MEMS (sensors)

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How to import stm32 PCM data into my computer

I'm trying to convert a PDM data stream from a MEMS microphone into PCM. I think I managed to get a code working and now I want to verify that the acquisition is good. In my test code, I store all the PCM data into "uint16_t pcm_data[30000];"While in...

EEnco.1 by Associate III
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IIS3DWBTR Filter LPF2 frecuency response

Hello Community,We have been using the IIS3DWBTR sensor for some time and have observed some odd behavior regarding filters. We recently performed some experimental tests on the LPF2 Filter to corroborate the frequency response curves on page 20 of t...

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MSierraA by Associate II
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Resolved! Question about SAI configuration with a MEMS microphone

I want to connect a MEMS microphone to my stm32 using its SAI interface. I found a document called "Interfacing PDM digital microphones using STM32 MCUs and MPUs" which gives some examples about how to do it.My question is about the configuration :Wh...

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EEnco.1 by Associate III
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Resolved! Unable to convert PDM data to PCM data using pdm2pcm

I'm using a stm32wb55RG. I'm trying to get data from a MEMS PDM microphone and convert it into PCM data. I'm using SAI PDM interface and DMA. So far, I think I manage to receive the PDM data (I get some values from the SAI interface) :I don't know if...

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EEnco.1 by Associate III
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MZhan.6 by Associate
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1. Does the MotionDI library output the gravitational acceleration along with linear acceleration as I am getting it in the lin acc. data? 2. How to wipe out the effect of gravitational acceleration in linear acceleration? Sensortile kit is used.

Sensortile kit is used and linear acceleration is fused output from gyroscope and accelerometer,the sensor is kept with z-axis of accelerometer being parallel to gravity (screenshot attached).

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MAhm.1 by Associate
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