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| #
# SlimmeLezer+ configuration with SmartEVSE REST support.
# Extended from github://zuidwijk/slimmelezer-wt32-eth01/wt32.yaml@main
#
# Added:
# - SmartEVSE Integration switch (available in HA)
# - SmartEVSE API connectivity status sensor (available in HA)
# - Electricity tariff sensor (available in HA, useful for automations)
# - Send data to SmartEVSE using http post REST interface
# - HomeWizard HWE-P1 API emulation (for Indevolt and other batteries)
# - mDNS announcement as HomeWizard P1 meter
#
# Please update 'smartevse_host' below to match your SmartEVSE
#
substitutions:
device_name: slimmelezer
smartevse_host: 192.168.x.x # <== YOUR SMARTEVSE IP ADDRESS HERE
esphome:
name: ${device_name}
name_add_mac_suffix: false
comment: SlimmeLezer+ / SmartEVSE / HomeWizard API
project:
name: zuidwijk.slimmelezer
version: "1.2"
on_boot:
# ── Bestaande boot logica (decryptie sleutel) ────────────────────────────
- priority: 600.0
then:
- if:
condition:
lambda: return id(has_key);
then:
- lambda: |-
std::string key(id(stored_decryption_key), 32);
id(dsmr_instance).set_decryption_key(key.c_str());
else:
- logger.log:
level: info
format: "Not using decryption key. If you need to set a key use Home Assistant service 'ESPHome: ${device_name}_set_dsmr_key'"
# ── HomeWizard API registreren (na webserver start) ──────────────────────
- priority: -100.0
then:
- lambda: |-
auto *server = esphome::web_server_base::global_web_server_base->get_server();
// GET /api/v1/telegram → ruwe DSMR telegram tekst
server->on("/api/v1/telegram", HTTP_GET, [](AsyncWebServerRequest *req) {
req->send(200, "text/plain", id(last_telegram).c_str());
});
// GET /api/v1/data eerst registreren (meest specifieke route)
server->on("/api/v1/data", HTTP_GET, [](AsyncWebServerRequest *req) {
// wifi dBm (-100..0) → percentage (0..100)
int wifi_pct = (int)clamp((id(hw_wifi_signal).state + 100.0f) * 2.0f, 0.0f, 100.0f);
int smr_ver = atoi(id(hw_p1_version).state.c_str());
// kW → W
float p_net = (id(hw_power_delivered).state - id(hw_power_returned).state) * 1000.0f;
float l1_w = (id(hw_power_del_l1).state - id(power_returned_l1).state) * 1000.0f;
float l2_w = (id(hw_power_del_l2).state - id(power_returned_l2).state) * 1000.0f;
float l3_w = (id(hw_power_del_l3).state - id(power_returned_l3).state) * 1000.0f;
// Gesigneerde stroom per fase berekend uit P/V (geeft 3 decimalen precisie)
// l1_w/l2_w/l3_w zijn al gesigneerd (negatief = teruglevering)
float i1 = (id(hw_voltage_l1).state > 0) ? l1_w / id(hw_voltage_l1).state : 0.0f;
float i2 = (id(hw_voltage_l2).state > 0) ? l2_w / id(hw_voltage_l2).state : 0.0f;
float i3 = (id(hw_voltage_l3).state > 0) ? l3_w / id(hw_voltage_l3).state : 0.0f;
// Totale stroom (waarden per fase optellen)
float i_total = i1 + i2 + i3;
// Totaal import/export (t1 + t2)
float total_import = id(hw_energy_t1).state + id(hw_energy_t2).state;
float total_export = id(hw_return_t1).state + id(hw_return_t2).state;
// gas_timestamp direct uit telegram parsen (0-1:24.2.1(YYMMDDhhmmssX)(...))
long long gas_ts = 0LL;
size_t gpos = id(last_telegram).find("0-1:24.2.1(");
if (gpos != std::string::npos) {
gpos += 11; // sla "0-1:24.2.1(" over
size_t gend = id(last_telegram).find(')', gpos);
if (gend != std::string::npos) {
std::string gts = id(last_telegram).substr(gpos, gend - gpos);
if (!gts.empty() && (gts.back() == 'S' || gts.back() == 'W'))
gts.pop_back();
gas_ts = atoll(gts.c_str());
}
}
// Cursor-gebaseerde JSON opbouw: conditionele velden worden
// weggelaten als de waarde niet beschikbaar is (isnan)
static char buf[1280];
int p = 0;
#define A(...) p += snprintf(buf + p, sizeof(buf) - p, __VA_ARGS__)
#define AF(key, val) if (!isnan(val)) A("\"" key "\":%.0f,", val)
A("{");
A("\"unique_id\":\"%s\",", id(hw_equipment_id).state.c_str());
A("\"wifi_ssid\":\"%s\",", WiFi.SSID().c_str());
A("\"wifi_strength\":%d,", wifi_pct);
A("\"smr_version\":%d,", smr_ver);
A("\"meter_model\":\"%s\",", id(hw_identification).state.c_str());
A("\"active_tariff\":%d,", atoi(id(hw_tariff).state.c_str()));
A("\"total_power_import_kwh\":%.3f,", total_import);
A("\"total_power_import_t1_kwh\":%.3f,", id(hw_energy_t1).state);
A("\"total_power_import_t2_kwh\":%.3f,", id(hw_energy_t2).state);
A("\"total_power_export_kwh\":%.3f,", total_export);
A("\"total_power_export_t1_kwh\":%.3f,", id(hw_return_t1).state);
A("\"total_power_export_t2_kwh\":%.3f,", id(hw_return_t2).state);
A("\"active_power_w\":%.0f,", p_net);
A("\"active_power_l1_w\":%.0f,", l1_w);
A("\"active_power_l2_w\":%.0f,", l2_w);
A("\"active_power_l3_w\":%.0f,", l3_w);
A("\"active_voltage_l1_v\":%.1f,", id(hw_voltage_l1).state);
A("\"active_voltage_l2_v\":%.1f,", id(hw_voltage_l2).state);
A("\"active_voltage_l3_v\":%.1f,", id(hw_voltage_l3).state);
A("\"active_current_a\":%.3f,", i_total);
A("\"active_current_l1_a\":%.3f,", i1);
A("\"active_current_l2_a\":%.3f,", i2);
A("\"active_current_l3_a\":%.3f,", i3);
AF("voltage_sag_l1_count", id(hw_sag_l1).state);
AF("voltage_sag_l2_count", id(hw_sag_l2).state);
AF("voltage_sag_l3_count", id(hw_sag_l3).state);
AF("voltage_swell_l1_count", id(hw_swell_l1).state);
AF("voltage_swell_l2_count", id(hw_swell_l2).state);
AF("voltage_swell_l3_count", id(hw_swell_l3).state);
AF("any_power_fail_count", id(hw_power_fail).state);
AF("long_power_fail_count", id(hw_long_power_fail).state);
A("\"total_gas_m3\":%.3f,", id(hw_gas).state);
A("\"gas_timestamp\":%lld,", gas_ts);
A("\"unique_gas_id\":\"%s\",", id(hw_gas_equipment_id).state.c_str());
A("\"external\":[{"
"\"unique_id\":\"%s\","
"\"type\":\"gas_meter\","
"\"timestamp\":%lld,"
"\"value\":%.3f,"
"\"unit\":\"m3\""
"}]",
id(hw_gas_equipment_id).state.c_str(),
gas_ts,
id(hw_gas).state);
A("}");
#undef A
#undef AF
req->send(200, "application/json", buf);
});
// GET /api → device-identificatie als HWE-P1 (na /api/v1/data registreren)
server->on("/api", HTTP_GET, [](AsyncWebServerRequest *req) {
req->send(200, "application/json",
"{\"product_type\":\"HWE-P1\","
"\"product_name\":\"P1 Meter\","
"\"serial\":\"a3f8c21d904e\","
"\"firmware_version\":\"5.18\","
"\"api_version\":\"v1\"}");
});
esp8266:
restore_from_flash: true
board: d1_mini
# Enable logging
logger:
baud_rate: 0
logs:
component: ERROR
http_request.arduino: ERROR # onderdruk de framework warning
# Enable Home Assistant API
api:
services:
service: set_dsmr_key
variables:
private_key: string
then:
- logger.log:
format: Setting private key %s. Set to empty string to disable
args: [private_key.c_str()]
- globals.set:
id: has_key
value: !lambda "return private_key.length() == 32;"
- lambda: |-
if (private_key.length() == 32)
memcpy(id(stored_decryption_key), private_key.c_str(), 32);
id(dsmr_instance).set_decryption_key(private_key.c_str());
ota:
platform: esphome
dashboard_import:
package_import_url: github://zuidwijk/dsmr/slimmelezer.yaml@main
import_full_config: true
uart:
id: uart_dsmr
baud_rate: 115200
rx_pin: D7
rx_buffer_size: 1700
web_server:
port: 80
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
min_auth_mode: WPA2
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: ${device_name}
captive_portal:
# mDNS: kondigt de SlimmeLezer+ aan als HomeWizard HWE-P1
mdns:
services:
- service: _hwenergy
protocol: _tcp
port: 80
txt:
api_enabled: "1"
path: /api/v1
product_name: P1 Meter
product_type: HWE-P1
serial: a3f8c21d904e
globals:
- id: has_key
type: bool
restore_value: yes
initial_value: "false"
- id: stored_decryption_key
type: char[32]
restore_value: yes
- id: smartevse_integration # SmartEVSE addition
type: bool
- id: smartevse_error # SmartEVSE addition
type: int
- id: last_telegram # HomeWizard API telegram endpoint
type: std::string
restore_value: no
initial_value: '""'
dsmr:
uart_id: uart_dsmr
id: dsmr_instance
max_telegram_length: 1700
# For Luxembourg users set here your decryption key
#decryption_key: !secret decryption_key // enable this when using decryption for Luxembourg; key like '00112233445566778899AABBCCDDEEFF'
sensor:
- platform: dsmr
energy_delivered_lux:
name: "Energy Consumed Luxembourg"
energy_delivered_tariff1:
id: hw_energy_t1 # HomeWizard API
name: "Energy Consumed Tariff 1"
energy_delivered_tariff2:
id: hw_energy_t2 # HomeWizard API
name: "Energy Consumed Tariff 2"
energy_returned_lux:
name: "Energy Produced Luxembourg"
energy_returned_tariff1:
id: hw_return_t1 # HomeWizard API
name: "Energy Produced Tariff 1"
energy_returned_tariff2:
id: hw_return_t2 # HomeWizard API
name: "Energy Produced Tariff 2"
power_delivered:
id: hw_power_delivered # HomeWizard API
name: "Power Consumed"
accuracy_decimals: 3
power_returned:
id: hw_power_returned # HomeWizard API
name: "Power Produced"
accuracy_decimals: 3
electricity_failures:
id: hw_power_fail # HomeWizard API
name: "Electricity Failures"
icon: mdi:alert
electricity_long_failures:
id: hw_long_power_fail # HomeWizard API
name: "Long Electricity Failures"
icon: mdi:alert
voltage_sag_l1:
id: hw_sag_l1 # HomeWizard API
name: "Voltage Sags Phase 1"
voltage_sag_l2:
id: hw_sag_l2 # HomeWizard API
name: "Voltage Sags Phase 2"
voltage_sag_l3:
id: hw_sag_l3 # HomeWizard API
name: "Voltage Sags Phase 3"
voltage_swell_l1:
id: hw_swell_l1 # HomeWizard API
name: "Voltage Swells Phase 1"
voltage_swell_l2:
id: hw_swell_l2 # HomeWizard API
name: "Voltage Swells Phase 2"
voltage_swell_l3:
id: hw_swell_l3 # HomeWizard API
name: "Voltage Swells Phase 3"
voltage_l1:
id: hw_voltage_l1 # HomeWizard API
name: "Voltage Phase 1"
voltage_l2:
id: hw_voltage_l2 # HomeWizard API
name: "Voltage Phase 2"
voltage_l3:
id: hw_voltage_l3 # HomeWizard API
name: "Voltage Phase 3"
current_l1:
id: current_l1 # SmartEVSE + HomeWizard API
name: "Current Phase 1"
current_l2:
id: current_l2 # SmartEVSE + HomeWizard API
name: "Current Phase 2"
current_l3:
id: current_l3 # SmartEVSE + HomeWizard API
name: "Current Phase 3"
power_delivered_l1:
id: hw_power_del_l1 # HomeWizard API
name: "Power Consumed Phase 1"
accuracy_decimals: 3
power_delivered_l2:
id: hw_power_del_l2 # HomeWizard API
name: "Power Consumed Phase 2"
accuracy_decimals: 3
power_delivered_l3:
id: hw_power_del_l3 # HomeWizard API
name: "Power Consumed Phase 3"
accuracy_decimals: 3
power_returned_l1:
id: power_returned_l1 # SmartEVSE + HomeWizard API
name: "Power Produced Phase 1"
accuracy_decimals: 3
power_returned_l2:
id: power_returned_l2 # SmartEVSE + HomeWizard API
name: "Power Produced Phase 2"
accuracy_decimals: 3
power_returned_l3:
id: power_returned_l3 # SmartEVSE + HomeWizard API
name: "Power Produced Phase 3"
accuracy_decimals: 3
gas_delivered:
id: hw_gas # HomeWizard API
name: "Gas Consumed"
gas_delivered_be:
name: "Gas Consumed Belgium"
- platform: uptime
name: "SlimmeLezer Uptime"
update_interval: 60s
- platform: wifi_signal
id: hw_wifi_signal # HomeWizard API
name: "SlimmeLezer Wi-Fi Signal"
update_interval: 60s
text_sensor:
- platform: dsmr
identification:
id: hw_identification # HomeWizard API
name: "DSMR Identification"
equipment_id:
id: hw_equipment_id # HomeWizard API (unique_id)
name: "Equipment ID"
gas_equipment_id:
id: hw_gas_equipment_id # HomeWizard API (unique_gas_id)
name: "Gas Equipment ID"
p1_version:
id: hw_p1_version # HomeWizard API
name: "DSMR Version"
p1_version_be:
name: "DSMR Version Belgium"
electricity_tariff: # SmartEVSE + HomeWizard API
id: hw_tariff
name: "Electricity tariff"
telegram: # HomeWizard API telegram endpoint
id: hw_telegram
internal: true
on_value:
then:
- lambda: |-
id(last_telegram) = x;
- platform: wifi_info
ip_address:
name: "SlimmeLezer IP Address"
ssid:
name: "SlimmeLezer Wi-Fi SSID"
bssid:
name: "SlimmeLezer Wi-Fi BSSID"
- platform: version
name: "ESPHome Version"
hide_timestamp: true
# SmartEVSE additions
binary_sensor:
- platform: template
name: "SmartEVSE API"
device_class: connectivity
lambda: "return id(smartevse_error) < 5;"
switch:
- platform: template
name: "SmartEVSE Integration"
optimistic: true
turn_on_action:
- globals.set:
id: smartevse_integration
value: "true"
- globals.set:
id: smartevse_error
value: "5"
turn_off_action:
- globals.set:
id: smartevse_integration
value: "false"
- globals.set:
id: smartevse_error
value: "5"
icon: "mdi:ev-station"
restore_mode: RESTORE_DEFAULT_ON
http_request:
timeout: 1500ms
verify_ssl: false
esp8266_disable_ssl_support: true
interval:
- interval: 2sec
then:
- if:
condition:
lambda: |-
return (id(smartevse_integration) &&
!isnan(id(current_l1).state) &&
!isnan(id(current_l2).state) &&
!isnan(id(current_l3).state));
then:
- http_request.post:
url: !lambda |-
float lw1 = (id(hw_power_del_l1).state - id(power_returned_l1).state) * 1000.0f;
float lw2 = (id(hw_power_del_l2).state - id(power_returned_l2).state) * 1000.0f;
float lw3 = (id(hw_power_del_l3).state - id(power_returned_l3).state) * 1000.0f;
float s1 = (id(hw_voltage_l1).state > 0) ? lw1 / id(hw_voltage_l1).state : 0.0f;
float s2 = (id(hw_voltage_l2).state > 0) ? lw2 / id(hw_voltage_l2).state : 0.0f;
float s3 = (id(hw_voltage_l3).state > 0) ? lw3 / id(hw_voltage_l3).state : 0.0f;
static char url[128];
snprintf(url, sizeof(url),
"http://${smartevse_host}/currents?L1=%.0f&L2=%.0f&L3=%.0f",
s1 * 10, s2 * 10, s3 * 10);
return url;
request_headers:
Content-Length: 0
on_response:
then:
lambda: |-
if (id(smartevse_error) != 0) {
id(smartevse_error) = 0;
}
on_error:
then:
lambda: |-
if (id(smartevse_error) < 5) {
id(smartevse_error) += 1;
} |
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