USBD_CDC_DataTx

Description

Send data on CDC data class interface.

Files

usbd_cdc.h/usbd_cdc.c

Prototype

CPU_INT32U  USBD_CDC_DataTx (CPU_INT08U   class_nbr,
                             CPU_INT08U   data_if_nbr,
                             CPU_INT08U  *p_buf,
                             CPU_INT32U   buf_len,
                             CPU_INT16U   timeout,
                             USBD_ERR    *p_err);

Arguments

class_nbr

CDC instance number.

data_if_nbr

CDC data interface number.

p_buf

Pointer to buffer of data that will be transmitted.

buf_len

Number of octets to transmit.

timeout_ms

Timeout in milliseconds.

p_err

Pointer to variable that will receive the return error code from this function.

USBD_ERR_NONE

USBD_ERR_INVALID_ARG

USBD_ERR_INVALID_CLASS_STATE

USBD_ERR_DEV_INVALID_NBR

USBD_ERR_DEV_INVALID_STATE

USBD_ERR_EP_INVALID_ADDR

USBD_ERR_EP_INVALID_STATE

USBD_ERR_EP_INVALID_TYPE

USBD_ERR_OS_TIMEOUT

USBD_ERR_OS_ABORT

USBD_ERR_OS_FAIL

Returned Value

Numbers of octets transmitted, if no errors.

0, otherwise.

Callers

CDC Subclass drivers.

Notes / Warnings

None.