/** Data direction mask for the Flags field of a CBW, indicating Host-to-Device transfer direction. */
#define COMMAND_DIRECTION_DATA_OUT (0 << 7)
/** Data direction mask for the Flags field of a CBW, indicating Device-to-Host transfer direction. */
#define COMMAND_DIRECTION_DATA_IN (1 << 7)
/** Data direction mask for the Flags field of a CBW, indicating Host-to-Device transfer direction. */
#define COMMAND_DIRECTION_DATA_OUT (0 << 7)
/** Data direction mask for the Flags field of a CBW, indicating Device-to-Host transfer direction. */
#define COMMAND_DIRECTION_DATA_IN (1 << 7)