Yahoo Groups archive

Lpc2000

Index last updated: 2026-04-28 23:31 UTC

Message

Re: read with SPI

2004-11-28 by Richard

Analog supply pins hooked up correctly?



--- In lpc2000@yahoogroups.com, "domingos_bento" <dasbento@a...> 
wrote:
> 
> Hello,
> yes I tryed to change phase and polarity, but continue same.
> 
> Another thing that happen is that AD to give the double of the 
scale.
> In the datasheet with 0V input would have in hex 0000, midscale 
(2.5V)
>  should have 8000 and to 4.999924V should have FFFF. The results 
that
> I 'm obtain are: 0V input has 0000, 2.5V has FFFF and 4.999924V 
has FFFE.
> 
> thanks
>       Domingos
> 
> --- In lpc2000@yahoogroups.com, FabioDB <fabiodib@e...> wrote:
> > Il giorno gio, 25-11-2004 alle 20:59 +0000, dasbento@a... ha
> > scritto:
> > > 
> > > Hello,
> > > 
> > > I'm using SPI to read data of ADS7807U. My problem is not get 
to read
> > > the last bit, i.e, bit0. How does the SCK work? 
> > 
> > Have you tryed to change phase and polarity (CPOL and CPHA bits 
of SPI
> > Control Register)?
> > 
> > -- 
> > FabioDB <fabiodib@e...>
> > Altraqua

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.