4-wire resistance measurement feature TBT

config/machine_settings/defaults.ini

@@ -70,6 +70,7 @@ status_pin: 0
 ; port: ?
 baudrate: 115200
 cable_resistance: 0.75
+4wire: disabled
 
 [neo_pixels]
 ; port: ?

config/machine_settings/st-ten-2.ini

@@ -13,6 +13,7 @@ port: COM6
 
 [multicomp]
 port: COM10
+4wire: enabled
 
 [recipe]
 recipe_name_field: cod finito cliente

src/components/multicomp_730424.py

@@ -40,7 +40,10 @@ class Multicomp730424(Component):
         self.write("FUNC1 \"RES\"")
         self.write("RATE F")
         self.write("AUTO 0")
-        self.write("CONF:RES 500")
+        if self.config[self.name]["4wire"] is "enabled":
+            self.write("CONF:FRES 500")
+        else:
+            self.write("CONF:RES 500")
 
     def set_resistance_scale(self, resistance=None):
         if resistance is None:
@@ -79,6 +82,7 @@ class Multicomp730424(Component):
             self.write(command)
             info[value_name] = self.read()
         if isinstance(info["measure"], float) and info["measure"] < 1e9:
-            info["measure"] -= self.cable_resistance
+            if self.config[self.name]["4wire"] is not "enabled":
+                info["measure"] -= self.cable_resistance
         self.log.debug(str(info))
         super()._get([info])