Automotive electronic products are embedded systems that combine hardware and software. In order to save resources and shorten the product development cycle, it is generally necessary to adopt a program for simultaneous development of software and hardware.
1. Development process of automotive electronic products Automotive electronic products are embedded systems that combine hardware and software. In order to save resources and shorten the product development cycle, it is generally necessary to adopt a program for simultaneous development of software and hardware. The development tools of automotive electronic products provide good support for the simultaneous development and debugging of software and hardware. The software development of automotive electronic products is divided into steps such as functional description, software design, code generation, and advanced debugging under the operating system environment. The hardware development of automotive electronic products is divided into hardware description, hardware design, hardware debugging and other steps. After the software design is completed, the verification on the virtual ECU platform is completed by using the corresponding tools. When the hardware design is completed, the hardware and software integration debugging is performed together with the hardware. Through this development method, shorten the time to market.
Software and hardware parallel development plan
2. Automotive electronic product software development process Automotive electronic product software development process is a "V" shaped development process. The "V" shaped development process is divided into five stages, namely functional design, prototype simulation, code generation, hardware in loop simulation-HIL, calibration.
The main tool used in the functional design phase is MATLAB. Through the use of Simulink, Stateflow and other tools provided by MATLAB, complete the tasks of control scheme design, function module design, control algorithm design, etc., and carry out preliminary simulation work. The main tool used in the prototype simulation phase is dSPACE. Use the rapid control prototype-RCP tool provided by dSPACE to complete the offline simulation work. Before starting this stage, you need to use Real TIme Workshop, Targetlink and other tools to complete the conversion of the code generated by Simulink and Stateflow to standard C code.
3. During the process of converting to standard C code in the process of generating code for automotive electronic products, an embedded real-time operating system conforming to the OSEK specification can be added as required. The main tool used in the code production phase is CodeWarrior. Through the use of compilers, debuggers and other tools provided by CodeWarrior, the conversion from standard C code to product code on the target hardware platform is completed. The following figure shows the code generation process of automotive electronics.
Car electronic product code generation process
4. The division of automotive electronic systems Automotive electronic products can be divided into two categories: 1. Automotive electronic control devices, including powertrain control, chassis and body electronic control, comfort and anti-theft systems. 2. On-board car electronic devices, including car information systems (on-board computers), navigation systems, car audio-visual entertainment systems, on-board communication systems, on-board networks, etc.
The following figure shows a schematic diagram of the division of automotive electronic systems.
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