(1)Please confirm by the sample program of the product at first, that is same as "Cannot initialize".
(2)Are parameter and return code of function normal? Before confirming the validity of data, please confirm that all return code of the using function are 0.
(3)Are the boards setting and wiring correct?
(4)What condition did the abnormity of data occurs in? When the data is abnormal, please determine as exact as possible which function and what parameters result in the phenomenon.