The F2805xM devices offer different security zones, selectable by the user. Keep in mind that the security zone configuration might affect the operation of the interface to the library. For example, if the memory area where the controller object is placed is secured, then libraries in ROM would not be able to write to this memory; therefore, not updating the controller object properly. For more details, see the security section of the TMS320F2805x Real-Time Microcontrollers Data Sheet.

The libraries in ROM, as well as the RAM, that are pre-allocated for the estimator are in the Z1 section. Make sure that the RAM utilized to place the variables used to interface with the library are accessible by the Z1 security zone.