Here are the two methods I have tried:
1.1 Set the FPU using the settings on the IDE.
1.2 Use the register to set the FPU.
SCB->CPACR |= ((3UL << 10*2) | (3UL << 11*2));
But these can't let me improve the efficiency of floating point arithmetic.
After asking if the FPU is turned on, use the FPU operation method or the sample project or technical file??
2. How does the DSP work with Kinetis KV3x?? Is there a technical manual for reference?? or sample project??