added support for DS1820 1-wire temperature sensor(s) (#538)

main/config_DS1820.h

@@ -0,0 +1,50 @@
+/*  
+  OpenMQTTGateway  - ESP8266 or Arduino program for home automation 
+
+   Act as a wifi or ethernet gateway between your RF/infrared IR signal  and a MQTT broker
+   Send and receiving command by MQTT
+   
+   This file sets parameters for the integration of 1-wire DS1820 temperature sensors
+  
+    Copyright (c) 2020 Lars Wessels
+  
+    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_DS1820_h
+#define config_DS1820_h
+
+extern void setupZsensorDS1820();
+extern void DS1820toMQTT();
+/*----------------------------USER PARAMETERS-----------------------------*/
+/*-------------DEFINE YOUR MQTT PARAMETERS BELOW----------------*/
+#define OW_TOPIC    "/OneWiretoMQTT/ds1820"
+#define OW_MAX_SENSORS 8 // query max. sensors on 1-wire bus
+#define DS1820_ALWAYS  true // if false only published current temperature if has changed from previous reading
+#define DS1820_INTERVAL_SEC 60 // time between DS1820 readings (seconds)
+#define DS1820_RESOLUTION  10  // conversion times: 9 bit (93.75 ms), 10 bit (187.5 ms), 11 bit (375 ms), 12 bit (750 ms)
+#define DS1820_FAHRENHEIT  false // defaults to Celcius
+#define DS1820_DETAILS  true // publish extented info for each sensor (resolution, address, type)
+#define DS1820_CONV_TIME  2000  // trigger conversion before requesting temperature readings (ms)
+/*-------------------PIN DEFINITIONS----------------------*/
+#if defined(ESP8266)
+  #define DS1820_OWBUS_PIN 2
+#elif defined(ESP32)
+  #define DS1820_OWBUS_PIN 2
+#else
+  #define DS1820_OWBUS_PIN 2
+#endif
+
+#endif