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Found 190 results

  1. NiLo

    Nexys 3 Pmod Nav Problem

    Hi, I am doing a project on Nexys 3 FPGA board and I am trying to connect Pmod Nav in order to display barometric pressure on PmodOLEDrgb. I am in trouble with Pmod Nav. I have created a Controller that reads via SPI Protocol the 24 bits of 3 data registers and then I have divided this result with value 4097 counts/hPa as it is mentioned in LPS25HB, in order to take the absolute pressure in hPa. The final value should be in range of 260- 1260 hPa. The problem is that the final absolute value of barometric pressure, that I take, is 4095, which means that all bits are stored in 3 registers PRESS_OUT_H, PRESS_OUT_L and PRESS_OUT_XL take the value of '1'. The pins that I have connected are SDI, SDO, SPC, CS_ALT. I have no idea on how to deal with this problem. I would appreciate if someone helped me. Thank you Nik
  2. Serial digital interface (SDI) is a digital video interface used with the most of professional video cameras. It uses BNC connector and operates at speeds of 3 Gb/s or about, depending on the standard. The more detailed specification can be found in wikipedia. Most of the SDI adapters for FPGA use FMC connectors, like this one. There is no FMC connector on Zybo Z7 board, but it does have multiple PMOD ports. Could they probably substitute? If some simple extra circuitry is required, we maybe could build it on the top of some generic PMOD adapter like this. My major doubts are, would such interface be fast enough? I am not aware at which frequency Zybo PMOD port and the custom circuitry attached to it could operate.
  3. Our team has been using the Digilent PmodCAN CAN-Spi module and have been running into issues related to reading the messages from the CANBus. We are using the mcp_can library that is compatible with this module to read messages from the CANBus, but the messages are coming in out of order and will sometimes miss messages when the CANBus is loaded with a higher number of messages in a short amount of time. I have attached the code I am using that returns messages out of order or misses messages completely. The code will miss around half of the messages when the CANBus has a Bus message load higher than 40% and some of the caught messages are out of order. mcp_can.h.txt mcp_can_dfs.h.txt CANTest.ino.txt mcp_can.cpp.txt
  4. Hello All, I am getting a make error when attempting to build the PMOD ESP32 driver in Xilinx SDK. I will attach a picture of the the error and my SDK flow. I included all the path directories for the console application folder in the C/C++ Build Directories. The problem is essentially that "XPAR_PS7_UART_0_DEVICE_ID" doesn't exist. Is it under a new name perhaps? Should I export "Main.C" to the "src" folder? Any help is appreciated! **This is the line of code that is giving me the issue** "#define HOST_UART_DEVICE_ID XPAR_PS7_UART_0_DEVICE_ID"
  5. Hey All, I am trying to make a simple IP block design in Vivado 2018.3 to test the ESP32 PMOD out using AT commands for data transmission. I will attach a picture of my current block diagram to this post. I am getting a critical error (reference below) that says the IP has a packaged board value of "digilentinc.com:cora-z7-10:part0:1.0" which is for the Zybo z7 board. My questions are: Q1)Will this design work regardless of this error, as the Zybo and Zed boards are similar and both run off the zynq-7 architecture? Q2)If the answer to Q1 is "no", is there a method of adapting this IP for the Zedboard? (I should be using the latest IP library from Digilent) [IP_Flow 19-4965] IP PmodESP32_axi_gpio_0_0 was packaged with board value 'digilentinc.com:cora-z7-10:part0:1.0'. Current project's board value is 'digilentinc.com:zedboard:part0:1.0'. Please update the project settings to match the packaged IP.
  6. Hi , I am confronting dimensions mismatch in my design . So could I solve this issue by manipulating the dimension of PmodDA3_0 (pin : AXI_LITE_GPIO_wdata[31:0] ) , and keeping the rest of my design untouched ? If yes , how ? If no, what should I do? Kindly see the attached picture . Kind Regards
  7. Ahmed Alfadhel

    PmodDA3

    Hi , I am wonder why there are many Pins in the PmodDA3 IP core, while there are only six in the actual model ! Kindly, your explanations. I attached two pictures. Thanks,
  8. Ahmed Alfadhel

    Pmod

    Hi , I have encountered this error during runnuing Vivado Simulator : "formal port ja_pin3_io of mode inout cannot be associated with actual port ja_pin3_io of mode out " What I can do for avoid this error ? Kind Regards
  9. Hi, I wonder how fast I can trigger the HB3 Pmod (H-Bridge). Neither the datasheet or schematic give the references for its transistors and FETs. Is there somewhere I can find this information? Datasheet: https://reference.digilentinc.com/reference/pmod/pmodhb3/reference-manual Schematic: https://reference.digilentinc.com/_media/reference/pmod/pmodhb3/pmodhb3_sch.pdf
  10. Hello Technicians, I want to output a signal (FHSS_TX) in 2nd picture via a Pmod_DA module. In fact, I have the IP core of this Pmod (Pmod_DA3) , but I don't know how to merge the second design (my project in 2nd picture) with the first (Pmod & microbalze 1st picture) to out put my signal via the Pmod_DA3 , Kindly , find the attached pictures . Looking forward your supports . Thanks in advance.
  11. Ahmed Alfadhel

    Pmod

    Hi , Am I need to use Microblaze processor with Pmod ? In fact I read that in this link : https://reference.digilentinc.com/learn/programmable-logic/tutorials/pmod-ips/start Is there any way simpler to use Pmod IP ? Thanks in advance.
  12. Hi all, I've built with the Nexyx4 DDR board a system running Linux. In my running HW design, I've added the onboard temperature sensor of the board and the PMOD A connector to connect a I2C TMP3 temperature sensor. The HW interface for the onboard temperature sensor is the AXI IIC interface. For the TMP3 sensor with the Digilent's vivado library (as explained in: https://reference.digilentinc.com/learn/programmable-logic/tutorials/pmod-ips/start), it's the AXI LITE IIC interface. With the Linux I2C tools, I see the onboard sensor: nexys4ddr:/# uname -r 4.14.0-00493-gb68293ad2c93-dirty nexys4ddr:/# i2cdetect -y 0 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- 4b -- -- -- -- 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- -- And I can read temperature with the Linux I2C API: nexys4ddr:/# tsttemp TEMP=29.2 oC nexys4ddr:/# But I don't see the I2C TMP3 sensor. My questions are: - The vivado TMP3 instance has a I2C interface (AXI LITE IIC). Can I use the Linux I2C API? If yes, on the PMOD ja port, what are the pins of the connector corresponding to SCL, SDA (easy for ground and 3V3 ;-)? I didn't find this information in the Digilent's vivado library. - If I I can't use the Linux I2C API, I must generate by hand and by software the SCL and SDA signals and what is the role of AXI LITE IIC interface? In this case, would it better to use directly the IIC AXI interface as with the onboard sensor and precise after in a XDC file connexions between to the PMOD A port and TMP3 sensor? Thank you for your help. Pat.
  13. Hi, I want to connect Pmod to Arduino Uno. From Arduino pins we get 5V so does this refer only to power supply (which we have on Arduino board) or for others pins too? Is it safe to connect it directly to Arduino or I have to use voltage dividerfor other pins? Thank you.
  14. Hi, I have started using PMOD BLE recently and I can make a connection in between BLE and PC using a terminal (with Nexys4DDR making a direct connection in between). However, when I write a VHDL code, describing what I made on the terminal one by one, the BLE device stucks at rebooting. For both applications I use the following sequence that is described in "RN4871_user_guide.pdf" page 59 : - Send $$$ - Wait a second - Send SS,40<CR> (this is to select UART Transparent feature only) - Wait a second - Send R,1<CR> - Wait a second - Wait for an ASCII entry but, at "R,1<CR> ", the BLE device turns the blue LED on (which is LD1 on schematic) and it does not shuts it off no matter what. While so, (I mean when the LED is ON) the iOS application SmartDiscover (or anyother terminal) cannot see the module. So, I cannot reach the device at all. Besides, the device returns this when connected via PC terminal (through cable) => CMD> AOK<\r><\n>CMD> Rebooting<\r><\n>%REBOOT% and returns this when FPGA communicates with the device directly => CMD> AOK<\r><\n>CMD> Rebooting<\r><\n> so, it does not return me %REBOOT% string, but seems like it stucks at some point where it is trying to reboot itself. Any help with this would be very nice at this point, Thanks in advance, Bera
  15. Hello, I've been having a lot of fun with the VGA Pmod. I thought other forum members might appreciate a couple of tutorials I've produced with it. Part 1: Intro to VGA and basic animation: https://timetoexplore.net/blog/arty-fpga-vga-verilog-01 Part 2: Bitmap display using your own image: https://timetoexplore.net/blog/arty-fpga-vga-verilog-02 Both are written in pure Verilog, so it's (hopefully) easy to understand what's going on and adapt for your own projects. Feedback welcome, Will
  16. Hello everyone I am trying to interface the Pmod Gyroscope with myRio with the code provided in the myRio Project Essentials Guide. I have made connections as per the diagram in the guide and there is no problem with it. When I run the VI, when the sensor is stationary the value of x displacement should be zero and not change but it is incrementing with time even when I am not moving the sensor. You can check the problem in the YouTube link I have shared bellow. There is no problem with the hardware since I have tried the same program with other gyroscope of same IC. The program files are attached below. Please help it is very important for me to get the sensor working ASAP Video Link: https://youtu.be/dwFc86p1KlA Connection Diagram: Code: Main.vi Gyroscope demo.aliases Gyroscope demo.lvlps Gyroscope demo.lvproj
  17. Akshay Bhat

    Pmod AD5

    Hello, I am also using the PMOD AD5 to get the values of two sensor one is voltage and another is temperature , but the problem is i wanted to get the value of the only voltage first then only temperature, what i did is i just added a function of the temperature to it with the same voltage code that is given in the example of the AD5 driver, i change the configuration register values to byte[1]=0x04 byte[2]=0x03 byte[3]=0x18 so that i can have the enable the 2 single channels and the value be in uni polar by doing this i am getting the values voltage is: 2.5v (which what i set in the POT) temperature is : 99.99 (which id taking the data of channel one and giving me the value) in next cycle voltage is taking the value from the channel 2 and giving me the value , here the temperature what i am getting is almost correct but i need it accurate . So can u please provide me with the code that will help me getting the values from the two different channel one after the other Thanks & Regards Akshay
  18. Hello, I am trying to display text on an image using the libraries provided . I am able to load the image and print text separately but when an image is loaded and i try to display text on it, it does not seem to print. How can i print text on a image loaded from sd card present in Pmod MTDS. With Regards, Ajs
  19. Hello , I am using the Pmod AD5 and Pmod MTDS on the Zedboard I am connecting the pmod AD5 with a simple POT and giving different values it. From the demo example in the mtds ip I got to know that display images are store in the file with .bmp in SD card then invoked when needed My problem is i have nearly 500 values in to be displayed so , my question Is there any way to dynamically generate the .bmp file to the MTDS and display it when we give the different values from the AD5 ? Regards Akshay
  20. AJS

    Pmod MTDS

    Hello am new to this to and this is bit confusing. Am working with Pmod MTDS and trying to use Pmod MTDS IP in zedboard board. I have used the library and board files as stated by Digilent. Problem is when i use MTDS in spi interface mode and i get only 4 pins in IO planing list and reset pin (pin 8 in Pmod MTDS device) is missing. Can anyone tell me how to get that reset pin or am i doing it worng? 2nd question is what data has to be written to the mtds to display it in device? I mean if i need to display number " 1 " then what am i supposed to send to MTDS ip? And last question what is pmod interface port? I see 2 interface geting added when i include Vivado digilent IP library in IP settings in vivado , what are those interface port? Am sorry for asking silly question but i am not finding ans to these anywhere else. Thank You AJS
  21. We are suppose to add a library from here: https://github.com/Digilent/vivado-library/releases and add it to the projects IP repository list to be able to add the block in the IP Integrator. I have checked all the releases and i cant find the Pmod NIC100 anywhere, i think its called PmodNIC, but correct me if am wrong because i haven't seen it anywhere anyway. Until i find this IP, the Pmod is just another paperweight on my desk along with my stalled project, Please help. I am using the Arty A7: Artix-7 FPGA Development Board.
  22. Hello, I am unclear on whether the PmodIA works with Arduino. If I get the digilent arduino core will I be good to go, or do I need a digilent board to use it? Also, is it possible to modify the pmodia to use it on lower frequencys/impedance so it could be used for batteries? Thank you!
  23. Hello, I have purchased a PMOD ESP32 for evaluation with Renesas Synergy. I have installed the required resources from the renesas synergy pmod esp32 application note. I also have the sample project up and running on the target demo board (PK-S5D9). I am communicating with the module through Tera Term and USB CDC. I am able to communicate with the module, and the module responds to the "get_mac" command: The issue I am having is that the command line options for "scan" and "connect" do not work. The module seems to be hang, and nothing is displayed in Tera Term after about 10 minutes of issuing the "scan" or "connect" commands. For the "scan" command, I get an "OK" response, but no APs are displayed in Tera Term. send command to module module response The Tera Term output remains as the image below for more than 10 minutes, with no APs listed. For the "connect" command, I am able to set the provisioning (removed the SSID and passphrase from screenshots): Send the "connect" command: Logic analyzer capture: After more than 10 minutes, there is no "OK" response, and the Tera Term displays the same info: While there is no logic analyzer activity. What could cause this type of behavior? Did I miss something in the project configuration? Is anyone else experiencing this issue? I am using e2studio 5.4.0.023, SSP 1.3.3. The ESP32 module has been updated to version 1.1.1, using the flash download tools v3.6.4.
  24. Hello, I'm trying to configure my Basys 3 board to control a DC motor through the Pmod connector with an HB5 within Vivado. I've followed all steps in the Pmod IP tutorial but I'm stuck at 3.3. I'm not sure which specific pmod ip block I should use or how exactly to connect it. I couldn't find one corresponding to the hb5. Any advice would be greatly appreciated. Additional points: I don't need clocks or interrupts fed to the pmod I'm simply trying to control the operation (on/off) of the motor through one of the on-board switches. Thanks, gd
  25. Howdy. I have what I think is a fairly basic question: Which (non-FPGA) processor boards support Pmod modules? Is there any chance to see a table that shows each of the current ARM and PIC32 processor boards down a left-hand column and then the quantity of each of the Pmod ports (of each different configuration) on the middle of the chart? Thanks