NotImplementedError: Currently can only write a single byte in writeto_then_readfrom

[tampe125]

I'm trying to read the distance using the VL6180X sensor on my Raspberry Pi.
Everything worked fine, but then I installed again the library and I'm getting the following error:

Traceback (most recent call last):
  File "distance.py", line 11, in <module>
    sensor = adafruit_vl6180x.VL6180X(i2c)
  File "/usr/local/lib/python3.7/dist-packages/adafruit_vl6180x.py", line 109, in __init__
    if self._read_8(_VL6180X_REG_IDENTIFICATION_MODEL_ID) != 0xB4:
  File "/usr/local/lib/python3.7/dist-packages/adafruit_vl6180x.py", line 284, in _read_8
    i2c.write_then_readinto(bytes([(address >> 8) & 0xFF, address & 0xFF]), result)
  File "/usr/local/lib/python3.7/dist-packages/adafruit_bus_device/i2c_device.py", line 150, in write_then_readinto
    in_start=in_start, in_end=in_end)
  File "/usr/local/lib/python3.7/dist-packages/busio.py", line 70, in writeto_then_readfrom
    in_start=in_start, in_end=in_end, stop=stop)
  File "/usr/local/lib/python3.7/dist-packages/adafruit_blinka/microcontroller/generic_linux/i2c.py", line 62, in writeto_then_readfrom
    raise NotImplementedError("Currently can only write a single byte in writeto_then_readfrom")
NotImplementedError: Currently can only write a single byte in writeto_then_readfrom

After further inspection, it seems that the culprit is the commit 74a7a7f . If I revert it everything works fine.
I can't grasp the whole picture since it's way over my head, but those changes are definitively related to the issue.

[caternuson]

Looks like repeated starts aren't needed for this sensor:

so could probably switch to a write + readinto combo.

[ladyada]

yah please try it!

[tampe125]

Hello @caternuson @ladyada , any news on this?

[ladyada]

did you try the PR?
#8

[caternuson]

@tampe125 Please try the 1.1.4 version of the library when it becomes available.

[caternuson]

closing. version 1.1.4 should fix this. can reopen if needed.

[tampe125]

Sorry for the late reply. I can confirm that the latest version of the library works correctly.
Thank you for the help.