Generating a single channel digital waveform for PXI-6259 with fixed frequency

[sxs707]

Hi,

I have problem like this: Now I use LabWindows/CVI 8.0, NI PXI-6259, I want to generate one output on digital port0/line0 continuous. And I use "ai/sampleclock" as the sample clock source. But when I run the program there is no waveform at all on prot0/line0. What is the matter?

Thanks very much.

Part of the code is :

                  uInt32      j,mask=1;
	         uInt8       *data=NULL;

                  DAQmxErrChk (DAQmxCreateTask("",&taskHandle));
		DAQmxErrChk (DAQmxCreateDOChan(taskHandle,"Dev1/port0/line0","",DAQmx_Val_ChanPerLine));
		
                  DAQmxErrChk (DAQmxCfgSampClkTiming(taskHandle,"ai/sampleclock",10000.0,DAQmx_Val_Rising,DAQmx_Val_ContSamps,1000));

		data=malloc(1000*sizeof(uInt8));

		for(j=0;j<1000;j++)
		     data[j] = (uInt8)((j&mask)/mask%256);

		/*********************************************/
		// DAQmx Write Code
		/*********************************************/
		DAQmxErrChk (DAQmxWriteDigitalLines(taskHandle,1000,0,10.0,DAQmx_Val_GroupByChannel,data,NULL,NULL));

		/*********************************************/
		// DAQmx Start Code
		/*********************************************/
		DAQmxErrChk (DAQmxStartTask(taskHandle));

[xuanden]

Hi:

    I met the same problem，but get no answer！！！

waiting someone to give a solution！