About APaan.1

APaan.1 · 2021-04-27

Hi,We have STMicroelectonics LIS2DW12 accelerometer on our custom board which has nRF9160 SiP from Nordic Semiconductor and we are using the nRF Connect SDK which runs on Zephyr OS. Here are the LIS2DW12 driver codes of the nRF Connect SDK / Zephyr: ...

APaan.1 · 2021-05-03

Hi,"may I ask you to try to set to 1 bit CS_PU_DISC in CTRL2 (21h) and check if power consumption changes?"We tried changing it and saw no change in power consumptionWe cut VDD-trace to LIS2DW12 on our board and attached the ammeter directly to it an...

APaan.1 · 2021-04-30

Hi,We confirmed that the I2C lines are set high as default and setting them to high didn't affect the consumption. We also tried completely disabling TWIM/I2C on the nRF9160 which had no impact on the consumption either. We measured the voltage on I2...

APaan.1 · 2021-04-29

Hi,"how much is current consumption when the sensor is off (ODR bits of register CTRL_1 = 0000) and you try to set some registers?"This is how we set the data rate / ODR for LIS2DW12 and read the register CTRL1 and it set it correctly to 0000 0000. i...

APaan.1 · 2021-04-28

We tried changing the internal pull-ups of the GPIOs on nRF9160. Here you can see the results of the changes:

APaan.1 · 2021-04-28

Hi and thanks for replying so fast,"the schematic seems ok to me, except for the 10 uF capacitor between Vdd and GND that you do not have (but it should not give a problem like this)."What should we achieve by adding this capacitor?"can you try to pi...

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LIS2DW12 high current consumption

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