// VC_2008_USB_QUAD08_AsynchronousReadClear.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
/* Include files */
#include <windows.h>
#include <stdio.h>
#include <conio.h>
#include <string.h>
#include "cbw.h"
#define MAXNUMDEVS 100
void main ()
{
/* Variable Declarations */
int i=0;
int ULStat = 0;
int numberOfDevices = MAXNUMDEVS;
DaqDeviceDescriptor inventory[MAXNUMDEVS];
DaqDeviceDescriptor DeviceDescriptor;
int BoardNum = -1;
float Rev = (float)CURRENTREVNUM;
ULStat = cbDeclareRevision(&Rev);
cbErrHandling(PRINTALL, STOPALL);
printf ("Demonstration of cbConfigScan() in BACKGROUND mode\n\n");
//Ignore InstaCal device discovery
cbIgnoreInstaCal();
//locate USB devices
ULStat = cbGetDaqDeviceInventory(USB_IFC, inventory, &numberOfDevices);
for( i = 0; i < numberOfDevices; i++)
{
DeviceDescriptor = inventory[i];
//Product ID for USB-QUAD08 = 0xCA
//Product IDs can be found in ULProps.txt located in
// C:\Program Files (x86)\Measurement Computing\DAQ
if(DeviceDescriptor.ProductID == 0xCA)
{
BoardNum = i;
ULStat = cbCreateDaqDevice(BoardNum, DeviceDescriptor);
printf("Device Name: %s\n", DeviceDescriptor.ProductName);
break;
}
}
if(BoardNum < 0)
{
printf("USB device not found...press any key to exit\n");
getch();
return;
}
ULStat = cbCConfigScan(BoardNum,
0,
ENCODER|ENCODER_MODE_X1|ENCODER_MODE_BIT_32,
CTR_DEBOUNCE500ns,
CTR_TRIGGER_AFTER_STABLE,
CTR_RISING_EDGE,
CTR_TICK208PT3ns,
0);
if(ULStat != 0)
printf("Error Code %d\n",ULStat);
unsigned long encoderValue;
int clearCounter = 0;
while(!_kbhit())
{
//this loop reads the low half of the buffer then the upper half continuously.
//it uses a NextReadUpper flag so that each half of the buffer is read once
ULStat = cbCIn32(BoardNum,0,&encoderValue);
printf("%d\n",encoderValue);
Sleep(100);
//test clear counter input every 10 seconds
clearCounter++;
if(clearCounter >100)
{
clearCounter = 0;
cbCClear(BoardNum,0);
}
}
cbReleaseDaqDevice(BoardNum);
printf("Completed...press any key to exit\n");
getch();
}