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DataX实现Mysql与ElasticSearch（ES）数据同步

黎轩的闲暇时光 2023-09-14 阅读 17
EPICSC语言
此示例展示了从asynPortDriver继承的驱动程序的编写过程，以及演示了在记录中asynInt32, asynUInt32Digital和asynFloat64接口的使用方法。

1、驱动程序源代码：

Readback.h：

/*
 * 从asynPortDriver类继承的asyn驱动
 * 用常见的扫描和I/O Intr扫描测试错误处理
 */
# include "asynPortDriver.h"

 /* 这些是drvInfo字符串，用于标识参数。asyn客户端使用它们， 包含表征的asyn设备支持*/
#define P_Int32ValueString              "INT32_VALUE"           /* asynInt32 */
#define P_BinaryInt32ValueString        "BINARY_INT32_VALUE"    /* asynInt32 */
#define P_MultibitInt32ValueString      "MULTIBIT_INT32_VALUE"  /* asynInt32 */
#define P_Float64ValueString            "FLOAT64_VALUE"         /* asynFloat64 */
#define P_UInt32DValueString            "UINT32D_VALUE"          /* asynUInt32Digital*/
#define P_BinaryUInt32DValueString      "BINARY_UINT32D_VALUE"  /* asynUInt32Digital*/
#define P_MultibitUInt32DValueString    "MULTIBIT_UINT32D_VALUE"/* asynUInt32Digital*/
#define P_InitialStateString            "INITIAL_STATE"         /* asynInt32 */
#define P_StartCountString              "START_COUNT"           /* asynInt32 */


class Readback: public asynPortDriver{
public:
    Readback(const char * portName, int initialReadStatus);
    virtual asynStatus readInt32(asynUser * pasynUser, epicsInt32 * value);
    virtual asynStatus readFloat64(asynUser * pasynUser, epicsFloat64 * value);
    virtual asynStatus readUInt32Digital(asynUser * pasynUser, epicsUInt32 * value, epicsUInt32 mask);
    virtual asynStatus writeInt32(asynUser * pasyUser, epicsInt32 value);
    void startThread(void);

protected:
    /* 用于pasynUser->reason的值，以及对参数库的索引 */
    int P_Int32Value;
    int P_BinaryInt32Value;
    int P_MultibitInt32Value;
    int P_Float64Value;
    int P_UInt32DValue;
    int P_BinaryUInt32DValue;
    int P_MultibitUInt32DValue;
    int P_InitialStateValue;
    int P_StartCountValue;
private:
    /* 我们的数据 */
    asynStatus initialReadStatus_;
    epicsEventId startCount_;
};

Readback.cpp：

#include "epicsThread.h"
#include "epicsTypes.h"
#include "iocsh.h"

#include "Readback.h"
#include "epicsExport.h"

#define UINT32_DIGITAL_MASK         0xFFFFFFFF

static void startThreadC(void * pvt);
/*
    Readback类的基类
    调用asynPortDriver基类的构造器。
    [in] portName:要创建的asyn端口驱动的名称。
 */
Readback::Readback(const char * portName, int initialReadStauts)
    :asynPortDriver(portName,
                    1,
                    asynInt32Mask | asynFloat64Mask |asynUInt32DigitalMask | asynDrvUserMask,
                    asynInt32Mask | asynFloat64Mask |asynUInt32DigitalMask,
                    0,
                    1,
                    0,0), initialReadStatus_((asynStatus)initialReadStauts)
{
    int status;
    /*create paramteters in the parameter library*/
    createParam(P_Int32ValueString,             asynParamInt32,                 &P_Int32Value);
    createParam(P_BinaryInt32ValueString,       asynParamInt32,                 &P_BinaryInt32Value);
    createParam(P_MultibitInt32ValueString,     asynParamInt32,                 &P_MultibitInt32Value);
    createParam(P_Float64ValueString,           asynParamFloat64,               &P_Float64Value);
    createParam(P_UInt32DValueString,           asynParamUInt32Digital,         &P_UInt32DValue);
    createParam(P_BinaryUInt32DValueString,     asynParamUInt32Digital,         &P_BinaryUInt32DValue);
    createParam(P_MultibitUInt32DValueString,   asynParamUInt32Digital,         &P_MultibitUInt32DValue);
    createParam(P_InitialStateString,           asynParamInt32,                 &P_InitialStateValue);
    createParam(P_StartCountString,             asynParamInt32,                 &P_StartCountValue);

    setIntegerParam     (P_Int32Value,          10);
    setParamStatus      (P_Int32Value,          asynSuccess);
    setIntegerParam     (P_BinaryInt32Value,    1);
    setParamStatus      (P_BinaryInt32Value,    asynSuccess);
    setIntegerParam     (P_MultibitInt32Value,  3);
    setParamStatus      (P_MultibitInt32Value,  asynSuccess);
    setIntegerParam     (P_StartCountValue,             0);

    setDoubleParam      (P_Float64Value,        6.6);
    setParamStatus      (P_Float64Value,        asynSuccess);

    setUIntDigitalParam (P_UInt32DValue,        (epicsUInt32)0xFF, UINT32_DIGITAL_MASK, UINT32_DIGITAL_MASK);
    setParamStatus      (P_UInt32DValue,        asynSuccess);
    setUIntDigitalParam (P_BinaryUInt32DValue,  (epicsUInt32)0x01, UINT32_DIGITAL_MASK, UINT32_DIGITAL_MASK);
    setParamStatus      (P_BinaryUInt32DValue,  asynSuccess);
    setUIntDigitalParam (P_MultibitUInt32DValue,  (epicsUInt32)0x03, UINT32_DIGITAL_MASK, UINT32_DIGITAL_MASK);
    setParamStatus      (P_MultibitUInt32DValue,asynSuccess);

    setIntegerParam     (P_InitialStateValue,   initialReadStatus_);

    startCount_ = epicsEventMustCreate(epicsEventEmpty);


    status = (epicsThreadCreate("startThreadC",  epicsThreadPriorityMedium, epicsThreadGetStackSize(epicsThreadStackMedium),
                    (EPICSTHREADFUNC)::startThreadC, (void *)this) == NULL);
    if (status ){
        printf("%s: %s  epicsThreadCreate failed\n", "Readback", "startThreadC");
        return;
    }
}

void Readback::startThread()
{
        epicsInt32 int32, binaryInt32, multibitInt32;
        epicsUInt32 uint32d, binaryuint32d, multibituint32d;
        epicsFloat64 float64;

        lock();

        while (1){
                unlock();
                epicsEventMustWait(startCount_);

                lock();
                getIntegerParam(P_Int32Value, &int32);
                if (int32 > 1000){
                        int32 = 0;
                }
                else{
                        int32 += 1;
                }
                setIntegerParam(P_Int32Value, int32);

                getIntegerParam(P_BinaryInt32Value, &binaryInt32);
                if (binaryInt32 == 0){
                        binaryInt32 = 1;
                }
                else{
                        binaryInt32 = 0;
                }
                setIntegerParam(P_BinaryInt32Value, binaryInt32);

                getIntegerParam(P_MultibitInt32Value, &multibitInt32);
                if (multibitInt32 > 3){
                        multibitInt32 = 0;
                }
                else{
                        multibitInt32 += 0;
                }
                setIntegerParam(P_MultibitInt32Value, multibitInt32);

                getDoubleParam(P_Float64Value, &float64);
                if (float64 > 100){
                        float64 = 0;
                }
                else{
                        float64 += 0.5;
                }
                setDoubleParam(P_Float64Value, float64);


                getUIntDigitalParam (P_UInt32DValue,            &uint32d , UINT32_DIGITAL_MASK);
                if (uint32d == 0xFF){
                        uint32d = 0;
                }
                else{
                        uint32d += 1;
                }
                setUIntDigitalParam(P_UInt32DValue,             uint32d & 0xFF , UINT32_DIGITAL_MASK, UINT32_DIGITAL_MASK);

                getUIntDigitalParam(P_BinaryUInt32DValue,       &binaryuint32d, UINT32_DIGITAL_MASK);
                if (binaryuint32d){
                        binaryuint32d = 0;
                }
                else{
                        binaryuint32d = 1;
                }
                setUIntDigitalParam(P_BinaryUInt32DValue,       binaryuint32d & 0x1, UINT32_DIGITAL_MASK, UINT32_DIGITAL_MASK );

                getUIntDigitalParam(P_MultibitUInt32DValue,     &multibituint32d, UINT32_DIGITAL_MASK);
                if (multibituint32d == 3){
                        multibituint32d = 0;
                }
                else{
                        multibituint32d += 1;
                }
                setUIntDigitalParam(P_MultibitUInt32DValue,     multibituint32d & 0x3, UINT32_DIGITAL_MASK, UINT32_DIGITAL_MASK);

                callParamCallbacks();

                epicsThreadSleep(0.2);
        }
}

asynStatus Readback::writeInt32(asynUser *pasynUser, epicsInt32 value)
{
        int function = pasynUser->reason;

        if (function == P_InitialStateValue){
                initialReadStatus_= (asynStatus)value;
                setIntegerParam(P_InitialStateValue, value);
                callParamCallbacks();
                return asynSuccess;
        }

        else{
                if (function == P_StartCountValue){
                        if (value > 0){
                                epicsEventSignal(startCount_);
                        }
                }
                return asynPortDriver::writeInt32(pasynUser, value);
        }


}


asynStatus Readback::readInt32(asynUser *pasynUser, epicsInt32 *value)
{

//  printf("In Readback:readInt32: initialReadStatus_ = %d\n", initialReadStatus_);
    if (initialReadStatus_){
        return initialReadStatus_;
    }

    return asynPortDriver::readInt32(pasynUser, value);
}

asynStatus Readback::readFloat64(asynUser * pasynUser, epicsFloat64 * value)
{
    if (initialReadStatus_){
        return initialReadStatus_;
    }

    return asynPortDriver::readFloat64(pasynUser, value);
}

asynStatus Readback::readUInt32Digital(asynUser * pasynUser, epicsUInt32 * value, epicsUInt32 mask)
{
     if (initialReadStatus_){
        return initialReadStatus_;
    }

    return asynPortDriver::readUInt32Digital(pasynUser, value, mask);
}

static void startThreadC(void *pvt)
{
        Readback * preadback = (Readback *)pvt;

        preadback->startThread();
}


extern "C"{
int ReadbackConfigure(const char * portName, int initialReadStauts)
{
        new Readback(portName, initialReadStauts);
        return asynSuccess;
}

/* EPICS iocsh shell command */
static const iocshArg initArg0 = {"portName", iocshArgString};
static const iocshArg initArg1 = {"initialReadStatus", iocshArgInt};
static const iocshArg * const initArgs[] = {&initArg0, &initArg1};
static iocshFuncDef initFuncDef = {"ReadbackConfigure", 2, initArgs};

static void initCallFunc(const iocshArgBuf * args)
{
    ReadbackConfigure(args[0].sval, args[1].ival);
}

void ReadbackRegister(void)
{
    iocshRegister(&initFuncDef, initCallFunc);
}

epicsExportRegistrar(ReadbackRegister);
}

2、对应的数据库文件：

1）使用asynInt32接口的数据库记录文件useasynInt32.db：

record(longout, "$(P)StartCount")
{
   field(PINI,  "$(PINI)")
   field(DTYP,  "asynInt32")
   field(OUT,   "@asyn($(PORT),$(ADDR),$(TIMEOUT))START_COUNT")
   info(asyn:READBACK, "1")
}


record(longin,  "$(P)InitialStateIn")
{
   field(DTYP, "asynInt32")
   field(INP,  "@asyn($(PORT),$(ADDR),$(TIMEOUT))INITIAL_STATE")
   field(SCAN, "$(SCAN)")
}

record(longout, "$(P)InitialState")
{
   field(PINI,  "$(PINI)")
   field(DTYP,  "asynInt32")
   field(OUT,   "@asyn($(PORT),$(ADDR),$(TIMEOUT))INITIAL_STATE")
}

record(longout, "$(P)InitialStateRB")
{
   field(PINI,  "$(PINI)")
   field(DTYP,  "asynInt32")
   field(OUT,   "@asyn($(PORT),$(ADDR),$(TIMEOUT))INITIAL_STATE")
   info(asyn:READBACK, "1")
}

record(ao, "$(P)AoInt32")
{
   field(PINI, "$(PINI)")
   field(DTYP, "asynInt32")
   field(OUT,  "@asyn($(PORT),$(ADDR),$(TIMEOUT))INT32_VALUE")
}

record(ao, "$(P)AoInt32RB")
{
   field(PINI, "$(PINI)")
   field(DTYP, "asynInt32")
   field(OUT,  "@asyn($(PORT),$(ADDR),$(TIMEOUT))INT32_VALUE")
   info(asyn:READBACK,"1")
}

record(ai, "$(P)AiInt32")
{
   field(DTYP, "asynInt32")
   field(INP,  "@asyn($(PORT),$(ADDR),$(TIMEOUT))INT32_VALUE")
   field(SCAN, "$(SCAN)")
}
record(ai, "$(P)AiInt32TS")
{
   field(DTYP, "asynInt32")
   field(INP,  "@asyn($(PORT),$(ADDR),$(TIMEOUT))INT32_VALUE")
   field(SCAN, "$(SCAN2)")
}


record(longout, "$(P)LongoutInt32")
{
   field(PINI, "$(PINI)")
   field(DTYP, "asynInt32")
   field(OUT,  "@asyn($(PORT),$(ADDR),$(TIMEOUT))INT32_VALUE")
}

record(longout, "$(P)LongoutInt32RB")
{
   field(PINI, "$(PINI)")
   field(DTYP, "asynInt32")
   field(OUT,  "@asyn($(PORT),$(ADDR),$(TIMEOUT))INT32_VALUE")
   info(asyn:READBACK,"1")
}

record(longin, "$(P)LonginInt32")
{
   field(DTYP, "asynInt32")
   field(INP,  "@asyn($(PORT),$(ADDR),$(TIMEOUT))INT32_VALUE")
   field(SCAN, "$(SCAN)")
}

record(longin, "$(P)LonginInt32TS")
{
   field(DTYP, "asynInt32")
   field(INP,  "@asyn($(PORT),$(ADDR),$(TIMEOUT))INT32_VALUE")
   field(SCAN, "$(SCAN2)")
}

record(bo, "$(P)BoInt32")
{
   field(PINI, "$(PINI)")
   field(DTYP, "asynInt32")
   field(OUT,  "@asyn($(PORT),$(ADDR),$(TIMEOUT))BINARY_INT32_VALUE")
   field(ZNAM, "Zero")
   field(ONAM, "One")
}

record(bo, "$(P)BoInt32RB")
{
   field(PINI, "$(PINI)")
   field(DTYP, "asynInt32")
   field(OUT,  "@asyn($(PORT),$(ADDR),$(TIMEOUT))BINARY_INT32_VALUE")
   field(ZNAM, "Zero")
   field(ONAM, "One")
   info(asyn:READBACK,"1")
}

record(bi, "$(P)BiInt32")
{
   field(DTYP, "asynInt32")
   field(INP,  "@asyn($(PORT),$(ADDR),$(TIMEOUT))BINARY_INT32_VALUE")
   field(ZNAM, "Zero")
   field(ONAM, "One")
   field(SCAN, "$(SCAN)")
}

record(bi, "$(P)BiInt32TS")
{
   field(DTYP, "asynInt32")
   field(INP,  "@asyn($(PORT),$(ADDR),$(TIMEOUT))BINARY_INT32_VALUE")
   field(ZNAM, "Zero")
   field(ONAM, "One")
   field(SCAN, "$(SCAN2)")
}

record(mbbo, "$(P)MbboInt32")
{
   field(PINI, "$(PINI)")
   field(DTYP, "asynInt32")
   field(OUT,  "@asyn($(PORT),$(ADDR),$(TIMEOUT))MULTIBIT_INT32_VALUE")
   field(ZRST, "State 0")
   field(ZRVL, "0")
   field(ONST, "State 1")
   field(ONVL, "1")
   field(TWST, "State 2")
   field(TWVL, "2")
   field(THST, "State 3")
   field(THVL, "3")
   field(FRST, "State 4")
   field(FRVL, "4")
   field(FVST, "State 5")
   field(FVVL, "5")
}

record(mbbo, "$(P)MbboInt32RB")
{
   field(PINI, "$(PINI)")
   field(DTYP, "asynInt32")
   field(OUT,  "@asyn($(PORT),$(ADDR),$(TIMEOUT))MULTIBIT_INT32_VALUE")
   field(ZRST, "State 0")
   field(ZRVL, "0")
   field(ONST, "State 1")
   field(ONVL, "1")
   field(TWST, "State 2")
   field(TWVL, "2")
   field(THST, "State 3")
   field(THVL, "3")
   field(FRST, "State 4")
   field(FRVL, "4")
   field(FVST, "State 5")
   field(FVVL, "5")
   info(asyn:READBACK,"1")
}

record(mbbi, "$(P)MbbiInt32")
{
   field(DTYP, "asynInt32")
   field(INP,  "@asyn($(PORT),$(ADDR),$(TIMEOUT))MULTIBIT_INT32_VALUE")
   field(ZRST, "State 0")
   field(ZRVL, "0")
   field(ONST, "State 1")
   field(ONVL, "1")
   field(TWST, "State 2")
   field(TWVL, "2")
   field(THST, "State 3")
   field(THVL, "3")
   field(FRST, "State 4")
   field(FRVL, "4")
   field(FVST, "State 5")
   field(FVVL, "5")
   field(SCAN, "$(SCAN)")
}

record(mbbi, "$(P)MbbiInt32TS")
{
   field(DTYP, "asynInt32")
   field(INP,  "@asyn($(PORT),$(ADDR),$(TIMEOUT))MULTIBIT_INT32_VALUE")
   field(ZRST, "State 0")
   field(ZRVL, "0")
   field(ONST, "State 1")
   field(ONVL, "1")
   field(TWST, "State 2")
   field(TWVL, "2")
   field(THST, "State 3")
   field(THVL, "3")
   field(FRST, "State 4")
   field(FRVL, "4")
   field(FVST, "State 5")
   field(FVVL, "5")
   field(SCAN, "$(SCAN2)")
}

2） 使用asynFloat64接口的useasynFloat64.db数据库记录文件：

###################################################################
#  Records that use devAsynFloat64                                #
###################################################################

record(ao, "$(P)AoFloat64")
{
   field(PINI, "$(PINI)")
   field(DTYP, "asynFloat64")
   field(OUT,  "@asyn($(PORT),$(ADDR),$(TIMEOUT))FLOAT64_VALUE")
   field(PREC, "1")
}

record(ao, "$(P)AoFloat64RB")
{
   field(PINI, "$(PINI)")
   field(DTYP, "asynFloat64")
   field(OUT,  "@asyn($(PORT),$(ADDR),$(TIMEOUT))FLOAT64_VALUE")
   field(PREC, "1")
   info(asyn:READBACK,"1")
}

record(ai, "$(P)AiFloat64")
{
   field(DTYP, "asynFloat64")
   field(INP,  "@asyn($(PORT),$(ADDR),$(TIMEOUT))FLOAT64_VALUE")
   field(PREC, "1")
   field(SCAN, "$(SCAN)")
}

record(ai, "$(P)AiFloat64TS")
{
   field(DTYP, "asynFloat64")
   field(INP,  "@asyn($(PORT),$(ADDR),$(TIMEOUT))FLOAT64_VALUE")
   field(PREC, "1")
   field(SCAN, "$(SCAN2)")
}

3） 使用asynUInt32Digital接口的数据库记录文件 useasynUInt32Digital.db：

###################################################################
#  Records that use devAsynUInt32Digital                          #
###################################################################

record(longout, "$(P)LongoutUInt32D")
{
   field(PINI, "$(PINI)")
   field(DTYP, "asynUInt32Digital")
   field(OUT,  "@asynMask($(PORT),$(ADDR),0x000000FF, $(TIMEOUT))UINT32D_VALUE")
}

record(longout, "$(P)LongoutUInt32DRB")
{
   field(PINI, "$(PINI)")
   field(DTYP, "asynUInt32Digital")
   field(OUT,  "@asynMask($(PORT),$(ADDR),0x000000FF, $(TIMEOUT))UINT32D_VALUE")
   info(asyn:READBACK,"1")
}

record(longin, "$(P)LonginUInt32D")
{
   field(DTYP, "asynUInt32Digital")
   field(INP,  "@asynMask($(PORT),$(ADDR),0x000000FFF, $(TIMEOUT))UINT32D_VALUE")
   field(SCAN, "$(SCAN)")
}

record(longin, "$(P)LonginUInt32DTS")
{
   field(DTYP, "asynUInt32Digital")
   field(INP,  "@asynMask($(PORT),$(ADDR),0x000000FFF, $(TIMEOUT))UINT32D_VALUE")
   field(SCAN, "$(SCAN2)")
}

record(bo, "$(P)BoUInt32D")
{
   field(PINI, "$(PINI)")
   field(DTYP, "asynUInt32Digital")
   field(OUT,  "@asynMask($(PORT),$(ADDR),0x1, $(TIMEOUT))BINARY_UINT32D_VALUE")
   field(ZNAM, "Zero")
   field(ONAM, "One")
}

record(bo, "$(P)BoUInt32DRB")
{
   field(PINI, "$(PINI)")
   field(DTYP, "asynUInt32Digital")
   field(OUT,  "@asynMask($(PORT),$(ADDR),0x1, $(TIMEOUT))BINARY_UINT32D_VALUE")
   field(ZNAM, "Zero")
   field(ONAM, "One")
   info(asyn:READBACK,"1")
}

record(bi, "$(P)BiUInt32D")
{
   field(DTYP, "asynUInt32Digital")
   field(INP,  "@asynMask($(PORT),$(ADDR),0x1, $(TIMEOUT))BINARY_UINT32D_VALUE")
   field(ZNAM, "Zero")
   field(ONAM, "One")
   field(SCAN, "$(SCAN)")
}

record(bi, "$(P)BiUInt32DTS")
{
   field(DTYP, "asynUInt32Digital")
   field(INP,  "@asynMask($(PORT),$(ADDR),0x1, $(TIMEOUT))BINARY_UINT32D_VALUE")
   field(ZNAM, "Zero")
   field(ONAM, "One")
   field(SCAN, "$(SCAN2)")
}

record(mbbo, "$(P)MbboUInt32D")
{
   field(PINI, "$(PINI)")
   field(DTYP, "asynUInt32Digital")
   field(ZRST, "State 0")
   field(ZRVL, "0")
   field(ONST, "State 1")
   field(ONVL, "1")
   field(TWST, "State 2")
   field(TWVL, "2")
   field(THST, "State 3")
   field(THVL, "3")
   field(OUT,  "@asynMask($(PORT),$(ADDR),0x3, $(TIMEOUT))MULTIBIT_UINT32D_VALUE")
}

record(mbbo, "$(P)MbboUInt32DRB")
{
   field(PINI, "$(PINI)")
   field(DTYP, "asynUInt32Digital")
   field(OUT,  "@asynMask($(PORT),$(ADDR),0x3, $(TIMEOUT))MULTIBIT_UINT32D_VALUE")
   field(ZRST, "State 0")
   field(ZRVL, "0")
   field(ONST, "State 1")
   field(ONVL, "1")
   field(TWST, "State 2")
   field(TWVL, "2")
   field(THST, "State 3")
   field(THVL, "3")
   info(asyn:READBACK,"1")
}

record(mbbi, "$(P)MbbiUInt32D")
{
   field(DTYP, "asynUInt32Digital")
   field(INP,  "@asynMask($(PORT),$(ADDR),0x3, $(TIMEOUT))MULTIBIT_UINT32D_VALUE")
   field(ZRST, "State 0")
   field(ZRVL, "0")
   field(ONST, "State 1")
   field(ONVL, "1")
   field(TWST, "State 2")
   field(TWVL, "2")
   field(THST, "State 3")
   field(THVL, "3")
   field(SCAN, "$(SCAN)")
}

record(mbbi, "$(P)MbbiUInt32DTS")
{
   field(DTYP, "asynUInt32Digital")
   field(INP,  "@asynMask($(PORT),$(ADDR),0x3, $(TIMEOUT))MULTIBIT_UINT32D_VALUE")
   field(ZRST, "State 0")
   field(ZRVL, "0")
   field(ONST, "State 1")
   field(ONVL, "1")
   field(TWST, "State 2")
   field(TWVL, "2")
   field(THST, "State 3")
   field(THVL, "3")
   field(SCAN, "$(SCAN2)")
}

record(mbboDirect, "$(P)MbboDUInt32D")
{
   field(PINI, "$(PINI)")
   field(DTYP, "asynUInt32Digital")
   field(OUT,  "@asynMask($(PORT),$(ADDR),0x3, $(TIMEOUT))MULTIBIT_UINT32D_VALUE")
}

record(mbboDirect, "$(P)MbboDUInt32DRB")
{
   field(PINI, "$(PINI)")
   field(DTYP, "asynUInt32Digital")
   field(OUT,  "@asynMask($(PORT),$(ADDR),0x3, $(TIMEOUT))MULTIBIT_UINT32D_VALUE")
   info(asyn:READBACK,"1")
}

record(mbbiDirect, "$(P)MbbiDUInt32D")
{
   field(DTYP, "asynUInt32Digital")
   field(INP,  "@asynMask($(PORT),$(ADDR),0x3, $(TIMEOUT))MULTIBIT_UINT32D_VALUE")
   field(SCAN, "$(SCAN)")
}


record(mbbiDirect, "$(P)MbbiDUInt32DTS")
{
   field(DTYP, "asynUInt32Digital")
   field(INP,  "@asynMask($(PORT),$(ADDR),0x3, $(TIMEOUT))MULTIBIT_UINT32D_VALUE")
   field(SCAN, "$(SCAN2)")
}

3） 启动脚本st.cmd如下：

...
ReadbackConfigure("MYPORT", 0)

## Load record instances
# useasynFloat64.db  useasynInt32.db  useasynUInt32Digital.db
dbLoadRecords("db/useasynInt32.db","P=Readback:,PORT=MYPORT,ADDR=0,TIMEOUT=1,SCAN=I/O Intr,SCAN2=1 second,PINI=NO")
dbLoadRecords("db/useasynFloat64.db","P=Readback:,PORT=MYPORT,ADDR=0,TIMEOUT=1,SCAN=I/O Intr,SCAN2=1 second,PINI=NO")
dbLoadRecords("db/useasynUInt32Digital.db","P=Readback:,PORT=MYPORT,ADDR=0,TIMEOUT=1,SCAN=I/O Intr,SCAN2=1 second,PINI=NO")

...

4） 测试界面，可以测试I/O Intr扫描和周期扫描的输入记录之间的差别以及标记了 info(asyn:READBACK,"1")和未标记的输出记录之间的差别：

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