Testing MCP41010

[Frederico Alves de Oliveira Silva]

Hello,

I am trying to test a digipot MCP41010 on a BeagleBone Black and I can't make it work.

I made the connections between BeagleBone and the digipot MCP41010 as below:

PORT |	CS0 |	DO |	DI |	SCLK
SPI0   |	P9_17 |	P9_21 |	P9_18 |	P9_22

I used the code below , from this page: https://adafruit-beaglebone-io-python.readthedocs.io/en/latest/SPI.html, to test the output of the BeagleBone:

import Adafruit_BBIO.SPI as SPI

from Adafruit_BBIO.SPI import SPI
# spi = SPI(bus, device) #/dev/spidev<bus>.<device>

# /dev/spidev0.0
spi = SPI(0, 0)
print(spi.xfer2([32, 11, 110, 22, 220]))
spi.close()

The output should be: 32, 11, 110, 22, 220; but, it is: 255, 255, 255, 255, 255.

Can anybody help me, please?
Thanks for the attention