MCU Temperature usermod

usermods/mcu_temp/mcuTemp.h

@@ -0,0 +1,122 @@
+#pragma once
+
+#include "wled.h"
+
+// 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 methosd 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()
+  {
+    // 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())
+      return;
+
+#ifdef ESP8266 // ESP8266
+    // does not seem possible
+    mcutemp = -1;
+#elif defined(CONFIG_IDF_TARGET_ESP32S2) // ESP32S2
+    mcutemp = -1;
+#else                                    // ESP32 ESP32S3 and ESP32C3
+    mcutemp = roundf(temperatureRead() * 100) / 100;
+#endif
+
+    if (millis() - lastTime > 10000)
+    {
+      char array[10];
+      snprintf(array, sizeof(array), "%f", mcutemp);
+      publishMqtt(array);
+      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;
+    JsonArray lightArr = user.createNestedArray(FPSTR(_name)); // name
+    lightArr.add(mcutemp);                                     // value
+    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
+}

usermods/mcu_temp/readme.md

@@ -0,0 +1,11 @@
+# MCU Temp Usermod
+This usermod adds the temperature readout to the Info tab and also publishes that over the topic `mcutemp` topic.
+
+
+A shown temp of 53,33°C might indicate that the internal temp is not supported.
+
+ESP8266 does not have a internal temp sensor
+
+ESP32S2 seems to crash on reading the sensor -> disabled
+
+Buildflag: `-D USERMOD_MCUTEMP`