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Digital Input and Output
To learn how to create a session and acquire or generate digital data, see Digital Input and Output Workflow.
Before you use digital channels, see Hardware Discovery and Session Setup.
Functions
addDigitalChannel | Add digital channel |
inputSingleScan | Acquire single scan from all input channels |
outputSingleScan | Generate single scan on all output channels |
queueOutputData | Queue data to be output |
startForeground | Start foreground operations |
startBackground | Start background operations |
addClockConnection | Add clock connection |
stop | Stop background operation |
wait | Block MATLAB until background operation completes |
decimalToBinaryVector | Convert decimal value to binary vector |
binaryVectorToDecimal | Convert binary vector value to decimal value |
hexToBinaryVector | Convert hexadecimal value to binary vector |
binaryVectorToHex | Convert binary vector value to hexadecimal |
Events
addlistener | Create event listener |
DataAvailable | Notify when acquired data is available to process |
DataRequired | Notify when additional data is required for output on continuous generation |
ErrorOccurred | Notify when device-related errors occur |
Properties
Topics
Basic Workflow
Transfer digital or logical values in bits via digital lines.
Acquire Non-Clocked Digital Data
Acquire a single scan of digital data from two channels of an NI device.
Generate Non-Clocked Digital Data
This example shows how to write data to two lines on an NI 625
Acquire Digital Data Using an External Clock
Acquire digital data in the foreground using an external scan clock.
More
Acquire Digital Data in Hexadecimal Values
This example shows how to write data using two channels on an NI 6255.
Acquire Digital Data Using a Shared Clock
Share the clock with the analog input subsystem on your device with the digital subsystem.
Acquire Digital Data Using a Counter Output Channel as External Clock
Acquire digital data using a counter output channel to generate clock pulses.
Generate Signals Using Decimal Data Across Multiple Lines
This example shows how to convert decimal data and output to two lines on an NI 6255.
Control Stepper Motor using Digital Outputs
This example shows how to control a stepper motor using digital output ports.
Generate and Acquire Data on Bidirectional Channels
This example shows how to use a bidirectional channel and read and write data using the same two lines on an NI 6255.
Generate Signals on Both Analog and Digital Channels
This example shows how to generate signals when the session contains both analog and digital channels.
