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Clear FIFO (Clock-Driven Logic)

Last Modified: August 28, 2017

Clears a target-scoped or VI-defined FPGA FIFO.

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reference in

A reference to a FIFO.

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start

A Boolean that specifies whether the node attempts to clear the specified FIFO. Leave this input unwired if you only want to check the status of a previous clear operation.

True The node attempts to clear the specified FIFO. If a clear operation is already in progress, the node does nothing.
False The node does not attempt to clear the FIFO.
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error in

Error conditions that occur before this node runs.

The node responds to this input according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Default: No error

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reference out

A reference to a FIFO.

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done

A Boolean that indicates whether the clear operation is complete.

True No clear operation has happened or the previous clear operation is complete.
False The clear operation started or is currently in progress.
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error out

Error information.

The node produces this output according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Where This Node Can Run:

Desktop OS: none

FPGA: All devices

Web Server: Not supported in VIs that run in a web application


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