Experimental Physics and
Industrial Control System

Hello,

I am writing portDriver for aio card. I read some data from asynInt32 and asynInt32Array interface type:

static asynInt32 drvAio16Int32 = {

NULL,

readInt32,

getBounds,

NULL,

NULL

};

static asynInt32Array drvAio16Int32Array = {

NULL,

readInt32Array,

NULL,

NULL

};

...

Ok interfaces inicialization and ....

...

pPvt->common.interfaceType = asynCommonType;

pPvt->common.pinterface = (void *)&aio16Common;

pPvt->common.drvPvt = pPvt;

pPvt->int32.interfaceType = asynInt32Type;

pPvt->int32.pinterface = (void *)&drvAio16Int32;

pPvt->int32.drvPvt = pPvt;

pPvt->int32Array.interfaceType = asynInt32ArrayType;

pPvt->int32Array.pinterface = (void *)&drvAio16Int32Array;

pPvt->int32Array.drvPvt = pPvt;

...

And asynInt32Array adn asynInt32 read methods are as follows

...

static asynStatus readInt32( void *drvPvt, asynUser *pasynUser, epicsInt32 *value )

{

drvAio16Pvt *pPvt = (drvAio16Pvt *)drvPvt;

rtems_unsigned8 channel;

rtems_unsigned16 data, size;

pasynManager->getAddr(pasynUser, &channel);

....

some code (calculating...)

....

*value = ( epicsInt32 )data_buffer[0];

asynPrint(pasynUser, ASYN_TRACEIO_DRIVER,

"drvAio16, port %s, read %d from channel %d\n",

pPvt->port_name, *value, channel);

return asynSucces;

}

/* Asyn Waveform read routine */

static asynStatus readInt32Array(void *drvPvt, asynUser *pasynUser, epicsInt32 *value, size_t nelements, size_t *nIn)

{

drvAio16Pvt *pPvt = (drvAio16Pvt *)drvPvt;

rtems_unsigned32 read_samples, i;

pasynManager->getAddr(pasynUser, &channel);

....

some code (calculating...)

....

return asynSucces;

}

When I run episc database in which I have some ai record type everything working fine but when I add waveform record type I get following error:

fatal error: dbScanLock. Bad case choice.

So what it's different between asynInt32 and asynInt32array read routine? Why asynInt32 read routine work but asynInt32Array read routine crash?

Episc version: 3.14.8.2

Asyn version: 4.3

Build target RTEMS-pc386

Thanks in advance!