[Newbies] Read RasPi GPIO

[Michael Rice]

Is there a StandardFileStream>>reset?

Michael

On Wed, Jan 28, 2015 at 7:45 AM, Herbert König <herbertkoenig at gmx.net>
wrote:

> Hi,
>
> I can successfully read a GPIO Pin on the RasPi if I do it like:
> |value|
> dataFile ensureOpen.
> value := dataFile upToEnd.
> dataFile close.
> ^value
>
> dataFile is the /sys/class/gpio/gpioxx/value file that exists after
> exporting gpioxx.
>
> Without the reopening and closing of the file I get '' on subsequent reads
> which means that
> StandartFileStream>>basicNext answers nil.
>
> Is there a way to get the values without having to close and reopen the
> file each time?
>
> Thanks
>
> Herbert
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