shelly script to victron mqtt - using https://github.com/mr-manuel/venus-os_dbus-mqtt-grid

config.ini

; CONFIG FILE
; GitHub reporitory: https://github.com/mr-manuel/venus-os_dbus-mqtt-grid
; remove semicolon ; to enable desired setting

[DEFAULT]
; Set logging level
; ERROR = shows errors only
; WARNING = shows ERROR and warnings
; INFO = shows WARNING and running functions
; DEBUG = shows INFO and data/values
; default: WARNING
logging = WARNING

; Device name
; default: MQTT Grid
device_name = MQTT Grid 40

; Device type
; grid = Grid
; genset = Generator
; acload = AC Load (does not impact calculations, shows only under devices)
device_type = grid

; Device VRM instance
; default: 100
device_instance = 40

; Specify after how many seconds the driver should exit (disconnect), if no new MQTT message was received
; default: 60
; value to disable timeout: 0
timeout = 10

; used when no voltage is received
voltage = 230

; used when no frequency is received
frequency = 50

; power limit per phase, to filter out wrong values
; default: 23000
; which are 100 A at 230 V
power_threshold_per_phase = 23000


[MQTT]
; IP addess or FQDN from MQTT server
; "localhost" is allowed, can be used if mqtt server is enabled in venusOS
broker_address = localhost

; Port of the MQTT server
; default plaintext: 1883
; default TLS port: 8883
broker_port = 1883

; Enables TLS
; 0 = Disabled
; 1 = Enabled
;tls_enabled = 1

; Absolute path to the Certificate Authority certificate file that is to be treated as trusted by this client
;tls_path_to_ca = /data/keys/mosquitto.crt

; Disables verification of the server hostname in the server certificate
; 0 = Disabled
; 1 = Enabled
;tls_insecure = 1

; Username used for connection
;username = myuser

; Password used for connection
;password = mypassword

; Topic where the grid data as JSON string is published
; minimum required JSON payload: {"grid": { "power": 0.0 } }
topic = power/gridmeter

mqtt-status.js

//https://github.com/mr-manuel/venus-os_dbus-mqtt-grid

let CONFIG = {
  switchId: 0,
  MQTTPublishTopic: "shellypro3em-08f9e0e9cf04/events/rpc",
};

let count =0;
let power = 0;

function timerCode() {
  let data = Shelly.getComponentStatus("em:0");
  let data2 = Shelly.getComponentStatus("emdata:0");
  let announceObj = {
    "src": "shellypro3em-08f9e0e9cf04",
    "dst": "shellypro3em-08f9e0e9cf04/events",
    "method": "NotifyStatus",
    params: {
      'em:0': data,   
      },
  };
  
  power = power * 0 + ((data.b_act_power+data.c_act_power) * 1.0);
  
  
  let mqtt = {
    "grid": {
        "power": power,                
        "current": data.b_current  +data.c_current     ,  
        "energy_forward":  data2.c_total_act_energy / 1000 + data2.b_total_act_energy / 1000, 
        "energy_reverse":  data2.c_total_act_ret_energy / 1000 + data2.c_total_act_ret_energy / 1000,        
        "L1": {
            "power": data.b_act_power    ,
            'voltage': data.b_voltage   ,
            'current': data.b_current  ,
            'power_factor': data.b_pf,
            'frequency': data.b_freq,
            "energy_forward": data2.b_total_act_energy / 1000, 
            "energy_reverse": data2.b_total_act_ret_energy / 1000,  
        },
        "L2": {
            "power": data.c_act_power    ,
            'voltage': data.c_voltage    ,
            'current': data.c_current     ,
            'power_factor': data.c_pf,
            'frequency': data.c_freq    ,
            "energy_forward":  data2.c_total_act_energy / 1000, 
            "energy_reverse":  data2.c_total_act_ret_energy / 1000,  
        },
        "L3": {
            "power": 0            
        }
    }
};
  
  count++;
  
  if (count > 2) {
     //MQTT.publish(CONFIG.MQTTPublishTopic, JSON.stringify(announceObj), 0, false);
     count=0;
  }
  MQTT.publish("power/gridmeter", JSON.stringify(mqtt), 0, false);
};

Timer.set(
  /* number of miliseconds */ 500,
  /* repeat? */ true,
  /* callback */ timerCode
);