| ..\CMSIS\core_cm4.h(112): warning: #1215-D: #warning directive: "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)" #warning "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)" |
解决方法：添加 __FPU_PRESENT,__FPU_USED