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#include<csl_chiphal.h>5509中，这个头文件是干什么的？谢谢！
你好，csl_chiphal.h提供的是一个硬件抽象层接口，主要定义的有芯片的型号和一些特殊寄存器。使用CSL时候，请根据CSL user guide手册说明来使用csl提供的API。
