diff --git a/main/User_config.h b/main/User_config.h
index 78fee94..2c16e38 100644
--- a/main/User_config.h
+++ b/main/User_config.h
@@ -315,6 +315,7 @@ int lowpowermode = DEFAULT_LOW_POWER_MODE;
//#define ZsensorTSL2561 "TSL2561" //ESP8266, Arduino, ESP32
//#define ZsensorBME280 "BME280" //ESP8266, Arduino, ESP32
//#define ZsensorHTU21 "HTU21" //ESP8266, Arduino, ESP32
+//#define ZsensorLM75 "LM75" //ESP8266, Arduino, ESP32
//#define ZsensorDHT "DHT" //ESP8266, Arduino, ESP32, Sonoff RF Bridge
//#define ZsensorDS1820 "DS1820" //ESP8266, Arduino, ESP32
//#define ZsensorGPIOKeyCode "GPIOKeyCode" //ESP8266, Arduino, ESP32
diff --git a/main/ZmqttDiscovery.ino b/main/ZmqttDiscovery.ino
index c557a22..3bd1f47 100644
--- a/main/ZmqttDiscovery.ino
+++ b/main/ZmqttDiscovery.ino
@@ -554,6 +554,21 @@ void pubMqttDiscovery() {
}
# endif
+# ifdef ZsensorLM75
+ Log.trace(F("LM75Discovery" CR));
+ char* LM75sensor[8] = {"sensor", "temp", "htu", "temperature", jsonTempc, "", "", "°C"};
+ //component type,name,availability topic,device class,value template,payload on, payload off, unit of measurement
+
+ createDiscovery(LM75sensor[0],
+ LM75TOPIC, LM75sensor[1], (char*)getUniqueId(LM75sensor[1], LM75sensor[2]).c_str(),
+ will_Topic, LM75sensor[3], LM75sensor[4],
+ LM75sensor[5], LM75sensor[6], LM75sensor[7],
+ 0, "", "", true, "",
+ "", "", "", "", false, // device name, device manufacturer, device model, device MAC, retain
+ stateClassNone //State Class
+ );
+# endif
+
# ifdef ZsensorAHTx0
# define AHTparametersCount 2
Log.trace(F("AHTx0Discovery" CR));
diff --git a/main/ZsensorLM75.ino b/main/ZsensorLM75.ino
new file mode 100644
index 0000000..d1dded1
--- /dev/null
+++ b/main/ZsensorLM75.ino
@@ -0,0 +1,99 @@
+/*
+ OpenMQTTGateway Addon - ESP8266 or Arduino program for home automation
+
+ Act as a wifi or ethernet gateway between your 433mhz/infrared IR signal and a MQTT broker
+ Send and receiving command by MQTT
+
+ This is a Temperature Addon:
+ - Measures Temperature
+ - Generates Values for: Temperature in degrees C and F
+ - Required Hardware Module: LM75 or NCT75
+ - Required Library: jeremycole/I2C Temperature Sensors derived from the LM75
+
+ Connection Schemata:
+ --------------------
+
+ LM75 ------> Arduino Uno ----------> ESP8266
+ ==============================================
+ Vcc ---------> 5V -------------------> Vu (5V)
+ GND ---------> GND ------------------> GND
+ SCL ---------> Pin A5 ---------------> D1
+ SDA ---------> Pin A4 ---------------> D2
+
+ This file is part of OpenMQTTGateway.
+
+ OpenMQTTGateway is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ OpenMQTTGateway is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+*/
+#include "User_config.h"
+
+#ifdef ZsensorLM75
+# include
+
+# include "Temperature_LM75_Derived.h"
+# include "Wire.h" // Library for communication with I2C / TWI devices
+# include "config_LM75.h"
+
+//Time used to wait for an interval before resending measured values
+unsigned long timelm75 = 0;
+
+//Global sensor object
+Generic_LM75 lm75Sensor;
+
+void setupZsensorLM75() {
+ delay(10); // Gives the Sensor enough time to turn on
+ Log.notice(F("LM75 Initialized - begin()" CR));
+
+# if defined(ESP32)
+ Wire.begin(I2C_SDA, I2C_SCL);
+# elif defined(ESP8266)
+ Wire.begin();
+# endif
+}
+
+void MeasureTemp() {
+ if (millis() > (timelm75 + TimeBetweenReadinglm75)) {
+ Log.trace(F("Read LM75 Sensor" CR));
+
+ timelm75 = millis();
+ static float persisted_lm75_tempc;
+
+ float lm75TempC = lm75Sensor.readTemperatureC();
+
+ if (lm75TempC >= 998) {
+ Log.error(F("Failed to read from sensor LM75!" CR));
+ return;
+ }
+
+ // Check if reads failed and exit early (to try again).
+ if (isnan(lm75TempC)) {
+ Log.error(F("Failed to read from sensor HLM75!" CR));
+ } else {
+ Log.notice(F("Creating LM75 buffer" CR));
+ StaticJsonDocument jsonBuffer;
+ JsonObject LM75data = jsonBuffer.to();
+ // Generate Temperature in degrees C
+ if (lm75TempC != persisted_lm75_tempc || lm75_always) {
+ float lm75TempF = (lm75TempC * 1.8) + 32;
+ LM75data["tempc"] = (float)lm75TempC;
+ LM75data["tempf"] = (float)lm75TempF;
+ pub(LM75TOPIC, LM75data);
+ } else {
+ Log.notice(F("Same Temp. Don't send it" CR));
+ }
+ }
+ persisted_lm75_tempc = lm75TempC;
+ }
+}
+
+#endif
diff --git a/main/config_LM75.h b/main/config_LM75.h
new file mode 100644
index 0000000..9b42cb9
--- /dev/null
+++ b/main/config_LM75.h
@@ -0,0 +1,58 @@
+/*
+ OpenMQTTGateway Addon - ESP8266 or Arduino program for home automation
+
+ Act as a wifi or ethernet gateway between your 433mhz/infrared IR signal and a MQTT broker
+ Send and receiving command by MQTT
+
+ This is a Temperature Addon:
+ - Measures Temperature
+ - Generates Values for: Temperature in degrees C and F
+ - Required Hardware Module: LM75 or NCT75
+ - Required Library: jeremycole/I2C Temperature Sensors derived from the LM75
+
+ Connection Schemata:
+ --------------------
+
+ LM75 ------> Arduino Uno ----------> ESP8266
+ ==============================================
+ Vcc ---------> 5V -------------------> Vu (5V)
+ GND ---------> GND ------------------> GND
+ SCL ---------> Pin A5 ---------------> D1
+ SDA ---------> Pin A4 ---------------> D2
+
+ This file is part of OpenMQTTGateway.
+
+ OpenMQTTGateway is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ OpenMQTTGateway is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+*/
+#ifndef config_LM75_h
+#define config_LM75_h
+
+extern void setupLM75();
+extern void LM75toMQTT();
+
+#define lm75_always true // if false when the current value of the parameter is the same as previous one don't send it by MQTT
+#define TimeBetweenReadinglm75 30000
+
+/*----------------------------USER PARAMETERS-----------------------------*/
+/*-------------DEFINE YOUR MQTT PARAMETERS BELOW----------------*/
+#define LM75TOPIC "/TEMPtoMQTT/lm75"
+
+#if defined(ESP32)
+# if !defined(I2C_SDA) || !defined(I2C_SCL)
+# define I2C_SDA 16
+# define I2C_SCL 0
+# endif
+#endif
+
+#endif
\ No newline at end of file
diff --git a/main/main.ino b/main/main.ino
index ef0d7bf..a45e54d 100644
--- a/main/main.ino
+++ b/main/main.ino
@@ -114,6 +114,9 @@ struct GfSun2000Data {};
#ifdef ZsensorHTU21
# include "config_HTU21.h"
#endif
+#ifdef ZsensorLM75
+# include "config_LM75.h"
+#endif
#ifdef ZsensorAHTx0
# include "config_AHTx0.h"
#endif
@@ -720,6 +723,10 @@ void setup() {
setupZsensorHTU21();
modules.add(ZsensorHTU21);
#endif
+#ifdef ZsensorLM75
+ setupZsensorLM75();
+ modules.add(ZsensorLM75);
+#endif
#ifdef ZsensorAHTx0
setupZsensorAHTx0();
modules.add(ZsensorAHTx0);
@@ -1429,6 +1436,9 @@ void loop() {
#ifdef ZsensorHTU21
MeasureTempHum(); //Addon to measure Temperature, Humidity, of a HTU21 sensor
#endif
+#ifdef ZsensorLM75
+ MeasureTemp(); //Addon to measure Temperature of an LM75 sensor
+#endif
#ifdef ZsensorAHTx0
MeasureAHTTempHum(); //Addon to measure Temperature, Humidity, of an 'AHTx0' sensor
#endif
diff --git a/platformio.ini b/platformio.ini
index daba70f..1aea2e4 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -140,6 +140,7 @@ emodbus = miq19/eModbus@1.0.0
gfSunInverter = https://github.com/BlackSmith/GFSunInverter.git#v1.0.1
decoder = https://github.com/theengs/decoder.git#v0.9.5
ssd1306 = thingpulse/ESP8266 and ESP32 OLED driver for SSD1306 displays@^4.3.0
+lm75 = jeremycole/I2C Temperature Sensors derived from the LM75@^1.0.3
[env]
framework = arduino
@@ -253,6 +254,7 @@ lib_deps =
${libraries.bme280}
${libraries.bmp180}
${libraries.htu21}
+ ${libraries.lm75}
${libraries.ahtx0}
${libraries.unifiedsensor}
${libraries.dht}
@@ -1014,6 +1016,7 @@ lib_deps =
${libraries.bme280}
${libraries.bmp180}
;${libraries.htu21}
+ ${libraries.lm75}
${libraries.ahtx0}
${libraries.unifiedsensor}
${libraries.dht}