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Visitor noorqaqos
Visitor
6,697 Views
Registered: ‎12-31-2009

how to connect my vhdl code with DAC of spartan3e fpga

i am working on spartan 3e fpga and my output is 12 bit and i want to convert it to analog output and disply it on osciloscope ,so i want to use DAC of spartan3e , i download the s3esk_picoblaze_dac_control.zip file ,but my problem is how to connect my vhdl code with this file(s3esk_picoblaze_dac_control.zip).  thanks
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3 Replies
Instructor
Instructor
6,689 Views
Registered: ‎08-14-2007

Re: how to connect my vhdl code with DAC of spartan3e fpga

You might want to post this in the PicoBlaze forum, since you'll probably

reach someone with more expertise on the subject, including Ken Chapman.

If I were doing this, I'd dump the Picoblaze design altogether and just write

the SPI logic control in VHDL as well.  However if your data rate is slow enough

you could possibly work it into the Picoblaze example with a little modification

of the assembly code to take the D/A data from an input port rather than the

wave tables.  It looks like the wave tables are being read into scratchpad memory

and then played out in the interrupt routine, to the interrupt service routine

would be the obvious spot to look for making the modifications.

 

HTH,

Gabor

-- Gabor
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Newbie uniqumesh
Newbie
5,036 Views
Registered: ‎05-14-2012

Re: how to connect my vhdl code with DAC of spartan3e fpga

Plz provide ne with the DAC code if possible. Thank You

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Historian
Historian
5,017 Views
Registered: ‎02-25-2008

Re: how to connect my vhdl code with DAC of spartan3e fpga


@uniqumesh wrote:

Plz provide ne with the DAC code if possible. Thank You


Your first post here is "gimme code?" Nice.

----------------------------Yes, I do this for a living.
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