Abstract: “An embedded system consists of heterogeneous layers including hardware, HAL (Hardware Abstraction Layer), OS kernel and application layer. Interactions between these layers are the software interfaces to be tested in an embedded system. The identified interfaces are important criterion that selects test cases and monitors the test results in order to detect faults and trace their causes. Because embedded systems commonly have slow processor and small memory, embedded software must be more effici”

Keywords: Card Advanced Research Tool (CART), Target board, host system, firmware, Multimedia card (MMC).