rebuild 1d array in single 32 bit integer

[chefcommander]

Hi, i have a problem

in my measurement i get permanently measurement data as an 1d arrays. This data goes in a queue, and from there i want to unpack this array in a singel 32 integer word stream and this very very fast, because the measurement data input is up to 50 MHz.

The question is: How can i unpack this 1d array in a single 32 word stream???

THX for answer

there is a picture, where you can see the measurement data in put in this queue and the data output.

[TCPlomp]

The data is allready in a DoubleWord (unsigned) format.

What kind of data-type do you want to store to disk?

If you want to sent the data over a serial connection (TCP/IP) you can use 'Typecast'

You propably want to turn of the 'Prepend Array Size?' boolean on the top of the write to file primitive.

Ton

[chefcommander]

THX for the answer,

at first i don't need to send the data via ethernt.

i only want to unpack the 1d array in a 32 bit integer word by word to delete some bits from each 32 bit word...like in the picture.

here i open this file (this 1 d array and i can easy unpack this array in single words, but it is not possible to do it direkt in the record-programm (last picture)...why??

[chefcommander]

sorry here is the new picture, ( the programm which opens the data)

[MikeS81]

Hi chefcomma...,

instead of transform your data to bool, using the delete from array function and transfer it back, you should use the logical shift function.

Mike

[altenbach]

As Mike already indicated, all you need is a "-3" shift (or scale by 2^-3). On integers, both are identical, so use the one that better documents the code for readability.

You actually only have an array with a single element, so you should leave the "count" unwired to get a scalar output instead. No need to index out later. (top image)

If you want to read the entire array at once, wire a -1 to the count and do the same operation on the entire array. (bottom image)

Simple as that! 🙂

Message Edited by altenbach on 01-06-2009 09:52 AM