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43 Threads found on edaboard.com: Nexys 2
I recently bought a Digilent nexys 2 board, and after a few days of research got to the point where I can successfully program it over USB from a Linux host without the use of a separate (and expensive!) JTAG interface. Google told me even before I purchased the board that this is a very common requirement; it seems that I'm not the only one inter
i'm relatively new to digital design but i'm very interested in the topic. i did take introduction to digital design class but wanted to learn more, so i purchased a book (introduction to digital design from lbe), nexys 2 fpga and installed all appropriate software. i tried working out the first example (it simply connects leds to the switches on t
I'm very confused on the difference between synchronous and asynchronous access. From what I understand, in asynchronous mode access is 70 ns which is ~14MHz, and in synchronous mode access can be up to 80MHz (according to the nexys 3 ref manual). Since my primary interest at the moment is for video ram, I need to access it a
I am new to FPGAs I need help to display an string on 16x2 alphanumaric LCD on nexys 2 board. I need step by step aproach from begning of the project in Xylinx ISE suit. Thanks in advance. Regards gapoo
You can RTFM here . See Configuration on page 2. As you can see in that fine piece of documentation, jumper 8 is what he is talking about.
Hello! What is the safest way to connect a piezo to the nexys 3 PMOD? Trough a transistor? Or could i connect it directly? Thanks.
Hi, First post here and completely new to fpga, please be gentle :) I'm trying to teach myself a bit about FPGA's and have read a bunch of books, done a few experiments with a nexys 3 board, even managed to get the T80 (Z80 cpu) core up and running, but have now hit a brick wall. I'm trying to get my T80 project to run code out of the PCM
Dear All, I'm doing a project based on nexys-2 FPGA board. A sensor module and FT2232H USB module are connected to Pmod connectors of nexys-2. There are two modules in my FPGA design, one is sensor interface module, other is FT2232 module. Sensor interface samples output of my sensor, and routes it to FT2232 module. FT2232 module captures
Hi, I'm experiencing a strange problem with my project. I'm using the nexys 3 board from digilent (spartan 6). I have a lot of components in my project (RAM access, UART communication, SPI communication, etc.). Until yesterday, every part of my code was functionning fine on the nexys 3 devellopment kit. But now, when I'm adding or just changing a
There are "tons" of ADCs better suited for FPGA interface than ICL7135, but it can be done. You'll need 5V to 3.3V level converters, and decoding the multiplexed BCD outputs. All accessible IO pins at nexys 2 are interfaced through the Hirose FX2 connector, I think.
Hello Everyone, I am trying to design a PDP-8 memory using the nexys-3 board. But I am having a hard time with trying to figure out how to read/write using the CellularRAM on the board. I couldn't find any useful information on Google. Can someone give me an example on how to read/write with CellularRAM? Thank you!
Hello, I want to give the two 6 bit binary numbers to the nexys 2 board and I have to show the multiplication result of those 2 binary numbers on the 7 segment display of the nexys 2 board, I wrote the multiplication program and it is working fine my problem is how to give two sets of 6 bit binary numbers to the nexys 2 board(have only 8 (...)
I am reading through the nexys 2 reference manual and found this paragraph.. I have read through the cellular RAM on the same board and has downloaded simulation model/testbenches from Micron.. Where can I find same model for this ROM also? I browsed through but no avail.. :( The external ROM is a 128Mbit Intel TE28
Hi present i am doing master thesis on Image processing using Image Enhancement technique My task is ( Image enhancement technique implement in vhdl then code send to the nexys 2 board ). Is this board suitable for this application ? am using 64*64 image. if its possible,then how can i take the ou
Hi present i am doing master thesis on Image processing using Image Enhancement technique My task is ( Image enhancement technique implement in vhdl then code send to the nexys 2 board ). Is this board suitable for this application ? am using 64*64 image. if its possible,then how can i take the output from the FPG
Hey, I'm using the Digilent nexys board to make a DSP. I've already designed a function generator so I have code that allows me to use the SPI to write out to a DAC and that is working fine. However, anytime I try to have the SPI drive multiple slaves I lose everything. I have narrowed it down the the SCK. Whenever I use the contraints fi
Higher spec than the Digilent nexys 2-1200 in terms of FPGA chip, has some SRAM/SDRAM and flash for data storage as well. Some ADC/DAC and some text/number display, I also need high speed data interface which can connect to PC for data transfer and can program easily in VC. Cost below US$250. With English manual.
i'm new to digital design and don't know the tools that well. i'm using a nexys 2 fpga and Xilinx ISE WebPack 9.1i sp 3 for synthesis and implementation. i have coded a simple johnson counter but after implementation i received the following warning: Created netgen log file 'time_sim.nlf'. Executing C:\Xilinx91i\bin\nt\bitgen.exe -int
hello all, I have two questions- 1.) I have written a behavioral code in verilog that uses some internal registers. During synthesis warning is generated that the signal is assigned but never used in the program so it will be trimmed during optimization part.Will it produce an error in the fpga kit. 2.)there are two por
Have you successfully instantiated a MicroBlaze and ran some test code? If you search for some of my old posts you will get some clues :). I used a Digilent Spartan 3E 500 starter kit. I tried a nexys 2 before that but needed RAM.
i'm somewhat new to digital design. i'm using ISE WebPack 11.1 and a nexys 2 board (Spartan 3E FPGA) to learn more about digital design and FPGAs in general. the WebPack can generate a test fixture (at least initial version of it) for a given module. below is the initial block it generated for me initial begin // Initialize Inp
I am using nexys 2 Spartan XC3S 1600E board. I have to use Digilent Adept but since Adept 2.3 will not run in my 64-bit windows-7 I tried installing Adept 1.0. But Adept 1.0 does not have Chipscope plugin. As expected the Adept 2.3 is not detecting my board (It shows 'unknown device'). Is there any way to use chipscope plugin with Adept (any
PmodJSTK and your nexys 2 will communicate via SPI. nexys will be master and PmodJSTK will be slave. You should implement SPI controller in Spartan 3E. FPGA will send 5 bytes, first to light leds, the remaining four bytes that are shifted in will ignored by the PmodJSTK. PmodJSTK will response with 5 bytes X (low) X(high) Y (low) Y(high) Buttons.
Checkout these excellent tutorials using the Spartan 3E Starter and nexys 2 Boards. The are free and include the project files and PDFs; tutorial 15 covers ADC and DAC. SPARTAN 3E TUTORIALS
Hi guys. Ok i have been googling and looking up in the forums for days but i still am very unsure about keypad interfacing. I want to design a 4x4 keypad decoder in FPGA using vhdl, and then display it on the 7 segment led of my nexys 2 spartan 3e board. When pressed, ie: 5, on the keypad, the 7 segment should show a 5. I understand that a
Did you check the user manual + schematic for the nexys2? Digilent has those on their website... Those 4 PMOD's can be used for input/output, depending on how you configure them. The only restriction I recall is that LD7:LD4 are shared with one of the PMOD's. But in practice that's not much of an issue. Your 4x4 keyboard doesn't need any supply?
Hi guys i've had all my codes done but when i download the program to my board, the four 7-segment shows the same number (lets say i press 3). It wasn't what i intended. i want it to be like when i press a 123 it first shows 1 in the first segment, then 1 in the second segment while 2 in the first segment, and finally 1 in the third segment while 2
For a list of boards: Cheap FPGA Development Boards | Joel's Compendium of Total Knowledge Personally I am partial to digilent boards, since they give me good value for money. The only drawback to the Atlys board is the VHDCI connector, which was not the best choice IMO. For the rest it's a pr
The USB UART has a simple 2-wire RX/TX interface on the FPGA side, and appears as a virtual serial port on the host PC. So in windows country thats COM3: for example, and in linux that's /dev/ttyUSB0 for example. On the PC the software can then be a terminal program like hyperterminal, minicom, or your own program using serial port. The nexys3 u
I'm trying to learn how to write and read the cellular ram (PSRam) on the nexys 3 board. I've read the nexys 3 Reference Manual, did a TON of Google searching (learned what PSRam was and probably about 7 or 8 other new terms), and finally managed to find some sample Verilog code and tweaked/modified it to get it to work. It does asynchronous writ
how to store a .wav file in sdram of nexys 2 board of spartan 3E?
Another option that works with the nexys2 is FPGALink , which provides a library for programming and communicating with FPGAs at high speed over the built-in USB device. It works in a way similar to Adept but is much better supported :)
Hello, I am using nexys 2 board and VHDL language, I've already designed the vga controller 640x480, the PS2 interface for the keyboard,i am using a RAM block with 12-bit address and 8-bit of data and a font rom. I know that RAM does not support reset, i have a reset btn that resets the counters for the lines that i want to write the keyboard's c
There is only one pin for each color (red, green blue) in a VGA connector. These signals are not digital. Somewhere between the FPGA and the connector the digital signals must be converted to analog by a D/A converter. In the nexys 3 board, this is done by a few resistors for each color. Doing a 2-3 bit D/A-converter this way is easy. An 8-bit D/A-
im trying to display a red box on a 640 by 480 screen however nothing is displayed on my vga screen im using nexys 3 and these were the port used clk v10 ns-n6 vs -p7 red1 -u7 green2 - p8 blue2 -r7 here under is my code which i made thanks i appriate any help library IEEE; use IEEE.std_logic_1164.all; use IEEE.std_logic_arith.all;
Quick cut & paste from some notes. Too lazy to sort it out, but might get you started faster then your current state of affairs. :P The code as is (or as was years ago :P) worked in one go. Since then I cobbled on some extra stuff for faster transfers, but that is also years ago. :P Anyways, you can use the sensicomm hdl for the fpga and then th
What's the design you're using? Something you've written yourself, or have you converted the Atlys/nexys 3 demo project? Are you sure the UCF is correct? Does your simulation show that you're sending the correct signals to the display?
Hello, I have looked a few FPGA boards and some of them as Digilent nexys 2 got signals routed under high frequency oscillators. Isnt that a problem? Or the as the oscillator is shielded there is no issue? Best regards, LR
Hi all, I need some help with hummingbird cryptographic algorithm. I have developed the ecryption and decryption in ise 12.3. I need help with implementing it on the FPGA nexys 2 xcs500. My output's are assigned to the LED's. But it does not match the simulation. Every time I program the .bit file through adept, my results keep changing on t
can any one send how to detect object in fpga through ir sensor using spartan 3e or nexys 2 board?
Hi, I am trying to read data through serial communication in matlab I am reading 2 bytes of data First byte is zero for most of the times and 2nd byte contains information. I am getting timeout error Warning: Unsuccessful read: A timeout occurred. Is there any command to read data starting with zeros Code: nexys
Hi, I am doing VHDL project using nexys2 board. I need to read the sensor readings using matlab through serial communication. My Code: nexys = serial('COM1', 'BaudRate', 9600, 'Parity', 'odd', 'Terminator', '', 'Timeout', 1); fopen(nexys); s = 's'; fwrite(nexys,s,'uchar'); scan_s1 = (...)
Hi, I am a C programmer and I usually work with ucontrollers (I am not a student) and I am trying to learn VHDL. I bought a nexys 2 board and I read some basics. Now, I am trying to do this exercise (pag. 2): however, I get the following error from the compiler: "hexcount.vhd" Line 30. Type of Sout is in