Added servo example

Author: alan412

external_samples/servo.py

@@ -0,0 +1,42 @@
+from component import Component, PortType, InvalidPortException
+from collections.abc import Callable
+
+class Servo(Component):    
+    # Required methods
+    def __init__(self, ports : list[tuple[PortType, int]]):
+        self.is_pressed = None
+        portType, port = ports[0]
+        if portType != PortType.SERVO_PORT:
+            raise InvalidPortException
+        self.port = port
+    def get_manufacturer(self) -> str:   
+        return "REV Robotics" 
+    def get_name(self) -> str:  
+        return "SRS Servo"
+    def get_part_number(self) -> str:  
+        return "REV-41-1097"
+    def get_url(self) -> str:  
+        return "https://www.revrobotics.com/rev-41-1097/"
+    def get_version(self) -> tuple[int, int, str]: 
+        return (1, 0, "")
+    def stop(self) -> None:
+        # De-energize servo port
+        pass
+    def reset(self) -> None:
+        pass
+    def get_connection_port_type(self) -> list[PortType]:
+        return [PortType.SERVO_PORT]
+    def periodic(self) -> None:
+        pass
+
+    # Component specific methods
+    def set_position(self, pos: float) -> None:
+        '''Set the servo to a position between 0 and 1'''
+        # sends to the hardware the position of the servo
+        pass
+    def set_angle(self, angle: float) -> None:
+        '''Set the servo to an angle between 0 and 270'''
+        self.set_position(angle / 270.0)
+    
+    
+