PLC Cable Connection

这是一个非常完整的qpsk调制解调用fpga实现的工程，在工程中已经能够正常使用，使用的quartus ii 开发，使用Verilog语言，文件中还包含了各种滤波器的系数文件，还有matlab仿真文件，整个工程包含从串并变换，相位映射，到成型滤波，中通滤波，cic滤波，调制，再到解调过成的下变频，匹配滤波，载波提取，位定时，判决，整个完整的过程(This is a very complete QPSK modulation and demodulation using FPGA implementation of the project, the project has been able to properly use the Quartus II development, the use of Verilog language, the file also contains the files of various filter coefficients, and MATLAB simulation files, including the entire project from the string and transform, phase mapping, molding in filtering, filtering, CIC filtering, modulation, and demodulation frequency, a matched filter, carrier extraction, timing, judgment, the whole course)

GPS定位仿真，计算点面上某点的概略位置坐标，实时获得点面上点的位置(GPS positioning simulation, calculate the approximate position coordinates of a certain point on the point, and get the location of points on the spot in real time.)

CPU于MCU通过串口传输，增加IO辅助，避免漏传数据(CPU to MCU serial transmission through increased IO assistance, to prevent leakage of data transfer)

说明：  串口通信高级编程提供了一个能够进行串口通信的类，能够方便地进行各种数据通信。 由于本程序设计到硬件编程，因此，如果读者的串口通信设备 没有连接好，可能会有问题 (Serial communication provides a high-level programming to carry out the type of serial communication, the ability to easily carry out a variety of data communications. Since the hardware design to programming, so if the reader' s serial communications equipment is not connected well, there may be some problems)

基于MATLAB的串口通信程序，能够和下位机串口进行通信(MATLAB-based serial communication procedures, and the next bit to communicate with the serial port)

说明：  串口通讯实验： 本实验得到的结果为，打开超级终端，设置波特率为115200，数据流控制位为无。运行系统，就会显示“UART & Interrupt Experiment,Please Input from the keyboard”，我们就可以通过写串口操作。 在flash调试时，需要修改RO BASE为0x00000000，其他不用修改，重新编译下载就可运行。 注意：由于系统产生中断，程序计数器就会跳到0x18处执行中断服务子程序，所以不能在SDRAM调试。 (Serial communication experiment: the results of this experiment, open HyperTerminal, set the baud rate to 115200, data flow control bit is not. Operating system, it will display &quot UART &amp Interrupt Experiment, Please Input from the keyboard&quot , we can write the serial port operation. Debug in flash, you need to modify the RO BASE is 0x00000000, the other not modify, recompile download can run. Note: Due to system interrupt, the program counter will jump to 0x18 Department execute the interrupt service routine, it can not debug the SDRAM.)

使用VS2013的MFC编写的一个简单Modbus RTU的单命令控制Demo，能够实现继电器的开和关(A single command control demo of a simple Modbus RTU written in MFC of VS2013 enables relay opening and closing)

十六进制向十进制转化的程序，可用于串口通讯编程。(Hexadecimal to decimal conversion program can be used for serial communication program.)

自制上位机，可以完成发送接收，测试可用。(Homemade PC can complete sending and receiving, and test is available.)

串口效验接收中断协议，接收数据在串口回送。(Serial communication. Be able to complete the next-bit machine on the host computer sent signals 1-9 to respond, LED can be bright, digital display corresponding figures)