I will be using LabVIEW to make an application that will interface with. To know about serial communication in LabVIEW you can go through tutorial.

I am trying to establish a serial communication between Labview 8.6 and Arduino Duemilanova board via USB. Steven berkoff metamorphosis script free. I read that USB is the same as RS-232 serial communication just that the USB has a built in USB/RS-232 adapter in it. Please correct me if I am wrong.

I tried to establish the communication using Labview's Basic Serial Write and Read vi example however it was not successful. In the String to write box on front panel of labview, do I need to specify a string or a command that is used to program the Arduino board via the Arduino software? Any help will be appreciated. I am new to Labview, so please give as much detail as possible when responding. Code: * Dimmer * by David A. Mellis * * Demonstrates the sending data from the computer to the Arduino board, * in this case to control the brightness of an LED. The data is sent * in individual bytes, each of which ranges from 0 to 255.

Arduino * reads these bytes and uses them to set the brightness of the LED. * * from the labview side, you can use the example icluded in labview distribution labview>>help>>find examples select tab search type 'serial' in keyword field double clicks on serial founded than in le list on the right choose basic serial write and read. Ok now, leave the VISA resource parameter as is, its define the port seting and in this case fit with the setting on arduino side, make a left click on 'string to write' field the select hex display, this permit you to write directly in hex notation, now togle off the switch 'read' we don't need to read nothing back from arduino. Now try to write FF in the 'string to write' field then press RUN button, the white arrow on top left (the single arrow), this should ON at maximum power your led. Mgriebel, Thank you for the code. I was able to look at what you had put together and a similar simple code with the only difference being a method of saving the data. However, I find that I am getting about every other sample returned as a zero or some loss of data as seen in the graph below.

It is not constant, and it seems that I loose the samples for a period of time and then there is a reconnection. Plotting the data straight from the Arduino-15 serial output with Excell produces a perfect sinusoid from my Function Generator, however looking at my labview plot from the same device, I get an intermittent signal, with no change in hardware.

Thanks very much for any advice.

This example demonstrates basic serial features. This example opens one VISA resource and configures one COM port. It then performs a serial port read, a serial port write, or both based on the options (read or write) that the user selects on the front panel. If both are selected, the VI will first write data, then read data, and finally close the VISA session that is opened to the port.

If a read is performed, this VI will wait until the specified number of bytes is received at the port. Only the number of bytes specified will be read.

For more Serial examples please see the related resources or the LabVIEW Example Finder. To navigate to the LabVIEW example finder open LabVIEW and select Help>> Find Examples. The Example Finder window will open, from there you can open Hardware Input and Output >> Serial to find additional Serial examples.

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