Amalthea

This repository contains hardware, gateware, and host software sources for Amalthea - an experimental SDR platform. The main components of the Amalthea hardware are a Lattice ECP5 FPGA, an AT86RF215 radio transceiver, and a Microchip USB3343 USB2.0 PHY (for use with LUNA).

Install

Clone and install:

git clone https://github.com/greatscottgadgets/amalthea
cd amalthea
pip3 install --user --editable '.'

Add custom block path to ~/.gnuradio/config.conf:

[grc]
local_blocks_path = /path/to/amalthea/amalthea/gnuradio/

Hybrid-SDR

The amalthea/gnuradio/ directory contains blocks & example flowgraphs for creating mixed FPGA/SDR designs in GNURadio Companion.

Blocks

hybridsdr.domain.yml - This defines the hybridsdr IO port domain and how connections are made between hybridsdr ports.
amalthea_device.block.yml - This defines the Amalthea Device block, which represents overall device. This block handles gateware elaboration, build, and programming. It will also handle streaming data to/from the host over USB in later versions.
{amalthea_rx,amalthea_demod}.block.yml - These define some HybridSDR blocks, which represent DSP blocks that run on the FPGA itself. When instantiated, these are added as submodules to the overall Amaranth design.