Merge pull request #14 from faludi/xbee-implementation

Suggested changes to accommodate XBee Cellular platform

Author: sfe-SparkFro

qwiic_i2c/circuitpy_i2c.py

@@ -110,7 +110,10 @@ def __init__(self):
 	def isPlatform(cls):
 
 		# circuit py is mostly - for our purposes - on the samd21 or samd51 based boards
-		return os.uname().sysname in ('samd21', 'samd51')
+		try:
+			return os.uname().sysname in ('samd21', 'samd51')
+		except AttributeError:
+			return False
 
 
 #-------------------------------------------------------------------------		

qwiic_i2c/i2c_driver.py

@@ -59,9 +59,6 @@
 
 """
 
-from __future__ import print_function
-
-
 #-----------------------------------------------------------------------------
 # Platform
 #

qwiic_i2c/linux_i2c.py

@@ -36,8 +36,6 @@
 # SOFTWARE.
 #==================================================================================
 
-from __future__ import print_function
-
 from .i2c_driver import I2CDriver
 
 import sys

qwiic_i2c/micropython_i2c.py

@@ -43,8 +43,13 @@
 def _connectToI2CBus(freq=400000):
 	try:
 		from machine import I2C, Pin
-		# Todo: Don't hard code I2C pin and port!
-		return I2C(id=1, scl=Pin(19), sda=Pin(18), freq=freq)
+		if sys.platform == 'rp2':
+			# Todo: Don't hard code I2C pin and port!
+			return I2C(id=1, scl=Pin(19), sda=Pin(18), freq=freq)
+		elif 'xbee' in sys.platform:
+			return I2C(id=1, freq=freq)
+		else:
+			raise Exception("Unknown MicroPython platform: " + sys.platform)
 	except Exception as e:
 		print(str(e))
 		print('error: failed to connect to i2c bus')
@@ -62,7 +67,7 @@ def __init__(self):
 	@classmethod
 	def isPlatform(cls):
 		try:
-			return sys.implementation.name == 'micropython'
+			return 'micropython' in sys.implementation
 		except:
 			return False