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Found 3 results

  1. Hello everybody, I am having a problem with the binary counter v12.0 reset SCLR signal, when implementing the Xilinx University Programme, Lab9 Project 3.1, 2015x (1). Environment: OS: Linux (Arch Linux) Xilinx Vivado 2018.3 Digilent Basys3 develoment board Verilog HDL Problem description: The project works as expected (counts up to 5 minutes, 0,1 second resolution), the exception is the counter reset button (BTNC, U18) is pressed it only stops the counting, when released, the counter is not reset, instead it keeps counting where it stopped. I am using the Vivado IP Catalog for generating the clock signal and the 4 binary counters(2) used on each 7-Segiment display digit. The Verilog code and constraint file are attached. The binary counter configuration: Implementing using: Fabric Output width: 4 [3:0] Increment Value (Hex): 1 Restrict Count (Hex): 4, 5, 9, 9 (7seg from left ro right) Count Mode: UP Clock Enable (CE): Checked Synchronous Clear(SCLR): Checked Init Value:(Hex): 0 Synchronous Controls and Clock Enable(CE) Priority: Sync Overrides CE Latency Configuration: Manual, 1 Feedback Latency Configuration: Manual, 0 I suspect I am overseeing/forgetting somewhere a simple detail. Any help/clarification is appreciated. Cheers, Rafael. (1) https://www.xilinx.com/support/documentation/university/Vivado-Teaching/HDL-Design/2015x/Verilog/docs-pdf/lab9.pdf (2) https://www.xilinx.com/support/documentation/ip_documentation/counter_binary/v12_0/pg121-c-counter-binary.pdf lab9_3_1.v Basys-3-Master.xdc
  2. aramosam

    Reprogram (reset) FPGA

    Hello all, I have a Nexys4 DDR and I want to reprogram it, as it's done with "PROG" button. As example I want to connect the IPROG/Program_B signal to be triggered when something happens like the output of my circuit is "1", or using a switch. How can I do that? I've read documentation about multiboot but I don't want to load two bitstreams, only one and reprogram the FPGA with it when I want. I suppose that using the Program_b signal is the way to go but I don't know how I can use it. Some code, tutorial or documentation would be appreciated. Thank you
  3. I am working with the Block Design flow in Vivado 2015.3. I don't seem to be getting how to connect the reset system. My design keeps acting like the clock is being held in reset. When I look closely it appears that the reset signal on the Arty is active low while the reset module in the design expects active high. What am I missing here? Michael Harpe