Hi,
it´s always better to switch them to output because open inputs can
cause interrupts.
Don´t forget to disable the interrupts before changing the direction
(in/out) because it can cause interrupts.
Regards
Rolf F.
Sumukh Pathare schrieb:
Configure the unused pins as output to minimize the
power consumption.
See section 9.2.6 of:
http://focus.ti.com/lit/ug/slau049d/slau049d.pdf
-Sumukh
--- "Dr.-Ing. Martin Göttlicher"
<martin.goettlic...@gmx.de> wrote:
Hello and a happy new year,
I using an MSP430F149 and the mspgcc tools for
building a diving computer
doing decompression calculations. The device works
fine most of the time. But
sometimes it shows unpredictable behavior. Since I'm
no hardware expert I'm
not sure if this may be caused by unused/unconnected
port pins. So I would
like to ask the hardware experts on this list what
should be done with unused
port pins?
- Configure them as output pins and let them
unconnected
- Configure them as input pins and connect them to
ground or +3V
...
If several solutions are possible which one is the
best from a power
consumption point of view?
Best regards,
Martin
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