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# 2.5.4.16 USB_DEVICE_CDC_TRANSFER_HANDLE Type

## C

    typedef uintptr_t USB_DEVICE_CDC_TRANSFER_HANDLE;

## Summary

USB Device CDC Function Driver Transfer Handle Definition

This definition defines a USB Device CDC Function Driver Transfer Handle. A Transfer Handle is owned by the application but its value is modified by the USB_DEVICE_CDC_Write, USB_DEVICE_CDC_Read and the USB_DEVICE_CDC_SerialStateNotificationSend functions. The transfer handle is valid for the life time of the transfer and expires when the transfer related event had occurred.