Get the acceleration data of a LightBlue Bean using Python

read_accel.py

from __future__ import print_function
from bluetooth.ble import GATTRequester
from time import sleep

def get_accel(data):
    """
    Get the acceleration values from the data
    TODO: Add CRC check
    See: http://legacy.punchthrough.com/bean/the-arduino-reference/accelerationreading/
    """
    if (hex(ord(data[6])) == "0x20") and (hex(ord(data[7])) == "0x90"):
        x = ord(data[9])*256+ord(data[8])
        y = ord(data[11])*256+ord(data[10])
        z = ord(data[13])*256+ord(data[12])
        sensitivity = ord(data[14])
        x_accel = x * sensitivity *1000 / 511
        y_accel = y * sensitivity *1000 / 511
        z_accel = z * sensitivity *1000 / 511
        print("0 {} {} {} {}".format(x_accel, y_accel, z_accel, sensitivity))
    else:
        print("1")

class Requester(GATTRequester):
    def on_notification(self, handle, data):
        #print("- notification on handle: {}".format(hex(handle)))
        #print("Data: {}".format("0x"+"".join([hex(ord(d))[2:].zfill(2) for d in data])))
        get_accel(data)

try:
    req = Requester("C4:BE:84:E5:76:ED", False)
    req.connect(True)
    req.write_by_handle(0x002f, str(bytearray([0x01, 0x00])))
    req.write_by_handle(0x002e, str(bytearray([0x80, 0x02, 0x00, 0x20,
                                            0x10, 0x7d, 0x7f, 0x00,
                                            0x00, 0x00, 0x00, 0x00,
                                            0x00, 0x00, 0x00, 0x00,
                                            0x00, 0x00, 0x00, 0x00])))
    sleep(1)
    req.disconnect()
except RuntimeError:
    print("2")