How to start with SMbus and F2 or F1?

LMI2 · ‎2015-11-20

Posted on November 20, 2015 at 15:53

I have a sensor which uses SMbus. How many unexpected features it has, or does it work with STM32F2 directly? What about addresses and shifting them.

So far, I2C bus has not worked.

Nickname5522_O · ‎2015-11-23

Posted on November 23, 2015 at 13:16

Hi mich.lei,

You can use SMBus for STM32F1 and STM32F2 families. For limitations you can refer to Errata Sheets, for instance

http://www.st.com/st-web-ui/static/active/en/resource/technical/document/errata_sheet/DM00027213.pdf

(for STM32F205VC). It indicates that:

''The I2C peripheral is not fully compliant with the SMBus v2.0 standard since It does not support the capability to NACK an invalid byte/command''.

-Shahrzad-

LMI2 · ‎2015-11-25

Posted on November 25, 2015 at 20:30

I see.

I do not know now what is wrong but the sensor is quiet. No response. I use the memory read command.

Regards