[python] i2c controller bus as a parameter

controller/python/controller.py

@@ -5,7 +5,6 @@ from typing import Any, Optional
 
 class Controller:
 
-    I2C_BUS = 8
     I2C_ADDR = 0x57
 
     WHO_AM_I = 0x0F
@@ -14,7 +13,8 @@ class Controller:
     ENCODER_TICKS = 0x32
     STATUS = 0x36
 
-    def __init__(self):
+    def __init__(self, i2cbus=8):
+        self.I2C_BUS = i2cbus
         self.i2c = smbus.SMBus(self.I2C_BUS)
 
     def _read(self, command, n, unpack_spec) -> tuple: