![]() ![]() The Digilent WaveForms VIs will throw an error if Digilent WaveForms is still open when you run your code. Note: Before testing or running your LabVIEW code, make sure that WaveForms is not opened. For more information on getting started in LabVIEW, including the installation of the Digilent WaveForms VIs, please view the resources available here: Getting Started with LabVIEW and a Test and Measurement Device. This section of the lab will assume a working knowledge of the LabVIEW environment and basic programming conventions. By taking advantage of LabVIEW’s ability to visualize data, we can see how each step in this process is accomplished. We will be doing this by sampling the signal using the Analog Discovery Studio and displaying it in LabVIEW. One way to take those signals and recover the original message signal is to acquire the signal with the Logic Analyzer from the Analog Discovery Studio in LabVIEW. While these steps are written with the Arduino Uno in mind, you can use any LINX supported microcontroller as shown in the hardware requirements section. Follow the steps below to setup the Arduino Uno for SPI communication as the master device. Now that we have learned about the different lines which make up SPI communication, we will now program the Arduino Uno in LabVIEW. By using a trigger, we are telling the device when to expect data to start coming in. If you don’t have a trigger, you must continuously read the lines as you don’t know when to expect the data. This is the same for reading digital lines. This would result in multiple unnecessary checks. If people didn’t knock on your door when they arrived, you would continuously have to keep checking to see if someone is at the door. The act of knocking is what we listen out for and triggers us to answer it. You can think about it like someone knocking on your door where the knock is the trigger we are waiting for. ![]() By using triggering, we can identify a rising or falling edge of a signal and from this, synchronize the reading of data at the correct time. Triggering will be an important aspect of this section and therefore it is important to understand this concept before getting started.Īs we will be reading the digital lines on the Analog Discovery Studio, we need a way of recognizing when the Arduino Uno is sending data. In this lab, we will be using the Arduino Uno as the master, and we are now going to set up the Analog Discovery Studio as the slave. USB Scopes, Analyzers and Signal Generators. ![]()
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