I am to transfer test vectors (1s and 0s) from a PC user interface to the FPGA RAM using serial port. PAR will not attempt to route this signal.' PC serial communication with FPGA. I want to send A and B from PC to FPGA using serial port as well. This particular module uses the AXI stream interface. Hello every one, I am new to FPGA i am working on serial port. I have to know that how to send data to serial port with start and stop bit and my. Lab 8: Interfacing FPGA Spartan-6 with. The computer host to exchange data with the FPGA. Introduction The Universal Serial Bus. FIFO interface on the FPGA.

I don't know if this belongs here or stackoverflow. Modernism In Indian English Literature Pdf. I assume here as although verilog looks like software it's actually describing hardware connections? I have a Spartan-3AN evaluation board and I'm trying to implement a simple rs232 port interface on it which I can't get to work. I'm an experienced software developer but new to verilog and digital design. I want to move up from flashing a single LED to the next step.

I've tried to implement it like this - 1) Generate a clock pulse 'serclock' at the baud rate, so at the start of each bit. 2) Implement a state machine that once it's told to start steps through the states at the correct speed. 3) Implement a lookup to output the correct data bit depending on the state that 2) is in. If there is a better way I'd appreciate any help. However I would expect this to work but I get nothing at all.

Can anyone spot anything stupid that I've done? I'd appreciate any advice. // Serial port demo program // // Assumptions: 50Mhz clock rate module SerDemo(input clk, output ser); // Start signal tells it to start sending bits reg start; //The bits of data to send reg [7:0] data; ///////////////////////////////////////////////////////////////////////////// // Serial port clock generator // Generate a 9600 baud clock signal for the serial port by dividing the // 50Mhz clock by 5208 reg [14:0] clockdiv; // Count from 0.5207 then reset back to zero always @(posedge clk) begin if (clockdiv == 5207) clockdiv.

If you look for a solution to interface your embedded controller to a computer with only USB ports, I can highly recommend an USB to RS232 bridge chip. I use the from in my embedded systems. FTDI not only provide the chip but also a driver for it. In your computer the chip will be detected as a good old COM port, just as the old ones with all the handshaking etc. In the controller end the chip outputs TTL RS232, SPI or I2C depending on your choice of chip. If you are looking for parallel access, FTDI also have a.

The driver can be customized if you want too and is free. It works on Windows, MAC, Linux and Windows CE. Now, if you only want to have a traditional 9-Pin COM port, there are several USB to RS232. Regarding the programming you are limited by what your vendor or a third party provider offers. When you consider controlling, USB gives you great new possibilities. Just a quick example: Using a AT32UC3B controller and its built-in USB features I can connect that device to any Windows 8.1 device (both X86 and ARM such as the Surface RT) completely driverless. I make use of the HID protocol for which a USB class driver exists and which I can use easily.

This offers things such as automatic error correction. Of course, you can also use Linux with its built-in HID class driver. Please understand that Windows Store applications do not support Serial Ports anymore (which I consider to be a good thing).

For programming an FPGA via USB, I would highly recommend buying a knockoff JTAG cable from ebay. You can get a Xilinx compatible one for about $40.

I have a couple of them myself, and they work great. You should be able to get Altera compatible cables as well. In terms of communicating with an FPGA or microcontroller, there are a couple of possibilities. If all you need is really low bandwidth communication, a serial to USB chip such as the ones made by FTDI or Exar are quite good.