What does BSP mean in embedded system?

BSP refers to the card support package, whose main function is to provide a set of software library and driver interface (API) for a specific hardware platform, so that application software can interact with hardware and realize the management and control of hardware resources. Generally speaking, BSP is the product of co-design of embedded system software and hardware. An excellent BSP can greatly shorten the development time, reduce the workload of development and debugging, and improve the stability and reliability of embedded applications.

BSP plays an important role in embedded design. Making BSP is an important part of software and hardware co-development, that is, after the hardware platform is determined, BSP developers need to analyze and divide the hardware platform, determine the API interface that interacts with the hardware, design drivers, and realize hardware support. For embedded developers, making excellent BSP requires both hardware knowledge and software embedded program development experience.

There are two common forms of developing BSP: one is independent development, and the other is mature BSP provided by BSP manufacturers. Generally speaking, mature BSP can greatly reduce the workload of BSP developers and ensure the efficiency of development and debugging. Using mature BSP can also ensure the stability and performance of the software. However, it is found that some hardware platforms and application scenarios need to develop their own personalized BSP, and customized BSP can better balance the performance indicators of the system and improve the efficiency and running effect of the software.