MEMS (sensors)

i am using i2c1 and uart2 to show any values i have created program but i am not getting any values from accelerometer. can you tell me any one, solution of this problem I2C_HandleTypeDef hi2c1; UART_HandleTypeDef huart2; /* USER CODE BEGIN PV */#define LIS3DH_ADDR 0x19// I2C address of LIS3DH accelerometer  /* USER CODE END PV */ 

Anybody know where I can get the data sheet for MEMS AR products and how can I purchase it?Thank you.

I have the Sparkfun version of the LSM6DSV16X. I used it with the Arduino IDE and everything works easily. I migrated that LSM6DSV16X board to using a Nordic nrf5340dk. There doesn't seem to be a working library for the LSM6DSV16X, but that is ok as I would like to control it directly over I2C.I am able to read WHO_AM_I = 0x70. I am also able to read LSM6DSV16X registers that have default values.What I can't do is read any values from "output" registers that should hold Accel and Gyro data. I imagine it's because I don't have the configuration bits set correctly as anything I read comes back 0x00.I2C, IMU's, LSM6DSV16X, and the nrf5340 are fairly new to me, can you help me with steps to take to set the LSM6DSV16X up manually so that I can get the same Accel/Gyro output I was getting from the Arduino library? This is the general idea of how I expected it would work. I believe that I a

I have used the LIS3LV02DQ before but it is no longer being made. A new circuit has the IIS328DQ but I can not get it to work as the did. I can successfully get the WHO_AM_I to return and set/read the control registers so I know the SPI is working fine. All I want to do is continuously read the X, Y, and Z values after a Data Ready interrupt.My code first does a WHO_AM_I, then sets the config registers with CTRL_REG1 = h20 (Normal mode, 50hz, xyz off). Then I read all the registers and print to a terminal, then turn on xzy, read INT1_SRC to clear any interupt 1, then wait for Data Ready. Data ready never happens.What am I doing wrong? How can I make it work just like a LIS3LV02DQ? Here is what is printed to the termial:WHO AM I - 32REG h20 = 20REG h21 = 00REG h22 = 82REG h23 = 80REG h24 = 03REG h25 = 00REG h26 = 00REG h27 = 00REG h28 = 10REG h29 = 01REG h2A = C0REG h2B = 0

Does ST offer any IP67 microphones with analog output?

I'm trying to figure out if a latched interrupt affects the INT pin signal. I'm working with Arduino. The datasheet says the following on page 44:AOI-6D = ‘11’ is direction recognition. An interrupt is generated when the orientation isinside a known zone. The interrupt signal remains while the orientation is inside the zone.I understand that latched interrupt makes the IA bit on INTx_SRC stay HIGH until i read the register.But when I enable LIR, this doesn't seem to be true.Before configuring everything, I reset all the registers to default value. I configured INT1 without LIR and INT2 with it to check the difference.I put a LED on each INT pin.Here's the configuration code:write_reg(LIS_ADD, CTRL_REG1, 0x97); // 0x97: 1344 Hz, enable XYZwrite_reg(LIS_ADD, CTRL_REG2, 0x00); // 0x00: HP offwrite_reg(LIS_ADD, CTRL_REG3, 0x40); // 0x40: IA1 on INT1write_reg(LIS_

While I’m using ASM330LHH the gyroscope’s data jump to unusual value just once sometimes . The data rate is 10hz 

Hi all, I'm trying to move Finite State Machine config from devkit using Unico GUI to final application. I've prepared movement wakeup example from FSM datasheet in Unico, which is working totally fine on devkit, it could even detect knocking in desk.static const uint8_t lsm6dso32_prg_wakeup[] = { 0x50, 0x40, 0x12, 0x20, 0x0C, 0x0D, 0x00, 0x38, // threshold (1.00) 0xAE, 0x23, // hyst (0.03) 0x02, //mask A 0x02, //temp mask A 0x41, 0x75, 0x10, 0x10, 0x22, 0x00 };I've tried to replicate example from here:

Posted on June 12, 2017 at 11:07Hi,I have inserted the accelerometer in a custom board.Is is connected via I2C to a microcontroller, Vdd and Vdd_IO both connected to 3V3.In my application the micro controller awakes when the acceleration on all the axis is grater than a predetermined threshold.The configuration works fine and also the data read have sense but the INT1 pin remains low.Following the registers configuration:&sharpdefine IIS2DH_CTRL_REG1_DATA         ((BYTE)0x47)  // ODR = 50Hz, Normal Mode, X + Y + Z axis all enabled&sharpdefine IIS2DH_CTRL_REG2_DATA ((BYTE)0x00) // filter disabled&sharpdefine IIS2DH_CTRL_REG3_DATA ((BYTE)0x40) // I1_AOI1; AOI1 interrupt on INT1&sharpdefine IIS2DH_CTRL_REG4_DATA ((BYTE)0x30) // FS = +/- 16g, No High Resolution&sharpdefine IIS2DH_CTRL_REG5_DATA ((BYTE)0x08) // Latch Interrupt request on INT1_SRC

Hi everyone,   First of all, I use a STWINBX1 board, which include a MCU and several sensors. I try to get the magnetic field by reading the output of the magnetometer (IIS2MDC), but the output value seems false. Please note that : - I checked the PIN configuration on STM32 CubeIDE, and the PINs are well configured. - I use HAL library to configure the chipset (IIS2MDC), and to use I2C protocol. - I tested 2 differents methods of reading the output using I2C functions from HAL (HAL_I2C_Mem_Read and HAL_I2C_Master_Receive). Both method return me the same output, which is even more confusing for me. - I have two differents boards of the same models that give me the same errors in the output. - The slave address (of the Magnetometer) is 0011110b. I have two variable for read and write the slave, which are :         uint16_t

Hi,we are using the LSM6DSO in Fifo mode and with the double tap feature. Our firmware configures the Sensor Frontend to give an interrupt at fifo_th on INT1 and for double_tap on INT2. Therefore, we explicitly disabled the INT2_on_INT1 bit inside the CTRL4_C register.But still we see the the INT2 interrupts on the INT1 line. (See plot)We always reset the sensor to default. So I guess it seems something is not correctly configured.Here is the code for configuring the sensor:  // configure for the first time ret_code_t err; // Get ID err = lsm6dso_device_id_get(whoamI); if (whoamI[0] != LSM6DSO_ID){ APP_ERROR_CHECK(NRF_ERROR

Hello,I am wondering if the presence of gel in the LPS28DFW makes it more susceptible to vibration than LPS22DF. These sensors will be in a vibration environment, and I'm concerned that the vibrating gel in the sensor will negatively affect the pressure readings. Is this a valid concern, or will the gel have negligible affects compared to the LPS22DF?Thank you.

Hello all,I want to use FIFO to store my acceleration data.When FIFO is not configured, the data I read from OUT_X_L, OUT_X_H, OUT_Y_L, OUT_Y_H, OUT_Z_L, OUT_Z_H are okay. By "not configured" I mean FIFO_CTRL_REG = 0x00, which is the default value that corresponds to the bypass mode.But when I write FIFO_CTRL_REG = 0x40 to select "FIFO mode" (or any other mode, such as "stream mode"), the data from OUT_*_* are frozen: I always get the same values every time.I didn't even enable FIFO on CTRL_REG5 (bit FIFO_EN=0), nor did I enable anything on CTRL_REG3 (to allow interrupts triggered by FIFO overrun or FIFO watermark).When I do enable FIFO on CTRL_REG5 and the interrupts on CTRL_REG3, but keep FIFO_CTRL_REG = 0x00, acceleration data are still okay.When I configure everything properly by enabling FIFO, selecting any mode that is not "bypass mode" and its interrupts, acceleration data are frozen.

Hi,we are working on integrating this sensor to our device. We would like to make it work as human detection in front of our device. I am testing this sensor using "STEVAL-MKI231KA" board without lens connected to our development board via I2C and I have problem to make it properly work with cover glass. I have tested thin and also thick transparent cover glass (1mm and 4mm) and the sensor's behavior is the same in both cases. Presence data from the sensor are not changing when human steps in front of the sensor even when the human is very close to the sensor.Behavior without cover glass is as expected. It detects human in far and close distances without any problem.Can you please advise me how to solve this? Does the sensor support some sort of calibration with cover glass?

When I configure FIFO, for some reason Z is always around 1g even though HP filter is active.Here is my setup with FIFO:write_reg(LIS_ADD, CTRL_REG1, 0x77); // 400 Hz, enable XYZwrite_reg(LIS_ADD, CTRL_REG2, 0x3C); // HP data sent to FIFO and HP enabled for CLICK functionwrite_reg(LIS_ADD, CTRL_REG3, 0x80); // CLICK on INT1write_reg(LIS_ADD, CTRL_REG4, 0x30); // 16g, HR disabledwrite_reg(LIS_ADD, CTRL_REG5, 0x48); // FIFO EN, LIR_INT1write_reg(LIS_ADD, FIFO_CTRL_REG, 0x98); // stream mode but FTH doesn't matter because I won't use WTM flagwrite_reg(LIS_ADD, CLICK_CFG, 0x15); // single click for XYZwrite_reg(LIS_ADD, CLICK_THS, 0x82); // LIR_click and ths 250mgwrite_reg(LIS_ADD, TIME_LIMIT, 0x0F); // 30 mswrite_reg(LIS_ADD, INT1_CFG, 0x00); // XYZ don't generate interruptwrite_reg(LIS_ADD, INT1_THS, 0x02);write_reg(LIS_ADD, INT1_DURATION, 0x00);===========================

Hi,I'm developing a power meter bicycle using the LSM6DSOTR with NRF52832 microcontroler. In my project I defined that 3 minutes without moviment, the system is turned off and wake up when the LSM6DSOTR detect the movement. Below, the code to init my sensor.void Wake_up_init(void){write_register(LSM6DS0_WAKE_UP_DUR, 0x00); // Set Activity/Inactivity thresholdwrite_register(LSM6DS0_WAKE_UP_THS, 0x02); // Select sleep-change notification - Select Slope Filterwrite_register(LSM6DS0_TAP_CFG0, 0x51); // Turn on the gyroscope - ODR_G = 104 Hz, FS_G = ±2000 dpswrite_register(LSM6DS0_TAP_CFG2, 0x80); // Set duration for Inactivity detection - Select Activity/Inactivity threshold resolution and durationwrite_register(LSM6DS0_CTRL1_XL, 0x70); // Turn on the accelerometer - ODR_XL = 104 Hz, FS_XL = ±2 gwrite_register(LSM6DS0_CTRL2_G, 0x4C); // Turn on the gyroscope - ODR_G = 104 Hz, FS_G = ±2000 dpsnrf_delay_ms(4);write_regi

Hi!I have a STEVAL-STWINKT1B sensor running the HSDatalog firmware. I am interfacing with it using an USB cable via linux and a modified version of the "cli_example" relying on the "HSDatalog.h" interface, which I am compiling using cmake. When running the program from the command line terminal, the program runs fine. However, if the recording is prematurely interrupted for some reason, the sensor can get stuck, and it is impossible to start a new connection with it. The simple solution to this is just by pressing the reset-button on the sensor, which after a few seconds solves the problem. However, I would like to be able to perform this reset without any manual interference. So my question is:Is it possible to trigger a reset of the sensor by either a command through the USB/Cpp-code, or by embedding some kind of code-trigger in the firmware? (For example whenever the sensor receives power from the USB).T

In our project we are using ism330dhcx, we are only using accelerometer, i want know how to process x,y and z axis data to get resultant.

I am using the LSP22HB on an I2C bus. I can read the "who am i" register and get the expected value. I can also read various configuration registers and see the default values. So, I believe I am communicating with the device.I don't set any registers since it seems the default values have the device in power down mode which is needed for ONE_SHOT operation. To get the pressure and temperature values I do the following steps:1. Write to CTRL_REG2 the value 0x11. This sets the IF_AUTO_INC and the ONE_SHOT bits. I am under the impression the ONE_SHOT bit starts the operation to get the pressure and temperature.2. I loop on reading the CTRL_REG2 and check the ONE_SHOT bit waiting for it to go to zero. This should indicate that the readings are now available.3. I then read the pressure and temperature registers. I get values but they are not correct. I have tried both multi-register access to get all the values in one I2C interaction and looping through and j

I have been trying to configure the steval mk1221v1 which is a breakout board for the lsm6dso32x imu sensor using spi 4-wire interface but can't make to work. I am not sure if i am making the right connections. I am sure I have connected the scl, sda, sdo and cs correctly but not sure what needs to be done with the vddio , sdx, scx pins. Do they need to be connected to 3.3v or left hanging. Moreover there are 2 sets of sdx and scx pins the reason for which i dont understand. Any help would be good. Thanks!Here's the code snippet for accessing the who_am_i register.uint8_t reg = WHO_AM_I | 0x80 ;HAL_GPIO_WritePin(LSM_CS_GPIO_Port, LSM_CS_Pin, GPIO_PIN_RESET);HAL_SPI_Transmit(&hspi1, &reg, 1, HAL_MAX_DELAY);HAL_SPI_Receive(&hspi1, &ret, sizeof(reg), HAL_MAX_DELAY);HAL_GPIO_WritePin(LSM_CS_GPIO_Port, LSM_CS_Pin, GPIO_PIN_SET);

I have timestamp counter enabled and batching to FIFO with decimation=1. I can see the timestamp values are interleaved with the accelerometer values, but the timestamp values are always 0 like this (this is SPI trace):22 00 00 00 00 00 0A12 32 F7 2F FC 9A 4124 00 00 00 00 00 0A14 DE F6 AE FC 94 4327 00 00 00 00 00 0A17 9B F6 3E FC 23 4021 00 00 00 00 00 0A11 EE F6 46 FC A6 4222 00 00 00 00 00 0A12 49 F7 54 FC 69 42The last byte 0A contains I guess the BDL (1010), and tag sensor is 0x4 so it should be timestamp value but why does it contain only zeroes ?

Hi,We notice that LIS3DH accelerometer has multiple mode which can be utilized to be used on low power mode for single/double tap detection. Does single/double tap detection increase the current consumption stated on the data sheet/design tip?https://www.st.com/resource/en/datasheet/lis3dh.pdfhttps://my.st.com/content/ccc/resource/technical/document/design_tip/group0/d6/1d/5f/b0

Hi,I am using examples from the github repo to test accelerometer. I can read device id from both accel and magnetometer. Also I can read back the registers I set.  However, when it comes to read accelerometer, I read same values from all axis of the accelerometer such as A0A0A0 or 808080 and so on. Another behavior I observed is sometimes, boot register stuck as 1 after I use to BOOT bit from CTRL_REG5_A.Also I read very low values from magnetometer and 0 from temperature sensor.Is there any idea what is going wrong?Thanks.

I'm attempting to use the LIS2DE12 in perhaps the simplest configuration: To directly poll the X,Y,Z registers as needed. I'm using the I2C bus. At this point, I've added some debug checks, so the current process looks like this: 1. On wakeup, I read the WHO_AM_I register to verify I'm talking to the correct device. I am.2. (debug) I read all the read/writeable registers so I can see what they are. All of them match the documentation's default values except CTRL_REG1 (0x20). Instead of the expected response of 0x07, I get 0x01. 3. I write to CTRL_REG1 (0x20) the value 0x5F. According to the docs, this should enable X, Y, Z, enable the device, and set the rate to 100Hz4. (debug) I read all the readable values. All other writeable registers are still defaults, but the CTRL_REG1 register has changed... but it doesn't contain 0x5F... it contains 0x02 !? Also interesting is the X, Y, and Z all contain non-zero values at this point, but the STA

Hi all, I am implementing SFLP in ArduinoIDE using the board library and examples and have modified the code to also batch the accelerometer and gyroscope data in the FIFO buffer, however this creates a consistent delay in the data transmission which is not there when I am solely batching the SFLP game rotation vector. This is the line of code which makes the difference, although I am not sure why or how to get rid of this delay:   status |= AccGyr.FIFO_Set_X_BDR(BATCHRATE);  status |= AccGyr.FIFO_Set_G_BDR(BATCHRATE);The batch rate is 120 Hz. for all ODR in the program.  Thank you in advance.