smbus | smbus provides access to the System Management bus over I2C | Web Framework library

I need to change value in MLX96014 temperature sensors eeprom with raspberry pi and python. I can read its ram and eeprom without problems, but I cant write to it. Also every python MLX96014 library that I find dont have this function implemented for some reason. I tried to do this with arduino and it works great with this function:

I've got a problem with PEC on STM32 SMBUS, which i use to read data from a MLX90614 IR thermometer. When i start the device, either the PECERR flag is set and continues to be set, for all transmissions, even though the data from the IR thermometer seems to be correct. Or the PECERR is never set and all the data from the IR thermometer is still correct.

When i study the data on my oscilloscope i can see no difference between the signals when the PECERR is set or not. As stated earlier data seems to be good either way.

I could of course just ignore the PECERR flag, but i'd lige to be able to filter out any eventual garbled transmissions. Anyone have an idea what i am doing wrong here?

I want to create an UML from a little Program i wrote. So far i only made UML Diagrams for Java Program and its quite new for me to draw one for python. The thing is, that there is a Writer - "Interface" e.g. a class that inherits from abc.ABCMeta and implements the abstract method write(). This interface is implemented in two classes. A Database class and a CSVWriter Class. The constuctor e.g. the init() method of another class called DataCollector, takes a Class that had implemented the Writer Interface as an argument. The instance CSVWriter or Database will then be stored as an instance variable inside a DataCollector object.

How do i show this relationship within a UML? Python does not really have interfaces. To me it seems that it just inherits from the "interface". I tried a UML and i aggregated the DataCollector with the WriterInterface. Is it ok to use an aggregation between an interface and a class or do i have to draw aggregations between the Classes that implement the interface and the Class DataCollector?

This is how i draw it so far:

The code the UML is based on:

As I'm rather new to Cmake usage, I don't really know how to solve this problem. In my C++ code, I use functions from the Linux i2c library, as follows:

I'm trying to read a block of data from an imu (mpu9250) but when building with g++ mpu.cpp -o mpu i get the following error:

I am using the Sensirion SFM3300 flow sensor and can read the correct values with the Arduino with the following code (I2C):

My python package depends on a c extension that, in turn, makes use of numpy's arrayobject.h. I built the image without the package and confirmed that this file exists: /usr/lib/python3.5/site-packages/numpy/core/include. I also patched distutil's setup.py as follows:

I have a Raspberry Pi Zero W acting as a Master in communication with an Arduino Pro Mini acting as a Slave. I would like for the Master to send commands to the Slave. However, when I try using commands such as bus.write_byte_data or bus.write_byte from the Master, the Slave only ever seems to receive the value 255. Here's the code:

Master (in Python):

I have 2 VL6180X Distance Sensors properly connected to a TCA9548A Multiplexer, however it only recognizes the Multiplexer itself and not the 2 sensors as you can see with the 0x70. Is there any way to configure the i2c adresses?