Boolean Array Scanning

Question

I am trying to create a scanning GUI that scans through an array of buttons (Rows) and then when an Arduino switch is pressed, the button in the array (row) that is highlighted is recorded. After the row is selected, the same thing happens to the Columns Array.
I am having trouble reading the Arduino values at the same time as the buttons highlight.
CLD Certified 2014
Solved!
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Attachments:
StopBooleanProblem.vi ‏257 KB

Answer 1

A few things:
As it is, pressing the Stop button will only stop the bottom loop. The top loop could keep spinning since it only stops when it pulls out a value of 1 from the queue, and this value may never get added. E.g., you run the VI, but don't press the button on the Arduino, and then try to press the Stop button. A simple method it to enqueue a 1 to tell the upper loop to stop.
You do not want to enqueue all the time in the bottom loop. All you're doing is filling up the queue with 0. Since the upper loop has a 1 second timer, you're going to get a whole lot of zeros in the queue since the bottom loop spins so much faster. Thus, enqueue only when you see a 1. Consequently, you will need to wire a timeout value to the dequeue function so that it doesn't sit there forever waiting for a queue value. A small value of, say, 10 msec is more than adequate.
Instead of placing a numeric constant and then using a conversion function to change its datatype to U8, set the datatype of the constant to begin with.
There is a much simpler way to cycle through the array index in terms of moving the True. Hint: modulo function, or in LabVIEW speak, Quotient and Remainder.