#include <ansi_c.h>
#include <Dataacq.h>
void main(void)
{
    //定義變量
    int i;

    double pdBuffer[100] = {0};                    //輸出數(shù)據(jù)

    short iStatus = 0;                             //函數(shù)返回值
    short iDevice = 1;                             //設(shè)備ID號(hào)    
    short iNumChans = 1;                         //WFM組中包含的通道數(shù)   
    short piChanVect[1] = {0};                     // WFM組的通道向量
    short iGroup = 1;                              //WFM組號(hào)

    short iChan = 0;                               //通道號(hào)
    unsigned long ulCount = 100;                    //輸出數(shù)據(jù)長(zhǎng)度
    short piBuffer[100] = {0};                       //輸出的short型數(shù)據(jù)
    
    unsigned long ulIterations = 1;                   //循環(huán)模擬輸出次數(shù)
    short iFIFOMode = 0;                          //模擬輸出FIFO模式
     
    double dUpdateRate = 1000.0;                   //輸出速率
    short iUnits = 0;                               //輸出速率單位
    short iUpdateTB = 0;                           //時(shí)間單位
    unsigned long ulUpdateInt = 0;                   //時(shí)間間隔   

    short iWhichClock = 0;                          //時(shí)鐘選擇     
    short iDelayMode = 0;                           //延遲模式

    short iWFMstopped = 0;                         //模擬輸出狀態(tài)
    unsigned long ulItersDone = 0;                    //已完成的模擬輸出循環(huán)數(shù)
    unsigned long ulPtsDone = 0;                     // 當(dāng)前循環(huán)輸出數(shù)據(jù)長(zhǎng)度 
  
    //產(chǎn)生數(shù)據(jù)
    for(i=0;i<5000;i++)
       pdBuffer[i]=15*sin(i*3.1415926/500);
      
    //指定一個(gè)或多個(gè)模擬輸出通道為波形產(chǎn)生組
    iStatus = WFM_Group_Setup(iDevice, iNumChans, piChanVect,iGroup);

    //將采集結(jié)果從double型轉(zhuǎn)換成short型
    iStatus = WFM_Scale(iDevice, iChan, ulCount, 1.0, pdBuffer, piBuffer);

    //為模擬輸出通道指定輸出的整形數(shù)組
    iStatus = WFM_Load(iDevice, iNumChans, piChanVect, piBuffer,
         ulCount, ulIterations, iFIFOMode);

    //由更新頻率獲得更新間隔時(shí)間及其單位
    iStatus = WFM_Rate(dUpdateRate, iUnits, &iUpdateTB,&ulUpdateInt);

    //為模擬輸出通道指定更新頻率或者延遲始終頻率
    iStatus = WFM_ClockRate(iDevice, iGroup, iWhichClock, 
                 iUpdateTB, ulUpdateInt, iDelayMode);

    //向波形產(chǎn)生組中的模擬輸出通道傳輸數(shù)據(jù)
    iStatus = WFM_Group_Control(iDevice, iGroup, 1);

    while ((iWFMstopped == 0) && (iStatus == 0)) {
         //檢查模擬輸出是否完畢
          iStatus = WFM_Check(iDevice, iChan, &iWFMstopped,
                    &ulItersDone, &ulPtsDone);
       }

    //終止向波形產(chǎn)生組中的模擬輸出通道傳輸數(shù)據(jù)
    iStatus = WFM_Group_Control(iDevice, iGroup, 0);

    //向模擬輸出通道輸出0電壓
    iStatus = AO_VWrite(iDevice, iChan, 0.0);
}