public GPIB(int ADDR) //构造函数
{
//ADDR为GPIB设备地址
try
{
li = new LangInt(); // Contains all GPIB functions
c = new GpibConstants(); // Contains all GPIB global constants
TIMEOUT = c.T3s;
Dev = li.ibdev(BDINDEX, ADDR, NO_SECONDARY_ADDR, TIMEOUT, EOTMODE, EOSMODE); //Get the device handle
if ((li.ibsta & c.ERR) != 0)
{
throw new System.Exception("Unable to open device!\nibsta:" + li.ibsta + "\nERR:" + c.ERR);
}
li.ibclr(Dev);
if ((li.ibsta & c.ERR) != 0)
{
throw new System.Exception("Unable to clear device!\nibsta:" + li.ibsta + "\nERR:" + c.ERR);
}
}
catch (System.Exception ex)
{
throw new Exception(ex.Message);
}
}
internal override bool Open()
{
if (IsConnected())
{
return(true);
}
try
{
Dev = li.ibdev(BDINDEX, PRIMARY_ADDR_OF_PPS, NO_SECONDARY_ADDR, TIMEOUT, EOTMODE, EOSMODE);
bConnected = ((li.ibsta & c.ERR) == 0);
if (!bConnected)
{
MessageBox.Show("GPIB 接口打开失败");
}
return(bConnected);
}
catch (SystemException ex)
{
MessageBox.Show("GPIB 接口打开失败 " + PRIMARY_ADDR_OF_PPS.ToString() + " " + ex.Source + " " + ex.Message, "GPIBMeasConfig", MessageBoxButtons.OK, MessageBoxIcon.Error);
return(false);
}
}