MAX125和80c196接口程序１４位Ａ／Ｄ－ＭＡＸ１２５与８０１８６及ＤＭＡ控制器的接口应用 -MAX125 and Graphics Interface Program 14 bit ADC-MAX125 with 80186 and DMA Controller Interface Application

本章主要介绍TMS320F240X的片内外设，其片内外设主要包括:事件管理器模块（EV）、A/D转换模块（ADC）、串行通信模块（SCI）、串行外设接口模块（SPI）以及局域网控制器模块（CAN）等。-This chapter introduces TMS320F240X the on-chip peripherals, and its on-chip peripherals include: event management module (EV), A/D converter module

在TMS320F28335中，利用ePWM控制ADC采样速率，转换完成，DMA控制器将数据从寄存器转移到内存中，并产生中断。-On chip TMS320F28335, control the adc sampling rate by ePWM. when the conversion is complete, call the DMA controller to transfer the data into memory. After that, initiate an interrupt.

利用28335自带的ADC采集两路模拟正弦信号，用DMA方式将采样值写入内存，用epwm控制采样周期。利用FFT求得两路正弦信号的相位差。-Sampling two analog sinusoidal signals, write them to the memory by DMA controller. The sampling period is controlled by the EPWM module. Calculate the phase difference by FFT meth