Unable to write to MPU6050 Register 0x1C

[pmulvey]

I am trying to change the range on the accelerometer. This is done by setting bits in 0x1C. I modified the class accel() and added this piece of code. I had the register lines in the __init__ part initially and just moved it here for further debugging. The print statement always returns zero.

Code: Select all

    def get_AcX(self):
        ar = 0x18
        self.iic.writeto_mem(self.addr, 0x1C, bytearray(ar))
        print(self.iic.readfrom_mem(self.addr, 0x1C, 1))
        print ("--------------")
        raw_ints = self.get_raw_values()    
        return self.bytes_toint(raw_ints[0], raw_ints[1])

[Roberthh]

bytearray(0x1c) creates a bytearray of 28 zero bytes.
You could write for instance:
ar=b'\x1c'
self.iic.writeto_mem(self.addr, 0x1C, bytearray(ar))

[pmulvey]

Robert,

That works. I'm relatively new to micropython and am inclined to do too much copy and paste rather than being systematic about learning all aspects of the language. This is a good example of that. Thank you for your guidance.