Interface and connectivity ICs

Custom board with SPBTLE-RF0 module using the X-CUBE_BLE1 software package initialises and advertises to mobile phones but connecting to device fails with Error 133 (0x85): GATT ERROR?

Hi,We are currently working on a custom board with the SPBTLE-RF0 used for BLE communication and a uC from the L4 family (STM32L4A6VGT6P). We used the SensorDemoBLE example as a starting point and programmed it to the board through SWD. From adding b...

I2C with Melexis 90640

I am developing a hardware using as a board a Nucleo 144 to which I have to connect via I2C (pins set via stmcubeMX) a Melexis 90640 thermal scanner, I am experiencing problems with communication or rather, I struggle to understand the logic of readi...

Which crystal does the SPSGRFC-868 module come with?

Rather informally, in Fig 1, the datasheet of the SPSGRFC module indicates the the module comes with a 50 MHz crystal. However, the SPIRIT1 datasheet clearly states "The allowed clock signal frequency is either 24, 26, 48, or 52 MHz". So, does it ind...

B-L475E-IOT01A Sensor Values to PC through UART1

I have a B-L475E-IOT01A board where I am trying to read the Acceleration sensor values from and send them to the PC. I followed this example: file:///C:/Users/nrahardja/Downloads/en.STM32-Education_step4%20(2).pdf. However, the rate at which the data...

Where to download the STM DFU (windows 10 21H1 64bit) update for connecting the interactive display Activboard Touch 78?

Good morning,I'm the tech lead of an high school lab who manages the interactive displais of 10 clasrooms.In any class there is a notebook connected via USB to an interacive display (Promethean Activeboard Touch 78) and to a video-projector.In order ...

Can't erase the no.32 section and above on BlueNRG-2 using BlueNRG-1_ST-LINK_CLI

I'm currently using BlueNRG-2 for development and would like to use the BlueNRG-1_ST-LINK_CLI utility within the BlueNRG-1 ST-LINK Utility software package to perform a section erase operation.It didn't have problems when I first executed "BlueNRG-1_...

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Is there a possibility to power off the Murata Type ABZ module completely, and remember the settings for next power on ? Like for the RN2483 ?

Hello everyone,I use the Murata Type ABZ module as an AT Slave device from a bigger microcontroller. As the Murata module is one among many modules on my board, I have included the possibility to turn it off completely with a load switch. Rather than...