我是使用如下函数获取的：
linkDB_GetInfo()
uint8 linkDB_GetInfo ( uint16 connectionHandle,
linkDBInfo_t * pInfo
)
Get information about a link
Copies all of the link information into pInfo. Uses the connection handle to search the link database.
Parameters
connectionHandle controller link connection handle.
pInfo output parameter to copy the link information
Returns
SUCCESS
FAILURE connection wasn't found
