Xilinx FPGA moving data across asynchronous clock boundaries

UART功能,可以增加在NIOS2內,主要來做外部Flash的擦除及寫入,需搭配上位機傳輸字串來控制(UART function, can increase the NIOS2, the main external Flash to do the erase and write, to be a string with the host computer to control the transmission)

若农场路无车辆，则在高速路保持绿灯。在探测农场路有车辆，高速路上的交通灯应由绿到黄，再到红，并允许农场路方向灯变绿，绿灯亮一段时间，由绿变黄再到红。(If there is no vehicle on the farm road, keep the green light on the highway. There are vehicles on the farm road, the traffic lights on the high speed road should be green to yellow, and then red, and allow the farm road lights to turn green, the green light for a period of time, from green to yellow, then to red.)

DDS基本原理，详细讲述了DDS基本原理及设计技巧(DDS Basic principle)

State.Machine.Coding.Styles.for.Synthesis（状态机，英文,VHDL）-State.Machine.Coding.Styles.for.Synthesis (FSM, English, VHDL)

基于fpga的多功能数字时钟的实现，已经编译过了，绝对可行-fpga-baseed clock

zc706板子原理图，在使用板子时候可以参照设计，使用帮助巨大。(Zc706 board schematic diagram, when using the board can be reference to design, use the help.)

在这里，我们目前使用 VHDL 的 8 位 crc 设计。循环冗余校验是讨论检测错误的通信，使用 vhdl 语言这一过程变得快速和可靠。

ALTERA NIOS处理器，VHDL语言在QUARTUS编译通过，然后有C语言在NIOS SHELL下驱动，实验音频解码-Altera NIOS processor, the QUARTUS VHDL compiler, then the C language under NIOS SHELL-driven, experimental audio decoder

说明：  基于fpga的信号发生器，通过调整按键可以生成正弦波，方波，三角波，锯齿波(Sine wave, square wave, triangular wave, sawtooth wave)

详细介绍了VHDL的28个程序。从简单到复杂。介绍详细-Details of the 28 procedures VHDL. From simple to complex. Detailed introduction