使用AVRStudio4编写的ATMega单片机控制2片DDS芯片AD9832同时进行频率输出的程序，通过UART通信接收频率信号的控制字。在实际硬件中将两路信号叠加。-Use AVRStudio4 written ATMega chip control 2 AD9832 DDS chip frequency output of the program at the same time, the frequency signal received via the UART communicati