STM32 MCUs products

STM-L432KC UART1 interrupt does not trigger from serial line data

Hello,I'm new to STM controllers and working on a project where the STM gets data over serial line from another microcontroller. For this UART1 is turned active and mapped to ports PA_9 (TX) and PA_10 (RX), so data from other controller flows in on P...

Nucleo-G491RE: communication error with MATLAB/Simulink XCP protocol via LPUART1

Hi all,I'm not able to connect Simulink to the model running on the Nucleo-G491RE board using the "Monitor&Tune" mode via Simulink XCP protocol -> Virtual COM Port -> STLINK-V3E -> VCP LPUART1.I can deploy the model itself successfully to the board (...

USART1 interrupt handler not called

Hello,first, I'm new to STM32 Nucleo MCUs, so if I am asking something that is well-known in documentation of Nucelo boards please advise me to correct documentation.I have a project using a STM32 L432KC that gets serial data from another MCU and sen...

UART and LPUART won't wake up on UART Data Receive Interrupt - STM32L072CZ, CMWX1ZZABZ-078

Hello folks, we are working on an application where STM32L072CZ needs to wake up from STOP mode on a data received interrupt on UART and LPUART RX lines. We are aiming for STM32L072CZ to be in low power mode and needs to wake up when an external sens...

Resolved! GPIO and peripheral intialization after exiting STOP Mode 1

Hi,I am using ThreadX and the STM32L4A9 processor. When my application is ready to sleep I call an enter low power function. I followed sample code from ST Cube example which disables the GPIO CLKs and enters STOP Mode 1.//ENTER Low Power Mode/* Dis...

Resolved! STM34L431 UART receive on Pin PB10, Pin always high signal

Hello,I have a problem with the Controller. For some time the Uart is working fine. Than the UART receive Interrupt is not generated anymore.I check the working pcb with the debugger and the scope. I see there is no Signal on the pin. The uart from t...

STM32 UART receives Null character(\0) on reset.

Project Details:The project consists of two STM32 MCUs connected over UART (without any external pull up resistors). One STM32L4 MCU (LPUART1) acts as an AT master and other STM32L0 MCU (UART 1) acts as an AT slave. AT slave is configured to wake up ...

Resolved! How to download program to MCU through ISP?

How to download program to MCU through ISP? LPUART1 or USART2?

UART Transmission - Why one MCU's UART GPIO pin state(Pull up) during the initialization impacting the Receiving/Transmitting or wake up capability of MCU2, connected over UART?

Project Details:The project consists of two STM32 MCUs connected over UART (without any external pull up resistors). One STM32L4 MCU (LPUART1) acts as an AT master and other STM32L0 MCU (UART 1) acts as an AT slave. AT slave is configured to wake up...

Overrun error in LPUART when using Hardware Flow Control

We are encountering this while using Low Power UART on STM32L412KB microcontroller. We are working on a battery-powered product that has two on board SoCs. One of them is STM32 and the other is Nordic. The two socs communicate with each other over a ...