Description

Determine if CDC instance is connected.

Files

usbd_cdc.h/usbd_cdc.c

Prototype

CPU_BOOLEAN  USBD_CDC_IsConn (CPU_INT08U  class_nbr)

Arguments

class_nbr

CDC instance number.

Returned Value

DEF_OK, if CDC instance is connected and device is not in suspended state.

DEF_FAIL, otherwise.

Callers

• CDC Subclass drivers
• Application

Notes / Warnings

1. If the USBD_CDC_IsConn() returns DEF_OK, than the CDC instance is ready for management, notification, read and write operations.