Forum Discussion

Asifa's avatar
Asifa
Icon for New Contributor rankNew Contributor
11 months ago

NIOS ii/e clock frequency differ from real-time running frequency.

I have created a Qsys circuit using Nios II/e, with a clock frequency of 50 MHz. Other peripherals are also connected, as shown in the attached photo. I wrote a program in Eclipse, and when I checked...
Platform
Asifa's avatar
Asifa
Icon for New Contributor rankNew Contributor
11 months ago

I am working on generating a precise 1 µs timing. Here are the steps I followed:

Here are the steps I followed:

  1. Made the connections: Nios II/e processor with the clock and other desired components(See attached picture).
  2. Compiled the project.
  3. Configured the Pin Planner.
  4. Recompiled the project.
  5. Uploaded the .sof file to the FPGA using the Programmer tool.
  6. Used the .sopcinfo file to write code in Eclipse.

However, when I run the code and check the toggling of the GPIO pins, I am not getting the desired output. I specified a 1 µs toggling of the pin in the program, but I am observing 85 µs instead.

Can you help me resolve this issue?