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Improve mqtt support, add battery percentage and voltage

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This commit is contained in:
Maximilian Mewes 2024-08-19 22:07:08 +02:00
parent 8a1df1e700
commit e5a426419c
1 changed files with 71 additions and 7 deletions
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78
usermods/Battery/usermod_v2_Battery.h
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@ -115,6 +115,58 @@ class UsermodBattery : public Usermod
#endif
}
#ifndef WLED_DISABLE_MQTT
void addMqttSensor(const String &name, const String &type, const String &topic, const String &deviceClass, const String &unitOfMeasurement = "", const bool &isDiagnostic = false)
{
// String t = String(F("homeassistant/sensor/")) + mqttClientID + F("/") + name + F("/config");
StaticJsonDocument<600> doc;
char uid[128], json_str[1024], buf[128];
doc[F("name")] = name;
doc[F("stat_t")] = topic;
sprintf_P(uid, PSTR("%s_%s_sensor"), name, escapedMac.c_str());
doc[F("uniq_id")] = uid;
doc[F("dev_cla")] = deviceClass;
// doc[F("exp_aft")] = 1800;
if(type == "binary_sensor") {
doc[F("pl_on")] = "on";
doc[F("pl_off")] = "off";
}
if(unitOfMeasurement != "")
doc[F("unit_of_measurement")] = unitOfMeasurement;
if(isDiagnostic)
doc[F("entity_category")] = "diagnostic";
JsonObject device = doc.createNestedObject(F("device")); // attach the sensor to the same device
device[F("name")] = serverDescription;
device[F("ids")] = String(F("wled-sensor-")) + mqttClientID;
device[F("mf")] = F(WLED_BRAND);
device[F("mdl")] = F(WLED_PRODUCT_NAME);
device[F("sw")] = versionString;
sprintf_P(buf, PSTR("homeassistant/%s/%s/%s/config"), type, mqttClientID, uid);
DEBUG_PRINTLN(buf);
size_t payload_size = serializeJson(doc, json_str);
DEBUG_PRINTLN(json_str);
mqtt->publish(buf, 0, true, json_str, payload_size);
}
void publishMqtt(const char* topic, const char* state)
{
if (WLED_MQTT_CONNECTED) {
char buf[128];
snprintf_P(buf, 127, PSTR("%s/%s"), mqttDeviceTopic, topic);
mqtt->publish(buf, 0, false, state);
}
}
#endif
public:
//Functions called by WLED
@ -223,13 +275,8 @@ class UsermodBattery : public Usermod
turnOff();
#ifndef WLED_DISABLE_MQTT
// SmartHome stuff
// still don't know much about MQTT and/or HA
if (WLED_MQTT_CONNECTED) {
char buf[64]; // buffer for snprintf()
snprintf_P(buf, 63, PSTR("%s/voltage"), mqttDeviceTopic);
mqtt->publish(buf, 0, false, String(bat->getVoltage()).c_str());
}
publishMqtt("battery", String(bat->getLevel(), 0).c_str());
publishMqtt("voltage", String(bat->getVoltage()).c_str());
#endif
}
@ -513,6 +560,23 @@ class UsermodBattery : public Usermod
return !battery[FPSTR(_readInterval)].isNull();
}
#ifndef WLED_DISABLE_MQTT
void onMqttConnect(bool sessionPresent)
{
// Home Assistant Autodiscovery
// battery percentage
char mqttBatteryTopic[128];
snprintf_P(mqttBatteryTopic, 127, PSTR("%s/battery"), mqttDeviceTopic);
this->addMqttSensor(F("Battery"), "sensor", mqttBatteryTopic, "battery", "%", true);
// voltage
char mqttVoltageTopic[128];
snprintf_P(mqttVoltageTopic, 127, PSTR("%s/voltage"), mqttDeviceTopic);
this->addMqttSensor(F("Voltage"), "sensor", mqttVoltageTopic, "voltage", "V", true);
}
#endif
/**
* TBD: Generate a preset sample for low power indication
* a button on the config page would be cool, currently not possible