多功能信号发生器的设计与实现

AbstractIn this paper,a multifunctional signal generator based on STM32 is designed.STM32 series single-chip microcomputer is selected as the main control module ofmulti-function signal generator to control the software and hardware operation ofthe whole system and realize the synthesis of sine wave,square wave,trianglewave and other waveforms.The signal generator takes STM32 as the main controlcore of this design,generates waveform data,sends digital signal to DAC,DACturns digital signal into analog signal,then transmits it to op amp,finally op ampoutputs waveform.External access keys and potentiometers,through the exchangeof keys to change the program code to achieve the flexible change of waveformtype and frequency,through the control of potentiometers to achieve theadjustment of amplitude.The LCD is used to display the type,amplitude andfrequency of the current output waveform in real time.In this paper,the operationprinciple of making multifunctional signal generator and the flow outline of somesoftware design are explained in detail.Key words:multifunctional signal generator Digital to analog converterSTM32 single chip microcomputer