Files
Frank c68890992c mcuTemp improvements
* allow users to en/disable usermod
* limit rate of reading the sensor (once in 8 seconds)
* add slight filtering
* skip invalid readings
2023-12-16 18:49:50 +01:00

134 lines
3.7 KiB
C++

#pragma once
#include "wled.h"
// constants
#define MCUT_READ_TIME_MS 7500 // read once in 7.5 seconds
// class name. Use something descriptive and leave the ": public Usermod" part :)
class mcuTemp : public Usermod
{
private:
float mcutemp = 0;
// any private methods should go here (non-inline method should be defined out of class)
void publishMqtt(const char *state, bool retain = false); // example for publishing MQTT message
public:
mcuTemp(const char *name, bool enabled) : Usermod(name, enabled) {} // WLEDMM
void setup()
{
}
void connected()
{
}
void loop()
{
static unsigned long lastMQQTTime = 0;
// if usermod is disabled or called during strip updating just exit
// NOTE: on very long strips strip.isUpdating() may always return true so update accordingly
if (!enabled || (strip.isUpdating() && (millis() - lastTime < MCUT_READ_TIME_MS)))
return;
if (millis() - lastTime < MCUT_READ_TIME_MS) return; // reading each 8 seconds should be enough
#ifdef ESP8266 // ESP8266
// does not seem possible
mcutemp = -1;
#elif defined(CONFIG_IDF_TARGET_ESP32S2) // ESP32S2
mcutemp = -1;
#else // ESP32 ESP32S3 and ESP32C3
float newmcutemp = roundf(temperatureRead() * 10) / 10;
if (abs(newmcutemp - 53.3f) > 0.05f) mcutemp = (mcutemp + 2.0f * newmcutemp) / 3.0f; // skip error value (128 => 53.3deg), apply some filtering
#endif
#ifndef WLED_DISABLE_MQTT
if (millis() - lastMQQTTime > 15000)
{
char array[10];
snprintf(array, sizeof(array), "%3.1f", mcutemp);
publishMqtt(array);
lastMQQTTime = millis();
}
#endif
lastTime = millis();
}
/*
* addToJsonInfo() can be used to add custom entries to the /json/info part of the JSON API.
* Creating an "u" object allows you to add custom key/value pairs to the Info section of the WLED web UI.
* Below it is shown how this could be used for e.g. a light sensor
*/
void addToJsonInfo(JsonObject &root)
{
// if "u" object does not exist yet wee need to create it
JsonObject user = root["u"];
if (user.isNull())
user = root.createNestedObject("u");
// this code adds "u":{"ExampleUsermod":[20," lux"]} to the info object
// int reading = 20;
if (!enabled) return;
JsonArray lightArr = user.createNestedArray(FPSTR(_name)); // name
lightArr.add(roundf(10.0f * mcutemp)/10.0f); // value, rounded to 1 decimal
lightArr.add(F(" °C")); // unit
// if you are implementing a sensor usermod, you may publish sensor data
// JsonObject sensor = root[F("sensor")];
// if (sensor.isNull()) sensor = root.createNestedObject(F("sensor"));
// temp = sensor.createNestedArray(F("light"));
// temp.add(reading);
// temp.add(F("lux"));
}
/*
void addToJsonState(JsonObject &root)
{
}
void readFromJsonState(JsonObject &root)
{
}
void addToConfig(JsonObject &root)
{
}
bool readFromConfig(JsonObject &root)
{
return true;
}
void appendConfigData()
{
}
void handleOverlayDraw()
{
}
*/
/*
* getId() allows you to optionally give your V2 usermod an unique ID (please define it in const.h!).
* This could be used in the future for the system to determine whether your usermod is installed.
*/
uint16_t getId()
{
return USERMOD_ID_MCUTEMP;
}
};
void mcuTemp::publishMqtt(const char *state, bool retain)
{
#ifndef WLED_DISABLE_MQTT
// Check if MQTT Connected, otherwise it will crash the 8266
if (WLED_MQTT_CONNECTED)
{
char subuf[64];
strcpy(subuf, mqttDeviceTopic);
strcat_P(subuf, PSTR("/mcutemp"));
mqtt->publish(subuf, 0, retain, state);
}
#endif
}