STM32 MCUs Embedded software

I have simcom module connected over serial so i want pppos example

Why does ST32CubeMonitor + DISCO constantly disconnects

I just bought a STM32G071B-DISCO because I was looking at using an ST32 in my USB-C application and I'd hoped this could be an analyzer and a starting point. However it constantly disconnects and loses contact with the board. No refreshing brings it...

stm32l0xx, USB Custom HID with firmware 1.12.1 send report problem:

USBD_CUSTOM_HID_SendReport(...) returns USBD_OK but nothing being send when code is generated with firmware version 1.12.1, but this function works without any problem in firmware 1.12.0

Resolve unexpected interrupt when using SAI to output sound

Hi, I'm trying to output sound on my touchGFX application on STM32H747I-DISCO. I used the BSP example from STM32Cube_FW_H7_v1.11 ( wich work fine) to implement the same process in a thread in my main code.So as a first step, i expect to loop the exam...

STM32F429IIT6 stuck on bootloader

Hi, I'm using STM32F429 to build a prototype. I found my board couldn't enter the USB bootloader mode. What I found was: Connect Boot0 to 3.3V via 100k ohm resistor, no pull down on Boot0. The MCU could enter USB bootloader mode properly. I can see a...

I2C. address is not transmitted after START condition

Hi, I'm trying to write i2c ISR by myself with LL. But after START condition address don't transfer(I see it in my oscilloscope), although I write to I2C1->DR address of slave and read reference manual with attention for proper handling.I generate in...

virtual com problems with STM32L4P5VGT6

Hi,I prototype the use the USB virtual com port on a STM32F407 Discovery board andit worked without any problem. I then repeated the exercise on our custom board(STM32L4P5VGT6), the first stage was just transmitting it worked without aproblem. Now ad...

STM32 - bootloader commands for readout protect/unprotect not working...?

I am working with several STM32, let's focus on the STM32L4P5.   I wrote a windows utility which does a nice job of loading code with the bootloader, per the AN3155 documentation. It is nicely robust, and I've been using it for a couple months. I wan...