MEMS (sensors)

Hello,I will have to set up an electronic design with 2 VL6180X on the same I2C bus.ST provide an interesting document about changing addresses while using RESET lines of this component.I will probably not be able to use this technique due to the geometric configuration (VL6180X on a distant PCB with I2C converted to differential pair).I can use only one line to pilot the RESET pins. I plan to add a switch with an NPN logic inverter on each distant board which allow to chose if the board must be considered active HIGH or active LOW on this MCU RESET line.Each time I need a measurement, I will interact with the first one, second one being deaf, then switch the RESET line to interact with the second one, first one being deaf.Does it seem possible?Thank you.

Hello!Our application uses accelerometer in three modes:power downmotion detectiontilt angle monitoringHere is power down mode configuration:lis2dw12_data_rate_set(&handle.acc_dev, LIS2DW12_XL_ODR_OFF);Motion detection configuration:accel_soft_reset();   /*Configure accelerometer for monitor motion mode*/ lis2dw12_full_scale_set(&handle.acc_dev, LIS2DW12_2g); lis2dw12_data_rate_set(&handle.acc_dev, LIS2DW12_XL_ODR_25Hz)); lis2dw12_power_mode_set(&handle.acc_dev, LIS2DW12_CONT_LOW_PWR_LOW_NOISE_12bit); lis2dw12_filter_path_set(&handle.acc_dev, LIS2DW12_HIGH_PASS_ON_OUT); lis2dw12_wkup_dur_set(&handle.acc_dev, 0); lis2dw12_wkup_threshold_set(&handle.acc_dev, handle.settings.motion_thld);   /*Enable interrupt generation in INT1*/ lis2dw12_pin_int1_route_get(&handle.acc_dev, &int_route.ctrl4_int1_pad_ctrl); int_route.ctrl4_int1_pad_c

I wonder if embrio can help me solve my problem. I have little programming experience. I'm trying to build a device that uses Arduino uno to draw accelerometer data from 9-axis motion shielding on a 1.8 "TFT display. I want to draw the data as close to real time as possible.I found three sample programs that I think contain everything needed to do all this. I lack the expertise to correctly combine them。 TFT graphic testSimulation diagram9-axis shield sample: accelerometerFrom the accelerometer example, I only need one axis to draw the graph. I was thinking that I could replace the potentiometer voltage in the TFT graphic example with this data.Thank you very much for any help.Thank you!:)

According to the data brief STSW-STLKT01 Embedded software samples for SensorTile (DB2962) the sample projects are "Built on STM32Cube software technology, it includes all the low level drivers to manage the on-board devices and system-level interfaces.", however, I do not see any of the .ioc files present. Please provide them so I can migrate existing applications to the SensorTile platform.If the .ioc files are not available, can you provide instructions for using CubeMX to generate a skeleton app for the STM32L4 MCU and BlueNRG controller that runs on the STEVAL-STLKT01V1?

When power is applied to the STM32L476, 3.3 v is also applied to the LSM303AH pins2             CS9             Vdd 10           Vdd IOThese commands work:MX_I2C3_Init();                      Goes to code created by CubeMX HAL_I2C_GetState(&hi2c3);  it is readyHAL_I2C_Init(&hi2c3);I get timeout error (32) with the following commands. What did I do wrong?HAL_I2C_Mem_Reads          All time outHAL_I2C_Mem_Writes         All time outHAL_I2C_Master_Receives     All time out

I'm trying to use the MEMS1 microphone streaming example, with 4 pdm microphone and a stm32wb55. I am able to use it to get a 48kHz 16 bits per sample with all the microphones without any issue.But when I try to use 24 bits per sample (I'm not sure this is how im supposed to set 24 bits depth but didn't find any other part related to resolution in the code) :The audio acquisition I get on Audacity is wrong :The first two channels are full of sound,

Hello everyone,I use NUCLEO STM32F446 and barometer MS5611 with I2C interface. I want to get temperature and pressure data but I am also getting damaged data from USART2. I haven't a problem about baud rate and it is 115200 Bit/s. What is the problem, have you any idea about that?You can see here my serial screen data: I used this code for getting data from UART: I also refer this example c

Hello,I am trying to set up an FSM on the LSM6DSO, but I have been struggling for several weeks. Upon further investigating the register values, I believe that I might have accidentally written to a memory location that changed something about the FSMs permanently. Before even writing to any registers, the value of FSM_STATUS_A IS 0x24 and the value of FSM_STATUS_B is 0x04. Those registers stay that way, regardless of interrupt status.Only this feature seems to have been affected, as I can still read/write to the accel and gyro, and embedded functions such as significant motion and tilt also work.I know people will be curious about what I am currently writing to registers, so here it is. Right now I am trying to configure the sample FSM that generates an interrupt every N samples (FSM Guide pg 53/ 10.1 Toggle)0x00 to CTRL1_XL0x00 to CTRL2_G0x80 to FUNC_CFG_ACCESS0x00 to EMB_FUNC_EN_A0x01 to EMB

Hello everyone,I am currently looking at the IIS2MDC and the LSM303AGR and I wanted to know what was the accuracy in degrees of these sensors. I want to rotate a camera towards the magnetic north with an accuracy f 1°. Do you know if these sensors could answer the needs of my project?Thank you in advance!

Is it need to write '1' to SOFT_RESET bit field in CTRL2 register when you change settings for the sensor in CTRL1, CTRL3, CTRL4_INT1_PAD_CTRL, CTRL5_INT2_PAD_CTRL, CTRL6, CTRL7 register ?

I am testing STWINKT1 board, it always use to work without any issues. Off late I am having issues to download the compiled codes into the unit.I connected the unit to ST-LINK Utility , it connects but reports Read out protection is activated.Luckily I have another board, I connect to this board and disconnect. Then I connect the first board, then the Read out error does not appear, Also I go on to download the codes with debug option.However it only works in the second attempt.Also next time I try downloading the codes, again it goes into read out protection activated mode.So every time I try to download the program, I have to go through this messy procedure.I do not understand why it is doing like this.Please find attached screen shots.RegardsShaun

Thresholds:lsm6dsl_****_debounce_steps_set(&IMU_Ctx, imuParams.debounce_steps);  lsm6dsl_****_timeout_set(&IMU_Ctx, imuParams.debounce_timeout);  lsm6dsl_****_threshold_set(&IMU_Ctx, imuParams.step_thd);function tp get cstep counter:uint16_t IMU_API_ReadAndClearStepsCounter(void){    uint16_t steps[2];    int tries = 2;    // do consensual decision    do {      lsm6dsl_read_reg(&IMU_Ctx, LSM6DSL_STEP_COUNTER_L, (uint8_t*)&steps[0], sizeof(uint16_t));      lsm6dsl_read_reg(&IMU_Ctx, LSM6DSL_STEP_COUNTER_L, (uint8_t*)&steps[1], sizeof(uint16_t));      tries--;    }while(tries && (steps[0] != steps[1])); &nbs

Dear Sir/Madam, I am currently working on the LSM6DSM IMU for a visual-inertial SLAM use and I have some questions about its features. Here is my IMU settings : Gyro : ODR = 208Hz FS = 2000dps High Pass 260mHz Acc : ODR = 208HzFS = 2g Analog BW 400Hz Low noise Low Pass ODR/100- Do you have the Noise Density and Random Walk values for the gyroscope and the accelerometer and also their different bias ? - Do you know if these data are unique for each IMU or all the LSDM6DSM have all the same reference values ? - Should we pre-process our raw IMU data before using them ? Thank you in advance.

i am trying to read the WHO_AM_I (read only) register and transmitting the data ( 0x0F | 0x80 ) and receiving the data from slave (0x6A) while checking in oscilloscope, but here is the problem that when i am driving (MISO) output of

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I am getting acceleration and gyro data using LSM6DSO32 chip. But I want to filter this data with internal filters, but I cannot activate the high pass filter of the accelerometer. In the code below, I want to send F4 (11110100) data to the CTRL8_XL control register, ie 0x17 register address specified in the datasheet, to set the cutoff frequency as ODR/800, but corruption occurs in the accelerometer data. How can I solve this?

Hi, my name is Vincenzo,I'm studying the MotionFX library and I want to understand In what order the quaternion is given by the MotionFX library. Reading the manual, I know that the MotionFX can compute:rotation, quaternions, gravity and linear acceleration data.Regarding the quaternion, I don't understand how the elements are ordered. It is an array with 4 elements: qw,qx,qy,qz (q0,q1,q2,q3). I suppose that it is the order, but can someone confirm it? Thank you in advance!

Configured the sensor ISM330DLC to capture 6.6KHz vibrations (which is max limit for chip).Questions:How the chip behaves for >6.6KHz vibrations detected?Is there a way on the HOST side (MCU side) to find these over limit vibrations and consider as error "VIBRATION OVER LIMIT"?Please assist.Regards,Seenu

Hi,In one of our projects we have to use the accelerometer LSM6DSL, and magnetometer LIS2MDL. The tilt-compensated magnetic heading have to be computed in accordance with the values read from these sensors. We have the respective EVKs connected to our microcontroller for trying out and verifying this. Basically, I am using the below equation for calculating the heading value,heading = (atan2(y,x) * 180)/3.1415;And with this, I am getting the heading value properly in a way such that the North is in the direction as marked in red arrow in the below figure. So I would like to know, 1) the axes direction labeled in the Datasheet is to the -ve di

As far as I can understand from the datasheet, the FIFO is shared and there is no guarantee in the sequence of the samples. For instance, accelerometer and gyroscope samples can be interleaved (e.g. first 2 samples are 3-axial accelerometer measurements and then the 3rd sample is a 3-axial gyroscope measurement e.t.c.). Without knowing the exact sequence how can I read data from FIFO? Does the MEMS sensor know that when I read for example from the OUT_X_G it should shift the oldest gyro measurement to the data register so I can read it out? (I suppose not because if the gyro and accel measurements are interleaved in the FIFO how it can keep track of where it is?).

Hi Guys, i have connected the LPS33HW sensor to my circuitPython code. i have also added another sensor on the same i2c peripheral (bus). one is addressed 0x5d (original), the other i changed the address as advised to 0x5c. however when i run both sensors, one of the sensors works fine and outputs and reads the pressure and temperature (1028 hPa), but the other gives a value of -656 hPa. i dont know where the issue is?

I'm using MEMS1 Microphone streaming project to record PDM data coming from 4 microphones and convert it into PCM data. I'm wondering how I can access to the PCM data coming from each microphone.From what I have seen so far, the output of the project is PCM_Buffer. As I want 48 kHz PCM audio, the size of PCM_Buffer is 48 kHz *4*1ms = 192 uint16. But the problem is that I want to separate the PCM data into 4 different buffers (for another project) and, if i understood correctly, the data of PCM_Buffer is mixed with all the microphones, I don't know how.Any idea about how you would do it ? Thanks

I have observed from the FFT that MEMS accelerometer output do not provide correct peak frequency (frequency at max. amplitude). There are some references that talk about variability of sampling rate of MEMS accelerometer. What are the different ways to get the actual sampling rate ?

Our board is similar to STM32MP157C-DK2 Disco board - All the Developer packages has been installed, After providing required functional voltages board's temperature rises rapidly as well as exponentially. After certain temperature there is some abnormal functional activities in the board. What is the reason and solution for the issue faced?

Hi all,We're using the ISM330DLCTR in our design. We have the device set up in "Mode 1." OCS_AUX and SDO_AUX are marked as N/C on the schematic. SDX and SCX are pulled to GND. INT1 and the SPI control lines are going to our application processor.The issue I'm noticing is that I'm unable to set any bits relating to the FreeFall function. I suspect I'm not able to set bits to the other embedded functions either.I've read through the Application Note and have followed the steps they recommend:- Turn on accelerometer via CTRL1_XL- Enable interrupts and latch via TAP_CFG- Set high bit of FF_DUR via WAKE_UP_DUR register, if dur that large.- Set FF_DUR and FF_THS via the FREE_FALL register- Enable the FF interrupt via a write to MD1_CFGThe problem I'm getting is that the bits relating to Free Fall don't ever set. I'm performing readbacks on all of these registers on write. Anytime I set a '1'