search

nasa / nos3

NASA Operational Simulator for Small Satellites
Other
347 stars 78 forks source link

Instructions on separating FSW and GSW onto different machines #267

Open jlucas9 opened 6 months ago

sdunlap-afit commented 2 months ago

In case it helps someone, I've been working on getting FSW running on a Rapsberry Pi, while the rest is running on another machine. While it's not very clean, I've documented my process:

https://github.com/sdunlap-afit/nos3_hwil

Isgaroth-the-Green commented 1 month ago

@sdunlap-afit Out of curiosity, in your instructions, is the IP address you put in the /etc/hosts file the IP address of the VM running the FSW, or the VM running everything else? Also, did you put the other containers on the host networking as well? And if not, how did those connect?

sdunlap-afit commented 1 month ago

@Isgaroth-the-Green The IP address in /etc/hosts is the IP of whatever host (or VM) you are running everything else on. Specifically, it is the host running the "NOS Engine Server" docker container. This way, when FSW tries to connect to "nos_engine_server" through the host interface, it will get directed to that IP.

Since all other containers are running on the same host, they can stay on the "$SC_NETNAME" network. Adding -p 12000:12000 to "NOS Engine Server" docker run command simply allows access to that port from the host running the FSW.

Isgaroth-the-Green commented 1 month ago

I see. You said that your instructions work for you running it on a Raspberry Pi? You have communication on the DEBUG interface of COSMOS (and, for instance, can successfully send no-op commands)?

sdunlap-afit commented 1 month ago

Ah, I had not gotten that far; I'm still new to nos3. I played around with it a bit and did manage to get it communicating, but there are some more hoops to jump through. This is by no means a clean process, but I made a few hackish changes to get it working:

  1. Add "cosmos IP" to /etc/hosts (same IP as nos_engine_server).

On the main machine:

  1. In "cfg/nos3_defs/cpu1_device_cfg.h" change GENERIC_RADIO_CFG_FSW_IP to the actual IP instead of the nos_fsw hostname.
  2. In "scripts/gsw_cosmos_launch.sh" add -p 5013:5013/udp to the docker run command.

As a side note, folks may need to disable their firewall or open specific ports. For my main machine, I'm using Windows 11, WSL, and Docker Desktop.

image