Hi all,
my program can not stop event eventhough 2 functions have been called
DAQ_Clear(iDevice);
Config_DAQ_Event_Message (iDevice, 0, "", 1, 0, 0, 0, 0, 0, 0, 0, 0);
Anyone can point me if it is board problem or driver or my code.
My operating system is windows2000, tool is VisualC++ ver7.
nidaq32.dll and nidex.dll are created on July15,2004.
I tested 2 identical nidaq-Dio24 borads with the same code and got the same problem.
Below is my code.
Thanks in advance
/* Digital Port A, Line 1 = HIGH
The STBA* STRBB* is tied to interrupt signal
All port A and B are tied to GND through 4.7 Kohm
PA.1 tied to 5 V
*/
#define STRICT
#include <tchar.h>
#include <windows.h>
#include <stdio.h>
#include <string.h>
#include "nidaqex.h"
#include "nidaq.h"
//Prototype function
void CallBack (int handle, int msg, unsigned wParam, unsigned long lParam);
void CleanupNIDAQEvents(short iDevice);
//defined global variable so that callback() can access
i16 iNum = 0;
i16 temp;
bool DAQEventFlag =0;
i16 iStatus2 = 0;
i16 iRetVal = 0;
i16 iDevice = 1;
i16 iPort2 = 1; //port B
i32 iPattern2 = 0;
i16 iIgnoreWarning = 0;
void main (void)
{
i16 iStatus = 0;
i16 iRetVal = 0;
i16 iDevice = 1;
i16 iGroup = 1;
static i16 portList[1] = {0};
static i16 piBuffer[100] = {0};
u32 ulRemain = 100;
i16 iIgnoreWarning = 0;
i16 iYieldOn = 1;
i16 i = 0;
iStatus = Init_DA_Brds (iDevice, &temp); /* Resets the board */
iRetVal = NIDAQErrorHandler(iStatus, "Init_DA_Brds", iIgnoreWarning);
i16 iStatus2 = 0;
i16 iPort2 = 1; //port B
i32 iPattern2 = 0;
iStatus2 = DIG_Prt_Config(iDevice, iPort2, 1, 0);//mode1 input
iRetVal = NIDAQErrorHandler(iStatus2, "DIG_Prt_Config", iIgnoreWarning);
printf(" PortB is configured as input.\n");
/* Sets up so a 1 on digital PartA.1 generates a interrupt */
iStatus = Config_DAQ_Event_Message (iDevice, 1, "DI0", 8, 2, 2, 0, 0, 0, 0, 0, (unsigned long)CallBack);
iRetVal = NIDAQErrorHandler(iStatus, "Config_DAQ_Event_Message", iIgnoreWarning);
/* Read 100 elements from Dig Port 0 (And check for our 1 on line 0) */
iStatus = DIG_SCAN_Setup(iDevice, iGroup, 1, portList, 0);
iRetVal = NIDAQErrorHandler(iStatus, "DIG_SCAN_Setup", iIgnoreWarning);
iStatus = DIG_Block_In(iDevice, iGroup, piBuffer, 1000);
iRetVal = NIDAQErrorHandler(iStatus, "DIG_Block_In", iIgnoreWarning);
iStatus2 = DIG_In_Prt(iDevice, iPort2, &iPattern2);
printf(" The digital pattern on port %d is (DECIMAL) %ld\n", iPort2, iPattern2);
char ckey;
while (TRUE) //stay here forever for event test
{
if (DAQEventFlag)
{
DAQEventFlag = FALSE;
printf("Hit c key to disable callback, other key for continue events \n"); /* Print how many interrupts we saw */
ckey = getchar();
if (ckey == 'c')
{
printf("c key has been hit \n");
i16 iDevice = 1;
CleanupNIDAQEvents(iDevice);
}
}//end of if (DAQEventFlag)
}//end while (TRUE) //stay here forever for interrupt
}//end main
void CallBack (int handle, int msg, unsigned wParam, unsigned long lParam)
{
iStatus2 = DIG_In_Prt(iDevice, iPort2, &iPattern2);
iRetVal = NIDAQErrorHandler(iStatus2, "DIG_In_Prt", iIgnoreWarning);
printf("portB value----> %d \n",iPattern2);
DAQEventFlag = TRUE;
}
void CleanupNIDAQEvents(short iDevice)
{
i16 iStatus = 0,
iRetVal = 0,
ignoreWarning = 0;
DAQ_Clear(iDevice);
printf("\nCleaning up DAQ Event\n");// for testing DAQ brd is really cleaned
/*** CLEAR all DAQ Events! ***/
iStatus = Config_DAQ_Event_Message (1, 0, "",
1, 0, 0, 0, 0, 0, 0, 0, 0);
iRetVal = NIDAQErrorHandler(iStatus, "Config_DAQ_Event_Message", ignoreWarning);
}
