MEMS (sensors)

Are here any example projects on how AcousticBF library should be configured exactly for PCM mode? There are plenty of examples for PDM mode configuration, but none for PCM, which is frustrating, since the documentation on this library is not very explicit.When I'm trying to configure it, AcousticBF_FirstStep function fills only 1/3 of the output buffer, so the output sound is very distorted. Any help is appreciated.

Hello to all,I have problem using Unicleo-GUI with BLE connection and STEVAL-STLKT0V1 SensorTile Kit. I tryed to load inside the SensorTile the AM1V410 firmware and the AM2V210 firmware but with both I didn't have success.I follow the video tutorial: first enable the BLE connection inside the Unicleo-GUI, then make the peering with the SensorTile and the PC then open the Unicleo-GUI to see the service available on the popup. But nothing appear. Attached two screenshot with the output of the Dbgview.exe program, the peereing and the Unicleo-GUI. 

I see that ODR mentioned in datasheet is 26.7Khz but my doubt is that whether it is in each direction (x,y,z) or combined for all 3 axis. This is because when i try to measure the time taken to take samples then i get it around 9000Hz in each direction. I am using data polling technique via STM32 F4 controllerIf it is so then how BW of 6.3Khz is achieved 

Hello, I have difficulties to get value of 0x68(IMU) and 0x3D(Magnetometer) from LSM9DS1 WHO_AM_I Reg 0x0F. I did on custom made board with STM32L083RZ and use I2C communication to LSM9DS1. I am using I2C3 PortC pin 0 and pin 1. The SDA&SCL are both pulled up with 4.7kOhm to VCC_MCU. CS_A/G Pin are pull-up to VCC_MCU without pullup resistor. And SDO_A/G and SDO_M pin are connected directly to STM32L0 at PortC_2 and PortC_3 which are then set(HIGH) as output_OpenDrain in GPIO Init() function. The address of slave would be 0x68<<1. As I debug, I can see SDA& SCL are both correctly configured as Alternate Function OPEN DRAIN (AFRL=0x00000077). But the PROBLEM is I cannot read WHO_AM_I value with function below HAL_I2C_Mem_Read (&hi2c3, LSM_ADDR_IMU|0x01,WHO_AM_I_REG,1, &check, 1, 1000);I did change slave address to other value and it still did not return me 0x68.@Can you help me? What is wrong.

Dear Team,We are using VL53l1X in our application to detect people leaving and entry, we got 5 vl53l1x breakout boards from one of my distributors for prototyping.People count programming working without any issues when using it in polling/continuous mode, but for power optimization we want to use an interrupt method, Count increment and decrement should happen when there is an interrupt, rest of the time the main controller and other things to be in sleep mode.Took code from -> en.STSW-IMG010.zipPolling method works fine herePlayed with ROI, timing budget as per my application everything works fineModified the given code for interrupt method, we are getting interrupt but we are getting wrong path most of the time and wrong count.Here is the code...//Event CallBack void interrupt_handler(nrf_drv_gpiote_pin_t pin, nrf_gpiote_polarity_t action

Hello,I am using LSM6DSO sensor to do a pedometer. I use the official interrupt signal to control the step update like the following sentence.int1_route.emb_func_int1.int1_step_detector = PROPERTY_ENABLE;But I found the interrupt signal always has some delays. When I am moving, sensor will not produce an interrupt signal. After I stop moving for few seconds (about 10 seconds), the sensor will send an interrupt signal. Is there some settings for this condition?Thank you.

Hi Sir,We have used the LSM6DS3 part in our application boards. Now the distributor mentioned LSM6DS3 part ha end of life and New part is LSM6DSL.Please confirm this new LSM6DSL part is pin to pin and firmware side compatible with the LSM6DS3 part. Or please share changes .RegardsAnees PK

Hello,I would like to include this board on a custom design but I was unable to find it's pads, connectors layout.There's nothing in the datasheet and only gerbers are available... :(Where can I find this information?ThanksJulien

My test:I want to set up the FIFO for bypass->stream, and then just move (shouldn't have to be a violent shake) the PCB that has the lis2ds12 on it and see the FIFO have data. I'm only able to detect violent shaking... could you please advise / suggest more sensitive settings?Right now it only (KIND OF) works if I leave datarate set to ```c /* Set XL Output Data Rate */ lis2ds12_xl_data_rate_set(&dev_ctx, LIS2DS12_XL_ODR_50Hz_HR);```In this mode, if I VIOLENTLY SHAKE the lis2ds12, I get data in the FIFO. If I change this to closer to the settings that I already have working on the other ST chip (lis2dtw12), eg `LIS2DS12_XL_ODR_200Hz_LP` - it doesn't work at all. My set up is based on the github example here:

Can there be a 2d barcode reader app or program on your computer or phone?

Hello,I am using the FIFO to read the gyroscope and accelerometer data from the LSM6DS33 using a Raspberry Pi. It is connected over I2C at a frequency of 400kHz. Currently it takes between 4-7 seconds of constant reading to empty out the FIFO and by then it's almost full again. Is there a way to do a bulk read of the FIFO rather than read each sensor reading separately?Thanks,Mahmoud

Hello, I tried to use FIFO in way to count data ready . My idea to count sample and if it is a 32 sample in FIFO I read all at once. As far I understand, according by datasheet "Accelerometer and gyroscope multiple reads (burst)" Page 21Data stores into FIFO in this way0, OUT_G_X,OUT_G_Y,OUT_G_Z,OUT_XL_X,OUT_XL_Y,OUT_XL_Z1, OUT_G_X,OUT_G_Y,OUT_G_Z,OUT_XL_X,OUT_XL_Y,OUT_XL_Z...31, OUT_G_X,OUT_G_Y,OUT_G_Z,OUT_XL_X,OUT_XL_Y,OUT_XL_ZThat is my setup of sensorlsm9ds1_fifo_temp_batch_set(IMU_I2C_ADD, 0); lsm9ds1_fifo_mode_set(IMU_I2C_ADD, LSM9DS1_STREAM_MODE); lsm9ds1_fifo_stop_on_wtm_set(IMU_I2C_ADD, 28);   pin_cfg.int1_drdy_xl= 0; pin_cfg.int1_drdy_g = 1; pin_cfg.int1_boot = 0; pin_cfg.int1_fth = 0; pin_cfg.int1_ovr = 0; pin_cfg.int1_fss5 = 0; pin_cfg.int1_ig_xl = 0; pin_cfg.int1_ig_g = 0; lsm9ds1_fifo_watermark_set(IMU_I2C_ADD, 32); lsm9ds1_fifo_watermark_get(IMU_I2C_ADD, &val

I am trying to run the ACCEL 10 CLICK based on the LIS2DW12TR on MicroPython on i2c protocol.A perfectly working code of the ADXL345 is https://github.com/DFRobot/micropython-dflib/blob/master/ADXL345/user_lib/ADXL345.pyTaking this as a reference I tried to run the LIS2DW12TR by making change of respective registers. My code is as follows:https://github.com/Yadnik1/Accel-10-i2c ,however it returns only 0's an output of the three axes and does not sense any change on movement.

Hi there!​We've used Unico a lot and find it really cumbersome to create new `.ucf` files: you need to juggle between apps, you can't go back during configuration, if you've made a mistake you have to start from scratch. And it's not possible to automate the process...​We've studied the `.ucf` and `.h` files and are wondering how we could generate them without using Unico. Or at least juste use the "copy past the decision tree and generate the files" instead of having to do everything each time.​It is possible and if so, where can we find documentation?Unico is great for evaluation but for our product and use case, it's really not that great.​​Thanks a lot!Ladislas

Greetings,I have been working on the SensorTile.box and specifically the pedometer functionality (worn on wrist) for a while now and I am stuck right now.I want to optimize the algorithm to reliably count steps. To achieve this, I began optimizing it for myself, using Unico GUI, just to see, if it is possible the way I intended.For this purpose, I wrote a datalogger, which I pretty much confirmed to work in the way intended, I cut the accelerometer data using Matlab to verify, that I only use actual walking footage for the regression tool in Unico GUI and in the end got an error average of 0 when I fed new data to the tool. I also checked, if the accelerometer configuration is the same in the logger firmware, as well as in the step counter firmware. The data was collected at 104 Hz and sampled down to 26 Hz.I am forced to work with a full-scale setting of 16g because of other projects running on the sa

Hi,i'm using the LIS3DSH to read data in different sampling rates (from 25 up to 1600), but in some cases i notice the first data in Z axe is not correct (some times it's too low or too high, for example, first data is -0.7g (or -1.5) and the rest are around -1g) and this happen with a random sampling rate, somethings happen when i use 100 hz and sometimes when i use 400 or 800. i even changed the anti-aliasing but i had no luck, the only think i can do is to wait until the value is updated in the sensor so i can get the next value at the start.this is a snap of my code to about the state machine configuration this is the initialization section:AccelTxCmd(0x01, LIS3DSH_CTRL_REG3_ADDR); /* registers reset */ AccelTxCmd(0x00, LIS3DSH_CTRL_REG4_ADDR); /* make sure LIS3DSH is off */ AccelTxCmd(0x00, LIS3DSH_CTRL_REG3_ADDR); /* make sure IRQs disabled */ AccelTxCmd(0,LIS3DSH_CS_X_ADDR); /* constant shift for x axis*/ AccelTxCmd(0,LIS3DSH_CS_Y_AD

Hi,While trying to calibrate the magnetometer, upon successive failures, I noticed that the values that were read for the Y and Z axes are successively repeated until a different value is read (as can be seen below). It appears that there's some kind of great threshold for a new value to be stored in the register. It's hard to debug this issue, especially since the documentation on the magnetometer of the LSM9DS1 is quite scarce (namely its functionality, as opposed to the accelerometer and gyroscope on the datasheet).The configuration is as follows:int32_t IMU_config(IMU_FW * imu){/* Check device ID */lsm9ds1_id_t whoamI;lsm9ds1_dev_id_

I have been working for days with the ST-link v2 and the Steval FCU001V1 in Ubuntu 18.04. I have generated the code for the most important utilities to read, for example, the sensors, set the LEDs and send data over the USB.I have compiled the code using makefile and I flashed the code on the Steval through the st-flash command from the terminal. Everything was working well until the stlink suddenly stopped to work. I can't even say whether this happened after a change of the Steval's main firmaware or not. The point is that the STLink is now no more recognized, at all, from 3 different operating systems: Mac, Windows 10 (VMWare) and Ubuntu 18.04 on two different computers.The Steval is still running and I can see IMU data from the usb.Furthermore, the st-link "com" led is stuck on ORANGE.I tried all the possible ST software out there but no one is able to see the STLink-V2. It's also impossible to u

Hi,I am using LSM6DSMTR on a Linux ARM V8 processor, I have complied the basic code using standard mems driver. I want to use the motionFx library to get the quaternion data . The provided library only includes the complied library and header files.

Hi, I am using the lis2dh12 accelerometer and I read the applications note and the datasheet, but after that, I'm still not understanding how to use the high pass filter. I want to use a high pass filter in reference mode. For reference mode as per my understanding, the output data is calculated as the difference between the input acceleration and the content of REFERENCE (26h). The content of REFERENCE (26h) is set per selected G-scale. I want to know how to use the filter in reference mode? Can I change the content of REFERENCE (26h)? Whether its content fixed as per the data sheet?

I recently purchased some secondhand ST M27C128B-12F1 online and am trying to program them correctly. The main information I am looking for is the Device ID, Vcc for writing and verifying (both), and Vpp. I was able to find a datasheet for the M27C128A but am not confident these parameters are the same.Thank you!

Hi,I am evaluating the LSM6DSOX sensor, focusing on the machine learning features. I have generated a UCF file using the Unico GUI, and I'd like to upload the configuration to the chip. I am using a custom board, not one of the official motherboards, so Unico cannot communicate with my hardware, I need to do the configuration manually.However, I have found no documentation on this. Looking into the UCF file, the lines look suspiciously like register address-value pairs. Can somebody confirm that this assumption is correct? If so, what is the "Ac" prefix? Is it relevant?Here are the first few lines of my UCF file as an example:-- Machine Learning Core GUI v8.0.1.0, LSM6DSOX   Ac 10 00 Ac 11 00 Ac 01 80 Ac 17 10 WAIT 50 ms Ac 05 00 Ac 17 00 Ac 01 00 Ac 10 A0 Ac 11 A0 Ac 10 00 Ac 11 00 Ac 01 80 Ac 17 40 Ac 02 11 Ac 08 EA Ac 09 4A Ac 02 11 Ac 08 EB Ac 09 03 Ac 02 11 Ac 08 EC Ac 09 54 Ac 02 11 Ac 08 EDThanks,

Hello!I recently bought an STEVAL-WESU1 sensor unit. However, when I connected the USB cable to the circuit board, the on board RED LED keeps blinking. According to the documentation it should be steadily lit to indicate charging. Would you be able to give me any tips in debugging? I apologize for the trivial nature of the question. I thank you very much in advance.

Hello everybody,I'm working on implementing the driver of shtc3 sensor ( temperature and humidity sensor) with an stm32L152xx microcontroller. I'm using the code example provided by the manufacturer( https://github.com/Sensirion/shtc3-stm-sample-project/tree/master/Source ) but, I replaced I2C functions with HAL functions provided by ST. However, there are some I2C write fucntions into some registers without the data to write which confuses me and I'm not able to make it work or just read the sensor id. Any suggestions or clarifications is more than welcome.Thanks in advance !