LabVIEW
differential analog inputs
The real question is "What do you want to do with the data?" Log it? Just show it in a chart? You are already using the DAQmx Read function here. What is your real issue?
Some general comments on your code here:
1. Use a FOR loop to add your channels. It will make your code a lot simpler.
2. Since you are using the Cointinuous Mode, do not use the "samples per channel" input on the DAQmx Timing VI. You are just limiting your buffer size, which could lead to issues.
...uh you have it. Well the loop on the right anyway. Instead of taking your 2D array, and converting it to a dynamic data type, then converting to a 1D array, then converting to a cluster, then unbundling that cluster...just drop a Waveform Graph on your front panel and wire it to the 2D array. It will show the N channels and the N samples. I believe each row is a channel and each column is a sample in that channel. If you don't like that you can change the read to return a 1D array of waveforms which can also be wired to a graph.
Also isn't there continuous sampling examples where you can add channels?
I don't think you can perform creating two tasks, on the same device like you are. Your first Create Task makes the 16 channels (0-7,16-23), then the second create task probably throws an error or just ignores it because the task already exists.
You need to use the Create Task once, for this device adding all the channels at once you want to read. Just combine the two calls into one with "Dev1/ai0:7, Dev1/ai16:23, Dev1/ai32:36, Dev1/ai38:37, Dev1/ai39" as the channels.
