# Silla Prism Solar custom integration

This repository contains a custom integration to integrate a Silla Prism EVSE inside HomeAssistant

Installation

Prerequisites: A working MQTT server.

1. Configure the Prism EVSE to work with your MQTT server has shown in manual.
2. Configure and enable the MQTT integration for HomeAssistant
3. Install the custom integration from this repository

Usage

1. Add integration Silla Prism using the dashboard

2. Keep note of base path for all Prism topics

   

3. Topic Set the the base path for all Prism topics must be the same set in the Prism configuration page seen before. For now it is important to leave a / at the end of the topic as shown in the picture below)

4. **number of ports ** If you have more the one port (like Prism Duo) on your device set here the corresponding number of ports otherwise if you have only one port you can leave this field at the default value of 1

5. serial number or unique code if you have more then one Prism connected to HomeAssistant you have to fill this value with a unique code (you can use the serial number) otherwise if you have only one Prism you can leave this field blank.

6. Enable virtual sensor this enable additional sensors derived from the original Prism sensors, like the counter of the total energy consumed from the power grid.

7. 

Solar automations

Solar automation is a work in progress. And we be described in Solar page

Entities

Entity ID	Type	Description	Unit
silla_prism_online	BinarySensor	Sensor to find if Prism is connected or not
silla_prism_current_state	Sensor	Current state of Prism	"idle", "waiting", "charging", "pause"
silla_prism_power_grid_voltage	Sensor	Measured voltage from grid	V
silla_prism_output_power	Sensor	Power provided to the charging port	W
silla_prism_output_current	Sensor	Current provided to the charging port	mA
silla_prism_output_car_current	Sensor	Current driven by the car	A
silla_prism_current_set_by_user	Sensor	Current limit set by user	A
silla_prism_session_time	Sensor	Duration of the current session	s
silla_prism_session_output_energy	Sensor	Energy provided to the charging port during the current session	Wh
silla_prism_total_output_energy	Sensor	Total energy	Wh
?/1/error	(TODO)	Error code
silla_prism_current_port_mode	Sensor	Current port mode	solar,normal,paused
silla_prism_input_grid_power	Sensor	Input power from grid	W
silla_prism_set_max_current	Number	Set the user current limit	A
silla_prism_set_current_limit	Number	Set the current limit	A
silla_prism_set_mode	Select	Set current port mode	solar,normal,paused
silla_prism_touch_sigle	BinarySensor	Goes on for 1 second after a single touch gesture	On,Off
silla_prism_touch_double	BinarySensor	Goes on for 1 second after a double touch gesture	On,Off
silla_prism_touch_long	BinarySensor	Goes on for 1 second after a long touch gesture	On,Off

Computed Entities

Computed entities are not directly measured from Prism but are derived from other measurements.

Entity ID	Type	Description	Unit
silla_prism_input_grid_energy	Sensor	Total energy taken from grid	Wh

Setting up the user interface

With the charger card integration

It's possible to configure the EV Charger Card using the configuration example provided in this repository

With automations and helpers

The following four examples show how to set up a simple interface via Home Assistant helpers (input booleans) and automations. You do not have to use all four!

These automations and input booleans can also be used with the EV Charger Card, though they are most useful without it.

Start/stop charge with a switch

For now, disable Autostart on the Prism (later I will show how to keep it enabled).

Create an "Input Boolean" called prism_charge (suggested icon: mdi:ev-plug-type2). The following automation starts and stop the charging process when prism_charge is toggled:

alias: Prism - authorize/deauthorize
triggers:
  - trigger: state
    entity_id:
      - input_boolean.prism_charge
    id: changed_switch
  - trigger: state
    entity_id:
      - sensor.silla_prism_current_state
    id: changed_state
actions:
  - if:
      - condition: state
        entity_id: sensor.silla_prism_current_state
        state: idle
    then:
      - action: input_boolean.turn_off
        target:
          entity_id: input_boolean.prism_charge
      - stop: No charging cable connected
  - condition: trigger
    id:
      - changed_switch
  - if:
      - condition: state
        entity_id: input_boolean.prism_charge
        state: 'on'
    then:
      - action: button.press
        target:
          entity_id: button.silla_prism_set_mode_traps_auth
    else:
      - action: button.press
        target:
          entity_id: button.silla_prism_set_mode_traps_noauth
mode: single

Start/stop charge with a single touch on the Prism

With the previous set up, Autostart is disabled, but starting/stopping the charge process with the Prism key fobs does not synchronize with the Input Boolean.

Instead of using the key fobs, you can configure another automation that toggles the Input Boolean with a single touch on the Prism's sensor:

alias: Prism - toggle charge after single touch event
description: ""
triggers:
  - trigger: state
    entity_id:
      - binary_sensor.silla_prism_touch_sigle
    to: on
actions:
  - action: input_boolean.toggle
    target:
      entity_id: input_boolean.prism_charge
mode: single

Same setup but with Autostart enabled

If you prefer to keep Autostart enabled or to use the key fobs, just ensure prism_charge changes to on and off when sensor.silla_prism_current_state becomes respectively charging or anything else:

alias: Prism - synchronize charging state
description: ""
triggers:
  - trigger: state
    entity_id:
      - sensor.silla_prism_current_state
    id: changed_prism
actions:
  - if:
      - condition: state
        entity_id: sensor.silla_prism_current_state
        state: charging
    then:
      - action: input_boolean.turn_on
        target:
          entity_id: input_boolean.prism_charge
  - else:
      - action: input_boolean.turn_off
        target:
          entity_id: input_boolean.prism_charge
mode: single

This can be used with any combination of the previous automations.

Switch normal/solar modes from Home Assistant

Create an "Input Boolean" called prism_solar_mode (suggested icon: mdi:weather-sunny). The following automation keeps it synchronized with the "solar" and "normal" modes of the Prism dashboard:

alias: Prism - synchronize solar/normal mode
description: ""
triggers:
  - trigger: state
    entity_id:
      - input_boolean.prism_solar_mode
    id: changed_helper
  - trigger: state
    entity_id:
      - sensor.silla_prism_current_port_mode
    id: changed_prism
actions:
  - if:
      - condition: trigger
        id:
          - changed_helper
    then:
      - if:
          - condition: state
            entity_id: input_boolean.prism_solar_mode
            state: on
        then:
          - action: select.select_option
            data:
              option: solar
            target:
              entity_id: select.silla_prism_set_mode
        else:
          - action: select.select_option
            data:
              option: normal
            target:
              entity_id: select.silla_prism_set_mode
    else:
      - if:
          - condition: state
            entity_id: sensor.silla_prism_current_port_mode
            state: solar
        then:
          - action: input_boolean.turn_on
            target:
              entity_id: input_boolean.prism_solar_mode
      - if:
          - condition: state
            entity_id: sensor.silla_prism_current_port_mode
            state: normal
        then:
          - action: input_boolean.turn_off
            target:
              entity_id: input_boolean.prism_solar_mode
mode: single