUPFUN get_ioint_info;
DEVSUPFUN write;
DEVSUPFUN special_linconv;
} s7plcAo =
{
6,
NULL,
NULL,
s7plcInitRecordAo,
s7plcGetOutIntInfo,
s7plcWriteAo,
s7plcSpecialLinconvAo
};
epicsExportAddress(dset, s7plcAo);
/* stringin *********************************************************/
STATIC long s7plcInitRecordStringin(stringinRecord *);
STATIC long s7plcReadStringin(stringinRecord *);
struct devsup s7plcStringin =
{
5,
NULL,
NULL,
s7plcInitRecordStringin,
s7plcGetInIntInfo,
s7plcReadStringin
};
epicsExportAddress(dset, s7plcStringin);
/* stringout ********************************************************/
STATIC long s7plcInitRecordStringout(stringoutRecord *);
STATIC long s7plcWriteStringout(stringoutRecord *);
struct devsup s7plcStringout =
{
5,
NULL,
NULL,
s7plcInitRecordStringout,
s7plcGetOutIntInfo,
s7plcWriteStringout
};
epicsExportAddress(dset, s7plcStringout);
/* waveform *********************************************************/
STATIC long s7plcInitRecordWaveform(waveformRecord *);
STATIC long s7plcReadWaveform(waveformRecord *);
struct devsup s7plcWaveform =
{
5,
NULL,
NULL,
s7plcInitRecordWaveform,
s7plcGetInIntInfo,
s7plcReadWaveform
};
epicsExportAddress(dset, s7plcWaveform);
/* aai **************************************************************/
STATIC long s7plcInitRecordAai(aaiRecord *);
STATIC long s7plcReadAai(aaiRecord *);
struct devsup s7plcAai =
{
5,
NULL,
NULL,
s7plcInitRecordAai,
s7plcGetInIntInfo,
s7plcReadAai
};
epicsExportAddress(dset, s7plcAai);
/* aao **************************************************************/
STATIC long s7plcInitRecordAao(aaoRecord *);
STATIC long s7plcWriteAao(aaoRecord *);
struct devsup s7plcAao =
{
5,
NULL,
NULL,
s7plcInitRecordAao,
s7plcGetInIntInfo,
s7plcWriteAao
};
epicsExportAddress(dset, s7plcAao);
/* calcout **********************************************************/
#ifndef EPICS_3_13
STATIC long s7plcInitRecordCalcout(calcoutRecord *);
STATIC long s7plcWriteCalcout(calcoutRecord *);
struct {
long number;
DEVSUPFUN report;
DEVSUPFUN init;
DEVSUPFUN init_record;
DEVSUPFUN get_ioint_info;
DEVSUPFUN write;
DEVSUPFUN special_linconv;
} s7plcCalcout = {
6,
NULL,
NULL,
s7plcInitRecordCalcout,
s7plcGetOutIntInfo,
s7plcWriteCalcout,
NULL
};
epicsExportAddress(dset, s7plcCalcout);
#endif
/********* Support for "I/O Intr" for input records ******************/
STATIC long s7plcGetInIntInfo(int cmd, dbCommon *record, IOSCANPVT *ppvt)
{
S7memPrivate_t* p = record->dpvt;
if (p == NULL)
{
recGblRecordError(S_db_badField, record,
"s7plcGetInIntInfo: uninitialized record");
return -1;
}
*ppvt = s7plcGetInScanPvt(p->station);
return 0;
}
/********* Support for "I/O Intr" for output records ****************/
STATIC long s7plcGetOutIntInfo(int cmd, dbCommon *record, IOSCANPVT *ppvt)
{
S7memPrivate_t* p = record->dpvt;
if (p == NULL)
{
recGblRecordError(S_db_badField, record,
"s7plcGetInIntInfo: uninitialized record");
return -1;
}
*ppvt = s7plcGetOutScanPvt(p->station);
return 0;
}
/***********************************************************************
* Routine to parse IO arguments
* IO address line format:
*
* <devName>/<a>[+<o>] [T=<datatype>] [B=<bitnumber>] [L=<hwLow|strLen>] [H=<hwHigh>]
*
* where: <devName> - symbolic device name
* <a+o> - address (byte number) within memory block
* <params> - parameters to be passed to a particular
* devSup parsering routine
* <datatype> - INT8, INT16, INT32,
* UINT16 (or UNSIGN16), UINT32 (or UNSIGN32),
* REAL32 (or FLOAT), REAL64 (or DOUBLE),
* STRING,TIME
* <bitnumber> - least significant bit is 0
* <hwLow> - raw value that mapps to EGUL
* <hwHigh> - raw value that mapps to EGUF
**********************************************************************/
STATIC int s7plcIoParse(char* recordName, char *par, S7memPrivate_t *priv)
{
char devName[255];
char *p = par, separator;
int nchar, i;
int status = 0;
struct {char* name; int dlen; epicsType type;} datatypes [] =
{
{ "INT8", 1, epicsInt8T },
{ "UINT8", 1, epicsUInt8T },
{ "UNSIGN8", 1, epicsUInt8T },
{ "BYTE", 1, epicsUInt8T },
{ "CHAR", 1, epicsUInt8T },
{ "INT16", 2, epicsInt16T },
{ "SHORT", 2, epicsInt16T },
{ "UINT16", 2, epicsUInt16T },
{ "UNSIGN16", 2, epicsUInt16T },
{ "WORD", 2, epicsUInt16T },
{ "INT32", 4, epicsInt32T },
{ "LONG", 4, epicsInt32T },
{ "UINT32", 4, epicsUInt32T },
{ "UNSIGN32", 4, epicsUInt32T },
{ "DWORD", 4, epicsUInt32T },
{ "REAL32", 4, epicsFloat32T },
{ "FLOAT32", 4, epicsFloat32T },
{ "FLOAT", 4, epicsFloat32T },
{ "REAL64", 8, epicsFloat64T },
{ "FLOAT64", 8, epicsFloat64T },
{ "DOUBLE", 8, epicsFloat64T },
{ "TIME", 1, S7MEM_TIME },
{ "BCD", 1, S7MEM_TIME }
};
/* Get rid of leading whitespace and non-alphanumeric chars */
while (!isalnum((unsigned char)*p))
if (*p++ == '\0') return S_drv_badParam;
/* Get device name */
nchar = strcspn(p, "/");
strncpy(devName, p, nchar);
devName[nchar] = '\0';
p += nchar;
separator = *p++;
s7plcDebugLog(1, "s7plcIoParse %s: station=%s\n", recordName, devName);
priv->station = s7plcOpen(devName);
if (!priv->station)
{
errlogSevPrintf(errlogFatal, "s7plcIoParse %s: device not found\n",
recordName);
return S_drv_noDevice;
}
/* Check station offset */
if (separator == '/')
{
priv->offs = strtol(p, &p, 0);
separator = *p++;
/* Handle any number of optional +o additions to the offs */
while (separator == '+')
{
priv->offs += strtol(p, &p, 0);
separator = *p++;
}
}
else
{
priv->offs = 0;
}
s7plcDebugLog(1,
"s7plcIoParse %s: offs=%d\n", recordName, priv->offs);
/* set default values for parameters */
if (!priv->dtype && !priv->dlen)
{
priv->dtype = epicsInt16T;
priv->dlen = 2;
}
priv->bit = 0;
priv->hwLow = 0;
priv->hwHigh = 0;
/* allow whitespaces before parameter for device support */
while ((separator == '\t') || (separator == ' '))
separator = *p++;
/* handle parameter for device support if present */
nchar = 0;
if (separator != '\'') p--; /* quote is optional*/
/* parse parameters */
while (p && *p)
{
switch (*p)
{
case ' ':
case '\t':
p++;
break;
case 'T': /* T=<datatype> */
p+=2;
if (strncmp(p,"STRING",6) == 0)
{
priv->dtype = epicsStringT;
p += 6;
}
else
{
static int maxtype =
sizeof(datatypes)/sizeof(*datatypes);
for (i = 0; i < maxtype; i++)
{
nchar = strlen(datatypes[i].name);
if (strncmp(p, datatypes[i].name, nchar) == 0)
{
priv->dtype = datatypes[i].type;
priv->dlen = datatypes[i].dlen;
p += nchar;
break;
}
}
if (i == maxtype)
{
errlogSevPrintf(errlogFatal,
"s7plcIoParse %s: invalid datatype %s\n",
recordName, p);
return S_drv_badParam;
}
}
break;
case 'B': /* B=<bitnumber> */
p += 2;
priv->bit = strtol(p,&p,0);
break;
case 'L': /* L=<low raw value> (converts to EGUL)*/
p += 2;
priv->hwLow = strtol(p,&p,0);
break;
case 'H': /* L=<high raw value> (converts to EGUF)*/
p += 2;
priv->hwHigh = strtol(p,&p,0);
break;
case '\'':
if (separator == '\'')
{
p = 0;
break;
}
default:
errlogSevPrintf(errlogFatal,
"s7plcIoParse %s: unknown parameter '%c'\n",
recordName, *p);
return S_drv_badParam;
}
}
/* for T=STRING L=... means length, not low */
if (priv->dtype == epicsStringT && priv->hwLow)
{
priv->dlen = priv->hwLow;
priv->hwLow = 0;
}
/* check if bit number is in range */
if (priv->bit && priv->bit >= priv->dlen*8)
{
errlogSevPrintf(errlogFatal,
"s7plcIoParse %s: invalid bit number %d (>%d)\n",
recordName, priv->bit, priv->dlen*8-1);
return S_drv_badParam;
}
/* get default values for L and H if user did'n define them */
switch (priv->dtype)
{
case epicsUInt8T:
if (priv->hwHigh > 0xFF) status = S_drv_badParam;
if (!priv->hwHigh) priv->hwLow = 0x00;
if (!priv->hwHigh) priv->hwHigh = 0xFF;
break;
case epicsUInt16T:
if (priv->hwHigh > 0xFFFF) status = S_drv_badParam;
if (!priv->hwHigh) priv->hwLow = 0x0000;
if (!priv->hwHigh) priv->hwHigh = 0xFFFF;
break;
case epicsUInt32T:
if (!priv->hwHigh) priv->hwLow = 0x00000000;
if (!priv->hwHigh) priv->hwHigh = 0xFFFFFFFF;
break;
case epicsInt8T:
if (priv->hwHigh > 0x7F) status = S_drv_badParam;
if (!priv->hwHigh) priv->hwLow = 0xFFFFFF81;
if (!priv->hwHigh) priv->hwHigh = 0x0000007F;
break;
case epicsInt16T:
if (priv->hwHigh > 0x7FFF) status = S_drv_badParam;
if (!priv->hwHigh) priv->hwLow = 0xFFFF8001;
if (!priv->hwHigh) priv->hwHigh = 0x00007FFF;
break;
case epicsInt32T:
if (!priv->hwHigh) priv->hwLow = 0x80000001;
if (!priv->hwHigh) priv->hwHigh = 0x7FFFFFFF;
break;
default:
if (priv->hwHigh || priv->hwLow) {
errlogSevPrintf(errlogMinor,
"s7plcIoParse %s: L or H makes"
" no sense with this data type\n",
recordName);
}
break;
}
s7plcDebugLog(1, "s7plcIoParse %s: dlen=%d\n",recordName, priv->dlen);
s7plcDebugLog(1, "s7plcIoParse %s: B=%d\n", recordName, priv->bit);
s7plcDebugLog(1, "s7plcIoParse %s: L=%#x\n", recordName, priv->hwLow);
s7plcDebugLog(1, "s7plcIoParse %s: H=%#x\n", recordName, priv->hwHigh);
if (status)
{
errlogSevPrintf(errlogMinor,
"s7plcIoParse %s: L or H out of range for this data type\n",
recordName);
return status;
}
return 0;
}
/* stringout for address ********************************************/
STATIC long s7plcInitRecordAddr(stringoutRecord *record)
{
S7memPrivate_t *priv;
int status;
if (record->out.type != INST_IO)
{
recGblRecordError(S_db_badField, record,
"s7plcInitRecordStat: illegal OUT field type");
return S_db_badField;
}
priv = (S7memPrivate_t *)callocMustSucceed(1, sizeof(S7memPrivate_t),
"s7plcInitRecordAddr");
status = s7plcIoParse(record->name,
record->out.value.instio.string, priv);
if (status)
{
recGblRecordError(S_db_badField, record,
"s7plcInitRecordAddr: bad OUT field");
return S_db_badField;
}
assert(priv->station);
record->dpvt = priv;
if (record->val[0] == 0)
if (s7plcGetAddr(priv->station, record->val) == 0)
{
record->udf = 0;
record->sevr = 0;
}
return 0;
}
STATIC long s7plcWriteAddr(stringoutRecord *record)
{
S7memPrivate_t *priv = (S7memPrivate_t *)record->dpvt;
s7plcSetAddr(priv->station, record->val);
return 0;
}
/* bi for status bit ************************************************/
STATIC long s7plcInitRecordStat(biRecord *record)
{
S7memPrivate_t *priv;
int status;
if (record->inp.type != INST_IO)
{
recGblRecordError(S_db_badField, record,
"s7plcInitRecordStat: illegal INP field type");
return S_db_badField;
}
priv = (S7memPrivate_t *)callocMustSucceed(1, sizeof(S7memPrivate_t),
"s7plcInitRecordStat");
status = s7plcIoParse(record->name,
record->inp.value.instio.string, priv);
if (status)
{
recGblRecordError(S_db_badField, record,
"s7plcInitRecordStat: bad INP field");
return S_db_badField;
}
assert(priv->station);
record->dpvt = priv;
return 0;
}
STATIC long s7plcReadStat(biRecord *record)
{
int status;
S7memPrivate_t *priv = (S7memPrivate_t *)record->dpvt;
if (!priv)
{
recGblSetSevr(record, UDF_ALARM, INVALID_ALARM);
errlogSevPrintf(errlogFatal,
"%s: not initialized\n", record->name);
return -1;
}
assert(priv->station);
/* psudo-read (0 bytes) just to get the connection status */
status = s7plcReadArray(priv->station, 0, 0, 0, NULL);
if (status == S_drv_noConn)
{
record->rval = 0;
return 0;
}
if (status)
{
recGblSetSevr(record, READ_ALARM, INVALID_ALARM);
record->rval = 0;
return status;
}
record->rval = 1;
return 0;
}
/* bi ***************************************************************/
STATIC long s7plcInitRecordBi(biRecord *record)
{
S7memPrivate_t *priv;
int status;
if (record->inp.type != INST_IO)
{
recGblRecordError(S_db_badField, record,
"s7plcInitRecordBi: illegal INP field type");
return S_db_badField;
}
priv = (S7memPrivate_t *)callocMustSucceed(1,
sizeof(S7memPrivate_t), "s7plcInitRecordBi");
status = s7plcIoParse(record->name,
record->inp.value.instio.string, priv);
if (status)
{
recGblRecordError(S_db_badField, record,
"s7plcInitRecordBi: bad INP field");
return S_db_badField;
}
assert(priv->station);
switch (priv->dtype)
{
case epicsInt8T:
case epicsUInt8T:
case epicsInt16T:
case epicsUInt16T:
case epicsInt32T:
case epicsUInt32T:
break;
default:
errlogSevPrintf(errlogFatal,
"s7plcInitRecordBi %s: illegal data type\n",
record->name);
return S_db_badField;
}
record->mask = 1 << priv->bit;
record->dpvt = priv;
return 0;
}
STATIC long s7plcReadBi(biRecord *record)
{
int status;
S7memPrivate_t *priv = (S7memPrivate_t *)record->dpvt;
epicsUInt8 rval8;
epicsUInt16 rval16;
epicsUInt32 rval32;
if (!priv)
{
recGblSetSevr(record, UDF_ALARM, INVALID_ALARM);
errlogSevPrintf(errlogFatal,
"%s: not initialized\n", record->name);
return -1;
}
assert(priv->station);
switch (priv->dtype)
{
case epicsInt8T:
case epicsUInt8T:
status = s7plcRead(priv->station, priv->offs,
1, &rval8);
s7plcDebugLog(3, "bi %s: read 8bit %02x\n",
record->name, rval8);
rval32 = rval8;
break;
case epicsInt16T:
case epicsUInt16T:
status = s7plcRead(priv->station, priv->offs,
2, &rval16);
s7plcDebugLog(3, "bi %s: read 16bit %04x\n",
record->name, rval16);
rval32 = rval16;
break;
case epicsInt32T:
case epicsUInt32T:
status = s7plcRead(priv->station, priv->offs,
4, &rval32);
s7plcDebugLog(3, "bi %s: read 32bit %04x\n",
record->name, rval32);
break;
default:
recGblSetSevr(record, COMM_ALARM, INVALID_ALARM);
errlogSevPrintf(errlogFatal,
"%s: unexpected data type requested\n",
record->name);
return -1;
}
record->rval = rval32 & record->mask;
if (status == S_drv_noConn)
{
recGblSetSevr(record, COMM_ALARM, INVALID_ALARM);
return status;
}
if (status)
{
errlogSevPrintf(errlogFatal,
"%s: read error\n", record->name);
recGblSetSevr(record, READ_ALARM, INVALID_ALARM);
}
return status;
}
/* bo ***************************************************************/
STATIC long s7plcInitRecordBo(boRecord *record)
{
S7memPrivate_t *priv;
int status;
if (record->out.type != INST_IO)
{
recGblRecordError(S_db_badField, record,
"s7plcInitRecordBo: illegal OUT field");
return S_db_badField;
}
priv = (S7memPrivate_t *)callocMustSucceed(1,
sizeof(S7memPrivate_t), "s7plcInitRecordBo");
status = s7plcIoParse(record->name,
record->out.value.instio.string, priv);
if (status)
{
recGblRecordError(S_db_badField, record,
"s7plcInitRecordBo: bad OUT field");
return S_db_badField;
}
assert(priv->station);
switch (priv->dtype)
{
case epicsInt8T:
case epicsUInt8T:
case epicsInt16T:
case epicsUInt16T:
case epicsInt32T:
case epicsUInt32T:
break;
default:
errlogSevPrintf(errlogFatal,
"s7plcInitRecordBo %s: illegal data type\n",
record->name);
return S_db_badField;
}
record->mask = 1 << priv->bit;
record->dpvt = priv;
return 2; /* preserve whatever is in the VAL field */
}
STATIC long s7plcWriteBo(boRecord *record)
{
int status;
S7memPrivate_t *priv = (S7memPrivate_t *)record->dpvt;
epicsUInt8 rval8, mask8;
epicsUInt16 rval16, mask16;
epicsUInt32 rval32, mask32;
if (!priv)
{
recGblSetSevr(record, UDF_ALARM, INVALID_ALARM);
errlogSevPrintf(errlogFatal,
"%s: not initialized\n", record->name);
return -1;
}
assert(priv->station);
switch (priv->dtype)
{
case epicsInt8T:
case epicsUInt8T:
rval8 = record->rval;
mask8 = record->mask;
s7plcDebugLog(2, "bo %s: write 8bit %02x mask %02x\n",
record->name, rval8, mask8);
status = s7plcWriteMasked(priv->station, priv->offs,
1, &rval8, &mask8);
break;
case epicsInt16T:
case epicsUInt16T:
rval16 = record->rval;
mask16 = record->mask;
s7plcDebugLog(2, "bo %s: write 16bit %04x mask %04x\n",
record->name, rval16, mask16);
status = s7plcWriteMasked(priv->station, priv->offs,
2, &rval16, &mask16);
break;
case epicsInt32T:
case epicsUInt32T:
rval32 = record->rval;
mask32 = record->mask;