Waveform generation continues in C/C++, application example

I am looking for one or more examples of analog output in which a waveform is generated on the fly.  for comparison, all of the examples with NOR-DAQmx constantly shipping and way repeated output data; I would like to be able to edit the output values.  non-renegeration may be the Member of (non-obvious) phrase that I'm missing in my research.  suggestions, please?

This seems to be what I'm looking for:

http://zone.NI.com/DevZone/CDA/EPD/p/ID/4872

only in c / c++ instead of labview.

Hi David,

This example should be useful - this looks like what you want to do.

DAQmx - continually generate tension - no regeneration - LabWindows/CVI

The part of the acquisition of data is:

Configure

DAQmxCreateTask("",&taskHandle);

DAQmxCreateAOVoltageChan(taskHandle,chan,"",min,max,DAQmx_Val_Volts,);

DAQmxSetWriteAttribute (taskHandle, DAQmx_Write_RegenMode, DAQmx_Val_DoNotAllowRegen);
DAQmxCfgSampClkTiming (taskHandle",", rate, DAQmx_Val_Rising, DAQmx_Val_ContSamps, 1000);

Write data

DAQmxWriteAnalogF64(taskHandle,bufferSize,0,10.0,DAQmx_Val_GroupByChannel,data,&written,);

Start the task

DAQmxStartTask (taskHandle));

Write data continuously in a loop

so that {(gRunning)
DAQmxWriteAnalogF64(taskHandle,bufferSize,0,10.0,DAQmx_Val_GroupByChannel,data,&written,);
}

Clear task when finished

DAQmxClearTask (taskHandle);

Data written on your task must follow the pace it's be clocked what you receive a buffer overflow error (i.e. the data array must be large enough so that you write enough data by loop iteration).  Writing DAQmx is a blocking call, so if you try to write more data space available in your loop output buffer will wait here until space becomes available and he finishes his writing or the specified timeout is reached.

Best regards

Tags: NI Hardware

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    at org.apache.catalina.manager.ManagerServlet.start (ManagerServlet.java:1256)

    at org.apache.catalina.manager.HTMLManagerServlet.start (HTMLManagerServlet.java:714)

    at org.apache.catalina.manager.HTMLManagerServlet.doPost (HTMLManagerServlet.java:219)

    at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)

    at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

    at org.apache.catalina.filters.CsrfPreventionFilter.doFilter(CsrfPreventionFilter.java:212)

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

    at org.apache.catalina.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:108)

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)

    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)

    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:611)

    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)

    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)

    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)

    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)

    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)

    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)

    to org.apache.coyote.AbstractProtocol$ AbstractConnectionHandler.process (AbstractProtocol.java:589)

    to org.apache.tomcat.util.net.JIoEndpoint$ SocketProcessor.run (JIoEndpoint.java:312)

    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

    to java.util.concurrent.ThreadPoolExecutor$ Worker.run (ThreadPoolExecutor.java:615)

    at java.lang.Thread.run(Thread.java:722)

    Caused by: java.lang.ExceptionInInitializerError

    at sun.reflect.NativeConstructorAccessorImpl.newInstance0 (Native Method)

    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)

    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)

    at java.lang.reflect.Constructor.newInstance(Constructor.java:525)

    at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:100)

    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:61)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:877)

    ... more than 46

    Caused by: java.lang.NumberFormatException: for input string: "@casCacheMultiCastGroupPort @".

    at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)

    at java.lang.Integer.parseInt(Integer.java:492)

    in java.lang.Integer. < init > (Integer.java:677)

    at net.sf.ehcache.distribution.RMICacheManagerPeerProviderFactory.createAutomaticallyConfiguredCachePeerProvider(RMICacheManagerPeerProviderFactory.java:115)

    at net.sf.ehcache.distribution.RMICacheManagerPeerProviderFactory.createCachePeerProvider(RMICacheManagerPeerProviderFactory.java:61)

    at net.sf.ehcache.config.ConfigurationHelper.createCachePeerProviders(ConfigurationHelper.java:283)

    at net.sf.ehcache.CacheManager.configure(CacheManager.java:443)

    at net.sf.ehcache.CacheManager.init(CacheManager.java:302)

    to net.sf.ehcache.CacheManager. < init > (CacheManager.java:234)

    at com.fatwire.cache.ehcache.EhCacheObjectCache._initCache(EhCacheObjectCache.java:730)

    at com.fatwire.cache.ehcache.EhCacheObjectCache.start(EhCacheObjectCache.java:564)

    to com.fatwire.wem.sso.cas.cache.SessionMappingStorage. < init > (SessionMappingStorage.java:48)

    to com.fatwire.wem.sso.cas.listener.CASListener. < clinit > (CASListener.java:15)

    ... more than 53

    Mar 11, Journal of org.apache.catalina.core.ApplicationContext 2014 11:50:07

    Information: Root WebApplicationContext closing spring

    Mar 11, Journal of org.apache.catalina.core.ApplicationContext 2014 12:08:21

    INFO: Initializing spring root WebApplicationContext

    Mar 11, 2014 12:08:21 org.apache.catalina.core.StandardContext listenerStart

    GRAVE: Context Exception initialization instance of listener class org.springframework.web.context.ContextLoaderListener event sending

    org.springframework.beans.factory.BeanCreationException: error creating bean with name 'ssolistener' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: instantiation of bean failed; nested exception is java.lang.ExceptionInInitializerError

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:883)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:839)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:440)

    to org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$ 1.run(AbstractAutowireCapableBeanFactory.java:409)

    at java.security.AccessController.doPrivileged (Native Method)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)

    to org.springframework.beans.factory.support.AbstractBeanFactory$ 1.getObject(AbstractBeanFactory.java:264)

    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)

    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)

    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)

    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)

    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:429)

    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:728)

    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:380)

    at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:255)

    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:199)

    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:45)

    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4939)

    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5434)

    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)

    at org.apache.catalina.manager.ManagerServlet.start (ManagerServlet.java:1256)

    at org.apache.catalina.manager.HTMLManagerServlet.start (HTMLManagerServlet.java:714)

    at org.apache.catalina.manager.HTMLManagerServlet.doPost (HTMLManagerServlet.java:219)

    at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)

    at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

    at org.apache.catalina.filters.CsrfPreventionFilter.doFilter(CsrfPreventionFilter.java:212)

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

    at org.apache.catalina.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:108)

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)

    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)

    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:611)

    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)

    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)

    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)

    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)

    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)

    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)

    to org.apache.coyote.AbstractProtocol$ AbstractConnectionHandler.process (AbstractProtocol.java:589)

    to org.apache.tomcat.util.net.JIoEndpoint$ SocketProcessor.run (JIoEndpoint.java:310)

    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

    to java.util.concurrent.ThreadPoolExecutor$ Worker.run (ThreadPoolExecutor.java:615)

    at java.lang.Thread.run(Thread.java:722)

    Caused by: java.lang.ExceptionInInitializerError

    at sun.reflect.NativeConstructorAccessorImpl.newInstance0 (Native Method)

    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)

    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)

    at java.lang.reflect.Constructor.newInstance(Constructor.java:525)

    at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:100)

    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:61)

    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:877)

    ... more than 46

    Caused by: java.lang.NumberFormatException: for input string: "@casCacheMultiCastGroupPort @".

    at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)

    at java.lang.Integer.parseInt(Integer.java:492)

    in java.lang.Integer. < init > (Integer.java:677)

    at net.sf.ehcache.distribution.RMICacheManagerPeerProviderFactory.createAutomaticallyConfiguredCachePeerProvider(RMICacheManagerPeerProviderFactory.java:115)

    at net.sf.ehcache.distribution.RMICacheManagerPeerProviderFactory.createCachePeerProvider(RMICacheManagerPeerProviderFactory.java:61)

    at net.sf.ehcache.config.ConfigurationHelper.createCachePeerProviders(ConfigurationHelper.java:283)

    at net.sf.ehcache.CacheManager.configure(CacheManager.java:443)

    at net.sf.ehcache.CacheManager.init(CacheManager.java:302)

    to net.sf.ehcache.CacheManager. < init > (CacheManager.java:234)

    at com.fatwire.cache.ehcache.EhCacheObjectCache._initCache(EhCacheObjectCache.java:730)

    at com.fatwire.cache.ehcache.EhCacheObjectCache.start(EhCacheObjectCache.java:564)

    to com.fatwire.wem.sso.cas.cache.SessionMappingStorage. < init > (SessionMappingStorage.java:48)

    to com.fatwire.wem.sso.cas.listener.CASListener. < clinit > (CASListener.java:15)

    ... more than 53

    Mar 11, Journal of org.apache.catalina.core.ApplicationContext 2014 12:08:21

    Information: Root WebApplicationContext closing spring

    I solved it to change

    articles\src\main\webapp\WEB-INF\classes\cas-cache. XML

    file in this part:

    <>

    Class = "net. SF. Ehcache.distribution.RMICacheManagerPeerProviderFactory ".

    Properties = "peerDiscovery Auto is, multicastGroupAddress is 230.0.0.0,

    multicastGroupPort=@casCacheMultiCastGroupPort @, timeToLive = 0 "/ >"

    change of attribute multicastGroupPort=@casCacheMultiCastGroupPort @

    with your JumpStart Kit port (my port was 9180)

    multicastGroupPort = 9180

  • Printing is enabled in the application example

    Hi guys,.

    I noticed that we can print in the sample Application without having to install a print server. As you know there is word "Print" in the top right corner.
    How can I do this task?

    -I spent a long time trying to install BI, but I couldn't. RCU gives me error, the version of your database should be greater than 10. or 11 ut g. I already use 11g xe. Therefore, the configuration of BI fails... Sorry, if I turned...

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    This link 'Print' in the sample application will take you to the mode printer friendly and don't require any print server advanced as BI
    http://docs.Oracle.com/CD/E23903_01/doc/doc.41/e21674/ui_print_pg.htm#CBBDDFGI

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    http://dbswh.webhop.NET/dbswh/f?p=blog:Home:0

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