Tag: Yosys
ECP5 FPGA Clock Generation
ECP5 FPGA Clock GenerationYosys and nextpnr have excellent support for Lattice ECP5 FPGAs. However, without using the ECP5 PLL (phase-locked loop), you’re stuck running at the speed of your dev board oscillator. This post outlines the architecture of ECP5 PLL and provides several practical examples to get you started with generating custom clock frequencies. Generating your own clock frequencies is much more straightforward than it first appears. Read More...
iCE40 FPGA Toolchain on Linux
iCE40 FPGA Toolchain on LinuxIn this post, I provide a quick guide to building an open-source FPGA toolchain for iCE40 boards, such as iCEBreaker, on Linux. This guide is designed for Ubuntu or Pop!_OS 20.04, but should be straightforward to adjust to your own distro. Read More...
FPGA Tooling on Ubuntu 20.04
FPGA Tooling on Ubuntu 20.04In this post, I test common FPGA tools for compatibility with Ubuntu 20.04 (AKA Focal Fossa), and my regular desktop OS: Pop!_OS 20.04. These tests are in no way exhaustive: I have tried using the applications as I usually do to exercise the main functionality. I have also included instructions for building the tools from source when available. Read More...