I2C in Raspbery Pi 3 using smbus

Question

I'm trying to interface my accelerometer ADXL3458 to my Raspberry Pi 3 running in ubuntu mate. I have install all the necessary package require for the I2C communication. When I perform this command i2cdetect -y 1 I get this results.

Now I run this Python code

#!/usr/bin/env python

import smbus
import time
import math
from math import sin, cos, pi

bus = smbus.SMBus(1)

print bus

ACC_ADRESS = 0x53

acc_x = 0.0
acc_y = 0.0
acc_z = 0.0


def writeACC (register, value):
    bus.write_byte_data(ACC_ADRESS, register, value)
    return -1

def readACC_byte ( addr):
    return bus.read_byte_data(ACC_ADRESS, addr)


def readACC_word (addr):
    LSB = bus.read_byte_data(ACC_ADRESS, addr)
    MSB = bus.read_byte_data(ACC_ADRESS, addr + 1)

    val = (MSB << 8) | LSB
    return val


def setupACC ():
    # Sleep mode
    writeACC(0x2D, 0)
    # Mesurement mode
    writeACC(0x2D, 8)
    # enable Autu sleep mode
    writeACC(0x2D, 16)

    while True:
        time.sleep(0.1)
        acc_x = readACC_word(0x32)
        acc_y = readACC_word(0x34)
        acc_z = readACC_word(0x36)

        print "Acc_x :\n", acc_x
        print "Acc_y :\n", acc_y
        print "Acc_z :\n", acc_z

        time.sleep(0.5)


if __name__ == '__main__':
    setupACC()

And I get this result in the oscilloscope

This infer that my I2C communication is successful. But in the result that I'm printing shows no value in it

Can please help with problem that I'm facing. Is it anything that I'm doing wrong?

thank you

Answer 1

Auto sleep mode was should not active. Upon commenting #writeACC(0x2D, 16) is working fine.