[TEMT] Added Temt6000 light sensor using a d1 mini (#1550)

Added light sensor TEMPT6000

main/User_config.h

@@ -326,6 +326,7 @@ int lowpowermode = DEFAULT_LOW_POWER_MODE;
 //#define ZsensorHCSR501 "HCSR501"  //ESP8266, Arduino, ESP32,  Sonoff RF Bridge
 //#define ZsensorADC     "ADC"      //ESP8266, Arduino, ESP32
 //#define ZsensorBH1750  "BH1750"   //ESP8266, Arduino, ESP32
+//#define ZsensorTEMT6000 "TEMT6000"  //ESP8266
 //#define ZsensorTSL2561 "TSL2561"  //ESP8266, Arduino, ESP32
 //#define ZsensorBME280  "BME280"   //ESP8266, Arduino, ESP32
 //#define ZsensorHTU21   "HTU21"    //ESP8266, Arduino, ESP32

main/ZmqttDiscovery.ino

@@ -752,6 +752,29 @@ void pubMqttDiscovery() {
   }
 #  endif
 
+#  ifdef ZsensorTEMT6000
+#    define TEMT6000parametersCount 3
+  Log.trace(F("TEMT6000Discovery" CR));
+  char* TEMT6000sensor[TEMT6000parametersCount][8] = {
+      {"sensor", "lux", "TEMT6000", "illuminance", jsonLux, "", "", "lx"},
+      {"sensor", "ftcd", "TEMT6000", "", jsonFtcd, "", "", ""},
+      {"sensor", "wattsm2", "TEMT6000", "", jsonWm2, "", "", "wm²"}
+      //component type,name,availability topic,device class,value template,payload on, payload off, unit of measurement
+  };
+
+  for (int i = 0; i < TEMT6000parametersCount; i++) {
+    //trc(TEMT6000sensor[i][1]);
+    createDiscovery(TEMT6000sensor[i][0],
+                    subjectTEMT6000toMQTT, TEMT6000sensor[i][1], (char*)getUniqueId(TEMT6000sensor[i][1], TEMT6000sensor[i][2]).c_str(),
+                    will_Topic, TEMT6000sensor[i][3], TEMT6000sensor[i][4],
+                    TEMT6000sensor[i][5], TEMT6000sensor[i][6], TEMT6000sensor[i][7],
+                    0, Gateway_AnnouncementMsg, will_Message, true, "",
+                    "", "", "", "", false, // device name, device manufacturer, device model, device ID, retain
+                    stateClassNone //State Class
+    );
+  }
+#  endif
+
 #  ifdef ZsensorTSL2561
 #    define TSL2561parametersCount 3
   Log.trace(F("TSL2561Discovery" CR));

main/ZsensorTEMT6000.ino

@@ -0,0 +1,77 @@
+/*  
+  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 the Light Meter Addon based on modules with a TEMT6000:
+   - Measures ambient Light Intensity in Lux (lx), Foot Candela (ftcd) and Watt/m^2 (wattsm2)
+   - Required Hardware Module: TEMT6000
+   - Dependencies: none
+
+   Connection Scheme:
+   --------------------
+
+   TEMT6000------> ESP8266
+   ==============================================
+   Vcc ---------> 3.3V
+   GND ---------> GND
+   SIG ---------> A0
+
+    Copyright: (c) Andre Greyling - this is a modified copy of Chris Broekema
+  
+    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 <http://www.gnu.org/licenses/>.
+*/
+#include "User_config.h"
+
+#ifdef ZsensorTEMT6000
+
+#  include "Wire.h"
+#  include "math.h"
+
+void setupZsensorTEMT6000() {
+  Log.notice(F("Setup TEMT6000 on pin: %i" CR), TEMT6000LIGHTSENSORPIN);
+  pinMode(TEMT6000LIGHTSENSORPIN, INPUT);
+}
+
+void MeasureLightIntensityTEMT6000() {
+  if (millis() > (timetemt6000 + TimeBetweenReadingtemt6000)) {
+    static uint32_t persisted_lux;
+    timetemt6000 = millis();
+
+    Log.trace(F("Creating TEMT6000 buffer" CR));
+    StaticJsonDocument<JSON_MSG_BUFFER> jsonBuffer;
+    JsonObject TEMT6000data = jsonBuffer.to<JsonObject>();
+
+    float volts = analogRead(TEMT6000LIGHTSENSORPIN) * 5.0 / 1024.0;
+    float amps = volts / 10000.0; // across 10,000 Ohms
+    float microamps = amps * 1000000;
+    float lux = microamps * 2.0;
+
+    if (persisted_lux != lux || temt6000_always) {
+      persisted_lux = lux;
+
+      TEMT6000data["lux"] = (float)lux;
+      TEMT6000data["ftcd"] = (float)(lux) / 10.764;
+      TEMT6000data["wattsm2"] = (float)(lux) / 683.0;
+
+      pub(subjectTEMT6000toMQTT, TEMT6000data);
+    } else {
+      Log.trace(F("Same lux value, do not send" CR));
+    }
+  }
+}
+#endif

main/config_TEMT6000.h

@@ -0,0 +1,55 @@
+/*  
+  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 the Light Meter Addon based on modules with a TEMT6000:
+   - Measures ambient Light Intensity in Lux (lx), Foot Candela (ftcd) and Watt/m^2 (wattsm2)
+   - Required Hardware Module: TEMT6000
+   - Dependencies: none
+
+   Connection Scheme:
+   --------------------
+
+   TEMT6000 ----> ESP8266
+   ==============================================
+   Vcc ---------> 3.3V
+   GND ---------> GND
+   SIG ---------> A0
+
+    Copyright: (c) Andre Greyling - this is a modified copy of Chris Broekema
+  
+    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 <http://www.gnu.org/licenses/>.
+*/
+#ifndef config_TEMT6000_h
+#define config_TEMT6000_h
+
+extern void setupTEMT6000();
+extern void TEMT6000toMQTT();
+
+#define temt6000_always            true // if false only send current value if it has changed
+#define TEMT6000LIGHTSENSORPIN     A0 //Ambient light sensor reading = ADC0
+#define TimeBetweenReadingtemt6000 10000 //10000 ms
+
+/*----------------------------USER PARAMETERS-----------------------------*/
+/*-------------DEFINE YOUR MQTT PARAMETERS BELOW----------------*/
+#define subjectTEMT6000toMQTT "/LIGHTtoMQTT"
+
+//Time used to wait for an interval before resending measured values
+unsigned long timetemt6000 = 0;
+
+#endif

main/main.ino

@@ -109,6 +109,9 @@ struct GfSun2000Data {};
 #ifdef ZsensorBH1750
 #  include "config_BH1750.h"
 #endif
+#ifdef ZsensorTEMT6000
+#  include "config_TEMT6000.h"
+#endif
 #ifdef ZsensorTSL2561
 #  include "config_TSL2561.h"
 #endif
@@ -872,6 +875,10 @@ void setup() {
   setupZsensorBH1750();
   modules.add(ZsensorBH1750);
 #endif
+#ifdef ZsensorTEMT6000
+  setupZsensorTEMT6000();
+  modules.add(ZsensorTEMT6000);
+#endif
 #ifdef ZsensorTSL2561
   setupZsensorTSL2561();
   modules.add(ZsensorTSL2561);
@@ -1638,6 +1645,9 @@ void loop() {
 #ifdef ZsensorBH1750
       MeasureLightIntensity(); //Addon to measure Light Intensity with a BH1750
 #endif
+#ifdef ZsensorTEMT6000
+      MeasureLightIntensityTEMT6000();
+#endif
 #ifdef ZsensorTSL2561
       MeasureLightIntensityTSL2561();
 #endif