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Found 9 results

  1. I am not able to interface PmodCLP with arduino UNO. Code provided on the website is compiling but lcd is showing nothing. Please provide me the working code and image.
  2. I am trying to connect my PMOD MTDS to the Zybo Z7, without Arduino. I have integrated the IP files, connected it via block diagram, and set up a FAT32 microSD with the 2 files that are needed also. When trying to connect to Vivado I can seem to figure out how to get to the console for which I can do MTDS Firmware code so I can do a custom UI. Documentation does not help much with connecting this PMOD. Please advise if you're familiar thanks.
  3. Riesenrad

    SPI TFT Display

    Hello everybody. I recently got this SPI TFT display for my Raspberry Pi: https://www.conrad.at/de/raspberry-pi-display-modul-schwarz-rb-tft32-v2-raspberry-pi-a-b-b-raspberry-pi-1380381.html http://joy-it.net/tft-display-3-2-v2/ But I'd have more use for it in an FPGA project of mine. Now, I couldn't really find a pinout but as it's made for Raspberry Pi I could already figure out what lines are already reserved for power and with a little bit of luck, the MOSI / MISO / SCLK / Chip Select run on these pins: https://de.pinout.xyz/pinout/pitft_plus_35 I just wanted to know whether anyone has done this already and / or knows the pinout. Also, what could happen if I put data / voltage on the "wrong" pins? Also, is there something like an IP block that you can use for this type of stuff or would I need to write everything by myself? Thank you in advance! I've never used a display (except VGA) with my board so that's why I ask all these questions....
  4. Hello, I bought the Nexys 4 ddr and the pmod oled (Pmod OLEDrgb: 96 x 64 RGB OLED ) display. I'm trying to display ascii text on the PMOD using the microblaze. I've gotten this up and running to the point where I can display lines etc... In looking at your resource center I still can't figure out how to print characters. How does this process work? I've figured out you need to define the characters in a "font" array and it looks like you use 5 bytes to create a 5x7 grid and the 1's determine what pixels are on there for allowing you to create the character. I'm confused as to what commands you use to send this data to the OLED. Do you use a write pixel command to individually turn on every pixel? Do you load one char in the GDDR ram and it displays it? Does the GDDR ram represent the display so as you write data into GDDR (depending on where in GDDR you put it) it gets displayed? I'm just generally confused a bout the process used to send and place data like this on the screen. Could someone elaborate on this process and if possible point me to more documentation (other than the SSD1331 data sheet) that describes how these things work a little better? Thanks!
  5. Hi, currently, i managed to run linaro linux on my zybo by using this guide http://www.instructables.com/id/Setting-up-the-Zybot-Software/ inputs such as mouse and keyboard are working fine, however the touch input from my lcd display are not working (the touch input works in my windows computer, so its not the display which is broken) the touchscreen display is from eGalaxTouch or better known as eGalaxTouchscreen can someone kindly help me to solve this problem? thank you very much Regards, Lightning
  6. Hello Digilent community, I am currently taking my first digital electronics class and my final project is a calculator written in VHDL using a Basys3 board, 16-key keypad, and a 16x2 LCD display with parallel interface, all provided by Digilent. I took a look at the provided example code from the resource library and I just had some questions about how it works. Now, the example code declares a constant before any of the processes, and this constant is an array of std_logic_vectors so it holds a preloaded message "Hello From Digilent" with the necessary function sets and all that preceding the message. In my case, I have to have a way to display the inputs from the keypad on the display and also display the output on the 2nd line of the display. I have the main logic part of the calculator settled, I just want to know how I can direct these signals from the keypad and the output of the computational module (as in the sum, difference, product, etc.) to the LCD display. I have never played with a display before now and never used VHDL or any type of board like the Basys3 before this class, so I guess I'm still quite novice and don't understand a good part of what the example code is telling me. I do get that the state machine is just cycling through the values in the constant and waits for certain delays to pass through before transitioning between certain states. Since the values on the display have to be updated live as the user inputs numbers from the keypad and also when there is a value computed, how can I shift from having a constant with a preloaded message to something that can update itself as needed? My idea was keep the idea of the array of std_logic_vectors but only have one value (rather than the 23 or 24 that are preloaded in the current example code) that will update with every key press. I'll have two of these, one for the inputs (to show the numbers and operations on the first line) and one for the output (to show on the second line). I'm thinking maybe I declare a variable within a process that will update and be sensitive to the key presses? Also, I tried looking around the reference manual and such but I could not find the function code for how to display information on the 2nd line; so far, stuff only displays on the first line. Sorry this is such a bulky post. I have had a lot of questions and my professor hasn't been around much. Also, part of this project is learning to interface with new components, so in my case the keypad and lcd display, and I'm not having much luck without any guidance unfortunately. Thank you for taking the time to read this! P.S. Attached the example vhd file from Digilent here for easy access in case anyone wants to look! PmodCLP.vhd
  7. Twoism

    Zybo base system design

    Hello, I've got some troubles while trying to fully understand the Zybo base system design. I need to replicate in my design (with Vivado 2015.4) the video part of the bsd, with the Axi display control ip. The design works but some points are not very clear to me: I've notice that 2 different clock sources are feed to the PL: (FCLK_CLK0 @ 100 MHz and FCLK_CLK1 @ 150 MHz). What is the reason behind this? Isn't 100 MHz enough for the VDMA? Why an Axi protocol converter is used? The design was build for an older version of Vivado (and ip library)? Thanks
  8. fefernandezpy

    SPI

    Hi, I have PmodALS with basys 2. I need some example, in VHDL, to read data with the SPI protocol. I want to show the lectures on the 3 seven segments display of basys 2. thank you
  9. I realised a Vivado ip axi controller for basys3 4 digits display. You can find ip and test project here https://www.dropbox.com/sh/62c4uoar3lf9gzn/AABWfCCFOgShxkID7U6OjXdha?dl=0 It's easy to expand for nexys4 8 digit display. Actually the controller manage the number of digit to use in hex or bcd mode with the limitation of overflow. Dp are not managed. It will be helpful if Digilent can develop some ip templates for Pmod modules .... just a suggestion