The demo "Volt Update" in DAQmx is executed. It is effective in the first time. The output voltage of ao channel coincides with the value I set. However, errors occurred since the second time, and the error is "LINK : fatal error LNK1104:cannot open file D:\... project.exe " unless restarting the computer. The program can be compiled successfully. How to solve this problem?
The code is copied as follow:
#include <stdio.h>
#include "NIDAQmx.h"
#pragma comment(lib,"NIDAQmx.lib")
#define DAQmxErrChk(functionCall) if( DAQmxFailed(error=(functionCall)) ) goto Error; else
int main(void)
{
int error = 0;
TaskHandle taskHandle=0;
char errBuff[2048]={'\0'};
float64 data[1] = {1};
/*********************************************/
// DAQmx Configure Code
/*********************************************/
DAQmxErrChk (DAQmxCreateTask("",&taskHandle));
DAQmxErrChk (DAQmxCreateAOVoltageChan(taskHandle,"Dev5/ao0","",-10.0,10.0,DAQmx_Val_Volts,""));
/*********************************************/
// DAQmx Start Code
/*********************************************/
DAQmxErrChk (DAQmxStartTask(taskHandle));
/*********************************************/
// DAQmx Write Code
/*********************************************/
DAQmxErrChk (DAQmxWriteAnalogF64(taskHandle,1,1,10.0,DAQmx_Val_GroupByChannel,data,NULL,NULL));
DAQmxStopTask(taskHandle);
DAQmxClearTask(taskHandle);
Error:
if( DAQmxFailed(error) )
DAQmxGetExtendedErrorInfo(errBuff,2048);
if( taskHandle!=0 ) {
/*********************************************/
// DAQmx Stop Code
/*********************************************/
DAQmxStopTask(taskHandle);
DAQmxClearTask(taskHandle);
}
if( DAQmxFailed(error) )
printf("DAQmx Error: %s\n",errBuff);
printf("End of program, press Enter key to quit\n");
getchar();
return 0;
}
