/// <summary>
/// 打开串口
/// </summary>
/// <param name="comName"></param>
/// <param name="er"></param>
/// <param name="setting"></param>
/// <returns></returns>
public bool Open(string comName, out string er, string setting = "9600,n,8,1")
{
er = string.Empty;
try
{
if (com != null)
{
com.Dispose();
com = null;
}
int boardNum = System.Convert.ToInt16(comName);
byte primaryAddress = System.Convert.ToByte(setting);
byte secondaryAddress = 0;
com = new NationalInstruments.NI4882.Device(boardNum, primaryAddress, secondaryAddress);
_conStatus = true;
return(true);
}
catch (Exception ex)
{
er = ex.ToString();
return(false);
}
}
public static void CloseDevice()
{
if (bDeviceOpen)
{
device.Dispose();
bDeviceOpen = false;
}
}
public static void SetDAC(int n, double v)
{
Device device = new Device(0, 12, 0);
device.SetEndOnEndOfString = true;
device.SetEndOnWrite = true;
device.Write(String.Format("DAC. {0} {1}", n.ToString(), v.ToString("F4")));
device.Dispose();
}
public static double AverageADC(int n, int samples)
{
Device device = new Device(0, 12, 0);
device.SetEndOnEndOfString = true;
device.SetEndOnWrite = true;
var V = Vector<double>.Build;
var data = V.Dense(samples);
for (int i = 0; i < samples; i++)
{
device.Write("ADC.2");
string response = device.ReadString();
data[i] = Convert.ToDouble(response);
}
device.Dispose();
return data.Average();
}