Calypso

Custom CAN decoder to translate CAN messages to MQTT protobuf encoded packets with low latency and a JSON configuration structure.

Foll developer guide here: https://nerdocs.atlassian.net/wiki/spaces/NER/pages/1815773187/Calypso+and+Odyssey+Definitions+Guide

Usage: run -h to see the full usage options and defaults.

Develop setup

To test it on linux, please install:

• mosquitto broker: https://mosquitto.org
• can-utils
• mqttui: https://github.com/EdJoPaTo/mqttui

Developing

Process for testing:

• run mosquitto and leave it open
• run mqttui (from here) and leave it open
• setup the can network:
  • sudo ip link add dev vcan0 type vcan
  • sudo ip link set dev vcan0 up

run cargo run -- -u localhost:1883 -c vcan0

To send a CAN message:

• cansend vcan0 <ID_IN_HEX>#<PAYLOAD_IN_HEX> Ex. cansend vcan0 702#01010101FFFFFFFF
  Now view calypso interpret the can message and broadcast it on mqttui

Simulation Mode

Run from build

• Same setup as above, then use the entry point simulate instead of main
• cargo run --bin simulate
• cargo run --bin simulate -- -u localhost:1883

Run from Docker

• docker pull ghcr.io/northeastern-electric-racing/calypso:Develop
• docker run -d --rm --network host ghcr.io/northeastern-electric-racing/calypso:Develop
• docker run -d --rm -e CALYPSO_SIREN_HOST_URL=127.0.0.1:1883 --network host ghcr.io/northeastern-electric-racing/calypso:Develop