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Forum: FPGA, VHDL & Verilog Real-time data acquisition


Author: Assuero Savio (Company: Student) (assuerosavio)
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What is the best to do data acquisition in real time, is there a 
specific library? Input an analog signal, encode and store its reading, 
ensuring a constant time in the range of the samples. Thanks for the 
help.

Author: Klakx (Guest)
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maybe you need an oscilloscope? you must be more precise, you wont find 
a simple library like in software

Author: Assuero Savio (Company: Student) (assuerosavio)
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Klakx wrote:
> maybe you need an oscilloscope? you must be more precise, you wont find
> a simple library like in software


My work is similar to the oscilloscope, how do I scan the A / D signal 
and store it in fpga's memory? it's possible?

Author: -gb- (Guest)
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Which AD Converter do you use? Which type of interface? Parallel data 
and clock?
It is quite simple, just store the data at a clock edge. Store them in 
block-RAM, in an FIFO, ...

Author: Lothar Miller (lkmiller) (Moderator)
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Assuero S. wrote:
> it's possible?
Yes, indeed.
First you must implement an interface to the DAC,  then you must 
implement some kind of mass storage to memorize that values.

Assuero S. wrote:
>  is there a specific library?
Look for "soft cores" for that specific tasks. Expect prices about 
10-50k each.
If that is too much, then do it on your own. If you encounter problems 
then ask specific questions and supply necessary information (eg 
language,  target device, toolchain... )

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