Re: what bus architecture should I choose for my custom DAQ board?

On 13/02/2006 05:54, wicky.zhang wrote:
> Recently, I ordered a FPGA development board of Xilinx (ML403) with a 
> PPC core inside the main FPGA chip, and Linux is ported to it by Xilinx. 
> What i want to do is to design a 8 channel A/D and 8 channel D/A 
> daughter card of the development board and write the comedi driver for 
> the daughter card. I choose 2 parallel interface A/D and 2 parallel D/A 
> chip (all are 16bits) and connect them to the local bus of PPC core, can 
> I write Comedi driver to it? I notice that Comedi driver is mainly for 
> that of PCI bus architecture DAQ cards. Thanks in advance.

There shouldn't be any problem writing a custom Comedi driver for it. 
All the bus-specific hardware access is confined to the individual 
device drivers; the Comedi core does not depend on hardware at all!

As this is a fairly specialized application, you probably want to avoid 
building the full suite of drivers and just build your custom driver and 
the Comedi core.  You can edit the comedi/drivers/Makefile.am file to do 
that (followed by running ./autogen.sh to regenerate and rerun the 
./configure script).

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Received on 2006-02-13Z11:37:18