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Found 180 results

  1. 1116345

    Pmod Ad5

    Hello I am using the Pmod AD5 to convert my analog signals from light sensor to be able to feed it into the fpga. Any one has an idea of how can i proceed? I tried by testing the AD5 by inputting an analog input but i cannot get to the digital output...any help would be highly appreciated..Thanks
  2. Here are 22+34=56 pins and I must add 4 pmods. How to declare in the IP INTEGRATOR pairs of pins as a Pmod entry?
  3. Hello, I am trying to use the pmod DA4 with my Arty S750 board. I'm aware that Digilent does not offer an IP for interacting with the Pmod, so I took it upon myself to design one. Anyways, things seemed to be going well until I actually tested the DA4. I know that the DA4 uses SPI to communicate, so I programmed the IP to communicate that way, and it does (outputs from the pmod connector correctly seen on an oscilloscope), but every time I connect it to the DAC I can't get much of anything to come out of the channels. I've read through the AD5628 reference manual, but a few things were ambiguous to me. First the commands on table 9. I don't really understand the difference between writing to the register (command 0) and writing to the DAC channel (command 3), and which I should be using for my project. And second, I plan on using an internal voltage, and it says that setting up the internal voltage is the first step. As I have it now, it's the first thing my program does and I'm afraid that the DAC is unable to read this input (maybe I should add a brief delay? I saw a brief delay in the "simon says" code). I know it's been a long post, but any answers or insights on the DA4 or any other part of my post is much appreciated. Thanks, Gill
  4. Hello, I am trying for a couple of days now to understand the pinout of pmods when used on a minized. I would like to use the Vivado-library for but I am facing a number of problems. I hope to be able to connect a 12 pins pmod (oledrgb) to one port and 2x 6 pin pmods (encoder and buttons) to the second one I understoody that I have to make a xdc file to manually connect them since the board is considered "custom" (so no xml, although I tried to edit one) and because I need 2 pmods to a single port.In the block diagram when I make the pmod connector external I get a pmod connector which includes connections like: PIN1_O Pmod_out_pin1_o\ PIN1_I Pmod_out_pin1_i\ PIN1_T Pmod_out_pin1_t PIN2_O Pmod_out_pin2_o\ PIN2_I Pmod_out_pin2_i\ PIN2_T Pmod_out_pin2_t and apparently comes from a file called board.xit and apparently means in, out and tristate for each pin. My question is how do I make a simple constraint file for these? Can someone provide an example. Why does it have to be so complicated? I mean surely I can "guess" if each pin is an input output or tristate from the module datasheet, but I am only considering how to route the pmods to their respective pin package so why should it matter? I tried to find a specific example including these pins names but failed to do so. Thank you for your help.
  5. Hello, Digilent vivado library ( https://github.com/Digilent/vivado-library) is not supporting for Virtex ultra-scale + (VCU118), The board can support for the MicroBlaze and PMOD Can you please help me out?
  6. Hi everyone, In this opportunity I want to establish a SPI communication between two PmodACL and a Zedboard, in Vivado software I done it this way: And I got the Bitstream file without any mistake. But how can I do the SDK configuration for read two PmodACL at the same time?
  7. I am very new to Raspberry pi and I need help regarding my R-Pi and Pmod ACL2 I would just like to test the functionality of the SPI connection and that's it I am not allowed to install any software I should just use the configure terminal I have installed the spi-dev on my R-Pi and I can't seem to find the ACL2 I'm sure I have connected them correctly Pls help Thanks in Advance
  8. hello i need some guidelines to know where to connect the output of pmod .Even i run connection automation i didnt get that.pls let me know where to give the output for interfacing acl
  9. Hi, I’m considering about VGA output device. About Pmod VGA, There are 2 questions(confirmations). Is this device manufactured from this schematic? Are there any other schematics? https://reference.digilentinc.com/_media/reference/pmod/pmodvga/pmodvga_sch.pdf In the following page’s demo, is the View Result Pmod VGA’s output result definitely? If it’s possible, please give me other Pmod VGA‘s output result(s). https://reference.digilentinc.com/learn/programmable-logic/tutorials/arty-pmod-vga-demo/start https://reference.digilentinc.com/learn/programmable-logic/tutorials/zybo-z7-pmod-vga-demo/start Thanks.
  10. Hi Digilent staff, and fellow forum members, Just wondering if you guys had considered making a USB HID -> PS/2 PMOD board? I was thinking of something like the circuit on the Nexys 3,4 boards which uses a PIC to convert a USB keyboard to PS/2 compatible signals. Would be handy for using newer USB keyboards/mice on PMOD socket equipped FPGA boards. PS/2 devices are becoming harder to find brand new. I (for one) would be interested in a few. Kind regards, Leslie
  11. I would like to transfer data from nexus 4 DDR board to basys 3 board using pmod. What connection I have to do?
  12. I've recently started working with the VGA Pmod, but was having the oddest issue. Output looked correct, but colours were interchanged. I assumed I was doing something stupid in my Verilog or constraints file, but after further testing came to the conclusion that the spec sheet was wrong about the colour pins! This seemed extremely unlikely, a programmer who blames the hardware is almost always mistaken, but then I inspected my board, which is labelled rev C. The labelling of pins on my Pmod didn't match the spec sheet or images on the Digilent web site: my green and blue pin labels are interchanged (see photos below). So I tried updating my constraints to match my board labelling, but the results were still wrong! I actually get the correct output if I do the following: Where the spec says green I use red Where the spec says red I use blue Where the spec says blue I use green You can see an example of a constraints file at the end of this post which works on my board. I have also got a friend to test this on his recently acquired VGA Pmod and he gets the same behaviour as me. Can someone from Digilent comment on this and update the spec on the web site to save other users confusion? Digilent Web Site: rev B My VGA Pmod: rev C ## VGA Pmod rev C ## VGA Pmod Header JB set_property -dict { PACKAGE_PIN E15 IOSTANDARD LVCMOS33 } [get_ports { VGA_R[0] }]; set_property -dict { PACKAGE_PIN E16 IOSTANDARD LVCMOS33 } [get_ports { VGA_R[1] }]; set_property -dict { PACKAGE_PIN D15 IOSTANDARD LVCMOS33 } [get_ports { VGA_R[2] }]; set_property -dict { PACKAGE_PIN C15 IOSTANDARD LVCMOS33 } [get_ports { VGA_R[3] }]; set_property -dict { PACKAGE_PIN J17 IOSTANDARD LVCMOS33 } [get_ports { VGA_B[0] }]; set_property -dict { PACKAGE_PIN J18 IOSTANDARD LVCMOS33 } [get_ports { VGA_B[1] }]; set_property -dict { PACKAGE_PIN K15 IOSTANDARD LVCMOS33 } [get_ports { VGA_B[2] }]; set_property -dict { PACKAGE_PIN J15 IOSTANDARD LVCMOS33 } [get_ports { VGA_B[3] }]; ## VGA Pmod Header JC set_property -dict { PACKAGE_PIN U12 IOSTANDARD LVCMOS33 } [get_ports { VGA_G[0] }]; set_property -dict { PACKAGE_PIN V12 IOSTANDARD LVCMOS33 } [get_ports { VGA_G[1] }]; set_property -dict { PACKAGE_PIN V10 IOSTANDARD LVCMOS33 } [get_ports { VGA_G[2] }]; set_property -dict { PACKAGE_PIN V11 IOSTANDARD LVCMOS33 } [get_ports { VGA_G[3] }]; set_property -dict { PACKAGE_PIN U14 IOSTANDARD LVCMOS33 } [get_ports { VGA_HS_O }]; set_property -dict { PACKAGE_PIN V14 IOSTANDARD LVCMOS33 } [get_ports { VGA_VS_O }];
  13. Hello I want to send an image from nexys4 DDR to basys3 through pmod. Is it possible? If yes then how to connect them. Nexys4 DDR will be master device.
  14. spartacus28

    Pmod ALS

    Hi, I am new to this forum so still getting used to things. I am trying to implement the Pmod ALS on an FPGA, and I require to comply with the SPI protocol. I understood the protocol, but the only problem I have is this. "The PmodALS reports to the host board when the ADC081S021 is placed in normal mode by bringing the CS pin low, and delivers a single reading in 16 SCLK clock cycles. The PmodALS requires the frequency of the SCLK to be between 1 MHz and 4 MHz. The bits of information, placed on the falling edge of the SCLK and valid on the subsequent rising edge of SCLK, consist of three leading zeroes, the eight bits of information with the MSB first, and four trailing zeroes." As far as I know, 3+8+4=15, and not 16, so where is the extra clock cycle and what is it doing? Is the sensor providing 4 irrelevant numbers before the 8-bit of information and then 4 irrelevant numbers again? Any help will be appreciated. Thanks.
  15. peepo

    PMOD ACL

    Where are the reference design verilog HDL files for the Diglent PMODAcl adxl345 or adxl362 accelerometers on the latticesemi icestick? they are mentioned in various documents, but I did not find source files nor documentation. I did find Nexys3 & Zedboard
  16. Hi there, I'm connecting Pmod NAV: 9-axis IMU Plus Barometer with Trenz board (Trenz TE0701-06 + TE0720). I have been following tutorial to add PMOD in the Vivado design. I using Vivado 2016.2 version. But, in the board section, there is no available board component as it is shown in tutorials which is for evaluation boards, like the one below: In my case, there is no board component: Could you help me in how to make connections with Zynq board, I'm currently using? Did anyone came across this? Thanks a lot!
  17. I am trying to use the Pmod ACL with my PYNQ board, but i am not able to read any data from it. I was able to use it with my ZYBO board, but using the same code with the PYNQ doesn't cut it. Is it possible that some Pmods aren't compatible with the PYNQ? I haven't been able to find much documentation on the pinnout for the pmod ports either... any suggestions?
  18. Hi, we are using AVNET ZedBoard and we would like to pull out a control signal from our Pmod port. Now the voltage can only reach 2.5V from Jc and Jd port, and reach 0.75V from Ja and Jb port. However, we need a voltage greater than 3V to drive our add-on mux. Is that possible for a PMOD to reach 3V on the ZedBoard? Thank you very much. Angie
  19. 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. The specification sheets for the pmod and MRF24J40 are included as well. Master: https://eewiki.net/pages/viewpage.action?pageId=4096096#SerialPeripheralInterface(SPI)Master(VHDL)-Transactions Slave: https://eewiki.net/pages/viewpage.action?pageId=7569477 Pmod: https://www.digilentinc.com/Pmods/Digilent-Pmod_ Interface_Specification.pdf MRF24J40: http://ww1.microchip.com/downloads/en/DeviceDoc/39776C.pdf Thank you. spi_slave.vhd spi_master.vhd
  20. The Pmod AD5 looks like a good A/D module for my application, but, is there any way to allow it to work with a 0-10V input if only using 1 channel? If using 1 channel, would a simple voltage divider on the input (to step own the voltage) work (what would the max allowed signal source impedance for this to work? Assume a sample rate of 100 Hz or 1 KHz)? If not, any suggestions?
  21. Hello, I am currently working on a design project that uses an external ADC with a max of 40 MHZ with the Zedboard (Zynq-7000 AP SoC XC7Z020-CLG484). I have never worked with a Zedboard before either. Initially, I'm thinking that the pmod will be able to take in the output of the 8-bit ADC, but I am trying to send that data through the FMC as an output. Trying to look through the schematic for the pin-outs and the data sheet I've read that there are two LA buses within the FMC which are either 0:16 or from 17:33 each having separate banks. There wasn't much more detail about the FMC within the datasheet to really see how the connections work. My question here is, are we able to use just one of those buses, configure and assign pins to be set to the 8-bit digital inputs? Any advice or ideas would be helpful. Thank you.
  22. At the description of the Pmod Step it says that it can drive both motors simultaneously. I want to know if it can drive them with different number of steps on each motor. So the Pmod STEP will be like an 2 in 1 driver or it can only drive identical the motors.
  23. Hello, I would like to control a number of motors using a Nexys 4 DDR and would like to know if the on-board 2x6 Pmod connectors can be used to interface with two 1x6 Pmod adapters? Looking at the pinout of the 2x6 connector, it seems as though this should be legal provided each 1x6 Pmod interface is at the same logic level and reference the same ground. Is this the case? Thanks.
  24. Hello, I have a Nexys 4 DDR board and was looking to interface with motors for a project I am working on. I found the Pmod STEP: Stepper Motor Controller (SKU: 410-267) and had a couple of questions about it: 1) Is this Pmod compatible with my Nexys 4 DDR? 2) How many motors can this Pmod device drive. If more than one can be driven by this Pmod, can each motor be controlled individually or would the same signal be propagated to each motor attached to this Pmod. Thank you!
  25. Hello, I am trying to generate a Digital Output by using the Zynq Processing System. I tought using the Pmod would be easy to handle but I am already failing to design the hardware to activate the Pmod MIO. Do you know a (or similar) tutorial for that? Can you give some advises how to realize it? Thank You! Best regards