Explanation of I2C Write

[tay10r]

I'm curious about this line:

SparkFun_KX13X_Arduino_Library/src/SparkFun_Qwiic_KX13X.cpp

Line 127 in c4a4b91

retVal = writeRegisterByte(0x7F, 0);

As far as I can tell from the manual, there isn't a register mapped at this address and the software reset is done by setting a bit in the CNTL 2 register (which happens shortly after this line). What is this line of code doing?

[edspark]

@PaulZC Can you give some insight here - looks like you added it a while back. I can confirm what @tay10r mentions, that there isn't anything in the datasheet regarding that particular value.

[PaulZC]

There are notes referring to the Kionix TN027 "Power On Procedure" 20 lines earlier. I'll investigate tomorrow...

[PaulZC]

More detail on page 4 here:

https://fscdn.rohm.com/kionix/en/document/TN027-Power-On-Procedure.pdf

@tay10r : please close this issue if this answers your question.

Best wishes,
Paul

[tay10r]

As you mentioned, it's all explained on page 4. Thanks for sharing and for the quick response!