louarnold:
But the module is still not working. I just need to look at it to describe the problem.
For the life of me, I can't download the PDF in the original post. I get error 503 from the web site when I click it. Could you post a link to this device?
How often will communications be required? I heard a story once about an I2C device that was overloaded by too-frequent bus communication and it affected its internal operation as a result.
Is 0x2E the write address? Then 0x2F would typically be the read address. The read/write bit is the least significant bit with zero indicating write and one for read. Shifting the address by one bit ( >>1) seems unusual, but without knowing anything about the device or seeing the datasheet, I can't be certain.