vhdl 中各种数据类型的转换实现,可以调用函数库实现

基于fpga的电子血压计。pdf文档，好用，内容清楚简单，转载而来(Electronic sphygmomanometer based on fpga)

Introduction to learn laboratry with altera quartus II 9.1

Rotary Encoder Reading the Rotary Encoder and indicating the selection through a LED placed on the front panel. Events counter for the Rotary Encoder and displaying the events on the front panel Project: events counter for the rotary encoder and displaying the events on the SSD Pmod (Seven-Segments Display Programable module).

mipi传输，用于新型图像传感器的传输问题(MIPI transmission, new image sensors for the transmission problem)

说明：  用于生成adams或recurdyn所需的路面不平度，用于悬架或其他的仿真(Adams or recurdyn used to generate the required road roughness for suspension or other simulation)

protel fpga常用封装库1，非常难找的-protel fpga library a popular package is very difficult to find the

sdram 代码在最后要强调的是，本专题以技术为主，由于篇幅的原因，不可能从太浅的方面入手，所以仍需要有一定的技术基础作保证，而对内存感兴趣的读者则绝不容错过，这也许是您最好的纠正错误认识的机会！

说明：  关于quartus与modelsim 仿真(about quartus and modelsim simulator)

小波包分解，重构轴承振动信号，Hilbert包络，FFT进行频谱分析，以获得轴承故障频率。(Wavelet packet decomposition, reconstruction of bearing vibration signal, Hilbert envelope, FFT spectrum analysis to obtain the bearing fault frequencies.)

如上图所示， Rst是低电平有效的系统复位信号，Clk是时钟信号。AB[5：0]是地址信号，DB[7：0]是数据信号，wr是低电平有效的写信号。start是启动信号。 模块中有一个64x8的双端口的存储器。系统复位结束后，可以通过AB、DB和wr信号向同步存储器写入数据。当写入64个数据后，给出一个Clk周期宽度的脉冲信号start，则系统从存储器0地址处开始读出数据，读出的8位数据从低位开始以3位为一组，每个时钟周期输出一组，即第一个时钟周期输出[2：0]位，第二个时钟周期输出[5：3]位，第三个周期输出1地址的[0]位和0地址的[7：6]位，直至将存储器中64x8数据全部输出。若最后一组不足三位，则高位补0。 (As shown above, Rst is an active-low system reset signal, Clk is a clock signal. AB [5: 0] is the address signal, DB [7: 0] is the data signal, wr write signal is active low. start is the start signal. Module in a dual port memory of 64x8. After the reset, you can write data to the synchronous memory by AB, DB and wr signals. When data is written to 64, given the width of a pulse signal Clk cycle start, the system begins to read the memory address 0, 8 data read out a low starting with three as a group, each clock outputs a set period, which is the first clock cycle of the output [2: 0] bits, the second clock cycle output [5: 3] position, the third cycle of the output of an address [0] and 0 address [7 : 6] bit, until all the data in memory 64x8 output. If the last group of less than three, the high 0s.)