Index: firmware/App/Drivers/TemperatureSensors.c
===================================================================
diff -u -r3417933e6edf61a914c428e2fa944b3b349272a4 -rb83b525617ddffecc06b81c97e2534cdd3446c47
--- firmware/App/Drivers/TemperatureSensors.c	(.../TemperatureSensors.c)	(revision 3417933e6edf61a914c428e2fa944b3b349272a4)
+++ firmware/App/Drivers/TemperatureSensors.c	(.../TemperatureSensors.c)	(revision b83b525617ddffecc06b81c97e2534cdd3446c47)
@@ -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.