Add support for Shelly EM (2 channels) meter

[efrencd]

Currently EVCC has a template for Shelly 3EM (3 channel Shelly Meter).

Theres is also a 2 channel cheaper model which is not included as a template in EVCC.

Product description in Shelly website. https://shelly.cloud/products/shelly-em-smart-home-automation-device/

It would be nice to add support for it.

Thanks!

[andig]

/cc @thierolm

[VolkerK62]

@efrencd I use this also. You know, that you can use the http-plugin for integration?

[efrencd]

I didn't know. I'll try.

Anyway a direct integration with a template would be welcomed.

Thanks!

[thierolm]

Hi @efrencd , have U tested the shelly charger or shelly-pm1 meter template? U are able to define the channel in order to select P1 (channel = 0) or P2 (channel = 1) switch+meter ...

[VolkerK62]

Hi @thierolm , I have Shelly EM in use. I tried shelly-1pm template. It doesn´t work.

- name: WP_power # Verbrauch (charger) Wärmepumpe
  type: template
  template: shelly-1pm
  host: 192.168.178.21
  channel: 1

result evcc meter

WP_power
--------
Power: invalid channel, missing power meter

[VolkerK62]

So funktioniert es (custom)

- name: WP_power # Verbrauch (charger) Wärmepumpe
  type: custom
  power:         # Shelly EM Stromzange 2
    source: http
    uri: http://192.168.178.21/emeter/1
    jq: .power  

[thierolm]

Hi @VolkerK62 , could U pls provide me a trace log: evcc meter -l trace

[VolkerK62]

@thierolm Here the template version:

pi@raspberrypi:~ $ evcc meter -l trace
[main  ] INFO 2022/08/31 09:16:30 evcc 0.100 (98d9a938)
[main  ] INFO 2022/08/31 09:16:30 using config file /etc/evcc.yaml
[shelly] TRACE 2022/08/31 09:16:31 GET http://192.168.178.21/shelly
[shelly] TRACE 2022/08/31 09:16:31 {"type":"SHEM","mac":"C45BBE77DE81","auth":false,"fw":"20220809-125130/v1.12-g99f7e0b","discoverable":true,"longid":1,"num_outputs":1,"num_meters":0,"num_emeters":2,"report_period":1}
WP_power
--------
[shelly] TRACE 2022/08/31 09:16:31 GET http://192.168.178.21/status
[shelly] TRACE 2022/08/31 09:16:31 {"wifi_sta":{"connected":true,"ssid":"KAS1","ip":"192.168.178.21","rssi":-52},"cloud":{"enabled":false,"connected":false},"mqtt":{"connected":false},"time":"09:16","unixtime":1661930190,"serial":16567,"has_update":false,"mac":"C45BBE77DE81","cfg_changed_cnt":0,"actions_stats":{"skipped":0},"relays":[{"ison":false,"has_timer":false,"timer_started":0,"timer_duration":0,"timer_remaining":0,"overpower":false,"is_valid":true,"source":"http"}],"emeters":[{"power":29.72,"reactive":35.57,"pf":0.64,"voltage":231.89,"is_valid":true,"total":226709.4,"total_returned":312236.8},{"power":1.56,"reactive":0.00,"pf":0.00,"voltage":231.89,"is_valid":true,"total":101094.1,"total_returned":0.5}],"update":{"status":"idle","has_update":false,"new_version":"20220809-125130/v1.12-g99f7e0b","old_version":"20220809-125130/v1.12-g99f7e0b"},"ram_total":51072,"ram_free":35868,"fs_size":233681,"fs_free":156373,"uptime":235549}
Power: invalid channel, missing power meter

[VolkerK62]

Ahh, meter vs emeter?? "num_meters":0,"num_emeters":2

[thierolm]

Ahh, meter vs emeter?? "num_meters":0,"num_emeters":2

Jepp, da haben die Shelly Entwickler mal wieder nix von JSON Standardisierung gehalten ... :-(

@andig: Ich schau mal, dass ich am WE einen entsprechenden Erweiterungs-PR aufmache.

[thierolm]

@VolkerK62 + @efrencd Could U pls check test the PR? I do not have an Shelly EM device ...

[VolkerK62]

Sorry, da hab ich absolut keine Ahnung, wie ich das machen könnte .... das hatten wir vor einiger Zeit schon mal ;-) Wenn andig es ins nightly nimmt, kann ich es gleich morgen früh testen.

[andig]

Ist drin

[VolkerK62]

werd ich morgen mal testen. Aber vorher noch ne blöde Frage: nehm ich das Shelly-1pm Template oder hat es ein eigenes bekommen?

[thierolm]

nimm das Shelly-1pm template

[VolkerK62]

@thierolm ist usage: pv optional oder zwingend? Ich nutze den Shelly EM als battery und als charge meter. Aktuell als custom ohne usage.

[thierolm]

Im Meter Template ist pv aktuell die einzige Option und muss so gesetzt werden. Du müsstest das so definierte Meter aber auch als battery meter in der evcc.yaml definieren können. Wenn du den Shelly als Charger nutzen willst, musst du das shelly Charger Template nehmen.

[VolkerK62]

Top job. Funktioniert prima. Ich bin immer wieder erstaunt, was und wie schnell alles möglich ist ;-)

[thierolm]

Thx fürs Testen! Schönes WE!