nRF52832 with BMX055

[Vo Huu]

Hello everyone!

I'm using this board: https://item.taobao.com/item.htm?spm=a230r.1.14.16.f3db6e4e1De39A&id=560311112293&ns=1&abbucket=7#detail

It's configured 4-wire SPI follow this table 

I can't read data out of BMX055. Can everyone help me!. I using SDK 11, Softdevice s132_nrf52_2.0.0. 

[tom-fleet]

Hi All,

I just received a few of these modules, and can report that the table above is incorrect.

Pin 7 (PS) of the BMX055 is tied to *ground*, which means the device expects to operate in I2C mode, and should be addressed as such.

I have data streaming from the board, with code based on one of the several BMX055 examples on github.

BR,

Tom

[Dariusz]

Hi tom-fleet

Which pins of nrf are used for I2C?

[tom-fleet]

Hi Dariusz,

Pretty much every peripheral I/O (with the exception of the NFC and analog peripheral I/O) can be routed to any of the available pins on the package. 

See here for details;

https://devzone.nordicsemi.com/f/nordic-q-a/14055/nrf52-pinout-or-dedicated-pins?ReplyFilter=Answers&ReplySortBy=Answers&ReplySortOrder=Descending

It has been some time since I used the modules, so I do not have the specific configuration to hand for that module I am afraid. 

If you are referring to this specifc module, let me know, and I'll dig out my target board and try get some mappings for you!

[pure-gold]

Tom,
I have few of these modules, how do you access them?
What is the I2C configuration?
I've looked at the board and it looks like it connect to pins 6 & 11, but twi scanner can't find it.

[tom-fleet]

It's been a little while since I've had these modules on my desk!

I'll see what I can turn up for you.

[pure-gold]

Thanks, it will be helpful :)