National Instruments Corporation

Steve Rogers

Darshan K Shah

Greg Richardson

Robert E Dye

Dean A Luick

Jacob Kornerup

Aljosa Vrancic

Biren Shah

Jason King

Matthew C Curtis

Jeffrey L Kodosky

Samson L DeKey

System and method for executing a graphical program on a first computer and providing a user interface of the graphical program on a second computer, where the graphical program includes a plurality of interconnected function icons representing graphical data flow of a function. Information indicating a plurality of graphical programs on the first computer, e.g., a list, may be displayed on the second computer, and user input specifying the graphical program on the first computer received to the second computer, e.g., selecting the graphical program from the list of graphical programs. The graphical program is executed on the first computer, and information describing the user interface of the graphical program is provided to the second computer during execution. The user interface of the graphical program is displayed on the second computer, facilitating interaction between a user of the second computer and the graphical program executing on the first computer.

Graphical programming system with block diagram execution and distributed user interface display

Graphical program execution with distributed block diagram display

A 'timed loop with frames' node may be included in a graphical program. The 'timed loop with frames' node may combine a timed loop with a timed sequence such that the timed sequence is executed at each iteration of the timed loop. The &#x201c;timed loop with frames&#x201d; node may be configured with first execution timing information that controls execution timing for the iterations of the loop. A plurality of graphical code portions may be included in the &#x201c;timed loop with frames&#x201d; such that a sequential order of execution for the graphical code portions is specified. The &#x201c;timed loop with frames&#x201d; node may be configured with second execution timing information that controls execution timing for the graphical code portions executed at each iteration.

Timed loop with sequence frames structure for a graphical program

A system and method for creating a graphical program which accesses registers of a hardware device. In one embodiment, a register access node or primitive may be included in a graphical program, such that when the graphical program is executed on the computer system, the register access node is operable to access (i.e., either read or write) registers of a hardware device in the computer system. The method may comprise first displaying a register access node in the graphical program in response to user input. For example, the user may select the register access node from a palette and drag and drop the register access node onto a window of the graphical program being created. The user may then configure the register access node to access one or more registers of a selected hardware device, e.g., by using a user interface for performing this configuration. In one embodiment, the computer may store a description of the hardware device, wherein the register access node uses the description of the hardware device to access registers of the hardware device during execution of the graphical program. In one embodiment, configuring the register access node may include displaying a list of registers or a list of fields of registers described in the description of the hardware device and receiving user input to select one or more of the registers from the list of registers. The list may also or instead comprise a list of mnemonic names of registers and/or a list of mnemonic names of fields in the registers. The user may thus configure the register access node to access selected registers described in the description of the hardware device.

System and method for accessing registers of a hardware device in a graphical program

A combination structure node is provided by a graphical programming development environment for use in a graphical program, where the combination structure node is operable to perform two or more control flow functions. For example, the combination structure node may be operable to perform two or more of: iteration, looping, conditional branching, sequencing, timed execution, event-driven execution, or other control flow functions. A user may include the combination structure node in a graphical program and associate a graphical code portion with the combination structure node. During execution of the graphical program, the combination structure node is operable to cause the associated graphical code portion to execute according to the two or more control flow functions performed by the combination structure node.

Combination structure nodes for a graphical program

System and method for enabling a program to call into graphical program code via a shared library. A graphical programming system may export a graphical program to a shared library, such as a Windows Dynamic Link Library (DLL), Unix Shared Library, etc. A program, e.g. a text-based program, may then use the shared library to call into the graphical program. Graphical programs or subprograms may have associated inputs or outputs of various data types. When creating a shared library, a functional interface specifying parameterized versions of these inputs and outputs may be specified, either automatically or interactively. A program may then utilize this functional interface to construct an appropriate call into the shared library. A user interface enabling users to specify the mapping of graphical program inputs and outputs onto parameters of the functional interface is described. Multiple graphical programs or subprograms may be exported to a shared library. The shared library may include an entry point function associated with each graphical program or subprogram. When a program calls into the entry point associated with a particular graphical program, the entry point function may manipulate or copy the parameters passed by the calling program into a representation expected by the graphical program.

System and method for exporting a graphical program to a shared library

System and method enabling client computer(s) to connect to a server computer and receive a graphical program user interface panel(s) for providing input to and/or displaying output from the graphical program, thereby comprising a distributed virtual instrumentation system, wherein a block diagram executes on a server computer to perform a measurement or automation function, and the panel(s) is/are displayed on the client computer(s), enabling users to remotely view and/or control the function. The user may specify the server, i.e., by entering a URL into a web browser and may also specify the graphical program desired. The user interface panel may be dynamically updated during execution of the program. The user may interact with the panel on the client computer to provide input to the graphical program executing on the server, and may also request and receive a block diagram for the remote graphical program, e.g., to view and/or remotely edit the program.

Graphical programming system with distributed block diagram execution and front panel display

A computer-based virtual instrumentation system including a host computer and an embedded system or device, wherein graphical programs created using the computer system can be downloaded to the embedded system for execution in a real-time or more deterministic manner. The present invention thus provides a method for automatically generating an embedded application in response to a graphical program created by a user. This provides the user the ability to develop or define instrument functionality using graphical programming techniques, while enabling the resulting program to operate in an embedded real-time system. The invention includes a novel method for configuring the embedded system. During execution of a graphical program in the embedded system, the block diagram portion executes in the embedded system, and the host CPU executes front panel display code to display on the screen the graphical front panel of the graphical program. The embedded system and the host computer exchange data using a front panel protocol to enable this operation. The present invention also includes improved debugging support for graphical programs executing on the embedded system. The host graphical programming system thus provides the user interface for graphical programs executing on the embedded system, essentially acting as the front panel &ldquo;browser&rdquo; for embedded applications. The host LabVIEW can also act as an independent application communicating with embedded LabVIEW through the shared memory. The host graphical programming system further provides a seamless environment in which the user can develop an embedded application using high level graphical programming techniques.

System and method for providing and displaying debugging information of a graphical program on a first computer during execution of the graphical program on a second computer

Growing community of inventors

Austin, TX, United States of America

Steve Rogers