实例程序

以下为CPP源文件代码，工程建立参见《VC指导》
示例1：设备打开和关闭
#include <stdio.h>
#include <windows.h>
#include "driver.h"
void main()
{
DWORD dwErrCde;
ULONG lDevNum;
long lDriverHandle;
lDevNum=0;
dwErrCde = DRV_DeviceOpen( lDevNum,&lDriverHandle);
if ( dwErrCde != SUCCESS )
{
printf("设备打开错误!\n");
return ;
}
else
{
printf("设备打开成功!\n");
printf("设备句柄：%ld\n",lDriverHandle);
}
dwErrCde = DRV_DeviceClose( &lDriverHandle );
if ( dwErrCde != SUCCESS )
{
printf("设备关闭错误!\n");
return ;
}
else
{
printf("设备关闭成功!\n");
}
}
示例2：读取AI单通道采样值
#include <stdio.h>
#include <windows.h>
#include "driver.h"
void main()
{
long DriverHandle;
PT_AIConfig ptAIConfig;
PT_AIVoltageIn ptAIVoltageIn;
float advalue;
DRV_DeviceOpen(0,&DriverHandle); //打开设备
//AI配置
ptAIConfig.DasChan=0;//AI通道0
ptAIConfig.DasGain=0;//Gain Code，+/-5V
DRV_AIConfig(DriverHandle, (LPT_AIConfig)&ptAIConfig);
//读取指定AI通道的电压值
ptAIVoltageIn.chan = 0;//通道0
ptAIVoltageIn.gain = 0;//Gain Code，+/-5V
ptAIVoltageIn.TrigMode = 0; //内部触发
ptAIVoltageIn.voltage = (FLOAT far *)&advalue;//返回电压值
DRV_AIVoltageIn(DriverHandle,(LPT_AIVoltageIn)&ptAIVoltageIn);
printf("AD value=%f!\n",advalue);
DRV_DeviceClose( &DriverHandle ); //关闭设备
}
示例3：单通道AO输出
#include <stdio.h>
#include <windows.h>
#include "driver.h"
void main()
{
long DriverHandle;
PT_AOConfig ptAOConfig;
PT_AOVoltageOut ptAOVoltageOut;
float davalue;
DRV_DeviceOpen(0,&DriverHandle); //打开设备
//AO配置
ptAOConfig.chan=0;//AO通道0
ptAOConfig.RefSrc=0;//内部参考源
ptAOConfig.MaxValue=10;
ptAOConfig.MinValue=0;
DRV_AOConfig(DriverHandle, (LPT_AOConfig)&ptAOConfig);
//电压输出
ptAOVoltageOut.chan = 0;
ptAOVoltageOut.OutputValue=10.0;//所要设置的输出电压值,浮点型数据
DRV_AOVoltageOut(DriverHandle,(LPT_AOVoltageOut)&ptAOVoltageOut);
DRV_DeviceClose(&DriverHandle); //关闭设备
}
示例4：count事件计数
单次采样
#include <stdio.h>
#include <windows.h>
#include <time.h>
#include "driver.h"
void main()
{
long DriverHandle;
ULONG num1=0,num2=0;
int count;
USHORT over=0;
PT_CounterEventStart ptCounterEventStart;
PT_CounterEventRead ptCounterEventRead;
DRV_DeviceOpen(0,&DriverHandle);
ptCounterEventStart.counter=0;
DRV_CounterEventStart(DriverHandle,&ptCounterEventStart);
ptCounterEventRead.counter=0;
ptCounterEventRead.overflow=&over;
ptCounterEventRead.count=&num1;
DRV_CounterEventRead (DriverHandle, (LPT_CounterEventRead)&ptCounterEventRead); DRV_CounterEventRead (DriverHandle, &ptCounterEventRead);
printf("%lu\n",num1);
Sleep(1000);
ptCounterEventRead.counter=0;
ptCounterEventRead.overflow=&over;
ptCounterEventRead.count=&num2;
DRV_CounterEventRead (DriverHandle, (LPT_CounterEventRead)&ptCounterEventRead); DRV_CounterEventRead (DriverHandle, &ptCounterEventRead);
printf("%lu\n",num2);
count=num2-num1;
printf("%d\n",count);
DRV_CounterReset(DriverHandle,0);
DRV_DeviceClose( &DriverHandle );
}。