Add script that sets room temperature to sensor value

BSB_LAN/custom_functions/README.md

@@ -35,6 +35,10 @@ This script connects to an NTP time server and writes the accurate time to the h
 
 This script collects the current temperature of registered MAX! thermostats, calculates an avaerage and sends this average as the current room temperature to the heater (via parameter 10000).
 
+## Set room temperature to sensor value
+
+This script takes the value of one parameter (for examle 20500.1 for the temperature of the first MAX! device) and sends it to the room temperature parameter (10000 for BSB/LPB, 15008 for PPS) every five minutes. This way, BSB-LAN can replace the room temperature sensor function of a room unit when using one of the devices/sensors that BSB-LAN can access out-of-the-box (DS18B20, DHT22, BME280 sensors or MAX! devices).
+
 ## Emulation of Room Unit and Presence Buttons
 
 _The pushbutton functionality will need adjustments and is not compatible out-of-the-box from version 3 onwards._  

BSB_LAN/custom_functions/Set_room_temperature_to_sensor_value/BSB_LAN_custom.h

@@ -0,0 +1,20 @@
+/* 
+ * Run every five minutes, this code takes the value of one parameter, 
+ * in this case 20500.1 (which contains the measured temperature of the first MAX! device),
+ * and sends it to the room temperature parameter (10000 for BSB/LPB, 15008 for PPS).
+*/
+
+// Set the parameter that refers to the temperature sensor here:
+float sensor_parameter = 20500.1;  // 20500.1 is the measured temperature of the first MAX! device
+
+if (custom_timer > custom_timer_compare+300000) {    // every five minutes  
+  custom_timer_compare = millis();
+  query(sensor_parameter);
+  char set_temp[6];
+  strcpy(set_temp, decodedTelegram.value);
+  if (bus->getBusType() == BUS_PPS) {
+    set(15008, set_temp, 1);  // PPS: Send sensor value to room temperature parameter 15008
+  } else {
+    set(10000, set_temp, 0);  // BSB/LPB: Send sensor value to room temperature parameter 10000
+  }
+}