Reseting the STLM75 Temperature sensor

daneichenwald1 · ‎2009-04-17

Posted on April 17, 2009 at 15:23

daneichenwald1 · ‎2011-05-17

Posted on May 17, 2011 at 13:10

I have my I2C drivers working as I can read and write to I2C devices. I'm working with the STLM75 Temperature sensor on the eval board. However, I noticed that if an I2C transfer gets interrupted, I can no longer talk to that device. The simplest case is:

1. Generate a START

2. Reset the processor

3. Generate a START

4. Write Addr -> Always generates Acknowledge Failure Error

5. Reset the processor

6. Works fine

I've tried generating various combinations of START/STOPs on every reset, but I can't seem to reset the temp sensor. (if that is even the problem) My code is basically taken directly from STM eval example.

Thanks in advance!

Dan

nanayakkaraan · ‎2011-05-17

Posted on May 17, 2011 at 13:10

Hello Dan,

I am also facing the same problem you did, in I2C communication with STLM75 temperature sensor.

''Write Addr -> Always generates Acknowledge Failure Error ''

I have been receiving this error and trying to figure out how to overcome it.

Have you found any solutions?

Any advice on this matter is appreciated.

Thank you.