基于单片机与FPGA的波形发生器

Wave generator based on FPGA and SCM

基于单片机与FPGA的波形发生器,核心技术是直接数字频率合成。FPGA集成了固定分频器、单片机通信模块、波形合成器及波形选择等模块,其输出的8位数据通过D/A转换并经功率放大后即得所需波形。单片机控制键盘与显示模块,提供了良好的人机界面。经过设计和电路测试,系统能产生正弦波、三角波和方波等波形,控制灵活,输出波形性能良好。

The basic technique of this waveform generator based on Single Chip Micro Computer and FPGA is DDS. FPGA chip consisted of a frequency divider, single chip communication module, wave synthesizers and a wave-selecting module. The 8-bit output data of FPGA were converted by a D/A and then amplified to get wave shape. Single Chip Micro Computer that controlled the keyboard and display module provided a good humancomputer interface, By designed and circuit testing, the system could generate sine wave, triangular wave and square wave,easy control and high performance.