HuaRui-1 is a low-power, high-performance embedded processor developed by NRIET. The 4 cores MPU with Vector Processing Unit (VPU) can be applied to most field which has massive data to be processed. A set of special vector instructions for butterfly operation of FFT is elaborated in this paper. Test result showed that 1 024 point FFT and DPC based on single core of HuaRui-1 can be accomplished in 6.12 μs and 15.36 μs. It can be used for radar signal processing and electronic countermeasure to meet the real-time requirements.
