Altan's blog
Zola
2026-06-30T00:00:00+00:00
https://altan.ozlu.eu/atom.xml
My setup for Energy Management Automation
2026-06-30T00:00:00+00:00
2026-06-30T00:00:00+00:00
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https://altan.ozlu.eu/notes/haeo/
<p>Last year I had 11 solar panels installed on my roof, and this year I expanded it to a total of 28 solar panels.
When expanding the solar panels, I also bought a Sigenergy Sigenstor (3x9kWh), a 15kW TP inverter, and a gateway.
Since I like automating devices myself, I have disabled Sigenergy's AI system and let the <a rel="external" href="https://haeo.io/">HAEO</a> handle the battery.
HAEO takes all the inputs from the house and creates a forecast like below.
<img src="/notes/haeo-1.png" alt="HAEO forecast" /></p>
<p>Everyone would have a different setup, but here is the list of main components I have.</p>
<ul>
<li>Solar forecast via <a rel="external" href="https://github.com/rany2/ha-open-meteo-solar-forecast">Open-Meteo Solar Forecast</a> and a custom template that will take into account curtailment of ZonnePlan Powerplay.</li>
<li>Automation to execute the current desired status of HAEO</li>
<li>Template to fetch forecasted grid price information</li>
<li><a rel="external" href="https://github.com/TypQxQ/Sigenergy-Local-Modbus">HA Sigenergy Integration</a></li>
</ul>
<h3 id="setting-haeo">Setting HAEO</h3>
<p>Following the documentation in <a rel="external" href="https://haeo.io/latest/walkthroughs/sigenergy-system/">this HAEO page</a> would be enough to set up almost everything HAEO requires.
But Grid component requires buy and sell prices, so please check <a href="https://altan.ozlu.eu/notes/haeo/#price-information">Price Information</a> section. After making sure HAEO is ready and working add <code>HAEO Forecast</code> to a dashboard to visualize actions planned. If you are okay with what is being forecasted, add an automation in Home Assistant to apply HAEO's desired state.</p>
<p>Note: I don't have any special Policy, but I have a Charge cost of <code>0.01</code> in the battery component to prevent cycling the battery for little gains.</p>
<h3 id="automation">Automation</h3>
<p>This automation YAML is auto-generated from Rust code with unit tests, so it's quite verbose. My Sigen device has a <code>garage_</code> prefix in sensor names; if you don't have it, just remove the prefix by using the input and copy the code.</p>
<label>
Sigen ESS Prefix:
<input id="ess_prefix" type="text" value="garage_" />
</label>
<pre style=" max-height: calc(1.5em * 10)"><code data-lang="yaml" id="code"></code></pre>
<script>
const input = document.getElementById("ess_prefix");
const codeEl = document.getElementById("code");
const template = `alias: HAEO Sigen
triggers:
- trigger: state
entity_id:
- sensor.battery_active_power
- sensor.grid_active_power
- binary_sensor.garage_sigen_plant_importing_from_grid
- binary_sensor.garage_sigen_plant_exporting_to_grid
from: null
to: null
for:
hours: 0
minutes: 0
seconds: 6
actions:
- variables:
max_grid_export_watt: "{{ states(\"number.grid_export_limit") | float(0) * 1000 }}"
desired_grid_export_watt: >-
{{ -(states("sensor.grid_active_power") | float(0) * 1000) if
states("sensor.grid_active_power") | float(0) < 0 else 0 }}
real_load_watt: >-
{{ states("sensor.garage_sigen_plant_total_load_power") | float(0) *
1000 }}
desired_battery_discharge_watt: >-
{{ (states("sensor.battery_active_power") | float(0) * 1000) if
states("sensor.battery_active_power") | float(0) > 0 else 0 }}
max_charge_rate_watt: >-
{{ states("sensor.garage_sigen_plant_ess_rated_charging_power") |
float(0) * 1000 }}
desired_grid_import_watt: >-
{{ (states("sensor.grid_active_power") | float(0) * 1000) if
states("sensor.grid_active_power") | float(0) > 0 else 0 }}
max_discharge_rate_watt: >-
{{ states("sensor.garage_sigen_plant_ess_rated_discharging_power") |
float(0) * 1000 }}
real_pv_watt: "{{ states(\"sensor.garage_sigen_plant_pv_power\") | float(0) * 1000 }}"
real_grid_import_watt: >-
{{ (states("sensor.garage_sigen_plant_grid_active_power") | float(0) *
1000) if (states("sensor.garage_sigen_plant_grid_active_power") |
float(0)) > 0 else 0 }}
real_grid_export_watt: >-
{{ -(states("sensor.garage_sigen_plant_grid_active_power") | float(0) *
1000) if (states("sensor.garage_sigen_plant_grid_active_power") |
float(0)) < 0 else 0 }}
max_grid_import_watt: "{{ states(\"number.grid_import_limit\") | float(0) * 1000 }}"
desired_battery_charge_watt: >-
{{ -(states("sensor.battery_active_power") | float(0) * 1000 ) if
states("sensor.battery_active_power") | float(0) < 0 else 0 }}
- choose:
- conditions:
- condition: template
value_template: "{{ desired_battery_charge_watt > 0 }}"
sequence:
- choose:
- conditions:
- condition: template
value_template: "{{ desired_grid_export_watt > 0 }}"
sequence:
- action: select.select_option
data:
option: Maximum Self Consumption
target:
entity_id: select.garage_sigen_plant_remote_ems_control_mode
- action: number.set_value
data:
value: "{{ desired_battery_charge_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_ess_max_charging_limit
- action: number.set_value
data:
value: "{{ max_discharge_rate_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_ess_max_discharging_limit
- action: number.set_value
data:
value: "{{ max_grid_export_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_grid_export_limitation
- action: number.set_value
data:
value: "{{ max_grid_import_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_grid_import_limitation
default:
- choose:
- conditions:
- condition: template
value_template: "{{ desired_grid_import_watt > 0 }}"
sequence:
- action: select.select_option
data:
option: Command Charging (PV First)
target:
entity_id: select.garage_sigen_plant_remote_ems_control_mode
- action: number.set_value
data:
value: "{{ max_charge_rate_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_ess_max_charging_limit
- action: number.set_value
data:
value: "{{ max_discharge_rate_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_ess_max_discharging_limit
- action: number.set_value
data:
value: "{{ max_grid_export_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_grid_export_limitation
- action: number.set_value
data:
value: "{{ desired_grid_import_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_grid_import_limitation
default:
- action: select.select_option
data:
option: Maximum Self Consumption
target:
entity_id: select.garage_sigen_plant_remote_ems_control_mode
- action: number.set_value
data:
value: "{{ max_charge_rate_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_ess_max_charging_limit
- action: number.set_value
data:
value: "{{ max_discharge_rate_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_ess_max_discharging_limit
- action: number.set_value
data:
value: "{{ max_grid_export_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_grid_export_limitation
- action: number.set_value
data:
value: "{{ max_grid_import_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_grid_import_limitation
- conditions:
- condition: template
value_template: "{{ desired_battery_discharge_watt > 0 }}"
sequence:
- choose:
- conditions:
- condition: template
value_template: "{{ desired_grid_export_watt > 0 }}"
sequence:
- action: select.select_option
data:
option: Command Discharging (PV First)
target:
entity_id: select.garage_sigen_plant_remote_ems_control_mode
- action: number.set_value
data:
value: "{{ max_charge_rate_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_ess_max_charging_limit
- action: number.set_value
data:
value: "{{ max_discharge_rate_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_ess_max_discharging_limit
- action: number.set_value
data:
value: "{{ desired_grid_export_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_grid_export_limitation
- action: number.set_value
data:
value: "{{ max_grid_import_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_grid_import_limitation
default:
- action: select.select_option
data:
option: Maximum Self Consumption
target:
entity_id: select.garage_sigen_plant_remote_ems_control_mode
- action: number.set_value
data:
value: "{{ max_charge_rate_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_ess_max_charging_limit
- action: number.set_value
data:
value: "{{ max_discharge_rate_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_ess_max_discharging_limit
- action: number.set_value
data:
value: "{{ max_grid_export_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_grid_export_limitation
- action: number.set_value
data:
value: "{{ max_grid_import_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_grid_import_limitation
- conditions:
- condition: template
value_template: "{{ desired_grid_export_watt > 0 }}"
sequence:
- choose:
- conditions:
- condition: template
value_template: >-
{{ real_grid_import_watt > 50 or (real_load_watt /
real_pv_watt) > 0.8 }}
sequence:
- action: select.select_option
data:
option: Maximum Self Consumption
target:
entity_id: select.garage_sigen_plant_remote_ems_control_mode
- action: number.set_value
data:
value: "{{ max_charge_rate_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_ess_max_charging_limit
- action: number.set_value
data:
value: "{{ max_discharge_rate_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_ess_max_discharging_limit
- action: number.set_value
data:
value: "{{ max_grid_export_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_grid_export_limitation
- action: number.set_value
data:
value: "{{ max_grid_import_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_grid_import_limitation
default:
- action: select.select_option
data:
option: Command Discharging (PV First)
target:
entity_id: select.garage_sigen_plant_remote_ems_control_mode
- action: number.set_value
data:
value: "{{ max_charge_rate_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_ess_max_charging_limit
- action: number.set_value
data:
value: "0"
target:
entity_id: number.garage_sigen_plant_ess_max_discharging_limit
- action: number.set_value
data:
value: "{{ max_grid_export_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_grid_export_limitation
- action: number.set_value
data:
value: "{{ max_grid_import_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_grid_import_limitation
default:
- action: select.select_option
data:
option: Maximum Self Consumption
target:
entity_id: select.garage_sigen_plant_remote_ems_control_mode
- action: number.set_value
data:
value: "{{ max_charge_rate_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_ess_max_charging_limit
- action: number.set_value
data:
value: "{{ max_discharge_rate_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_ess_max_discharging_limit
- action: number.set_value
data:
value: "{{ max_grid_export_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_grid_export_limitation
- action: number.set_value
data:
value: "{{ max_grid_import_watt / 1000.0 }}"
target:
entity_id: number.garage_sigen_plant_grid_import_limitation
`;
function render() {
codeEl.textContent = template.replaceAll("garage_", input.value);
}
input.addEventListener("input", render);
render();
</script>
<h3 id="price-information">Price Information</h3>
<p>HAEO supports Nord Pool pricing <a rel="external" href="https://haeo.io/latest/user-guide/forecasts-and-sensors/#forecast-sensors">natively</a>, but I have chosen to go with <a rel="external" href="https://epexpredictor.batzill.com">epexpredictor.batzill.com</a>.
The predictor uses models to predict the market, but also uses real market data when it is available, so it's the best of both worlds.
I have created buy and sell price sensors to parse prediction data and apply Zonneplan's pricing.</p>
<pre class="giallo z-code"><code data-lang="yaml"><span class="giallo-l"><span class="z-entity z-name z-tag">s</span><span class="z-entity z-name z-tag">ensor</span><span>:</span></span>
<span class="giallo-l"><span> -</span><span class="z-entity z-name z-tag"> p</span><span class="z-entity z-name z-tag">latform</span><span>:</span><span class="z-string"> r</span><span class="z-string">est</span></span>
<span class="giallo-l"><span class="z-entity z-name z-tag"> r</span><span class="z-entity z-name z-tag">esource</span><span>:</span><span class="z-punctuation z-definition z-string"> "</span><span class="z-string">https://epexpredictor.batzill.com/prices_short?hours=120&surcharge=0&taxPercent=0&country=NL&evaluation=false&unit=EUR_PER_KWH&hourly=true&timezone=Europe%2FAmsterdam</span><span class="z-punctuation z-definition z-string">"</span></span>
<span class="giallo-l"><span class="z-entity z-name z-tag"> m</span><span class="z-entity z-name z-tag">ethod</span><span>:</span><span class="z-string"> G</span><span class="z-string">ET</span></span>
<span class="giallo-l"><span class="z-entity z-name z-tag"> u</span><span class="z-entity z-name z-tag">nique_id</span><span>:</span><span class="z-string"> e</span><span class="z-string">pex_predict</span></span>
<span class="giallo-l"><span class="z-entity z-name z-tag"> n</span><span class="z-entity z-name z-tag">ame</span><span>:</span><span class="z-punctuation z-definition z-string"> "</span><span class="z-string">EPEX Predict</span><span class="z-punctuation z-definition z-string">"</span></span>
<span class="giallo-l"><span class="z-entity z-name z-tag"> u</span><span class="z-entity z-name z-tag">nit_of_measurement</span><span>:</span><span class="z-string"> €</span><span class="z-string">/kWh</span></span>
<span class="giallo-l"><span class="z-entity z-name z-tag"> s</span><span class="z-entity z-name z-tag">can_interval</span><span>:</span><span class="z-constant"> 3600</span></span>
<span class="giallo-l"><span class="z-entity z-name z-tag"> v</span><span class="z-entity z-name z-tag">alue_template</span><span>:</span><span class="z-punctuation z-definition z-string"> "</span><span class="z-string">{{ value_json.t[0] }}</span><span class="z-punctuation z-definition z-string">"</span></span>
<span class="giallo-l"><span class="z-entity z-name z-tag"> j</span><span class="z-entity z-name z-tag">son_attributes</span><span>:</span></span>
<span class="giallo-l"><span> -</span><span class="z-string"> s</span></span>
<span class="giallo-l"><span> -</span><span class="z-string"> t</span></span>
<span class="giallo-l"></span>
<span class="giallo-l"><span class="z-entity z-name z-tag">t</span><span class="z-entity z-name z-tag">emplate</span><span>:</span></span>
<span class="giallo-l"><span> -</span><span class="z-entity z-name z-tag"> s</span><span class="z-entity z-name z-tag">ensor</span><span>:</span></span>
<span class="giallo-l"><span> -</span><span class="z-entity z-name z-tag"> n</span><span class="z-entity z-name z-tag">ame</span><span>:</span><span class="z-punctuation z-definition z-string"> "</span><span class="z-string">EPEX Sell Price</span><span class="z-punctuation z-definition z-string">"</span></span>
<span class="giallo-l"><span class="z-entity z-name z-tag"> u</span><span class="z-entity z-name z-tag">nique_id</span><span>:</span><span class="z-string"> e</span><span class="z-string">pex_sell_price</span></span>
<span class="giallo-l"><span class="z-entity z-name z-tag"> u</span><span class="z-entity z-name z-tag">nit_of_measurement</span><span>:</span><span class="z-punctuation z-definition z-string"> "</span><span class="z-string">EUR/kWh</span><span class="z-punctuation z-definition z-string">"</span></span>
<span class="giallo-l"><span class="z-entity z-name z-tag"> d</span><span class="z-entity z-name z-tag">evice_class</span><span>:</span><span class="z-string"> m</span><span class="z-string">onetary</span></span>
<span class="giallo-l"><span class="z-entity z-name z-tag"> s</span><span class="z-entity z-name z-tag">tate_class</span><span>:</span><span class="z-string"> t</span><span class="z-string">otal</span></span>
<span class="giallo-l"><span class="z-entity z-name z-tag"> s</span><span class="z-entity z-name z-tag">tate</span><span>:</span><span class="z-keyword"> ></span></span>
<span class="giallo-l"><span class="z-string"> {% set network = 0.02 %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set peak_mult = 1.1 %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set vat = 1.21 %}</span></span>
<span class="giallo-l"><span class="z-string"> {# Sunrise/sunset as minutes since midnight #}</span></span>
<span class="giallo-l"><span class="z-string"> {% set sr = as_timestamp(state_attr('sun.sun', 'next_rising')) | timestamp_custom('%H', true) | int * 60</span></span>
<span class="giallo-l"><span class="z-string"> + as_timestamp(state_attr('sun.sun', 'next_rising')) | timestamp_custom('%M', true) | int %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set ss = as_timestamp(state_attr('sun.sun', 'next_setting')) | timestamp_custom('%H', true) | int * 60</span></span>
<span class="giallo-l"><span class="z-string"> + as_timestamp(state_attr('sun.sun', 'next_setting')) | timestamp_custom('%M', true) | int %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set now_h = now().strftime('%Y-%m-%dT%H') %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set s = state_attr('sensor.epex_predict', 's') or [] %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set t = state_attr('sensor.epex_predict', 't') or [] %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set ns = namespace(v=none) %}</span></span>
<span class="giallo-l"><span class="z-string"> {% for i in range(s | count) %}</span></span>
<span class="giallo-l"><span class="z-string"> {% if (s[i] | timestamp_custom('%Y-%m-%dT%H', true)) == now_h %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set epex = t[i] %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set hour = (s[i] | timestamp_custom('%H', true)) | int %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set minute = (s[i] | timestamp_custom('%M', true)) | int %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set hour_start = hour * 60 + minute %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set hour_end = hour_start + 60 %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set overlap = [0, [hour_end, ss] | min - [hour_start, sr] | max] | max %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set day_frac = overlap / 60 %}</span></span>
<span class="giallo-l"><span class="z-string"> {% if (epex + network) > 0 %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set ns.v = (epex * (day_frac * peak_mult + (1 - day_frac)) * vat + network) | round(4) %}</span></span>
<span class="giallo-l"><span class="z-string"> {% else %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set ns.v = (epex * vat + network) | round(4) %}</span></span>
<span class="giallo-l"><span class="z-string"> {% endif %}</span></span>
<span class="giallo-l"><span class="z-string"> {% endif %}</span></span>
<span class="giallo-l"><span class="z-string"> {% endfor %}</span></span>
<span class="giallo-l"><span class="z-string"> {{ ns.v if ns.v is not none else 'unavailable' }}</span></span>
<span class="giallo-l"><span class="z-entity z-name z-tag"> a</span><span class="z-entity z-name z-tag">ttributes</span><span>:</span></span>
<span class="giallo-l"><span class="z-entity z-name z-tag"> s</span><span class="z-entity z-name z-tag">chedule</span><span>:</span><span class="z-keyword"> ></span></span>
<span class="giallo-l"><span class="z-string"> {% set network = 0.02 %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set peak_mult = 1.1 %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set vat = 1.21 %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set sr = as_timestamp(state_attr('sun.sun', 'next_rising')) | timestamp_custom('%H', true) | int * 60</span></span>
<span class="giallo-l"><span class="z-string"> + as_timestamp(state_attr('sun.sun', 'next_rising')) | timestamp_custom('%M', true) | int %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set ss = as_timestamp(state_attr('sun.sun', 'next_setting')) | timestamp_custom('%H', true) | int * 60</span></span>
<span class="giallo-l"><span class="z-string"> + as_timestamp(state_attr('sun.sun', 'next_setting')) | timestamp_custom('%M', true) | int %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set s = state_attr('sensor.epex_predict', 's') or [] %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set t = state_attr('sensor.epex_predict', 't') or [] %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set ns = namespace(d={}) %}</span></span>
<span class="giallo-l"><span class="z-string"> {% for i in range(s | count) %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set epex = t[i] %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set hour = (s[i] | timestamp_custom('%H', true)) | int %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set minute = (s[i] | timestamp_custom('%M', true)) | int %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set hour_start = hour * 60 + minute %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set hour_end = hour_start + 60 %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set overlap = [0, [hour_end, ss] | min - [hour_start, sr] | max] | max %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set day_frac = overlap / 60 %}</span></span>
<span class="giallo-l"><span class="z-string"> {% if (epex + network) > 0 %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set sell = (epex * (day_frac * peak_mult + (1 - day_frac)) * vat + network) | round(4) %}</span></span>
<span class="giallo-l"><span class="z-string"> {% else %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set sell = (epex * vat + network) | round(4) %}</span></span>
<span class="giallo-l"><span class="z-string"> {% endif %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set ns.d = dict(ns.d, **{s[i] | timestamp_local: sell}) %}</span></span>
<span class="giallo-l"><span class="z-string"> {% endfor %}</span></span>
<span class="giallo-l"><span class="z-string"> {{ ns.d }}</span></span>
<span class="giallo-l"><span class="z-entity z-name z-tag"> f</span><span class="z-entity z-name z-tag">orecasts</span><span>:</span><span class="z-keyword"> ></span></span>
<span class="giallo-l"><span class="z-string"> {% set network = 0.02 %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set peak_mult = 1.1 %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set vat = 1.21 %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set sr = as_timestamp(state_attr('sun.sun', 'next_rising')) | timestamp_custom('%H', true) | int * 60</span></span>
<span class="giallo-l"><span class="z-string"> + as_timestamp(state_attr('sun.sun', 'next_rising')) | timestamp_custom('%M', true) | int %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set ss = as_timestamp(state_attr('sun.sun', 'next_setting')) | timestamp_custom('%H', true) | int * 60</span></span>
<span class="giallo-l"><span class="z-string"> + as_timestamp(state_attr('sun.sun', 'next_setting')) | timestamp_custom('%M', true) | int %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set s = state_attr('sensor.epex_predict', 's') or [] %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set t = state_attr('sensor.epex_predict', 't') or [] %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set ns = namespace(forecasts=[]) %}</span></span>
<span class="giallo-l"><span class="z-string"> {% for i in range([s|count, t|count]|min) %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set start_ts = s[i] %}</span></span>
<span class="giallo-l"><span class="z-string"> {% if start_ts is number %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set start_iso = (start_ts | int) | timestamp_local('%Y-%m-%dT%H:%M:%S%z') %}</span></span>
<span class="giallo-l"><span class="z-string"> {% else %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set start_iso = start_ts %}</span></span>
<span class="giallo-l"><span class="z-string"> {% endif %}</span></span>
<span class="giallo-l"></span>
<span class="giallo-l"><span class="z-string"> {% if i + 1 < (s|count) %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set next_ts = s[i+1] %}</span></span>
<span class="giallo-l"><span class="z-string"> {% if next_ts is number %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set end_iso = (next_ts | int) | timestamp_local('%Y-%m-%dT%H:%M:%S%z') %}</span></span>
<span class="giallo-l"><span class="z-string"> {% else %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set end_iso = next_ts %}</span></span>
<span class="giallo-l"><span class="z-string"> {% endif %}</span></span>
<span class="giallo-l"><span class="z-string"> {% else %}</span></span>
<span class="giallo-l"><span class="z-string"> {% if start_ts is number %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set end_iso = ((start_ts | int) + 3600) | timestamp_local('%Y-%m-%dT%H:%M:%S%z') %}</span></span>
<span class="giallo-l"><span class="z-string"> {% else %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set end_iso = start_iso %}</span></span>
<span class="giallo-l"><span class="z-string"> {% endif %}</span></span>
<span class="giallo-l"><span class="z-string"> {% endif %}</span></span>
<span class="giallo-l"></span>
<span class="giallo-l"><span class="z-string"> {% set hour = (start_ts | timestamp_custom('%H', true)) | int %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set minute = (start_ts | timestamp_custom('%M', true)) | int %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set hour_start = hour * 60 + minute %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set hour_end = hour_start + 60 %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set overlap = [0, [hour_end, ss] | min - [hour_start, sr] | max] | max %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set day_frac = overlap / 60 %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set epex = t[i] %}</span></span>
<span class="giallo-l"><span class="z-string"> {% if (epex + network) > 0 %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set per_kwh = (epex * (day_frac * peak_mult + (1 - day_frac)) * vat + network) | round(4) %}</span></span>
<span class="giallo-l"><span class="z-string"> {% else %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set per_kwh = (epex * vat + network) | round(4) %}</span></span>
<span class="giallo-l"><span class="z-string"> {% endif %}</span></span>
<span class="giallo-l"></span>
<span class="giallo-l"><span class="z-string"> {% set ns.forecasts = ns.forecasts + [{</span></span>
<span class="giallo-l"><span class="z-string"> "start_time": start_iso,</span></span>
<span class="giallo-l"><span class="z-string"> "end_time": end_iso,</span></span>
<span class="giallo-l"><span class="z-string"> "per_kwh": per_kwh</span></span>
<span class="giallo-l"><span class="z-string"> }] %}</span></span>
<span class="giallo-l"><span class="z-string"> {% endfor %}</span></span>
<span class="giallo-l"><span class="z-string"> {{ ns.forecasts }}</span></span>
<span class="giallo-l"><span> -</span><span class="z-entity z-name z-tag"> n</span><span class="z-entity z-name z-tag">ame</span><span>:</span><span class="z-punctuation z-definition z-string"> "</span><span class="z-string">EPEX Buy Price</span><span class="z-punctuation z-definition z-string">"</span></span>
<span class="giallo-l"><span class="z-entity z-name z-tag"> u</span><span class="z-entity z-name z-tag">nique_id</span><span>:</span><span class="z-string"> e</span><span class="z-string">pex_buy_price</span></span>
<span class="giallo-l"><span class="z-entity z-name z-tag"> u</span><span class="z-entity z-name z-tag">nit_of_measurement</span><span>:</span><span class="z-punctuation z-definition z-string"> "</span><span class="z-string">EUR/kWh</span><span class="z-punctuation z-definition z-string">"</span></span>
<span class="giallo-l"><span class="z-entity z-name z-tag"> d</span><span class="z-entity z-name z-tag">evice_class</span><span>:</span><span class="z-string"> m</span><span class="z-string">onetary</span></span>
<span class="giallo-l"><span class="z-entity z-name z-tag"> s</span><span class="z-entity z-name z-tag">tate_class</span><span>:</span><span class="z-string"> t</span><span class="z-string">otal</span></span>
<span class="giallo-l"><span class="z-punctuation z-definition z-comment"> #</span><span class="z-comment"> State = current hour's buy price</span></span>
<span class="giallo-l"><span class="z-entity z-name z-tag"> s</span><span class="z-entity z-name z-tag">tate</span><span>:</span><span class="z-keyword"> ></span></span>
<span class="giallo-l"><span class="z-string"> {% set surcharge = 0.09161 %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set network = 0.02 %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set vat = 1.21 %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set now_h = now().strftime('%Y-%m-%dT%H') %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set s = state_attr('sensor.epex_predict', 's') or [] %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set t = state_attr('sensor.epex_predict', 't') or [] %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set ns = namespace(v=none) %}</span></span>
<span class="giallo-l"><span class="z-string"> {% for i in range(s | count) %}</span></span>
<span class="giallo-l"><span class="z-string"> {% if (s[i] | timestamp_custom('%Y-%m-%dT%H', true)) == now_h %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set ns.v = ((t[i] + surcharge) * vat + network) | round(4) %}</span></span>
<span class="giallo-l"><span class="z-string"> {% endif %}</span></span>
<span class="giallo-l"><span class="z-string"> {% endfor %}</span></span>
<span class="giallo-l"><span class="z-string"> {{ ns.v if ns.v is not none else 'unavailable' }}</span></span>
<span class="giallo-l"><span class="z-entity z-name z-tag"> a</span><span class="z-entity z-name z-tag">ttributes</span><span>:</span></span>
<span class="giallo-l"><span class="z-punctuation z-definition z-comment"> #</span><span class="z-comment"> Full schedule: { "2026-04-11T14:00:00+02:00": 0.2341, ... }</span></span>
<span class="giallo-l"><span class="z-entity z-name z-tag"> s</span><span class="z-entity z-name z-tag">chedule</span><span>:</span><span class="z-keyword"> ></span></span>
<span class="giallo-l"><span class="z-string"> {% set surcharge = 0.09161 %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set network = 0.02 %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set vat = 1.21 %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set s = state_attr('sensor.epex_predict', 's') or [] %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set t = state_attr('sensor.epex_predict', 't') or [] %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set ns = namespace(d={}) %}</span></span>
<span class="giallo-l"><span class="z-string"> {% for i in range(s | count) %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set buy = ((t[i] + surcharge) * vat + network) | round(4) %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set ns.d = dict(ns.d, **{s[i] | timestamp_local: buy}) %}</span></span>
<span class="giallo-l"><span class="z-string"> {% endfor %}</span></span>
<span class="giallo-l"><span class="z-string"> {{ ns.d }}</span></span>
<span class="giallo-l"><span class="z-entity z-name z-tag"> f</span><span class="z-entity z-name z-tag">orecasts</span><span>:</span><span class="z-keyword"> ></span></span>
<span class="giallo-l"><span class="z-string"> {% set surcharge = 0.09161 %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set network = 0.02 %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set vat = 1.21 %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set s = state_attr('sensor.epex_predict', 's') or [] %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set t = state_attr('sensor.epex_predict', 't') or [] %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set ns = namespace(forecasts=[]) %}</span></span>
<span class="giallo-l"><span class="z-string"> {% for i in range([s|count, t|count]|min) %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set start_ts = s[i] %}</span></span>
<span class="giallo-l"><span class="z-string"> {# convert numeric UNIX timestamp to ISO 8601 with local offset; if already a string, treat as-is #}</span></span>
<span class="giallo-l"><span class="z-string"> {% if start_ts is number %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set start_iso = (start_ts | int) | timestamp_local('%Y-%m-%dT%H:%M:%S%z') %}</span></span>
<span class="giallo-l"><span class="z-string"> {% else %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set start_iso = start_ts %}</span></span>
<span class="giallo-l"><span class="z-string"> {% endif %}</span></span>
<span class="giallo-l"><span class="z-string"> {# determine end_time: use next start timestamp if available, otherwise add one hour #}</span></span>
<span class="giallo-l"><span class="z-string"> {% if i + 1 < (s|count) %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set next_ts = s[i+1] %}</span></span>
<span class="giallo-l"><span class="z-string"> {% if next_ts is number %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set end_iso = (next_ts | int) | timestamp_local('%Y-%m-%dT%H:%M:%S%z') %}</span></span>
<span class="giallo-l"><span class="z-string"> {% else %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set end_iso = next_ts %}</span></span>
<span class="giallo-l"><span class="z-string"> {% endif %}</span></span>
<span class="giallo-l"><span class="z-string"> {% else %}</span></span>
<span class="giallo-l"><span class="z-string"> {% if start_ts is number %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set end_iso = ((start_ts | int) + 3600) | timestamp_local('%Y-%m-%dT%H:%M:%S%z') %}</span></span>
<span class="giallo-l"><span class="z-string"> {% else %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set end_iso = start_iso %}</span></span>
<span class="giallo-l"><span class="z-string"> {% endif %}</span></span>
<span class="giallo-l"><span class="z-string"> {% endif %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set per_kwh = ((t[i] + surcharge) * vat + network) | round(4) %}</span></span>
<span class="giallo-l"><span class="z-string"> {% set ns.forecasts = ns.forecasts + [{</span></span>
<span class="giallo-l"><span class="z-string"> "start_time": start_iso,</span></span>
<span class="giallo-l"><span class="z-string"> "end_time": end_iso,</span></span>
<span class="giallo-l"><span class="z-string"> "per_kwh": per_kwh</span></span>
<span class="giallo-l"><span class="z-string"> }] %}</span></span>
<span class="giallo-l"><span class="z-string"> {% endfor %}</span></span>
<span class="giallo-l"><span class="z-string"> {{ ns.forecasts }}</span></span>
<span class="giallo-l"></span></code></pre>
Using RTC to run services with power savings!
2025-02-26T00:00:00+00:00
2025-02-26T00:00:00+00:00
Unknown
https://altan.ozlu.eu/notes/rtc-wake/
<p>For some time, I've been using my desktop to run some applications, some of which are written by me and it's ideal to run it every 30 minutes or so.
Since it's an AMD machine its idle power usage is not ideal.
It's around <code>90W</code> without monitor, I couldn't get it lower with power saving settings in BIOS so I just gave up.
A few days ago I wanted to know if it's possible to wake the machine programmatically and came across rtcwake.</p>
<p>So I just wrote a small Rust script around it,</p>
<p>When you call <code>suspend_until</code> it will just sleep, set RTC and continue until machine is suspended by external factors (like me!)
if machine wakes up from suspend because of RTC, next time <code>suspend_until</code> called it will also suspend the machine after setting RTC.
This cycle can be broken by external factor wake the machine before RTC.</p>
<p>This way machine will only spend <code>1W</code> when it's suspended. It is also possible to set other modes for RTC, check <a rel="external" href="https://www.man7.org/linux/man-pages/man8/rtcwake.8.html">man rtcwake</a>.</p>
<p>How to use rtcwake (run this as root):</p>
<pre class="giallo z-code"><code data-lang="rust"><span class="giallo-l"><span class="z-storage z-type">let</span><span class="z-storage"> mut</span><span class="z-variable z-other"> rtc</span><span class="z-keyword"> =</span><span class="z-entity z-name"> rtcwake</span><span class="z-keyword">::</span><span class="z-entity z-name">RTCWake</span><span class="z-keyword">::</span><span class="z-entity z-name">new</span><span>(</span><span class="z-entity z-name">Duration</span><span class="z-keyword">::</span><span class="z-entity z-name">from_minutes</span><span>(</span><span class="z-constant">30</span><span>)</span><span>)</span><span>;</span></span>
<span class="giallo-l"><span class="z-keyword">loop</span><span> {</span></span>
<span class="giallo-l"><span class="z-entity z-name"> println!</span><span>(</span><span class="z-punctuation z-definition z-string">"</span><span class="z-string">hey!</span><span class="z-punctuation z-definition z-string">"</span><span>)</span><span>;</span></span>
<span class="giallo-l"><span class="z-variable z-other"> rtc</span><span class="z-keyword">.</span><span class="z-entity z-name">suspend_until</span><span>(</span><span>)</span><span class="z-keyword">?</span><span>;</span></span>
<span class="giallo-l"><span>}</span></span></code></pre>
<p>rtcwake module:</p>
<pre class="giallo z-code"><code data-lang="rust"><span class="giallo-l"><span class="z-keyword">use</span><span class="z-entity z-name"> std</span><span class="z-keyword">::</span><span>{</span></span>
<span class="giallo-l"><span class="z-entity z-name"> error</span><span class="z-keyword">::</span><span class="z-entity z-name">Error</span><span>,</span></span>
<span class="giallo-l"><span class="z-entity z-name"> process</span><span class="z-keyword">::</span><span class="z-entity z-name">Command</span><span>,</span></span>
<span class="giallo-l"><span class="z-entity z-name"> time</span><span class="z-keyword">::</span><span>{</span><span class="z-entity z-name">Duration</span><span>,</span><span class="z-entity z-name"> SystemTime</span><span>}</span><span>,</span></span>
<span class="giallo-l"><span>}</span><span>;</span></span>
<span class="giallo-l"></span>
<span class="giallo-l"><span class="z-storage z-type">const</span><span class="z-constant"> TICK_SECONDS</span><span class="z-keyword">:</span><span class="z-entity z-name"> Duration</span><span class="z-keyword"> =</span><span class="z-entity z-name"> Duration</span><span class="z-keyword">::</span><span class="z-entity z-name">from_secs</span><span>(</span><span class="z-constant">5</span><span>)</span><span>;</span></span>
<span class="giallo-l"></span>
<span class="giallo-l"><span class="z-storage z-type">enum</span><span class="z-entity z-name"> Status</span><span> {</span></span>
<span class="giallo-l"><span class="z-entity z-name"> Awake</span><span>,</span></span>
<span class="giallo-l"><span class="z-entity z-name"> Suspend</span><span>,</span></span>
<span class="giallo-l"><span>}</span></span>
<span class="giallo-l"></span>
<span class="giallo-l"><span class="z-keyword">pub</span><span class="z-storage z-type"> struct</span><span class="z-entity z-name"> RTCWake</span><span> {</span></span>
<span class="giallo-l"><span class="z-variable z-other"> status</span><span class="z-keyword">:</span><span class="z-entity z-name"> Status</span><span>,</span></span>
<span class="giallo-l"><span class="z-variable z-other"> duration</span><span class="z-keyword">:</span><span class="z-entity z-name"> Duration</span><span>,</span></span>
<span class="giallo-l"><span>}</span></span>
<span class="giallo-l"></span>
<span class="giallo-l"><span class="z-keyword">impl</span><span class="z-entity z-name"> RTCWake</span><span> {</span></span>
<span class="giallo-l"><span class="z-keyword"> pub</span><span class="z-keyword"> fn</span><span class="z-entity z-name"> new</span><span>(</span><span class="z-variable z-other">duration</span><span class="z-keyword">:</span><span class="z-entity z-name"> Duration</span><span>)</span><span class="z-keyword"> -></span><span class="z-variable z-language"> Self</span><span> {</span></span>
<span class="giallo-l"><span class="z-entity z-name"> RTCWake</span><span> {</span></span>
<span class="giallo-l"><span class="z-variable z-other"> status</span><span class="z-keyword">:</span><span class="z-entity z-name"> Status</span><span class="z-keyword">::</span><span class="z-entity z-name">Awake</span><span>,</span></span>
<span class="giallo-l"><span class="z-variable z-other"> duration</span><span>,</span></span>
<span class="giallo-l"><span> }</span></span>
<span class="giallo-l"><span> }</span></span>
<span class="giallo-l"><span class="z-keyword"> pub</span><span class="z-keyword"> fn</span><span class="z-entity z-name"> suspend_until</span><span>(</span><span class="z-keyword">&</span><span class="z-storage">mut</span><span class="z-variable z-language"> self</span><span>)</span><span class="z-keyword"> -></span><span class="z-entity z-name"> Result</span><span><</span><span>(</span><span>)</span><span>,</span><span class="z-entity z-name"> Box</span><span><</span><span class="z-keyword">dyn</span><span class="z-entity z-name"> Error</span><span>></span><span>></span><span> {</span></span>
<span class="giallo-l"><span class="z-storage z-type"> let</span><span class="z-variable z-other"> desired_wake_time</span><span class="z-keyword"> =</span><span class="z-entity z-name"> SystemTime</span><span class="z-keyword">::</span><span class="z-entity z-name">now</span><span>(</span><span>)</span><span class="z-keyword"> +</span><span class="z-variable z-language"> self</span><span class="z-keyword">.</span><span>duration</span><span>;</span></span>
<span class="giallo-l"><span class="z-keyword"> match</span><span class="z-variable z-language"> self</span><span class="z-keyword">.</span><span>status </span><span>{</span></span>
<span class="giallo-l"><span class="z-entity z-name"> Status</span><span class="z-keyword">::</span><span class="z-entity z-name">Awake</span><span class="z-keyword"> =></span><span class="z-variable z-language"> self</span><span class="z-keyword">.</span><span class="z-entity z-name">sleep</span><span>(</span><span class="z-variable z-language">self</span><span class="z-keyword">.</span><span>duration</span><span>)</span><span class="z-keyword">?</span><span>,</span></span>
<span class="giallo-l"><span class="z-entity z-name"> Status</span><span class="z-keyword">::</span><span class="z-entity z-name">Suspend</span><span class="z-keyword"> =></span><span> {</span></span>
<span class="giallo-l"><span class="z-entity z-name"> call_rtcwake</span><span>(</span><span class="z-punctuation z-definition z-string">"</span><span class="z-string">mem</span><span class="z-punctuation z-definition z-string">"</span><span>,</span><span class="z-variable z-language"> self</span><span class="z-keyword">.</span><span>duration</span><span>)</span><span class="z-keyword">?</span><span>;</span></span>
<span class="giallo-l"><span class="z-storage z-type"> let</span><span class="z-variable z-other"> now</span><span class="z-keyword"> =</span><span class="z-entity z-name"> SystemTime</span><span class="z-keyword">::</span><span class="z-entity z-name">now</span><span>(</span><span>)</span><span>;</span></span>
<span class="giallo-l"><span class="z-keyword"> if</span><span class="z-variable z-other"> now</span><span class="z-keyword"> <</span><span class="z-variable z-other"> desired_wake_time</span><span> {</span></span>
<span class="giallo-l"><span class="z-punctuation z-definition z-comment"> //</span><span class="z-comment"> System woke up before RTC</span></span>
<span class="giallo-l"><span class="z-entity z-name"> println!</span><span>(</span><span class="z-punctuation z-definition z-string">"</span><span class="z-string">{</span><span class="z-string">now:?</span><span class="z-string">}</span><span class="z-string"> < </span><span class="z-string">{</span><span class="z-string">desired_wake_time:?</span><span class="z-string">}</span><span class="z-punctuation z-definition z-string">"</span><span>)</span><span>;</span></span>
<span class="giallo-l"><span class="z-storage z-type"> let</span><span class="z-variable z-other"> sleep_duration</span><span class="z-keyword"> =</span><span class="z-variable z-other"> desired_wake_time</span><span class="z-keyword">.</span><span class="z-entity z-name">duration_since</span><span>(</span><span class="z-variable z-other">now</span><span>)</span><span class="z-keyword">?</span><span>;</span></span>
<span class="giallo-l"><span class="z-variable z-language"> self</span><span class="z-keyword">.</span><span>status </span><span class="z-keyword">=</span><span class="z-entity z-name"> Status</span><span class="z-keyword">::</span><span class="z-entity z-name">Awake</span><span>;</span></span>
<span class="giallo-l"><span class="z-variable z-language"> self</span><span class="z-keyword">.</span><span class="z-entity z-name">sleep</span><span>(</span><span class="z-variable z-other">sleep_duration</span><span>)</span><span class="z-keyword">?</span><span>;</span></span>
<span class="giallo-l"><span> }</span></span>
<span class="giallo-l"><span> }</span></span>
<span class="giallo-l"><span> }</span></span>
<span class="giallo-l"><span class="z-entity z-name"> Ok</span><span>(</span><span>(</span><span>)</span><span>)</span></span>
<span class="giallo-l"><span> }</span></span>
<span class="giallo-l"></span>
<span class="giallo-l"><span class="z-keyword"> fn</span><span class="z-entity z-name"> sleep</span><span>(</span><span class="z-keyword">&</span><span class="z-storage">mut</span><span class="z-variable z-language"> self</span><span>,</span><span class="z-variable z-other"> duration</span><span class="z-keyword">:</span><span class="z-entity z-name"> Duration</span><span>)</span><span class="z-keyword"> -></span><span class="z-entity z-name"> Result</span><span><</span><span>(</span><span>)</span><span>,</span><span class="z-entity z-name"> Box</span><span><</span><span class="z-keyword">dyn</span><span class="z-entity z-name"> Error</span><span>></span><span>></span><span> {</span></span>
<span class="giallo-l"><span class="z-storage z-type"> let</span><span class="z-variable z-other"> desired_wake_time</span><span class="z-keyword"> =</span><span class="z-entity z-name"> SystemTime</span><span class="z-keyword">::</span><span class="z-entity z-name">now</span><span>(</span><span>)</span><span class="z-keyword"> +</span><span class="z-variable z-other"> duration</span><span>;</span></span>
<span class="giallo-l"><span class="z-entity z-name"> call_rtcwake</span><span>(</span><span class="z-punctuation z-definition z-string">"</span><span class="z-string">no</span><span class="z-punctuation z-definition z-string">"</span><span>,</span><span class="z-variable z-other"> duration</span><span>)</span><span class="z-keyword">?</span><span>;</span><span class="z-punctuation z-definition z-comment"> //</span><span class="z-comment"> Now it won't suspend but just in case it will set up RTC.</span></span>
<span class="giallo-l"><span class="z-keyword"> loop</span><span> {</span></span>
<span class="giallo-l"><span class="z-storage z-type"> let</span><span class="z-variable z-other"> time_before_sleep</span><span class="z-keyword"> =</span><span class="z-entity z-name"> SystemTime</span><span class="z-keyword">::</span><span class="z-entity z-name">now</span><span>(</span><span>)</span><span>;</span></span>
<span class="giallo-l"><span class="z-entity z-name"> std</span><span class="z-keyword">::</span><span class="z-entity z-name">thread</span><span class="z-keyword">::</span><span class="z-entity z-name">sleep</span><span>(</span><span class="z-constant">TICK_SECONDS</span><span>)</span><span>;</span></span>
<span class="giallo-l"><span class="z-storage z-type"> let</span><span class="z-variable z-other"> passed_time</span><span class="z-keyword"> =</span><span class="z-entity z-name"> SystemTime</span><span class="z-keyword">::</span><span class="z-entity z-name">now</span><span>(</span><span>)</span><span class="z-keyword">.</span><span class="z-entity z-name">duration_since</span><span>(</span><span class="z-variable z-other">time_before_sleep</span><span>)</span><span class="z-keyword">?</span><span>;</span></span>
<span class="giallo-l"><span class="z-keyword"> if</span><span class="z-variable z-other"> passed_time</span><span class="z-keyword"> ></span><span class="z-constant"> TICK_SECONDS</span><span class="z-keyword"> *</span><span class="z-constant"> 5</span><span> {</span></span>
<span class="giallo-l"><span class="z-punctuation z-definition z-comment"> //</span><span class="z-comment"> Thread slept more than it should, assuming RTC wake</span></span>
<span class="giallo-l"><span class="z-variable z-language"> self</span><span class="z-keyword">.</span><span>status </span><span class="z-keyword">=</span><span class="z-entity z-name"> Status</span><span class="z-keyword">::</span><span class="z-entity z-name">Suspend</span><span>;</span></span>
<span class="giallo-l"><span class="z-entity z-name"> println!</span><span>(</span><span class="z-punctuation z-definition z-string">"</span><span class="z-string">Woke with RTC</span><span class="z-punctuation z-definition z-string">"</span><span>)</span><span>;</span></span>
<span class="giallo-l"><span> }</span></span>
<span class="giallo-l"><span class="z-keyword"> if</span><span class="z-entity z-name"> SystemTime</span><span class="z-keyword">::</span><span class="z-entity z-name">now</span><span>(</span><span>)</span><span class="z-keyword"> >=</span><span class="z-variable z-other"> desired_wake_time</span><span> {</span></span>
<span class="giallo-l"><span class="z-keyword"> break</span><span>;</span></span>
<span class="giallo-l"><span> }</span></span>
<span class="giallo-l"><span> }</span></span>
<span class="giallo-l"><span class="z-entity z-name"> Ok</span><span>(</span><span>(</span><span>)</span><span>)</span></span>
<span class="giallo-l"><span> }</span></span>
<span class="giallo-l"><span>}</span></span>
<span class="giallo-l"></span>
<span class="giallo-l"><span class="z-keyword">fn</span><span class="z-entity z-name"> call_rtcwake</span><span>(</span><span class="z-variable z-other">mode</span><span class="z-keyword">:</span><span class="z-keyword"> &</span><span class="z-entity z-name">str</span><span>,</span><span class="z-variable z-other"> duration</span><span class="z-keyword">:</span><span class="z-entity z-name"> Duration</span><span>)</span><span class="z-keyword"> -></span><span class="z-entity z-name"> Result</span><span><</span><span>(</span><span>)</span><span>,</span><span class="z-entity z-name"> Box</span><span><</span><span class="z-keyword">dyn</span><span class="z-entity z-name"> Error</span><span>></span><span>></span><span> {</span></span>
<span class="giallo-l"><span class="z-entity z-name"> Command</span><span class="z-keyword">::</span><span class="z-entity z-name">new</span><span>(</span><span class="z-punctuation z-definition z-string">"</span><span class="z-string">/usr/bin/rtcwake</span><span class="z-punctuation z-definition z-string">"</span><span>)</span></span>
<span class="giallo-l"><span class="z-keyword"> .</span><span class="z-entity z-name">arg</span><span>(</span><span class="z-punctuation z-definition z-string">"</span><span class="z-string">-m</span><span class="z-punctuation z-definition z-string">"</span><span>)</span></span>
<span class="giallo-l"><span class="z-keyword"> .</span><span class="z-entity z-name">arg</span><span>(</span><span class="z-variable z-other">mode</span><span>)</span></span>
<span class="giallo-l"><span class="z-keyword"> .</span><span class="z-entity z-name">arg</span><span>(</span><span class="z-punctuation z-definition z-string">"</span><span class="z-string">-s</span><span class="z-punctuation z-definition z-string">"</span><span>)</span></span>
<span class="giallo-l"><span class="z-keyword"> .</span><span class="z-entity z-name">arg</span><span>(</span><span class="z-variable z-other">duration</span><span class="z-keyword">.</span><span class="z-entity z-name">as_secs</span><span>(</span><span>)</span><span class="z-keyword">.</span><span class="z-entity z-name">to_string</span><span>(</span><span>)</span><span>)</span></span>
<span class="giallo-l"><span class="z-keyword"> .</span><span class="z-entity z-name">output</span><span>(</span><span>)</span><span class="z-keyword">?</span><span>;</span></span>
<span class="giallo-l"><span class="z-entity z-name"> Ok</span><span>(</span><span>(</span><span>)</span><span>)</span></span>
<span class="giallo-l"><span>}</span></span></code></pre>
Starting writing a blog
2024-10-03T00:00:00+00:00
2024-10-03T00:00:00+00:00
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https://altan.ozlu.eu/notes/test/
<p>Just a place holder for setting up the website, will be removed in the future...</p>