Mixed Signal & Domain Simulation for Embedded Worlds

Download Software	User Guides
Isotel NgSpice Fork GitHub MixedSim Open-Source Library	Introduction to Open Source Spice Mixed Signal & Verilog Simulation Conceptual Simulation of Digital Sine Generator from Eagle Mixed-domain Simulation and Visualization of a Two Wheel Robot with Blender Open-source Software The Easiest Way of Simulating C/C++ Code Together with an Analog & Digital Spice Simulation Platise Ferromagnetic (Non-Linear) Model

---

Mixed Signal & Domain Simulation for Embedded Worlds

Designing embedded applications typically involves analog, digital worlds, and embedded code. To be able to verify the concepts we strive for simulation tools that could verify all the worlds together, not only as a mixed-signal simulation but also to be able to include Verilog, co-simulation with Embedded C/C++ and other languages.

Here we represent how to do a spice simulation using an open-source and free version called ngspice in combination with verilog synthesis software called yosys, Isotel extension which offers simple integration of embedded C/C++ (or other) code, and Isotel ngspice extension for one of the most popular cross-platform software the AutoDesk (CadSoft) Eagle. With the included xspice models one can do a similar to matlab/simulink type of simulation to model a mechanical - mechatronics applications and visualize results with blender.

Content

• Introduction to Open Source Spice Mixed Signal & Verilog Simulation
  • Bringing Open-Source Tools Together
  • Mixed Signal Simulation Concept
  • Demo Project - Digital Sine Generator with PRS and Low-Pass Filter
  • Conclusion
• Conceptual Simulation of Digital Sine Generator from Eagle
  • The Tools
  • ngSpice Support in the Eagle
  • Conceptual PRS Sine Generator in ngSpice - Eagle way
  • Conclusion
• Mixed-domain Simulation and Visualization of a Two Wheel Robot with Blender Open-source Software
  • The Tools
  • Mechanical Model and Simulation of a Two Wheel Robot
  • Exporting Charts, Schematics and Data
  • Visualization of Robot Movements with Blender
  • Conclusion
• The Easiest Way of Simulating C/C++ Code Together with an Analog & Digital Spice Simulation
  • The Tools
  • Digital Force (Current) Motor Controller
  • Inside the Cypress PSoC5
  • Building a Chip with Isotel d_process and Embedded C Code
  • Setting up a Test Bench
  • Running Simulation and Debugging
  • Running a Process Inside a QEMU ARM Emulator or on a Real Target
  • Conclusion
• Platise Ferromagnetic (Non-Linear) Model
  • The Tools
  • Background Theory
  • NgSpice Usage
  • Elmer FEM Usage
  • References

Software Download

• Isotel NgSpice Fork on SourceForge Version 40, Released 1th April 2023

  • Provides Isotel d_process for co-simulation of C/C++/python and any other language

  • Provides Platise Ferromagnetic (Non-Linear) Model

  • Minor patches and is up-to-date with the latest ngspice master branch

• MixedSim Open-Source Library on GitHub

  • ngspice Verilog integration with yosys

  • ngspice Eagle integration with full mixed-signal support

  • examples from above articles

  • Motivation to build a verified standard model library for ngspice