Standard SWS Requirement based Integration testing for classic AUTOSAR modules

In the development of the automotive electronic control unit (ECU), to keep performance at the desired level, what remains constant is to verify, evaluate, and validate electronic control units. Nowadays, Cars have multiple ECUs even in the range of fifty. Software is validated by a tester using a target ECU, Controller Area network (CAN) communication, and some Input/Output simulation techniques. Also, in some applications, a virtual environment is created for testing. In this paper, the method of Integration testing of Automotive Open System Architecture (AUTOSAR) modules is presented with AUTOSAR software specification as its input. This makes standard test cases as SWS remains the same for AUTOSAR standard release. It enables a platform to efficiently test all layers of AUTOSAR base software (BSW) modules after integration. For the demonstration, TriCore micro controller TC377TX from Infineon is used. Same controllers are usually used in the development of automotive ECUs for various applications. Using winIDEA debugger, setup becomes easier to operate for any new person as it supports both debug and flash mode operation. A simplistic approach is presented in this paper to use the setup while testing. Requirement based testing covers all the implemented features in the software, their connections with higher and lower layers in AUTOSAR architecture. Certain test cases require CAN communication for transferring signals to different ECUs and receive information from them. For those test cases, CANoe Vector hardware is used. Testing using debugging methods is covered in the WinIDEA debugger by checking local and Global variables and putting the breakpoints. For writing test cases and maintaining the defect logs, documentation is prepared and tracked. Requirement traceability is maintained with the test cases to find test case for any requirement easily. This system improvises efficiency and simplifies the testing of AUTOSAR based development. Also, paper demonstrates it as a standard process.