Update the examples for busio.

Author: tannewt

examples/servo.py

@@ -1,17 +1,14 @@
 import time
 
 from board import *
-# Use this import for ESP8266 and other boards with software I2C interfaces:
-import bitbangio as io
-# Or use this import for SAMD21 and boards with a native hardware I2C interace:
-#import nativeio as io
+import busio
 
 # Import the PCA9685 servo module.
 from adafruit_pca9685 import servo
 
 
 # Create the I2C bus interface.
-i2c = io.I2C(SCL, SDA)
+i2c = busio.I2C(SCL, SDA)
 
 # Create a simple PCA9685 class instance.
 servos = servo.Servos(i2c)

examples/simpletest.py

@@ -1,15 +1,11 @@
 from board import *
-# Use this import for ESP8266 and other boards with software I2C interfaces:
-import bitbangio as io
-# Or use this import for SAMD21 and boards with a native hardware I2C interace:
-#import nativeio as io
+import busio
 
 # Import the PCA9685 module.
 from adafruit_pca9685 import pca9685
 
-
 # Create the I2C bus interface.
-i2c = io.I2C(SCL, SDA)
+i2c = busio.I2C(SCL, SDA)
 
 # Create a simple PCA9685 class instance.
 pca = pca9685.PCA9685(i2c)