#warning “Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)“
..\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
·
| ..\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

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