as of my understanding the hardware object is a kind of buffer used to store the can data in the Can Controller and in the Can Driver will divide data and store in to Hardware transmit handle (HTH) and Hardware receive Handel (HRT). in CANIF will have buffer to refer HTH and HRH and these called as mailbox.
Module name buffer name Can Controller - Hardware object Can Driver - HTH ,HRH CANIF - Mailbox
please correct me if i'am wrong.
From AUTOSAR_SWS_CANDriver:
Hardware Object: A CAN hardware object is defined as a PDU buffer inside the CAN RAM of the CAN hardware unit / CAN controller. A Hardware Object is defined as L-PDU buffer inside the CAN RAM of the CAN Hardware Unit.
So basically a hardware object is a mailbox. In simplest way, each HRH and HTH maps to exactly on hardware object/ mailbox. However, if SW filtering or pooling is used, this can be different.
