Functions of BMS underlying software

According to the Automotive Open System Architecture (AUTOSAR), the BMS underlying software is divided into many common functional blocks to reduce the dependence on hardware devices. It can configure different hardware implementations and has little impact on the application layer software. It needs to be linked to the application layer software through the RET interface. Due to the flexibility requirements of fault diagnosis event management (DEM), fault diagnosis communication management (DCM), functional information management (FIM) and CAN communication reserved interface, it should be configured from the application layer.