Added software reset

tests/sensor.py

@@ -27,6 +27,8 @@ class Sensor():
             'SCD4x_temperature_offset': 40006, \
             'MODBUS_address': 40007, \
             'baudrate': 40008 }
+    reset_register = 40100
+    reset_magic_number = 0xABCD
     # readout and error counters
     readout_total = 0
     readout_error_invalid_response = 0 # checksum error: bus transmission corrupted?
@@ -49,6 +51,12 @@ class Sensor():
     def close(self):
         self.serial.serial.close()
         self.serial = None
+    def reset(self):
+        try:
+            self.write_register(self.reset_register, self.reset_magic_number)
+            return False # got answer => failed to reset
+        except minimalmodbus.NoResponseError:
+            return True # no answer => reset successful
     # High level read functions
     @property
     def CO2(self):