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End of Line tests are brief set of tests intended to evaluate ECU's in order to ensure correct functioning of its intended functionality. As these tests are executed on the production line, available time to perform these tests is limited. On one hand, faster production demands require these tests and its framework to be designed in a time optimized manner. On the other hand, increase in ECU functionality translates to an increase in test's functional coverage, requiring more time. Therefore the time taken to execute the tests reaches a critical point in overall ECU production. Availability of multicore microcontrollers with increase in clock speed can increase the performance of end of line tests, but design challenges e.g. synchronization do not guarantee a linear performance increase. Therefore, design of test execution framework is absolutely critical to increase performance of test execution.

These days in automotive industry, AUTOSAR has been increasingly used as a standard and unified software platform as vehicle electronics have becoming more variety, more performance and more complicated. MCAL is a software driver which belongs to lowest level in AUTOSAR software structure. MCAL directly access the microcontroller hardware and is provided by microcontroller supplier like Infineon to handle microcontroller peripherals. And in cases for special dedicated functions of microcontroller or for special requirements, Complex Device Driver could be used as legacy software instead of MCAL. The paper is structured as follows: First, the SPI requirements for vehicle applications such as chassis will be shown. Then, the current AUTOSAR specification for SPI MCAL will be explained in detail. Next, the sequential SPI communication and the parallel SPI communication with multi-nodes will be discussed.