Re: [Armadeus-forum] Data logger application

[Saji P. G. <saj...@ne...>]

Hi,
Can we use DMA in IMX for getting data from DPRAM implemented in FPGA? 

Regards,
Saji

-----Original Message-----
From: Julien Boibessot [mailto:jul...@fr...] 
Sent: Monday, February 01, 2010 4:59 PM
To: arm...@li...
Subject: Re: [Armadeus-forum] Data logger application

Saji Puthenparampil Gopi a écrit :
> Thank you very much.
> Our ADC is 8 bit.
>   
ok, so you get 3 Mbytes/sec
> Is 4K or 8K buffer sufficient in FPGA?
>   
Fabien will confirm if it's possible, but 2 x 4k buffers would be nice.
(-> ~1,3 ms periodic interrupt to get your data)
> We are planning to use 'WUBR-506N' 802.11n device from SparkLan. 
>   
nice beast ;-)
> They provide drivers for Linux which needs to be ported for our board.
>   
If their USB drivers are written correctly you will only need to
recompile them to have them working on APF27.
> Could you please let me know which 802.11g module you used? Any data rate analysis performed on that?
>   
These ones:
http://www.armadeus.com/wiki/index.php?title=USB_to_WiFi_adapter

In most case you get half the announced bandwidth when doing tests: ie
for example 27Mbits/sec for 802.11g. But it also depends on you WLAN
network "quality".

Regards,
Julien

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