Lpc2000

The data sheet says I can read IOPIN to get the pin
states regardless of direction and mode.  I'm trying
to read the SSEL line (P0.7) when I have it configured
for the SPI as a slave device.  The value returned
does not reflect the value of the SSEL line.  I have
no problem reading P0.9, but it is configured as a
gpio line.  Can you really read the status of the line
through IOPIN when the line is configured for a
function other than gpio?

Thanks

Jay

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Hi Jay,

there was a thread long ago dealing with a similar issue, it starts
with message #1672.
According to that thread, the I/O pins can only be read while
configured as I/O. As soon as they are configured with a special
function (e.g. SSEL), this seems not to work any more.

hth, Bob

--- In lpc2000@yahoogroups.com, Jay Prunty <jay_pni@y...> wrote:

> The data sheet says I can read IOPIN to get the pin
> states regardless of direction and mode.  I'm trying
> to read the SSEL line (P0.7) when I have it configured
> for the SPI as a slave device.  The value returned
> does not reflect the value of the SSEL line.  I have
> no problem reading P0.9, but it is configured as a
> gpio line.  Can you really read the status of the line
> through IOPIN when the line is configured for a
> function other than gpio?
> 
> Thanks
> 
> Jay
> 
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> Do You Yahoo!?
> Tired of spam?  Yahoo! Mail has the best spam protection around 
> http://mail.yahoo.com