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Found 6 results

  1. Hello everyone, I have a question about the role of the USB port on the nexys A7 board. It default acts as host mode. Now I want to use it as device mode. Am I able to change its configuration and make it act as device mode? Thanks!
  2. Hello. I have a Nexys A7 dev board. I need to connect in fast pulses. They typically connect with 50 Ohm characteristic impedance. A typical pulse is 8 ns wide at the half points. I do not see any general IO on the A7 that has controlled impedance. Any suggestions welcome. I can certainly make a little daughter buffer board. Thanks.
  3. Hi everyone, I am trying to turn my NexysA7 FPGA into a relatively simple game controller. Naturally, I want to send data from the FPGA to my computer using the HID port since the communication is bidirectional but I don't think I totally understand how to make my PC the host rather than the FPGA. Are there any suggestions on how to do this? (Worth noting that I am relatively new to this) Thanks for any help in advance!
  4. I have a question regarding the Nexys 4 DDR and his successor the Nexys A7: Will a working VHDL-Program, written for the Nexys 4 DDR XC7A100T-1CSG324C, work on an Nexys A7 XC7A100T-1CSG324C? (written in VHDL constructed in Vivado, using the constraint-file „Nexys-4-DDR-Master“ from your resource center [https://github.com/Digilent/digilent-xdc/] ) Is it possible to simply generate the Bitstream of this Program (made for the Nexys 4 DDR XC7A100T-1CSG324C) and download it onto the Nexys A7 XC7A100T-1CSG324C without making any changes to the code? Even if the Constraint-File for the Nexys-4-DDR-Master is used? The only difference in the Constraint-Files of the boards is the IOStandard for the Pmod Header JXADC, changed from LVDS to LVCMOS33. There shouldn‘t be any Problems since the voltage range of the previously used LVDS is within the range of the voltage for the LVCMOS33, right? Will a VHDL-Program that doesn‘t even use the Pmod Header JXADC work without problems? Or do I still have to alter something in my existing programm to make it work on a Nexys A7 XC7A100T-1CSG324C? Thanks in advance!
  5. Hey everyone! I am considering buying a Nexys A7 100T in India (through Digilent for the academic pricing). Can someone here please guide me on the import duties if you have tried that before? From the HSN Code it looks like it is supposed to be 18% but I have heard from friends where they have even paid 50% for some electronics imports. Thanks!
  6. I left my board connected to my laptop and power to the board was abruptly cut off when the laptop died. I tried to connect the board to a different computer and realized that it no longer turned on. The computer's device manager shows that something is plugged in, but Adept and Vivado are unable to recognize that a device is connected. I was planning to restore the board to it's default setting on Vivado by using a .bin file but received the following error message: "ERROR: [Labtools 27-2269] No devices detected on target localhost:3121/xilinx_tcf/Digilent/210292AA77E6A. Check cable connectivity and that the target board is powered up then use the disconnect_hw_server and connect_hw_server to re-register this hardware target. ERROR: [Common 17-39] 'open_hw_target' failed due to earlier err." I used a voltmeter to test the voltage across the on/off switch and was getting around 3.3V but now get 0.003V. When I tested the switches that control the on-board LEDS, the also produced around 0.003V. Is there a solution to help me with this as the board is brand new?
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