Trouble when using the FPGA to record data on PDM

Hello world

I encounter something strange with the use of FPGAS to save data to the disk. I use 4 channels and allows saving data PDM. I use 4 different graphs to observe each channel and no bad thing. But when I check the data stored in PDM, they are not saved in the order that they are supposed to be. Each column in the PDM should represent 1 signla of a channel, but the result shows that the data seems to fill a single column, then another. I do not understand how it becomes like this. I have attached a few photos for your information.

The data of the FIFO.read must be 1 d table, right? So when it passes through the form 'table' in my VI, it should become a 2D of the 4 column table. Each column represents the data for each channel. I don't see any problem with this Vi. Why PDM data are not saved in the right direction?

Thank you

In my opinion, that you simply return your dimension sizes.  The number of rows should be 500 and your number of columns must be 4.

Tags: NI Software

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