allow the bus to be switch externally

Author: jketterl

Adafruit_PWM_Servo_Driver/Adafruit_I2C.py

@@ -8,9 +8,9 @@
 
 class Adafruit_I2C :
 
-  def __init__(self, address, bus=smbus.SMBus(0), debug=False):
+  def __init__(self, address, bus=0, debug=False):
     self.address = address
-    self.bus = bus
+    self.bus = smbus.SMBus(bus)
     self.debug = debug
 
   def reverseByteOrder(self, data):

Adafruit_PWM_Servo_Driver/Adafruit_PWM_Servo_Driver.py

@@ -26,8 +26,8 @@ class PWM :
   __ALLLED_OFF_L       = 0xFC
   __ALLLED_OFF_H       = 0xFD
 
-  def __init__(self, address=0x40, debug=False):
-    self.i2c = Adafruit_I2C(address)
+  def __init__(self, address=0x40, debug=False, bus=0):
+    self.i2c = Adafruit_I2C(address, bus)
     self.address = address
     self.debug = debug
     if (self.debug):