BMA400 FIFO Reading and Using Auto Low Power Feature

[fatihozen]

Hi,

I read BMA400's FIFO. I set ODR to 50 Hz so FIFO fulls in approximately 5.06 seconds. MEMS is in normal mode and I want it consumes less power. Is it possible to use Auto LowPower and Auto Wakeup features while reading datas from FIFO ? If yes how ? I gave it a try.

I set 0x2C register to 0x7D(5 seconds) and

0x2D register is 0x06(enabled wakeup interrupt and timer trigger).

I set 0x2A register to 400(1 second) and

0x2B register is 0x04(lowpower timeout active).

I see that FIFO full flag does not be fired in 5 seconds. It takes longer(more than 10 seconds). How should I configure these registers ?

[BSTRobin]

Hello fatihozen,

You could refer the two link for your question.

Introduction about BMA400 Auto Wakeup and Auto Low Power
https://community.bosch-sensortec.com/t5/Knowledge-base/Introduction-about-BMA400-Auto-Wakeup-and-Au...

How to use BMA400 FIFO
https://community.bosch-sensortec.com/t5/MEMS-sensors-forum/BMA400-FIFO-Low-Power-Issue/m-p/24886