Parsing Data for SPS30 Particle Sensor

[Dvlasenko]

Hi all,

I have been trying to parse the incoming data from my SPS30 particle sensor. I can read the data just fine, but I am having trouble with the output format. The hex data values represent the mass concentration, and in the data sheet there is a table that shows what byte represents each particle size. I cannot figure out how to extract the data and output it in a way where it makes sense. Maybe I can just send the raw data into an excel file and then parse it there? I am not sure. Please let me know if i am not being clear.

Thank you!

[billko]

Seems pretty simple.  Your data is an array of bytes.  (It looks like a string to LabVIEW, but isn't that what a string is - an array of bytes?)  So you can split the string into sets of characters (either 2 or 4 character sets as appropriate) and typecast it to whatever data type is appropriate - i.e., U16 or single float.

What you are telling LabVIEW to do is "Look at the 2 character string and interpret the 2 bytes as a U16 instead".

[Dvlasenko]

Hi,

Thank you for your response. How do I split the string into sets of characters? Having trouble with that.

Thanks

[billko · Accepted solution]

Something like this:

[AlexBreizh22]

Thank you for solving this issue. 

Did you have the VI associated ? 

Thanks a lot in advance, 

best regards,