MEMS (sensors)

Using the ST Micro github drivers as reference, I have an lis2dtw12 that I want to use to detect 2 things:detect motion of any kind (and check the FIFO to confirm motion happened)detect a "drop" - eg "the consumer product was dropped and probably is broken"For case 1, I put the device to sleep, wake on activity, and fill the FIFO with the following:/* Set full scale */ lis2dtw12_full_scale_set(&dev_ctx, LIS2DTW12_2g);   /* Configure FIFO */ lis2dtw12_fifo_watermark_set(&dev_ctx, 10); lis2dtw12_fifo_mode_set(&dev_ctx, LIS2DTW12_BYPASS_TO_STREAM_MODE);   /* Set Output Data Rate */ lis2dtw12_data_rate_set(&dev_ctx, LIS2DTW12_XL_ODR_200Hz);   /* Configure filtering chain (Fig7 IN DS) * Accelerometer - filter path / bandwidth */   //Output Regs get the top path in Fig7: lis2dtw12_filter_path_set(&dev_ctx, LIS2DTW12_HIGH_PASS_ON_OUT); /* Configure power mode */ lis2dtw12_power_mode_s

Good day,I would like to know if it is possible to change the value of the temperature offset of the LPS25HB.If so what register will need to be manipulated?Thank you

Hi,Does the LPS25HB sensor automatically compensate for temperature ?If not how does one go about programming for it?Thank youCesar

I have a simple task, to wake up the CPU when the device is shaken.It should be pretty simple, the MEMS sensor samples with 10Hz until I shake it, then it samples with 100Hz, but I get no interrupt. :(I use the driver form GIT hub and Interrupt INT1https://github.com/STMicroelectronics/lis2de12/tree/21b9d1a565882a242143453580efb6abcd450686My CODE: /* Set full scale to 2g */ lis2de12_full_scale_set(&(phandler->ctx), LIS2DE12_2g); /* route HP filter output on outputs registers */ lis2de12_high_pass_on_outputs_set(&(phandler->ctx), PROPERTY_ENABLE); /* route HP filter output on interrupt generator 1 */ lis2de12_high_pass_int_conf_set(&(phandler->ctx), LIS2DE12_ON_INT1_INT2_GEN);

Hi, I have purchased an STEVAL-MKI109V3 and the STEVAL-MKI207V1 (ISM330DHCX)I followed the instructions in section 4 in dm00331058-stevalmki109v3-professional-mems-tool-motherboard-for-mems-adapter-boards-stmicroelectronics.pdf to stream the dataIf I type in the incorrect adaptor board in the hyperterminal (setdb105v1) I get the results in fig 1. If I type in the correct one setdb207v1, I get what’s show in figure 2, which is no data being receivedThe 3 led (blue, orange and red) are all lit upI am really struggling to get the accelerometer and gyroscope data, I would really appreciate your help in this matter 

I am exploring Sensor tile Box in pro mode. STM32L4R9ZIJ6 is the controller in it. I tried to display a string using UART pins in the JTAG pin section. While debugging the code was working without any halt. But I didn't got any display in serial console.I am using STM32cubeIDE for programming the board and Tera Term to display the serial communication. Baud Rate I used is 115200.-------------------------------------------------------------------------------------#include "main.h"UART_HandleTypeDef huart1;static void MX_GPIO_Init(void);void SystemClock_Config(void);static void MX_USART1_UART_Init(void);int main(void){ HAL_Init();MX_GPIO_Init(); SystemClock_Config(); MX_USART1_UART_Init(); while (1) { HAL_UART_Transmit(&huart1, (uint8_t *) "Hello", 10, 1000); HAL_Delay(1000); }}void SystemCloc

Hello,      We are interfaced the nrf52811 with LSM6DSO32 through i2c and LSM6DSO32 is connected to Auxiliary(Temperature MAX30208) sensor through mode 2 connection.here I am able to read the chip id but not able to read the actual temperature data.and i refereed the following link to create the auxiliary sensor read and write function.github.com/.../lsm6dso32_reg.clsm6dso32_sh_master_set();lsm6dso32_sh_data_rate_set();lsm6dso32_sh_cfg_write();lsm6dso32_sh_read_data_raw_get();https://github.com/lewisxhe/MAX30

Is IIS3DWB data already vibration information, or is there some algorithm needed to convert to vibration data? https://www.st.com/en/mems-and-sensors/iis3dwb.html

I want to readout the STSS22H, without any polling or I2C clock stretching. I want to use the following sequence:Send soft reset commandSend one shot command Release I2C bus for other processes to useWait for the maximum conversion time of the one-shot modeGet the resultRelease I2C bus for other processes to useWait for a couple secondsRepeat from step 1Is this possible with the STSS22H, where can I find the maximum conversion time in one **** mode? This information is missing in the datasheet.

we are trying to configure LSM6DSOX in high-performance mode. Following configurations are done on the sensorODR --> 6.66khz(high performance mode) and G-Range --> 16gRegister addr(CTRL6_C) --> XL_HM_MODE --> value(0x00)Register addr(CTRL6_XL) --> XL_FS_MODE --> value(0x00)Register addr(CTRL1_C) --> ODR(6.66khz) and G range(16g) -->value(0xA4)observed output values around 62242 range for x-y-z-axiscan you please confirm whether our configurations are correct and the observed value is the expected value?

I'm at a loss to figure out this issue with this sensor box, STWINCSV1b. I can get almost all of the applications to build, run and install, I can send the sensor data to the SD files and stream via USB to a terminal and get the BT and WiFi to work. What I can't get to work is the actual cli_example application to connect to the device. I notice there is no device file generated when it's plugged in via the USB, but lsusb and the logs show the proper information: kernel: [259152.269021] usb 9-3: new full-speed USB device number 97 using ohci-pcikernel: [259152.472070] usb 9-3: New USB device found, idVendor=0483, idProduct=5743, bcdDevice= 2.00 kernel: [259152.472075] usb 9-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3 kernel: [259152.472078] usb 9-3: Product: STWIN Multi-Sensor Streaming kernel: [259152.472081] usb 9-3: Manufacturer: STMicroelectronics kernel: [259152.472083] usb 9-3: SerialNumber: 204E318

Hello,I'm trying to program the STEVAL-IDP005V2 with the stlink mini v3.The problem is that i don't have any power on the board.The St-Link V3 mini is powered by USB, and the power don't go to the STEVAL board.Even when i try to power it through the IO-LINK master nothing happen.Is this normal ?If not, how can i solve this problem ?Thanks ^^

We have all SMT circuit which has BNO055 and STM32F446RET6. Currently our BNO on is not working. All we did was making our GPS module smt in our new version of our circuit and it stopped working. Is it because of our GPS module? Or it can be something else? Please help us.Schematic of GPS and BNO055:(UART and I2C pins doesn't have any other connections other than seen in the images)

I am porting the VL53L0X API stack over to my platform, currently using a X-Nucleo-53L0A1 board. I am trying to debug this issue. My issue seems very similar to this older post:https://community.st.com/s/question/0D50X00009XkXPeSAN/vl53l0x-inialisation-failing-in-perfomrefspadmanagmentI pass Static init OK, but fail in the PerformRefSpadManagement, register VL53L0X_REG_RESULT_INTERRUPT_STATUS returns 0x54. this eventually drives a Status = VL53L0X_ERROR_RANGE_ERROR in the return.I have two x-nucleo-53l0A1 boards and they both exhibit this error. Is the recommendation to modify the calibration api to ignore the 0x54? I tried stepping past it in debug and proceeding, but If I continue past the error and configure for single ranging (high speed measurements), the measurement

Does the ST BLE Sensor provided on github has the rotating cube code?Do the inputs provided to the rotating cube is coming from the sensor-fusion running on the embedded device or on the App side?Can you please point the code and the source files which is taking the inputRegards,

Hi all,I am using the ST library Motion MC for Magnetometer Calibration. The Library works really well but it always needs calibration in 8 figures to get a good status. We notice that The hard and Soft iron parameters are not changing from one calibration to another. Could these values be saved and used in other geographic locations without any 8 figures calibration since they are stable?Please is there anyone who has tested this method. In our case we don't need the exact north orientation and it will be used in North-AmericaMany thanks and waiting for your reply,

We Ordered > 100k parts at the start of February this year: My distributor (EBV) is not even getting a confirmation date, and if something is given by ST, it is far in 2022. (Date today is August 13)ST, what is going on here? Please explain and inform your customers, so they can decide to wait or to start to execute an 'escape plan' (= going away from ST MEMS devices) Time is ticking away and we run into tremendous problems. Our stock is growing, cash flow is going down, because we can't produce due to a couple of silly ST MEMS devices that are not available. It may lead to board change, and kick out ST devices from it, I am sorry.Everybody is blaming COVID for these problems, but hey, in the electronics industry there was NO REASON at all to stop production. I have to say this that we consider this as a giant management f*ckup in the semi conductor industry in general.(Note that the parts we ordered are active parts with 'in production' status)

Dear support,I need a very low noise Z-axis accelerometer for our application.I've done some R&D experiments with LSM6DS3 Z-axis accelerometer with satisfactory results. I'm now trying to replicate the success with smaller & cheaper LIS2DW12 that supposedly has the same 90ug/SQRT(hz) as the LSM6DS3, however trying my best to configure for low noise, high performance, limit the bandwidth etc. and the best RMS noise I get is still 4x that of the LSM's Z-axis and around 2.5x higher then the LIS's own X & Y axes.The LSM is configured for 833sps , LPF=16Hz while the the LIS is configured for 200sps, LPF=10Hz due to its LPF ODR/20 limitation- this is the lowest noise configuration I found even though I actually prefer a higher BW.FFT consistently shows about +20db higher noise across the low frequency spectrum in the LIS vs. the LSM (except at 20Hz, see footnote)The (DC removed) RMS noise of the LSM z-axis is 1mg while the LIS z

We are Reading Accelerometer Raw Data from the sensor and plotting FFT on excel sheet The ODR was configured to 6660(6.66Khz)Each Time we are reading 256 points of X, Y , Z Plz find the attachment for more details The Motor is running at 800Hz we are observing peak at 2KHz . Not sure why we are getting wrong FFT plot .Can you help why I am getting wrong FFT Plot.

Hello,I need to interface STM32 with SMI230 IMU sensor is there any libraries or driver for programming, I have found the linux driver for the SMI230, in my use case i am going to use STM32 MCU which cannot run linux OS, so "I need a driver which uses generic C API's which i port it to the STM32 environment" .Thanks

Can someone help with the specific sequence to get the INT_DRDY output to become active when the pressure drops from the reference pressure by 156 hPA (120 mmHg).I have read and reread the data sheet, and examined the ST "C" library source. I am able to configure the output pin for DRDY successfully.The current sequence is outlined below. I've tried several different orders of the sequence. The pressure readings are correct in both value and timing. The INT_DRDY works correctly when configured as DRDY. However, applying an external vacuum that is 3X the threshold setting does not cause the output to be active.Thanks for your help in this matter.Dave1) Perform a software reset.2) Initialize control registers 1 - 3. Here are some relevant bits:    REG.CTRL.REG1.ODR        = 5; //Output data rate 75Hz   REG

LSM6DSO will NACK the broadcast after the RSTDAA sent in the reboot probe sequence.Here is the case to reproduce the issue:1. Only one LSM6DSO is on the I3C bus which is in pure I3C mode.2. The first-time kernel boot after power-up is okay. I3C bus and LSM6DSO both probe okay.3. Execute command “reboot�? in rootfs to do the warm reset.4. The LSM6DSO will NACK the second I3C bus broadcast after I3C sends the broadcast of RSTDAA(0x6) when it is rebooting. Is there anyone meet this problem? I use the upstreamed code of this sensor in Linux kernel: drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.cThanks.

Hello! I tried to work with  motion detection function and here is my setup of interrupt pin /* Interrupt pin setup */ lsm9ds1_pin_notification_set(MAG_I2C_ADD, IMU_I2C_ADD, LSM9DS1_INT_PULSED); lsm9ds1_pin_polarity_set(MAG_I2C_ADD, IMU_I2C_ADD, LSM9DS1_ACTIVE_HIGH); lsm9ds1_pin_logic_set(IMU_I2C_ADD, LSM9DS1_LOGIC_AND); lsm9ds1_pin_mode_set(MAG_I2C_ADD, LSM9DS1_PUSH_PULL); lsm9ds1_pin_mode_set(IMU_I2C_ADD, LSM9DS1_PUSH_PULL);   lsm9ds1_pin_m_route_t int_m; int_m.ien = 1; lsm9ds1_pin_int_m_route_set(MAG_I2C_ADD, int_m);   lsm9ds1_pin_int1_route_t pin_cfg; pin_cfg.int1_drdy_g = 1; pin_cfg.int1_drdy_xl = 1; pin_cfg.int1_ig_g= 1; pin_cfg.int1_ig_xl= 1; lsm9ds1_pin_int1_route_set(IMU_I2C_ADD, pin_cfg);   /* Set Output Data Rate / Power mode */ ret = lsm9ds1_imu_data_rate_set(IMU_I2C_ADD, LSM9DS1_IMU_119Hz); //LSM9DS1_IMU_119HzBut I get completely chaotic condition of interrupt PIN even I don't touch

vl53l1_class.cpp, Line 3864ff //Fix for some STM32 boards //Reinitialize th i2c bus with the default parameters#ifdef ARDUINO_ARCH_STM32 if (status) { dev_i2c->end(); // the method end() doesn't exist, you meant: dev_i2c->endTransmission(false); ? dev_i2c->begin(); }#endif

I got the VL53L3CX-Satel kit and it is behaving very strangely.I connected i2c pins (SDA and SCL), GND and VDD (3.3V).I get different addresses every time I run i2cdetect:devboard:~ $ i2cdetect -y 1 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: 03 -- -- 06 -- -- 09 0a -- -- 0d -- -- 10: -- 11 -- 13 -- 15 16 17 18 -- 1a -- 1c 1d -- -- 20: -- -- 22 -- -- 25 -- -- -- -- -- 2b 2c -- 2e 2f 30: -- -- 32 33 34 35 -- 37 -- -- 3a 3b 3c -- 3e -- 40: -- -- 42 43 -- 45 46 47 -- -- -- -- 4c -- -- 4f 50: 50 51 -- -- -- -- -- -- -- -- -- 5b -- -- 5e -- 60: -- -- -- -- 64 65 -- -- 68 69 6a -- 6c -- -- -- 70: -- -- -- -- 74 -- -- 77   devboard:~ $ i2cdetect -y 1 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- 06 07 08 09 -- 0b 0c -- -- -- 10: -- -- 12 13 -- -- -- 17 18 19 -- -- 1c 1d -- -- 20: -- 21 22 -- 24 -- 26 -- 28 29 2a 2b 2c -- -- 2f 30: -- -- -- 33 -- 35 -- -- 38 39 -- -- 3c 3d 3e -- 40: -- 41 -- 43 44 45 46 47 -- 49 -- 4b -- -- 4e 4f 50: -- 51 -- 53 -- --