dsPIC, DCI and debugger...

Hi all!
Since a couple of days I'm stuck in a strange problem concerning
the use of the DCI peripheral in a dsPIC: I use it for reading an
I2S audio streaming coming from an ADC, but the program seems
to be unable to read the RXBuffers registers, unless I activate the
in circuit debugger. When the debugger is on, the program works
as expected, otherwise it always reads as 0. Note that this appends
only for the DCI, other peripherals works as expected, and the
DCI also seems to generate the correct output waveforms (and the
ADC sends correct serial data)...
The program is written in assembly, and the DCI register settings
are about the same used in the Microchip example (in C).
Any clue or hint?!?

Thanks,
Antonio

On 6 Apr, 06:39, "A.D." <isd_...@libero.ix> wrote:
> Hi all!
> Since a couple of days I'm stuck in a strange problem concerning
> the use of the DCI peripheral in a dsPIC: I use it for reading an
> I2S audio streaming coming from an ADC, but the program seems
> to be unable to read the RXBuffers registers, unless I activate the
> in circuit debugger. When the debugger is on, the program works
> as expected, otherwise it always reads as 0. Note that this appends
> only for the DCI, other peripherals works as expected, and the
> DCI also seems to generate the correct output waveforms (and the
> ADC sends correct serial data)...
> The program is written in assembly, and the DCI register settings
> are about the same used in the Microchip example (in C).
> Any clue or hint?!?
>
> Thanks,
> Antonio

The debugger sets I/O pins to digital. You probably need to do this
explicitly in your program, as they will default to analogue input
without the debugger.

Leon