How about sending #reset to set the stream back to the start ? Read the paragraph above "lseek" here... http://falsinsoft.blogspot.com.au/2012/11/access-gpio-from-linux-user-space.html
cheers -ben On Wed, Jan 28, 2015 at 8:45 PM, Herbert König <herbertkoe...@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 > _______________________________________________ > Beginners mailing list > Beginners@lists.squeakfoundation.org > http://lists.squeakfoundation.org/mailman/listinfo/beginners >
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