Description
Add a data interface class to CDC.
Files
usbd_cdc.h/usbd_cdc.c
Prototype
Arguments
class_nbr
CDC instance number.
isoc_en
Data interface isochronous enable.
DEF_ENABLED, Data interface uses isochronous endpoints.
DEF_DISABLED, Data interface uses bulk endpoints.
protocol
Data interface protocol code:
| Data interface protocol code | Description |
|---|---|
USBD_CDC_DATA_PROTOCOL_NONE | No class specific protocol required. |
USBD_CDC_DATA_PROTOCOL_NTB | Network Transfer Block. |
USBD_CDC_DATA_PROTOCOL_PHY | Physical interface protocol for ISDN BRI. |
USBD_CDC_DATA_PROTOCOL_HDLC | HDLC. |
USBD_CDC_DATA_PROTOCOL_TRANS | Transparent. |
USBD_CDC_DATA_PROTOCOL_Q921M | Management protocol for Q.921 data link protocol. |
USBD_CDC_DATA_PROTOCOL_Q921 | Data link protocol for Q.921. |
USBD_CDC_DATA_PROTOCOL_Q921TM | TEI-multiplexor for Q.921 data link protocol |
USBD_CDC_DATA_PROTOCOL_COMPRESS | Data compression procedures. |
USBD_CDC_DATA_PROTOCOL_Q9131 | Euro-ISDN protocol control. |
USBD_CDC_DATA_PROTOCOL_V24 | V.24 rate adaptation to ISDN. |
USBD_CDC_DATA_PROTOCOL_CAPI | CAPI Commands. |
USBD_CDC_DATA_PROTOCOL_HOST | Host based driver. |
USBD_CDC_DATA_PROTOCOL_CDC | The protocol(s) are described using a Protocol Unit Function Communication Class Interface. |
USBD_CDC_DATA_PROTOCOL_VENDOR | Vendor-specific. |
CDC data interface class protocol codes are defined in the Universal Serial Bus Class Definitions for Communication Devices Revision 2.1 Table 7.
p_err
Pointer to variable that will receive the return error code from this function.
USBD_ERR_NONE
USBD_ERR_ALLOC
USBD_ERR_INVALID_ARG
Returned Value
Data interface number, if no errors.
USBD_CDC_DATA_IF_NBR_NONE, otherwise.
Callers
CDC Subclass drivers.
Notes / Warnings
None.