Serial Communication With Labview Tutorial Download

 
Labview Serial PortLabview Serial Read

LabVIEW is a graphical programming tool that is used in the lab to interface with hardware and lab equipment. The graphical LabVIEW program replaces traditional code, which reduces development time by using the pre- made modules, called Virtual Instruments (VIs). LabVIEW has serial VIs that communicate. Programming, and troubleshooting instrumentation systems comprising GPIB, VXI, PXI, Serial. Ethernet, and/or USB interfaces. VISA provides the programming interface between the hardware and development environments such as LabVIEW, LabWindows/CVI, and Measurement Studio for Microsoft Visual. You should have some basic knowledge about LabVIEW, e.g., the “Introduction to LabVIEW” tutorial. This document is available for download. 2.1 Introduction to DAQ - Data Acquisition. The NI-DAQmx Driver software is the layer of software for easily communicating with the.

Table of Contents • • • • • • • • • • • • Here are some building blocks to interface an mbed with LabVIEW, allowing LabVIEW programs to interact with the real world. This could be used for things like: • data acquisition in LabVIEW via sensors connected to mbed • controlling actuators connected to mbed from LabVIEW • LabVIEW programs with hardware-in-the-loop, where sensors and actuators are interfaced with mbed but calculations and control are in LabVIEW We've created two ways for you to interface between LabVIEW and mbed.

• LabVIEW RPC This allows you to directly control the mbed using the RPC. For many applications it wouldn't be necessary to write any custom code for the mbed. • Serial Communication These examples show how data can be transfered between the program running on mbed and your LabVIEW application. LabVIEW Setup To use mbed with LabVIEW, you need to have the NI-VISA drivers installed to give access to the USB serial port.

• - LabVIEW trial version • - NI-VISA drivers for the serial port With LabVIEW and NI-VISA installed, you should be ready to go. LabVIEW RPC We've created a set of vi's that expose a lot of the mbed interface using RPC. The vi's we've created allow you to create and control new objects or control objects that are created in the mbed code. The LabVIEW vi's Here are the vi's that allow you to interface with the RPC and some examples of their use.

Alexb Nebula Programs there. • LabVIEW vi's: - NB: For consistency the name of mbedSerial has been changed to SerialRPC • Examples: • LabVIEW Libraries for versions 8.5 and 8.6. Relinking Files When you download the files (especially the demos) they may not be in the same locations relative to the files they depend on as they were on the computer they were developed on. LabVIEW is very good at relinking files so just okay error messages or reconnect the files according to the locations in which you have saved them. Using the LabVIEW RPC vi's The LabVIEW vi's have been created to mirror the mbed api as closely as possible. They therefore take a similar object oriented approach. We create an mbed object and then using this create objects for each of the inputs and outputs.

The vi's are contained in two folders: • The 'mbed Interface' folder includes all the vi's for creating and controlling inputs and outputs on mbed. • The 'Transport Mechanisms' folder contains the vi's for creating a connection to an mbed and then closing it. We've provided the vi's as a zipped file which you can extract to any where on your computer. To make it a bit easier to access them we've also created a Library which might be a bit easier to develop with as you can drag vi's in from it. Just open the file mbed_LVlibrary from within LabVIEW.

Using the API. Information To use these vi's your mbed needs to be running code which can receive and execute RPC commands.

Information and examples of this, can be found on the page. Compile and run the program for RPC over serial to use the vi's on this page.

• First create an mbed interface by using a transport mechanism. This can be either SerialRPC or HTTPRPC. Download Free Concrete Septic Tank Design Manual Software. • You can now create objects on mbed such as DigitalOut or AnalogIn. Wire up the input of a DigitalOut to the output from mbedSerial • To create an object connect controls or constants to the pin number. Pins are passed as a string eg 'p21' or 'LED1' • If you have an object created on mbed then you can tie to it by passings its name as a string into the existing object name. • You can now execute the methods that are defined in the mbed api. For example you can execute a write block on a DigitalOut to set the value of the pin.