# we need to wait a bit until the GPIO appears
[ -d "$gpio_path" ] || sleep 1
}
- # set the pin to output with high or low pin value
- { [ "$value" = "0" ] && echo "low" || echo "high"; } >"$gpio_path/direction"
+
+ # direction attribute only exists if the kernel supports changing the
+ # direction of a GPIO
+ if [ -e "${gpio_path}/direction" ]; then
+ # set the pin to output with high or low pin value
+ { [ "$value" = "0" ] && echo "low" || echo "high"; } >"$gpio_path/direction"
+ else
+ { [ "$value" = "0" ] && echo "0" || echo "1"; } >"$gpio_path/value"
+ fi
}
service_triggers()