Merge pull request #15 from mrmcwethy/examples

added examples folder and two example .py

Author: ladyada

Diff for: examples/read_register_i2c.py

@@ -0,0 +1,17 @@
+import busio
+import board
+from adafruit_bus_device.i2c_device import I2CDevice
+
+DEVICE_ADDRESS = 0x68 # device address of DS3231 board
+A_DEVICE_REGISTER = 0x0E # device id register on the DS3231 board
+
+# The follow is for I2C communications
+comm_port = busio.I2C(board.SCL, board.SDA)
+device = I2CDevice(comm_port, DEVICE_ADDRESS)
+
+with device as bus_device:
+    bus_device.write(bytes([A_DEVICE_REGISTER]))
+    result = bytearray(1)
+    bus_device.readinto(result)
+
+print(''.join('{:02x}'.format(x) for x in result))

Diff for: examples/read_register_spi.py

@@ -0,0 +1,20 @@
+import busio
+import board
+import digitalio
+from adafruit_bus_device.spi_device import SPIDevice
+
+DEVICE_ADDRESS = 0x68 # device address of BMP280 board
+A_DEVICE_REGISTER = 0xD0 # device id register on the BMP280 board
+
+# The follow is for SPI communications
+cs = digitalio.DigitalInOut(board.A2)
+comm_port = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
+device = SPIDevice(comm_port, cs)
+
+#pylint: disable-msg=no-member
+with device as bus_device:
+    bus_device.write(bytes([A_DEVICE_REGISTER]))
+    result = bytearray(1)
+    bus_device.readinto(result)
+
+print(''.join('{:02x}'.format(x) for x in result))