Hi Toley,
To my best knowledge I had already 'translated' the INA219 library of Adafruit. Today, I went to the very basic. After power up, the contents of the Configuration Register should be 0x399F, at least according to the documentation. But, when I read the Configuration Register after power up and before doing something else, it reads 0x3939. Now I am waiting for a second device, that I need anyhow, to check if it is a device failure or a programming error.
Harrry