/*
* public static Task<GPIBDevice> CreateAsync(int address)
* {
* var ret = new GPIBDevice(address);
* return ret.InitializeAsync();
* }
* public virtual async Task<GPIBDevice> InitializeAsync()
* {
* await OpenGPIBDevice();
* return this;
* }
*/
/// <summary>
/// Send a command through KE-488 usb to GPIB converter to device
/// </summary>
/// <param name="sendString"></param>
public async Task SendGPIBString(string sendString)
{
await Task.Run(() =>
{
GPIB.ibwrt(_deviceName, sendString, sendString.Length);
//this causes instrument errors for unknown reasons that don't seem critical
GPIB.gpib_get_globals(out ibsta, out iberr, out ibcnt, out ibcntl);
if ((ibsta & (int)GPIB.ibsta_bits.ERR) != 0)
{
MessageBox.Show("Error in writing the string command to the GPIB instrument.");
//Close();
return;
}
}
).ConfigureAwait(false);
}
public async Task CloseGPIBDevice()
{
await Task.Run(async() =>
{
System.Diagnostics.Debug.WriteLine("closing gpibdevice with addr: " + DevAddress);
await SendGPIBString("*RST;"); //reset the device
await SendGPIBString(":SYST:LOC;"); //switch control back to local
//Offline the GPIB interface
GPIB.ibonl(_deviceName, 0);
GPIB.gpib_get_globals(out ibsta, out iberr, out ibcnt, out ibcntl);
if ((ibsta & (int)GPIB.ibsta_bits.ERR) != 0)
{
MessageBox.Show("Error in closing the GPIB interface for device with address: " + _devAddress);
return;
}
}).ConfigureAwait(false);
}
public async Task <string> ReadGPIBString()
{
return(await Task.Run(() =>
{
System.Diagnostics.Debug.WriteLine("ReadGPIBString");
StringBuilder strBuild = new StringBuilder(600000);
GPIB.ibrd(_deviceName, strBuild, 600000);
if (_devAddress != 14)//ignorant workaround to prevent the KE6485 throwing an error
{
GPIB.gpib_get_globals(out ibsta, out iberr, out ibcnt, out ibcntl);
if ((ibsta & (int)GPIB.ibsta_bits.ERR) != 0)
{
byte lowByte = (byte)(ibsta & 0xff);
byte highByte = (byte)((ibsta >> 8) & 0xff);
MessageBox.Show("Error in reading the response string from the device with address: " + _devAddress);
}
}
return strBuild.ToString();
}).ConfigureAwait(false));
}
public async Task OpenGPIBDevice()
{
await Task.Run(() =>
{
//Initialize device with 0s timeout
_deviceName = GPIB.ibdev(GPIBAddr, _devAddress, 0, 0, 1, 0);
if ((ibsta & (int)GPIB.ibsta_bits.ERR) != 0)
{
MessageBox.Show("Error in initializing GPIB device with address: " + _devAddress);
return;
}
//clear the specific GPIB instruments
GPIB.ibclr(_deviceName);
GPIB.gpib_get_globals(out ibsta, out iberr, out ibcnt, out ibcntl);
if ((ibsta & (int)GPIB.ibsta_bits.ERR) != 0)
{
MessageBox.Show("Error in clearing GPIB device with address: " + _devAddress);
return;
}
}
).ConfigureAwait(false);
}