PATHHardware Documentation > USB Devices > Mac OS USB DDK API Reference

usbBMRequest Direction Constants



 
    kUSBOut         = 0     /* Data is transfered to the device */

    kUSBIn          = 1     /* Data is transfered to the host */

    kUSBNone        = 2     /* No data is transfered */

    kUSBAnyDirn     = 3     /* Any direction */

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