https://github.com/contemporaries/example_ai_driver_ioc

EPICS IOC Eample for ai device driver
https://github.com/contemporaries/example_ai_driver_ioc

epics epics-ioc

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EPICS IOC Eample for ai device driver

• Host: GitHub
• URL: https://github.com/contemporaries/example_ai_driver_ioc
• Owner: Contemporaries
• Created: 2024-03-06T07:49:45.000Z (10 months ago)
• Default Branch: main
• Last Pushed: 2024-05-21T14:10:37.000Z (8 months ago)
• Last Synced: 2024-05-21T15:33:56.430Z (8 months ago)
• Topics: epics, epics-ioc
• Language: Makefile
• Homepage: https://maclaurin.eu.org/archives/1709706189565
• Size: 7.81 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# **IOC Dev Notes**

> IOC name: example

## **Create IOC by EPICS tool**

```shell

mkdir example_ioc

cd example_ioc

makeBaseApp.pl -t ioc example

makeBaseApp.pl -i -t ioc example

```

## **Create DB file**

> example.db

```shell

record(ai, "example:ai") {

    field(DESC, "this is a example of ai record")

    field(DTYP, "EXAMPLE_AI")

    field(SCAN, ".1 second")

}

```

### **Makefile**

```makefile

TOP=../..

include $(TOP)/configure/CONFIG

#----------------------------------------

#  ADD MACRO DEFINITIONS AFTER THIS LINE

​

#----------------------------------------------------

# Create and install (or just install) into /db

# databases, templates, substitutions like this

#DB += xxx.db

DB += example.db

​

#----------------------------------------------------

# If .db template is not named *.template add

# _template = 

​

include $(TOP)/configure/RULES

#----------------------------------------

#  ADD RULES AFTER THIS LINE

​

​

```

## **Source code**

### **exampleMain.cpp**

```cpp

/*

 * @Author HuangLi

 * @Email [email protected]

 * @Date 3/5/24

 * @Version 1.0.0

 */

#include 

#include 

#include 

#include 

#include 

​

#include "epicsExit.h"

#include "epicsThread.h"

#include "iocsh.h"

​

int main(int argc,char *argv[])

{

    if(argc>=2) {

        iocsh(argv[1]);

        epicsThreadSleep(.2);

    }

    iocsh(NULL);

    epicsExit(0);

    return(0);

}

​

```

### **DBD**

> example.dbd define device type

```

# Devices

device(ai, INST_IO, EXAMPLE_AI, "EXAMPLE_AI")

```

### **ExampleAI.cpp**

```cpp

/*

 * @Author HuangLi

 * @Email [email protected]

 * @Date 3/5/24

 * @Version 1.0.0

 */

​

#include 

#include 

#include 

#include 

#include "limits"

​

#include "recGbl.h"

#include "dbAccess.h"

​

#include "recSup.h"

#include "devSup.h"

#include "aiRecord.h"

#include "epicsExport.h"

#include 

​

using namespace std;

​

static long init(int *);

​

static long initRecord(aiRecord *pv);

​

static long readAI(aiRecord *pv);

​

struct

{

    long number;

    DEVSUPFUN report;

    long (*init)(int *);

    long (*initRecord)(aiRecord *);

    DEVSUPFUN getIOIntInfo;

    long (*readAI)(aiRecord *);

    DEVSUPFUN specialLinConv;

} EXAMPLE_AI = {

    6,

    NULL,

    init,

    initRecord,

    NULL,

    readAI,

    NULL};

​

epicsExportAddress(dset, EXAMPLE_AI);

​

static long init(int *after)

{

    std::cout << "init" << std::endl;

    return 0;

}

​

static long initRecord(aiRecord *pv)

{

    std::cout << "initRecord" << std::endl;

    pv->udf = FALSE;

    return 0;

}

​

static long readAI(aiRecord *pv)

{

    if (pv->pact)

    {

        epicsFloat64 val = 0;

        srand(time(nullptr));

        int min = 1;

        int max = 100;

        val = min + (max - min) * (rand() / (double)RAND_MAX);

        std::cout << "val: " << val << std::endl;

        pv->val = val;

        pv->udf = FALSE;

    }

    else

    {

        pv->pact = TRUE;

        CALLBACK *pCallback = (CALLBACK *)(calloc(1, sizeof(CALLBACK)));

        callbackRequestProcessCallbackDelayed(pCallback, priorityMedium, pv, 0.1);

    }

    return 2;

}

```

### **Makefile**

```makefile

TOP=../..

​

include $(TOP)/configure/CONFIG

USR_CXXFLAGS += -std=c++11

PROD_IOC = example

DBD += example.dbd

example_DBD += base.dbd ../DBD/example.dbd

SRC_DIRS += ../AI

​

example_SRCS += example_registerRecordDeviceDriver.cpp

example_SRCS += ExampleAI.cpp

example_SRCS_DEFAULT += exampleMain.cpp

example_SRCS_vxWorks += -nil-

example_LIBS += $(EPICS_BASE_IOC_LIBS)

​

​

include $(TOP)/configure/RULES

```

## **Run**

```shell

init

initRecord

init

iocRun: All initialization complete

val: 21.263

epics> val: 21.263

val: 21.263

val: 21.263

val: 21.263

```