An easy way to do that is a 1 of 8 decoder. Use 3 GPIO's to select
one of the 8 devices, and tie the spi lines to all devices in parallel.
Patience, persistence, truth,
Dr. mike
On Tue, 8 Jul 2008, dsp_kits wrote:
> Hi,
> I have to interface 8 codecs(adc) having one channel each with
> bf533 ....for that I am using Spi interface..now i have to enable them
> one by one and transfer data from them to the memory of dsp kit 533...
>
> question1:
> can anybody suggest how can i enable first one and transfer its
> data,then enable 2nd one and transfer its data through to the 8th one?
>
> question 2:
> May i use pf pins to first enable the codec and then transfer data
> using spi???
>
> If anybody has worked on it or any one has any helping code of spi with
> codec or so do gimme a favour...
>
> Thanks in advance..
>