MEMS (sensors)

Hi everyone, I've had many many issues with the board and now it looks like it's broken. I can't turn it on, but let's start from the beginning.I've got the STEVAL-MKSBOX1V1 (SensorTile.box) with a blue plastic cover.Now, I've tested some simple functionalities from the Entry and Expert level (using ST BLE Sensor Android App) and there are already a few issues I hope I'll get some help with:Power button doesn't always work. Turning off or on - Sometimes I have to reconnect it to the battery so it resets.Logging very often automatically stops after a short period of time - I think it happens when the .csv file weight reaches 749kB, but I'm not 100% sure. I just noticed that when that happens, one of the files (and it's always that weights the most) is 749kB.Log files that you can delete or export using the app are not stored in SD card - where are they stored exactly?Log files are sometimes not created at all, like I didn't even start logging.Output to SD card Buffer 10000 setting makes

Привіт! У мене проблема з отриманням даних із датчика LSM6DS3. Коли я намагаюся прочитати значення реєстру "WHO_AM_I", я отримую надто короткі імпульси у відповідь, які не можуть бути прочитані поданими до його тактового сигналу.Я використовую цю плату з сенсором. SPI. Головним є STM32F411.3v3 -> 3,3 ВGND -> GNDSA0 -> PA6 -> SPI1_MISOCS -> PA4 -> GPIOA4 SDA -> PA7 ->  SPI1_MOSISCL -> PA5 ->  SPI1_SCKУ випадку, коли я надсилаю значення 0x8F, я отримую результат, як показано нижче. У той же час я повинен отримати значення 0x69 або 01101001 у двійковому вигляді. І якщо ви важливо подивіться на результати нижче, ви побачите, ніби щось заважає, імпульс занадто короткі, щоб їх можна було записати.Я намагався прочитати значення в інших реєстрах "CTRL9_XL" і там така ситуація. Я повинен отримати 00111000, але я отримав 00110000, ніби імпульси не були стиснуті та записані на одне значення менше:Налаштування SPI:void SpiConfig(void){ RCC->APB2ENR |

I'm working with a nucleo 401RE and a x-nucleo ISK 01A3 as hardware and algobuilder and unicleo-GUI as software. If I measure, for example, the rotation vector 9X throughout the day and save the output datalog using Unicleo-GUI, the timestamp shows that every hour and a quarter taking values, there is no data until hour and a half later, also the last timestamp shows that around 48h of data, so there is no data loss, just some weird cyclic jump error on the timestamp.This error doesnt show up on Unicleo-GUI's user messages, just on the .csv timestamp generated.How can i overcome this issue?Any help is appreciated, thanks

HiI am trying to configure the accelerometer sensor to read the data polling  as the example suggested in githubWhen I try to read /* Read output only if new value is available */lis2dw12_flag_data_ready_get(&dev_ctx, &reg);At initial the drdy will be high after that I am reading the lis2dw12_acceleration_raw_get(&dev_ctx, data_raw_acceleration);  once reading this register the drdy value must be 0 but it is high and its reading this continuously.is there any register I have to check and we have placed this sensor with different MCU and I am new to STM community.Thanks,

Hi Everybody, I am a beginner and I need some information to start using the following devices:- Nucleo-F401RE- X-Nucleo-Amicam1- Steval-mic007v1. I have currently downloaded the following material:- X-cube-memsmic1- Link007- Link009- Stm32cubeid.Is it necessary to install additional software tools and/or embedded software? Is it possible to get an initialization procedure or a video guide for the correct configuration of the devices for the use of the Steval-mic007v1 microphones? Thanks for your help. Best wishes, Oscar 

 I now want to use the spi port of the stm32F407 series to collect data from the PDM microphone of mp34dt05. My SPI is set to the main device to only receive. There are SCK and MISO ports. The SCK clock is 2.25Mhz. MISO receives data, but I found that I collected The pdm data flow basically caused no changes based on my environment changes. I felt like I had no real purpose. Can you tell me in detail the correct driver for the mp34dt05 microphone chip on spi? Is there a driver file for the mp34dt05 microphone chip? If so, can you send it to me? Thank you for your attention.

Hi,I'm attempting to use an LSM303agr magnetometer and calibrate it using the MotionMC library.My issue is that the MotionMC MMC_Output_t struct always remains at its default value.I've tried different hardware setups:STM32F746VG and a custom boardNUCLEO-F401Re with a STEVAL-MK117V1I followed the application note UM2192Here are the steps I've taken: https://www.st.com/content/ccc/resource/technical/document/user_manual/group0/dc/4f/b0/4d/e3/41/4f/4b/DM00382798/files/DM00382798.pdf/jcr:content/translations/en.DM00382798.pdf 1-Enabled CRC in Cube MX. 2-Configured MotionMC in the software Pack and enabled it in the Middleware panel of Cube MX. 3-Configured the I2C to communicate with the LSM303agr. 4-At the beginning of the main code, I set up the magnetometer like this:     /* @brief configure the contol register of the magnetometer @param lsm303agr : pointer to the struct associate to the device to read @retval status of the execution

I used in the past lis2mdl. I need to reproduce the former product. I ordered the same parts but I faced an issue with the magnetometer. The part number is the same but i got different power consumption. I got an image with the different magnetometers (old and new with same product number ) and i found out that they have different markings. Are there any different versions of lis2mdl with different power consumption?

Hello, currently I am using LSM6DSR for developing my apps.I have tested this sensor for Wake Up detection with 218.75 mg threshold and Activity detection with 15.625 mg threshold without any issues.Is it possible to enable both of these detection at the same time (say Wake Up detection as interrupt 1 and Activity detection as interrupt 2)? I doubt it is possible since both of these are using the same WAKE_UP_THS register.

Hi,We are using an LSM6DSOX IMU and Micron MT29F2G01ABBGDWB Nand Flash on a common SPI bus. We didn't see any issue until we upgraded the LSM6DSOX with an LSM6DSO32. The datasheet suggests that they are drop-in replaceable. Both the flash chip and IMU share a common power supply. The issue is that once we turn the power off, either on a Flash-at-capacity event or to conserve power, the data on the Flash chip gets corrupted. This is somewhat bizarre as it is only happening with the LSM6DSO32 sensor, and not on LSM6DSOX.Has anyone seen anything like that? Are there operational differences between the two sensors that we are missing? Any advice on troubleshooting this will also be appreciated. The schematic for IMU and Flash is attached.Thanks

GreetingsI have been using the LIS2DW12 accelerometer for some time now, and have tried to set up the self-test functionality. Ironically, I've set it up according to the AN5038 app note pg.46 and it has never failed the self test. I am also analysing the averages obtained before and after the self test, and the calculated differences are always within the range specified in the datasheet. I believe I can expect it to fail if I move the sensor during the period I expect the self-test to be running. I've tried this to no avail, where the self-test will still pass. The criteria and simulation for a failure is important as it will directly determine if my device using the IC, is ready to be used. Please may I be advised on any other methods to get the self-test to fail, or if it is plausible that I impose a tighter range on the min and max values that the calculated difference should fall in between.Any help would be appreciated. @Federica Bossi 

Hi.I'm having difficulties understanding how to configure the LIS2DE12. Especially the filter part is obscure to me.I want the accelerometer to generate an interrupt when the device changes from being still to moving or the opposite.The power consumption should be as low as possible, so an ODR of 1hz has been chosen, and also smaller movement should be filtered out. That means the device should have been moving for at least 5 minutes after having being still or vice versa before generating an interrupt.I hope someone is able to help.Thanks.

Hello.I am a graduate student who is conducting research using IIS2MDC and Arduino, a digital magnetic sensor of STMicroelectronics.I am currently using IIS2MDC and Arduino Uno to measure the magnetic fields in the form of sine waves generated from the coil.First of all, the measurement environment is composed as shown in the picture below. The code used the stm32duino/IIS2MDC/IIS2MDC_DataLog_Terminal.ino code listed on Github. I am proceeding with the measurement by modifying the Baud rate and Delay time.The picture below shows the magnetic field measurements of the coil for AC 20 Hz current at Baud rate (2000000), Delay time(0). The questions I would like to ask are as follows.1. I need to connect the cs pin to the Arduino Digital 0 pin for data to come in, what is the meaning of this connection? Also, I'm using the drdy pin without connecting it, and I'm curious about the meaning of these two pins. 2. When I set the sensor ODR to 100Hz and looked at the magnetic field

Hi Team,I want to evaluate LSM6DSO16IS, I found one expansion board X-NUCLEO-IKS4A1 already mount this sensor and have corresponding software and projects accordingly, additionally in projects could use NUCLEO-F401RE board to communicate, but seems in projects by default use LSM6DSV16X to get acc and gyro data rather than LSM6DSO16IS, is my understand correct? Should I just change the macro definition to initialize LSM6DSO16IS, can the project directly take to use or others need to change, like loading ISPU related underlying driver. Thanks a lot! 

Hey ,i have been trying to link ISM330DHCX sensor to external sensors.Problem :working with STEVAL-STWINKT1B board and the schematics for my sensor ISM330DHCX clearly cannot be configured to be connected to external sensors , even though it is allowed to link up to four sensors as slaves .in my case ( with the KT1B board) ISM330DHCX (the I²C master) sensor communicate with the processor via SPI ( 4-wire) and should be commmunicating with its slaves (in here im working with one and only slave ; IIS2MDC : magnetometer) Via I2C ( sensor hub mode 2 is enabled ) ,in my case : i get no data even though i made sure to configure I2C and Configure Sensor Hub to read IIS2MDC , followed every step of AN5398 (7 Mode 2 - sensor hub mode.), Prepared sensor hub to read data from external Slave0 continuously, Enabled accelerometer to trigger Sensor Hub operation and Enabled I2C Master ; RQ :  All external sensors have to be connected in parallel to the SDx/SCx p

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We are using ST IMU LSM6DSL in to our chipset/PCB.We are looking for ready to use software or algorithm to implement in to our firmware to determine the speed/acceleration & distance from IMU data.Is there any example code available for share?

Hello all,   I'm looking at the datasheet for the STW56N60DM2, and it's really not clear if the back of the FET is electrically isolated from the Gate, Source, and Drain. Typically, this is more clear in other datasheets I've looked at. Below is the only "hint" I can find that the part is isolated. The image below is from a different manufacturer, and they make it much easier to determine. 

We got Sensor tile box and they were working fine until we uploaded this:https://www.st.com/en/embedded-software/stsw-mksbox1-bl.html/1000vai bluetooth. Now they are not visible on the app ST ble sensor. How to update the original firmware on the sensor tile box (nnot pro) to make them work?

I struggle to use PDM Filter library.This is the message error I get : What I have done so far are : - in project properties, C/C++ general, Paths and syombols, in "Includes" I added the path to pdm2pcm_glo.h ; in "Library Paths" I added the path to a folder with all the libPDM_FIlter_CM3_GCC_wc16.A ... files.- Wrote #include "pdm2pcm_glo.h" in the main.It's still not working :\In "Paths and Symbols", in libraries, I think I can add a library but I don't know which one to use (all the files were included in mems1 folder). I tried randomly picking but I had another error message;I am new to cubeIDE so it's very possible Im doing a beginner mistake here

Hello,We have been using the LSM9DS1 in our own design with Linux kernel 4.19.x by adding drivers from ST github, and using the iio_generic_buffer tool to read values.Now we are upgrading to linux kernel 6.1.46 and I have checked that the drivers are included in the "drivers/iio/imu/st_lsm6dsx/" directory. I am trying to use the same tool to retrieve values and I get this error:iio_generic_buffer -n lsm9ds1-imu_accel -A -g -c 5iio device number being used is 2trigger-less mode selectedEnabling all channelsEnabling: in_accel_y_enEnabling: in_accel_x_enEnabling: in_timestamp_enEnabling: in_accel_z_enFailed to enable buffer '/sys/bus/iio/devices/iio:device2/buffer0': Unknown error 524Disabling: in_accel_y_enDisabling: in_accel_x_enDisabling: in_timestamp_enDisabling: in_accel_z_enThis error means ENOTSUPP (Operation is not supported) and I have checked in "drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c" that the fifo_ops feature is not included for the LSM9DS1 ID.I would like to know if you

hiwere would i find a recent webinar on how to use X-CUBE-MEMS1? I am interested in Lsm6DSL.Thx

In the project I use Attiny13a) + LIS2DH SPI interface. One leg of the microcontroller is missing. Is it possible in SPI mode to connect the CS pin directly to GND, and not to the microcontroller port.In I2C mode there are enough pins, everything works fine, but the current consumption is too high. 

HiI am updating a PCB comprised of LSM6DSL, LSM303AGR and STM32F4 for a customer. I wonder if these 2 sensors are still the latest and greatest? Or should I better switch to some thing newer?Thx 

Hello there,What is the resonance frequency of the LSM6DSO32 accelerometer and gyroscope?It is not available in the datasheet. I tried to open a customer support tickets but they just forwarded me to this forum.