Hello,
I'm quite new to DAQmx in CVI, and I've got a problem with counters programming.
I use an USB6259 board and CVI 8.0.
I use the DAQmxCreateCISemiPeriodChan function to create a task to measure semi periods. I would like to connect an external signal to the counter source, but then I've got this error :
NON-FATAL RUN-TIME ERROR: "BuffSemi-Period-Finite.c", line 157, col 9, thread id 0x00000AB8: Function DAQmxStartTask: (return value == -89137 [0xfffea3cf]). Specified route cannot be satisfied, because it requires resources that are currently in use by another route. Property: DAQmx_CI_CtrTimebaseActiveEdge Source Device: Dev1 Source Terminal: 80MHzTimebase Destination Device: Dev1 Destination Terminal: Ctr0Source Required Resources in Use by Source Device: Dev1 Source Terminal: PFI1 Destination Device: Dev1 Destination Terminal: Ctr0Source Task Name: _unnamedTask<0> Status Code: -89137
Here is my code :
/*********************************************/
// DAQmx Configure Code
/*********************************************/
SetWaitCursor(1);
DAQmxErrChk (DAQmxDisconnectTerms ("/Dev1/80MHzTimebase", "/Dev1/Ctr0Source"));
DAQmxErrChk (DAQmxConnectTerms ("/Dev1/PFI1", "/Dev1/Ctr0Source", DAQmx_Val_DoNotInvertPolarity));
DAQmxErrChk (DAQmxCreateTask("",&taskHandle));
DAQmxErrChk (DAQmxCreateCISemiPeriodChan(taskHandle,chan,"",min,max,DAQmx_Val_Ticks,""));
//DAQmxErrChk (DAQmxCfgImplicitTiming(taskHandle,DAQmx_Val_FiniteSamps,samplesToRead));
/*********************************************/
// DAQmx Start Code
/*********************************************/
DAQmxErrChk (DAQmxStartTask(taskHandle));
Is it possible to assign an external signal to counter source when using this function ?
Thank you.
