pici2cserial-communicationsmbus

SMBus Address and BaudRate


I need to communicate with some batteries ( BT-70791CK from BrenTronics). They use SMBus ver 1.1 for communication, but in datasheet of the batteries there is no information about the SMBus address they have or the baudrate. I asked them and they told me that this is the only document that they have. So I started to think that maybe I do not need to know SMBus addresses or baudrate for SMBus communication. My questions are

  1. Can I still communicate with devices that use SMBus ver 1.1. without knowing their addresses or baudrates?

  2. Is there any specific baudrate or SMBus address for batteries or for SMBus ver1.1?


Solution

  • In Case you or others are looking for these answers I will post a few links and a short description regarding the Smart Battery Data Specification v1.1 and System Management Bus (SMBus) v1.1.

    If any link is broken or for some reason the specification sheets is taken down from the "WWW". Tag me in the post, I do have the PDF-files stored offline.

    If you need to find addresses on I2C, the RaspberryPI 3b+ has I2C GPIO. As long as you have the correct pull-up resistance, you can do like I have, and find the battery address using RPI.

    Another thread on RaspberryPI + i2cDetect("AddressFinder") -> Here