Skip to content

NotImplementedError: Currently can only write a single byte in writeto_then_readfrom #7

Closed
@tampe125

Description

@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.

Metadata

Metadata

Assignees

No one assigned

    Labels

    No labels
    No labels

    Type

    No type

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions