Exactly 4 minutes until SMA Home Manager is discovered on Raspberry Pi

[TheRealGros]

Paste of Logs:

[17/03/2023, 14:18:23] [homebridge-sma-home-manager] This plugin is taking long time to load and preventing Homebridge from starting. See https://homebridge.io/w/JtMGR for more info.
[17/03/2023, 14:18:23] [homebridge-sma-home-manager] Discovered SMA inverter: { SerialNumber: 3010996510, FirmwareRevision: '1.1.48.R' }
[17/03/2023, 14:18:23] [homebridge-sma-home-manager] Discovered SMA energy manager: no
[17/03/2023, 14:18:24] [homebridge-sma-home-manager] Discovered SMA inverter: { SerialNumber: 3010996510, FirmwareRevision: '1.1.48.R' }
[17/03/2023, 14:18:24] [homebridge-sma-home-manager] Discovered SMA energy manager: no
[17/03/2023, 14:18:25] [homebridge-sma-home-manager] Discovered SMA inverter: { SerialNumber: 3010996510, FirmwareRevision: '1.1.48.R' }
[17/03/2023, 14:18:25] [homebridge-sma-home-manager] Discovered SMA energy manager: no
[17/03/2023, 14:18:26] [homebridge-sma-home-manager] Discovered SMA inverter: { SerialNumber: 3010996510, FirmwareRevision: '1.1.48.R' }
[17/03/2023, 14:18:26] [homebridge-sma-home-manager] Discovered SMA energy manager: no
[17/03/2023, 14:18:27] [homebridge-sma-home-manager] Discovered SMA inverter: { SerialNumber: 3010996510, FirmwareRevision: '1.1.48.R' }
[17/03/2023, 14:18:27] [homebridge-sma-home-manager] Discovered SMA energy manager: no
[17/03/2023, 14:18:28] [homebridge-sma-home-manager] Discovered SMA inverter: { SerialNumber: 3010996510, FirmwareRevision: '1.1.48.R' }
[17/03/2023, 14:18:28] [homebridge-sma-home-manager] Discovered SMA energy manager: no
[17/03/2023, 14:18:29] [homebridge-sma-home-manager] Discovered SMA inverter: { SerialNumber: 3010996510, FirmwareRevision: '1.1.48.R' }
[17/03/2023, 14:18:29] [homebridge-sma-home-manager] Discovered SMA energy manager: no
[17/03/2023, 14:18:30] [homebridge-sma-home-manager] Discovered SMA inverter: { SerialNumber: 3010996510, FirmwareRevision: '1.1.48.R' }
[17/03/2023, 14:18:30] [homebridge-sma-home-manager] Discovered SMA energy manager: no

Config:

Screenshots:

Inverter:

• Model:

Homebridge Environment:

• Node.js Version:
• NPM Version:
• Homebridge Version:
• homebridge-sma-inverter Version:
• Operating System: Raspbian / Ubuntu / Debian / Windows / macOS / Docker / other

[wimleers]

Oh no!

1. The documentation strongly recommended you to use this plugin as a child bridge to the high frequency communication with the SMA Home Manager and subsequent HomeKit updates. Please do that and then it will never be able to block your Homebridge instance from launching anymore 😊
2. Can you please share the log entries from this plugin that precede the ones listed here? There should be something in there about finding the inverter!
3. If you install https://apps.apple.com/be/app/discovery-dns-sd-browser/id305441017?l=nl, launch it and then look at the HTTP view, which services do you see? Can you upload a screenshot? 🙏
4. Which model inverter do you have?

[wimleers]

This means that the logic that was introduced to solve #3 causes problems for at least some users 😔

But … I’m sure that once we hear back from @TheRealGros, I’ll be able to figure out a way to make this work 😊

[TheRealGros]

After exactly 4 minutes throwing hundreds of log entires it suddenly stoped throwing log entries with the found SMA energy manager…
It seems that it took 4 minutes to find something and then started working

[17/03/2023, 16:48:19] [homebridge-sma-home-manager] Discovered SMA inverter: { SerialNumber: 3010996510, FirmwareRevision: '1.1.48.R' }
[17/03/2023, 16:48:19] [homebridge-sma-home-manager] Discovered SMA energy manager: no
[17/03/2023, 16:48:20] [homebridge-sma-home-manager] Discovered SMA inverter: { SerialNumber: 3010996510, FirmwareRevision: '1.1.48.R' }
[17/03/2023, 16:48:20] [homebridge-sma-home-manager] Discovered SMA energy manager: no
[17/03/2023, 16:48:21] [RPi] localhost: Frequency: set to 1500MHz (from 1000MHz)
[17/03/2023, 16:48:21] [RPi] localhost: Load: set to 0.17 (from 0.22)
[17/03/2023, 16:48:21] [homebridge-sma-home-manager] This plugin is taking long time to load and preventing Homebridge from starting. See https://homebridge.io/w/JtMGR for more info.
[17/03/2023, 16:48:21] [homebridge-sma-home-manager] Discovered SMA inverter: { SerialNumber: 3010996510, FirmwareRevision: '1.1.48.R' }
[17/03/2023, 16:48:21] [homebridge-sma-home-manager] Discovered SMA energy manager: no
[17/03/2023, 16:48:22] [homebridge-sma-home-manager] Discovered SMA inverter: { SerialNumber: 3010996510, FirmwareRevision: '1.1.48.R' }
[17/03/2023, 16:48:22] [homebridge-sma-home-manager] Discovered SMA energy manager: no
[17/03/2023, 16:48:23] [homebridge-sma-home-manager] Discovered SMA inverter: { SerialNumber: 3010996510, FirmwareRevision: '1.1.48.R' }
[17/03/2023, 16:48:23] [homebridge-sma-home-manager] Discovered SMA energy manager: no
[17/03/2023, 16:48:24] [homebridge-sma-home-manager] Discovered SMA inverter: { SerialNumber: 3010996510, FirmwareRevision: '1.1.48.R' }
[17/03/2023, 16:48:24] [homebridge-sma-home-manager] Discovered SMA energy manager: no
[17/03/2023, 16:48:25] [homebridge-sma-home-manager] Discovered SMA inverter: { SerialNumber: 3010996510, FirmwareRevision: '1.1.48.R' }
[17/03/2023, 16:48:25] [homebridge-sma-home-manager] Discovered SMA energy manager: { Model: 372, SerialNumber: 3011955078, FirmwareRevision: '2.11.5.R' }
[17/03/2023, 16:48:25] Initializing platform accessory 'Live power flow'...
[17/03/2023, 16:48:25] Initializing platform accessory 'Recent power flow'...
[17/03/2023, 16:48:25] Initializing platform accessory 'Today's energy flow'...
[17/03/2023, 16:48:25] Initializing platform accessory 'Off Grid energy signal'...
[17/03/2023, 16:48:25] Initializing platform accessory 'No Sun energy signal'...
[17/03/2023, 16:48:25] Homebridge v1.6.0 (HAP v0.11.0) (homebridge-sma-home-manager) is running on port 49684.

[wimleers]

Woah! It takes at most a few seconds here!

Maybe the SMA Home Manager was just restarting?

If you restart Homebridge, does it happen again?

[wimleers]

Either way, I’ll tweak the logging so it’s less noisy.

[TheRealGros]

@wimleers Yes, tried it 3 times within 2 hours, takes approximately 4 minutes

[wimleers]

Woah! Bizarre. Could you please describe your home networking setup? And specifically the path network packets have to travel to go from Homebridge to your Home Manager.

(I have the impression that multicast works unreliable on your network.)

[wimleers]

Did some research on this and failed to find anything related to zeroconf/Bonjour/mDNS/DNS-SD discovery latency.

Then I took another look at your logs and noticed … that it's not actually the inverter that is taking 4 minutes to be found, it's your SMA Home Manager! 😅

That mechanism has not changed at all since 1.0.0. That means that this MUST be a completely independent problem. SMA's Home Manager 2.0 is always broadcasting its information using multicast, (specifically IGMP v3.

We're just telling the operating system that we are also interested in it. But it also requires those packages to travel freely between your SMA Home Manager 2.0 and the device that your Homebridge instance is running on. If that's not happening, then there likely is a switch, router or access point on the network path between them that does not support/is not correctly configured for IGMP.