Smithy,

On Sun, 28 Aug 2005 10:17:48, Matthew Smith wrote:



> I *did* remember to set DDRA to 0; I tried turning pullup on for the
> port, but the ADC doesn't seem to be able to pull it back down again.

It is necessary to set DDRA=0; PORTA=0xff to tune up the port A for input data.
Value of inputs of port takes from register PINA. The external storage
mast be off.
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