readDirection method
Read direction - mraa_gpio_read_dir
Read the GPIO's direction.
Implementation
MraaReturnCode readDirection(
MraaGpioContext dev, MraaGpioDirectionRead gpioDirection) {
final dir = ffi.calloc.allocate<Int32>(1);
final ret = MraaReturnCode.returnCode(_impl.mraa_gpio_read_dir(dev, dir));
gpioDirection.direction = MraaGpioDirection.gpioDirections(dir.value);
return ret;
}