Merge pull request #25 from kattni/plotter-code

Adding plotter code.

Author: ladyada

examples/ble_bluefruit_connect_plotter.py

@@ -0,0 +1,28 @@
+# CircuitPython Bluefruit LE Connect Plotter Example
+
+import board
+import analogio
+import adafruit_thermistor
+from adafruit_ble.uart_server import UARTServer
+
+uart_server = UARTServer()
+
+thermistor = adafruit_thermistor.Thermistor(board.TEMPERATURE, 10000, 10000, 25, 3950)
+light = analogio.AnalogIn(board.LIGHT)
+
+
+def scale(value):
+    """Scale the light sensor values from 0-65535 (AnalogIn range)
+    to 0-50 (arbitrarily chosen to plot well with temperature)"""
+    return value / 65535 * 50
+
+
+while True:
+    # Advertise when not connected.
+    uart_server.start_advertising()
+    while not uart_server.connected:
+        pass
+
+    while uart_server.connected:
+        print(scale(light.value), thermistor.temperature)
+        uart_server.write('{},{}\n'.format(scale(light.value), thermistor.temperature))