private void tmrReadInputs_Tick(object eventSender, System.EventArgs eventArgs) /* Handles tmrReadInputs.Tick */
{
MccDaq.DigitalPortType BitPort;
string PortName, BitName;
tmrReadInputs.Stop();
// read a single bit status from the digital port
// Parameters:
// PortNum :the digital I/O port type (must be
// AUXPORT or FIRSTPORTA for bit read)
// BitNum :the bit to read
// BitValue :the value read from the port
BitPort = DigitalPortType.AuxPort;
if (PortNum > BitPort)
{
BitPort = DigitalPortType.FifthPortA;
}
MccDaq.DigitalLogicState BitValue;
MccDaq.ErrorInfo ULStat = DaqBoard.DBitIn(BitPort, FirstBit, out BitValue);
PortName = BitPort.ToString();
BitName = FirstBit.ToString();
lblBitNum.Text = "The state of " + PortName + " bit " + BitName
+ " is " + BitValue.ToString();
tmrReadInputs.Start();
}
private void frmDigIn_Load(object sender, EventArgs e)
{
string PortName, BitName;
MccDaq.ErrorInfo ULStat;
InitUL();
//determine if digital port exists, its capabilities, etc
PortType = clsDigitalIO.BITIN;
NumPorts = DioProps.FindPortsOfType(DaqBoard, PortType, out ProgAbility,
out PortNum, out NumBits, out FirstBit);
if (!(ProgAbility == clsDigitalIO.PROGBIT))
{
NumPorts = 0;
}
if (NumPorts == 0)
{
lblInstruct.Text = "Board " + DaqBoard.BoardNum.ToString() +
" has no compatible digital ports.";
}
else
{
// if programmable, set direction of bit to input
// configure the first bit for digital input
// Parameters:
// PortNum :the input port
// Direction :sets the port for input or output
Direction = MccDaq.DigitalPortDirection.DigitalIn;
ULStat = DaqBoard.DConfigBit(PortNum, FirstBit, Direction);
PortName = PortNum.ToString();
BitName = FirstBit.ToString();
lblInstruct.Text = "You may change the bit state by applying a TTL high " +
"or a TTL low to the corresponding pin on " + PortName + ", bit " +
BitName + " on board " + DaqBoard.BoardNum.ToString() + ".";
tmrReadInputs.Enabled = true;
}
}
private void tmrReadInputs_Tick(object eventSender, System.EventArgs eventArgs)
{
tmrReadInputs.Stop();
string PortName;
int LastBit;
int BitNum;
MccDaq.DigitalLogicState BitValue;
MccDaq.DigitalPortType BitPort;
BitPort = DigitalPortType.AuxPort;
BitNum = FirstBit;
if (PortNum > BitPort)
{
BitPort = DigitalPortType.FirstPortA;
}
for (int i = 0; i < NumBits; ++i)
{
// read the bits of digital input and display
// Parameters:
// PortNum :the type of port (must be AUXPORT
// or FIRSTPORTA for bit input)
// BitNum :the number of the bit to read from the port
// BitValue :the value read from the port
BitNum = FirstBit + i;
MccDaq.ErrorInfo ULStat = DaqBoard.DBitIn(BitPort, BitNum, out BitValue);
lblShowBitVal[i].Text = Convert.ToInt32(BitValue).ToString("0");
}
PortName = BitPort.ToString();
LastBit = (FirstBit + NumBits) - 1;
lblBitVal.Text = PortName + ", bit " + FirstBit.ToString() +
" - " + LastBit.ToString() + " values:";
tmrReadInputs.Start();
}
