Accessing raspberrypi3b GPIO from (Emteria.os) Android os
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it buids without errors but the app clashes when running.
even wiringPI it just clashes.
W libLightControl.so: QIODevice::write (QFile, "/sys/class/gpio/export"): device not open
W libLightControl.so: QIODevice::write (QFile, "/sys/class/gpio/gpio24/value"): device not open
W libLightControl.so: cannot open "/sys/class/gpio/gpio24/direction"
W libLightControl.so: QIODevice::write (QFile, "/sys/class/gpio/gpio5/value"): device not open
W libLightControl.so: QIODevice::write (QFile, "/sys/class/gpio/gpio24/value"): device not open
W libLightControl.so: QIODevice::write (QFile, "/sys/class/gpio/gpio25/value"): device not open.pliease assist me
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Hi,
Did you check that you have proper access rights ?
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thank you SGaist for the response
i have properly accessed the superuser permission
i no longer get the following messages it only crashes
W libLightControl.so: QIODevice::write (QFile, "/sys/class/gpio/export"): device not open
W libLightControl.so: QIODevice::write (QFile, "/sys/class/gpio/gpio24/value"): device not open
W libLightControl.so: cannot open "/sys/class/gpio/gpio24/direction"
W libLightControl.so: QIODevice::write (QFile, "/sys/class/gpio/gpio5/value"): device not open
W libLightControl.so: QIODevice::write (QFile, "/sys/class/gpio/gpio24/value"): device not open
W libLightControl.so: QIODevice::write (QFile, "/sys/class/gpio/gpio25/value"): device not open. -
What is the stack trace ?
