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Found 11 results

  1. I am trying to use a DAQ to analyze I2C, SPI, and UART signals and then classify them, so they have to be the actual output signals from the Cora Z7 board. However, I am limited due to the project itself to use only the General Purpose I/O pins (IO0-IOA(IO42)). Is it possible to funnel the SPI, I2C, and UARt signals through these pins, or can you only use the specified pins, such as SDA/SCL, MISO/MOSI, or the USB UART bridge to do this?
  2. Hi all, We are looking to use the Arty board for first tests on a machine vision system we are developing, which runs a 72 MHz parallel interface. For ease of testing I was planning to use the Arty board and its I/Os, but I see that it has 200 Ohm series resistors on each pin which will put a limit on the max allowed switching speed. Are there any specifications on the pins when it comes to speed? With 200 Ohms about 5-8 pF is maximum allowed after the resistor for a 72 MHz signal. Else, as I do not have the board yet, are the resistors easy to get to (silkscreen designators for
  3. Hi all, My group and I are brand new to FPGAs, none of us have any expertise whatsoever. As such, we have a few questions about the capabilities of the PYNQ-Z1 board that some of you seasoned experts can help us out with. First: we will have a TTL (3.3 V) pulse sent to the board which is about ~10 ns long. Can the board detect such a pulse from something like a rising or falling edge? We hope to send this pulse via BNC connection - where could we input this on the board? Second: We also need to output a pulse via BNC connection. Where would this pulse be outputted from?
  4. Hi, I have a couple of your Wi-Fire RevB modules - excellent boards so far !!. I have done very little with them yet - waiting for Microchips Harmony to 'settle' - its now usable - at V1.03.01 ;-). I have a basic config in and at least running - I can send data out of UART ports so far. So - I now started mapping the IO pins so that I can add my own chips on an add-on board, and the first problem I hit is trying to map your on-board SDCARD :-(. Your spec says that I can drive it with an SPI - which is what I want to do, BUT it also says that SDI3 needs to be connected to pin C4 (CPU
  5. How to use digilent sparten3E kit for implementation of code generated by system generater? i.e how to use adc dac for giving input and taking output from dac?
  6. Hello, I have a ChipKit Uno rev C with Basic I/O board. I am using MPIDE 20140821. I’m having problems running the IOShield_EEPROM_Demo. I have installed the necessary ChipKit I/O drivers. I have ensured JP6 and 8 are configured correctly on the uno board. The program crashes when reaches the line : IOShieldEEPROM.writeString(0,"ABCDEFGHIJKLMNOPQRSTUVWXYZ"); I have read about this problem on ChipKit online forum, but it does not appear to have been resolved. Would anyone please help. :-) Many thanks Andy
  7. zygot

    Adept SDK

    The documentation for using the SDK software libraries and sample HDL is, let's go with sparse to be kind. I've been using it for a few years but my last project has resulted in unexpected behaviour. I have a design that uses both dpmiref and stmctrl sample HDL components and want to access both in my PC application. I don't get any errors, but when I execute DeppDisable() and then DstmEnable() I sometimes have the contents of epp registers lost. Then, when I try and do a DstmIOEX() transfer UsbStmen never gets asserted and the application hangs until the library code times out. I've done this
  8. Hello everyone, I would like to use all I/O from Pmod connectors (6x8, 48 I/O) but I am not sure that's possible. Actually, I am wondering if we can program the FPGA in order to have 8 single-ended signals for High-Speed Pmods. I think it can work like this. However, the crosstalk issue is mentionned in the reference manual and I don't know how far it can work without problem. Otherwise, I am not focused only on that board. I am looking for one which is able to handle a screen, a mouse, a keyboard, a printer and 45-50 digital I/O in order to make an embedded computer. If someone has any su
  9. I am trying to use older PAL devices with a Vcc requirement of 5 V on the EE . When using a Switch or Push Button in the Static I/O Module, the output levels are: HIGH: 3.3 V LOW: 1.6 V The low level is obviously too high. Is EE's Static I/O not intended for 5 V?
  10. Hello, I'm trying to follow the tutorial posted here: https://reference.digilentinc.com/nexys4-ddr:gsmb I got as far as "Generating Bit File" step. This step fails with the following message in the console: ERROR: [Drc 23-20] Rule violation (NSTD-1) Unspecified I/O Standard - 1 out of 50 logical ports use I/O standard (IOSTANDARD) value 'DEFAULT', instead of a user assigned specific value. This may cause I/O contention or incompatibility with the board power or connectivity affecting performance, signal integrity or in extreme cases cause damage to the device or the components to which i
  11. I'm trying to use Adept I/O Expansion on an Atlys board. I'm following the Adept Software Advanced tutorial (substituting AtlysGeneral.ucf) and all seems well until I attempt to start the I/O connection in the Adept I/O Ex tab. Preparing to program XC6SLX45... Programming... Verifying programming of device... Programming Successful. Warning: I/O Ex Status register not implemented. I'm nost sure where the I/O Ex status register is being called from. Has anyone gotten the extended I/O to work on Atlys? Any clue what I'm missing if I followed the tutorial as it is? Thanks Much,