Assembly: Quanser.Hardware.Hil (in Quanser.Hardware.Hil.dll)
Syntax
Visual Basic (Declaration) |
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Public Sub ReadDigitalWriteDigital ( _ inputChannels As Integer(), _ outputChannels As Integer(), _ inputBits As SByte(), _ outputBits As SByte() _ ) |
C# |
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public void ReadDigitalWriteDigital( int[] inputChannels, int[] outputChannels, sbyte[] inputBits, sbyte[] outputBits ) |
Visual C++ |
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public: void ReadDigitalWriteDigital( array<int>^ inputChannels, array<int>^ outputChannels, array<signed char>^ inputBits, array<signed char>^ outputBits ) |
JavaScript |
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function readDigitalWriteDigital(inputChannels, outputChannels, inputBits, outputBits); |
Parameters
- inputChannels
- Type: array<
System..::.Int32
>[]()[]
An array containing the numbers of the digital input channels to be read. Channel numbers are zero-based. Thus, channel 0 is the first channel, channel 1 the second channel, etc.
Select a board type to the list for board-specific details: .
- outputChannels
- Type: array<
System..::.Int32
>[]()[]
An array containing the numbers of the digital output channels to be written. Channel numbers are zero-based. Thus, channel 0 is the first channel, channel 1 the second channel, etc.
Select a board type to the list for board-specific details: .
- inputBits
- Type: array<
System..::.SByte
>[]()[]
An array for receiving the binary values read from the digital inputs. Each element in the inputBits array corresponds to the same element in the inputChannels array. Hence, there must be as many elements in the inputBits array as there are channels.
- outputBits
- Type: array<
System..::.SByte
>[]()[]
An array containing the binary values to write to the digital outputs. Each element in the outputBits array corresponds to the same element in the outputChannels array. Hence, there must be as many elements in the outputBits array as there are channels.
Remarks
The ReadDigitalWriteDigital method reads from the specified digital input channels and writes to the specified digital output channels immediately, in a single method call. The write operation occurs immediately following the read operation. Since the read-write operation occurs at the lowest level the read and write occur virtually concurrently. The method does not return until the data has been read and written.
Many cards allow the digital I/O lines to be programmed as inputs or outputs. The digital I/O lines are configured as inputs or outputs using the SetDigitalDirections(array<Int32>[]()[], array<Int32>[]()[]) method. All the channels which will be used as digital inputs or outputs must be configured accordingly using this function. Failure to configure the digital I/O may result in the ReadDigitalWriteDigital(array<Int32>[]()[], array<Int32>[]()[], array<SByte>[]()[], array<SByte>[]()[]) method failing to read or write the digital I/O as expected. |
Examples
C# | Copy Code |
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int [] inputChannels = { 0, 1, 2, 3 }; int [] outputChannels = { 5, 7 }; sbyte [] inputBuffer = new sbyte [inputChannels.Length]; sbyte [] outputBuffer = { 1, 0 }; card.ReadDigitalWriteDigital(inputChannels, outputChannels, inputBuffer, outputBuffer); |
Visual Basic | Copy Code |
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Dim inputChannels() As Integer = {0, 1, 2, 3} Dim outputChannels() As Integer = {5, 7} Dim inputBuffer(inputChannels.Length - 1) As SByte Dim outputBuffer() As SByte = {1, 0} card.ReadDigitalWriteDigital(inputChannels, outputChannels, inputBuffer, outputBuffer) |
Visual C++ | Copy Code |
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array<int>^ inputChannels = { 0, 1, 2, 3 }; array<int>^ outputChannels = { 5, 7 }; array<char>^ inputBuffer = gcnew array<char>(inputChannels->Length); array<char>^ outputBuffer = { 1, 0 }; card->ReadDigitalWriteDigital(inputChannels, outputChannels, inputBuffer, outputBuffer); |
Exceptions
Exception | Condition |
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Quanser.Hardware..::.HilException | If the read or write cannot be performed then an exception is thrown. This situtation typically arises if the board does not support this method. |