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Found 12 results

  1. Hello I am creating a verilog module on the basys 3 board to interface with the Pmod DA3. I have tried running the module with the DA3 connected and wasn't getting any voltage reading. I have my sclk speed at 25Mhz. Below is my current code and screenshots of my test bench and the pmod outputs on an oscilloscope. Any help is appreciated. `timescale 1ns / 1ps module sclk( input clock, input reset, output sclk ); reg[24:0] count = 0; reg sclk = 0; always @ (posedge clock or posedge reset) begin if (reset ==1'b1)begin count <
  2. Totally new to all this. 73 year old grandpa, retired engineer, returning to grad school, microelectronics concentration. Lots of technology catch-up to do. So, starting with VHDL. I must self-teach VHDL and need my first FPGA. Can someone help me understand these 3 possible choices for someone in my position: (1) Basys MX3 PIC32MX, (2) Nexys A7-100T, (3) Zybo Z7. Don't want to buy anything too complex, but I have to get the basics with ability to grow. Many questions about compatibility, accessories, programming... Can you help me get started?
  3. Hello, I was trying to read value from the MX3's microphone. When I'm using the fonction MIC_value() from the library mic.h, I only get value around 512. What is the unit of the value that I receive from this function ? Is it the amplitude of the signal ? Also, in the user guide, they said that if we change the potentiometer, it doesn't change the value that we read at all. I don't understand why. /* * File: main.c * Author: gout2401 * * Created on 28 juin 2019, 09:47 */ #include <stdio.h> #include <stdlib.h> #include <sys/attribs.h> // in
  4. Hello! For a (very modest) first try with the BASYS 3 board, I'd like to measure a signal using an ADC for the BASYS 3 board I have, possibly average the signal over a set of measurements and then send this out using PWM. I'm looking for examples in VHDL, and only found one in verilog so far. And any explanation that you care to offer me. As you can tell I'm a novis and a biologist at that. I've taken (75%) of a beginners course in VHDL, but am very interested and enthusiastic. Now, hit me (with kid gloves). Thanks in advance!
  5. Just some silly hello world code (I'm a super newbie to FPGAs) Vivado 2017.4, windows 7 xdc as per https://reference.digilentinc.com/learn/programmable-logic/doc/github/digilent-xdc => set_property IOSTANDARD LVCMOS33 [get_ports a] set_property IOSTANDARD LVCMOS33 [get_ports b] set_property IOSTANDARD LVCMOS33 [get_ports c] set_property PACKAGE_PIN U16 [get_ports c] set_property PACKAGE_PIN W19 [get_ports a] set_property PACKAGE_PIN T17 [get_ports b] vhdl=> library IEEE; use IEEE.STD_LOGIC_1164.ALL; entity AND_GATE is Port ( a
  6. Hello everyone, I use 1 pin of the pmod connector of the basys3 board for receiving a signal. So in the .xdc file i set every right but I need to say that the incoming signal is not a clock. In the help it suggests "set_property CLOCK_DEDICATED_ROUTE value [get_nets net_name]". I changed the net_name with the signal name "set_property CLOCK_DEDICATED_ROUTE value [get_nets echo_pin]" but u get this critical warning "Invalid option 'FALSEecho_pin' specified for'objects'. anyone an idee? thank you
  7. Hello, I am attempting to communicate to a Pmod RF2: IEEE 802.15 RF Transceiver with a Basys3 board using the SPI protocol in VHDL. The microchip on the pmod is the MRF24J40. How do I identify the address of the MRF24J40? To my understanding, if I want to write/read a memory location on the MRF24J40, I need to send the address followed by the address of the specific memory location on the MRF24J40. Is it written on the microchip itself? The master and slave SPI modules that I am attempting to use are linked to this post. The documentation for the master and slave links are below. Th
  8. Hi, I am looking to buy a board of the Artix-7 family and trying to choose one between Arty, Basys 3 and Nexys 4 DDR. I have the following questions. 1. Is it true that the Vivado software that comes with Arty can only be used for one year since Arty is an evaluation board? 2. Is it possible to install the Vivado software on different computers and work on them (using the same board)? Does this behavior differ in any way among the three boards mentioned above? 3. I am confused about the number of cells in Nexys 4. On Digilent's website, it says Arty & Basys 3 both have about 33K logi
  9. I have been working on a project with my Basys 3 board and recently ran into an issue where a 16 bit signal I mapped to the LED's was displaying on my seven segment display. The signal was generated by a sudo random number gen thats I created ( the signal changes with the event of the clock). My project also includes a segment decoder which does the appropriate time multiplexing to map a different signal to the segment display. Nowhere in my code can I find the reason for this incorrect mapping, so I wrote a dummy program that did nothing but take the random number and send the signal to the L
  10. Greetings all! I've been trying on and off since September to get a simple sawtooth to sound from the PMODAMP3, so that I can eventually make music with it. Here are my intended settings: JP5 unloaded: Standalone mode JP6 unloaded: 0dB gain JP3 loaded: i2s format JP4 loaded: MCLK = 256*fs JP2 loaded BCLK side. BCLK = fs*64 = MCLK/4 = 2.5MHz, therefore MCLK = 10MHz, fs = 39kHz I've attached the code in 4 Verilog files: Basys3_Abacus_Top.v (name inherited from example project), sclk_div.v (generates BCLK from FPGA clk), i2s_tx.v (i2s transmitter), and oscillator.v (produces a simple 1Hz sawtooth
  11. Hi, I have a question about LEDs on the basys3 board. I'm using Verilog, and in my code I have a top level module which has other sub-modules within it. Like this: module top (); sub_module m1 (some_inputs, some_outputs); endmoduleIf I want to have the sub-module with an LED output, how would I go about doing it? I already tried having "output [15:0] led" in the definition of the top level module and also having it as an output of the sub level module, but that did not work. I also tried to simply declare led as a register within the sub_module, but that also didn't work.
  12. ricardo_lara_gomez

    Basys �

    I need a program to count the turns of a motor, could tell me I need?????????