dsp通过SPI接口数据采集 sigma-delta ADC采集程序-dsp through the SPI interface, data acquisition sigma-delta ADC acquisition program

AD2902是一款adc芯片，适用于速度要求比较高的系统，本代码开发了FPGA控制AD2902的程序。-AD2902 is a kind of ADC chip.it is a fast speed chip. so it is usually used in FPGA or DSP system.

采用spi接口读取adc数据，存储数据，将数据进行中值滤波处理，最后通过总线接口发送到dsp处理器-spi interface adc sample program with middle filter process.

利用DSP配合FPGA为硬件架构，以DSP为数据处理核心，通过FPGA对USB、ADC和DAC等外围设备进行控制，并可实现频谱分析、数字滤波器等数字信号处理算法。(With DSP and FPGA as the hardware architecture and DSP as the data processing core, the peripheral devices such as USB, ADC and DAC are controlled by FPGA, and the digi