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#ifdef CPU1
GPIO_SetupPinOptions(4, GPIO_OUTPUT, GPIO_ASYNC);
GPIO_SetupPinMux(4,GPIO_MUX_CPU1,1);
#ifdef _LAUNCHXL_F28379D
InitSysPll(XTAL_OSC,IMULT_40,FMULT_0,PLLCLK_BY_2);
#else
InitSysPll(XTAL_OSC, IMULT_20, FMULT_0, PLLCLK_BY_2);
#endif // _LAUNCHXL_F28379D
#endif // CPU1
你好,问一下为什么如上的 ‘_LAUNCHXL_F28379D’‘CPU1’等,找不到它的宏定义,它们是怎么定义呢