Index: firmware/App/Drivers/TemperatureSensors.c
===================================================================
diff -u -r325e67dab10f6666702bf0f1256015b31e58de4f -r3f1b02b5eeec93b2b7ad22f8fffcf3caffaebbaf
--- firmware/App/Drivers/TemperatureSensors.c	(.../TemperatureSensors.c)	(revision 325e67dab10f6666702bf0f1256015b31e58de4f)
+++ firmware/App/Drivers/TemperatureSensors.c	(.../TemperatureSensors.c)	(revision 3f1b02b5eeec93b2b7ad22f8fffcf3caffaebbaf)
@@ -34,6 +34,8 @@
 
 // ********** private definitions **********
 
+#define USE_PT_100                                              1                                               ///< flag to check PT100 use in calculations
+
 #define PRIMARY_HEATER_TEMP_SENSORS_GAIN                        8U                                              ///< Primary heater temperature sensors gain.
 #define PRIMARY_HEATER_TEMP_SENSORS_REF_RESISTANCE              20000                                           ///< Primary heater temperature sensors reference resistance.
 #define PRIMARY_HEATER_TEMP_SENSORS_0_DEGREE_RESISTANCE         1000U                                           ///< Primary heater temperature sensors zero degree resistance.