I justed tested using the Keil Evaluation board (LPC2138) both the SPI
and the SSP configured as an SPI. On both ports the SSEL line is set
as GPIO. I even have the output of the SSEL pins toggling. Using a
dual channel scope, the MOSI data is correct and within the clock
burst. So far, I see both Perpherals behaving as specified in the
manual. At this point, I'm not using interrupts or the FIFO logic in
the SSP.
Barry
> Barry,
>
> There are already a few postings on this already. SSEL1 needs to be
> pulled up or tied high, and the pin configuration needs to be set
as
> SSEL1 function and not a GPIO.
>
> (Otherwise it just won't clock out any data!)
>
> I believe this is going to be fixed on new LPC2000 variants...
>
> Jane
>
> javida13 wrote:
>
> > The manual states that for the SSEL0 signal, that when SPI is
setup
> > as a Master, this signal can be used as
GPIO.
> >
> > This statement is not in the description of the SSEL1 signal.
I'm
> > configurating the SSP as an SPI port and would like to use SSEL1
as a
> > GPIO pin.
> >
> > Any experience?
> >
> > Barry
> >
> >
> >
> >
> >
> >
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