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MCU-PLUS-SDK-AM243X: 用__get_PSP获取PSP的值,编译不通过

Part Number: MCU-PLUS-SDK-AM243X


代码跑在R5的核中,需要获取PSP的值,所以#include "cmsis_armclang.h",想用里面的__get_PSP函数来获取PSP的值,但是编译不通过,会发生如图的错误, ,该怎么解决?