--- In Triffid Hunter <> wrote:
>
> On Fri, 28 Mar 2008, osmicadu wrote:
>
> > Hello,
> >
> > Is there somewhere a manual how to set up the adc converter on this
> > board. Also for the schematic how to connect something to the
> > converter. Can somebody send me the driver for adc because I for some
> > reason can not crosscompile the one I found. It is adc.o I believe.
> > When I setup the adc how will it appear on my board is it like another
> > serial port or something else.
> >
> > Thanks a lot everybody.
>
>
ftp://ftp.embeddedarm.com/ts-arm-sbc/ts-7250-linux/samples/adc_72xx.tar.gz
> has everything you need to access them.
>
> voltage range is 0 to 3.3v.
>
> read the analog input section in
> http://www.cirrus.com/en/pubs/manual/EP93xx_Users_Guide_UM1.pdf - it
will
> tell you what the other available inputs are connected to.
>
Yes, if the OP is talking about the ep9302 onboard adc (originally
intended for a touch screen).
But I think the OP means the optional MAX197 chip (as adc.o is part of
Phil's driver for that chip). To use the MAX197 chip:
* Be sure your TS-7250 board came with it (you can't just plug one in
and have it work)
* Google & D/L the MAX197 data sheet; it's very helpful
* Get Phil McCarl's device driver for the chip from the files area of
the yahoo group. There are detailed README, INSTALL and example files
that will tell you all you need to do to use the driver.
* There are also other workable drivers & userspace utilities in the
yahoo file section too, I think, depending on what sample speed you need.
* Look in the TS-7250 manual & schematic for the ADC pin-outs.
Regards, ........ Charlie
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