How to activate Sensor Hub mode in LSM6DSL

[Jose Navarro]

Posted on August 23, 2017 at 16:50

Hi!, 

I'm trying to do bring-up of a board that has the LSM6DSL and other sensors in its sensor hub. 

I can read and write to other registers except for 

CTRL10_C (19h) and MASTER_CONFIG (1Ah) which I can only read and they are in its default values. 

I want to write to above registers to activate he sensor hub functionality. 

Both sensors in LSM6DSL are in its default power-down status when I try to write to the mentioned registers. 

Could I be missing something else to be able to write to the registers? 

Thanks!

[Petr S]

Posted on August 24, 2017 at 10:32

Hello Jose,

The only thing that comes to my mind is to make sure you disabled access to embedded functions registers by resetting FUNC_CFG_EN bit in FUNC_CFG_ACCESS register (addr. 0x01). You can use the LSM6DSL_SensorHub sample application in

http://www.st.com/content/st_com/en/products/embedded-software/mcus-embedded-software/stm32-embedded-software/stm32cube-expansion-software/x-cube-mems-xt1.html

 package (inside Projects\Multi\Examples\IKS01A2 subdirectory) and of course the

http://www.st.com/resource/en/application_note/dm00402563.pdf

 as your references.

I hope it will help.

Petr

[Jose Navarro]

Posted on August 24, 2017 at 16:54

Hi Petr,

Thanks a lot for your support!

-Jose

[Jose Navarro]

Posted on August 25, 2017 at 00:05

I think I know now that the mistake is on my side.  

I was using binary to write data instead of hex.   

Let me try again an report back.