RE: [microblaze-uclinux] A/D converter and D/A converter

["Shamus McCarthy" <shamusm@xxxxxxxxxxxxxxxxxxxxxx>]

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Hi Yashi,

Thank you for your reply!  Some very good news!

> should be easy.  I assume form following comment, your a/d d/a use
> I2C, no?

Yes, I can order an I2C a/d and d/a.

> they are in ppc tree.  I haven't look at those driver, but ppc
> currently have better xparameter.h support.  if those driver use
> some defines which standalone/microblaze version doesn't have, it
> might be a little bit work, but definitely feasible.

Not sure what this means... does it mean re-synthesize the hardware
.bin file to use the PPC processor instead of the Microblaze
processor?

Or, can the existing mbvanilla-net .bin file be used with some mods? 
I am a novice, but am completely open to suggestions.

> if you use linux i2c framework, it just read/write on a device
> node, which is not defferent from reading/writing files. 

Can you suggest/think of any examples or references that may be
helpful?

Thank you!

- -Shamus McCarthy


- -----Original Message-----
From: owner-microblaze-uclinux@itee.uq.edu.au
[mailto:owner-microblaze-uclinux@itee.uq.edu.au] On Behalf Of Yasushi
SHOJI
Sent: Wednesday, September 08, 2004 7:45 PM
To: microblaze-uclinux@itee.uq.edu.au
Subject: Re: [microblaze-uclinux] A/D converter and D/A converter

Hi Shamus,

I'm not using memec virtex2 but ...

At Wed, 8 Sep 2004 15:59:35 -0600,
Shamus McCarthy wrote:
> 
>  
> I am working on a senior design project using the Insight/Memec
> Virtex2 system board and the P160 Communications module.  I have
> uClinux up and running fine and would now like to add an A/D
> converter and a D/A converter to the setup.  
> 
> 1) Is it feasible to add these two components?  

should be easy.  I assume form following comment, your a/d d/a use
I2C, no?

> 2) There is an I2C port and a SPI port avaiable...would it be a
> good option to try to use these ports for adding the ADC and DAC?

they are in ppc tree.  I haven't look at those driver, but ppc
currently have better xparameter.h support.  if those driver use some
defines which standalone/microblaze version doesn't have, it might be
a little bit work, but definitely feasible.

> 3) How complicated would it be to use uClinux to read/control these
> two components?

if you use linux i2c framework, it just read/write on a device node,
which is not defferent from reading/writing files.

hope this helps,
- --
         yashi
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