说明：该代码是关于dsPIC33F系列芯片的A/D、DMA、D/A功能的应用范例。开发环境：用MPLAB C30编译，用ICD2在线调试和编程。-Descr iption: The code is on the dsPIC33F series chip A/D, DMA, D/A sample function of the application. Development Environment: The MPLAB C30 comp