Forum Posts
Which MCUs have SAI with PDM interface, as suggested by AN5027?
I'm trying to implement a 6- or 8-microphone arrangement, as outlined in AN5027 (p25). The recommended approach is to use an SAI with PDM interface, but I'm struggling to find a suitable MCU (and subsequently, a suitable Nucleo dev board). I've not ...
Why would the LSM6DSO outputting inaccurate/incorrect data (0, 0, 0) for (x, y, z) accelerometer data?
Hi folks, I am using the LSM6DSO sensor and trying to output data via the pin 2 interrupt. I've set up the interrupt to fire when the FIFO is full to a predetermined threshold. After the FIFO interrupt fires, the system will empty the FIFO of the dat...
I'm using the ST iis3dwb mems accelerometer and I'm trying to configure it to use the internal FIFO and generate the interrupt lines INT1 or INT2, but they aren't firing. What am I doing wrong?
I'm using the STM32-F446RE Nucleo board. I am using PB1 and PB2 to trigger on the iis3dwb interrupts; PB1 and PB2 are setup as GPIO_EXTI1 and GPIO_EXTI2 respectively. These interrupts work as I have a breakpoint in the interrupt handler's and can tri...
Reading stale data from LIS2DE12
We are currently implementing a LIS2DE12 accelerometer into a project, but we have issues where they sometimes get "stuck" and continue reporting back the exact same values from when it was in motion.Current implementation uses 1hz refresh-rate, usin...
Very strange power profile on LSM6DSL
Good morning.We are testing several motion sensors for a commercial medical wristband. We have selected the LSM6DSL to evaluate its suitability. However, we have detected a very strange power consumption pattern. The VCC pin consumes as expected an a...
Resolved! I2C Error while reading HTS221 temperature and humidity sensor on I-NUCLEO-LRWAN1 extension board.
Hi all, I have been trying to read any data from HTS221 on extension board, and HAL I2C functions returns error.I try to read WHO_AM_I register but HAL_I2C_Memread function always returns timeout so error. Any suggestion would be appreciated, thanks....
Qvar sensing - questions
I am very interested in this Qvar sensing. What i understand is this Qvar depends on the electrode discharge and the Qvar wants to take advantage of ESD, is it correct? Also does the Electrode sensing pad size affect sensing ability?How could we prot...
How to interface STEVAL-MKI197V1 with Raspberry pi to fetch accelerometer values?
Hello,I am facing a problem while using STEVAL-MKI197V1(https://www.st.com/en/evaluation-tools/steval-mki197v1.html) with Raspberry pi 2 and try to fetch the accelerometer values.I am not able to interface this with Raspberry pi 2. I am using python ...
High power consumption of the MLC in the LSM6DSOX (~500µA)
At the stage of creating a proof concept, a LSM6DSOX sensor for a wearable device was chosen. In the datasheet, its power consumption looks fine (~15µA per MLC tree), but in practice there are problems and I want to understand what the problem is. I ...
